Taxon Search
  Plantae
      Magnoliophyta
             [Angiospermae]
         Eudicots
             Core Eudicots
               Asterids
               Campanulids
                    Asterales
                            Asteraceae
                                   [Compositae]
                                    Abrotanella
                                    Acamptopappus
                                           [Sphaerocephala]
                                            Acamptopappus microcephalus
                                            Acamptopappus shockleyi
                                            Acamptopappus sphaerocephalus
                                              Acamptopappus sphaerocephalus var. hirtellus
                                              Acamptopappus sphaerocephalus var. sphaerocephalus
                                                     [Aplopappus sphaerocephalus]
                                    Acanthocladium
                                            Acanthocladium carlottae
                                    Acanthospermum
                                            Acanthospermum australe
                                            Acanthospermum hispidum
                                            Acanthospermum humile
                                            Acanthospermum xanthioides
                                    Acanthostyles
                                            Acanthostyles buniifolius
                                    Acanthoxanthium
                                    Achaetogeron
                                            Achaetogeron affinis
                                            Achaetogeron mexicanus
                                            Achaetogeron palmeri
                                            Achaetogeron pinnatifidus
                                            Achaetogeron purpurascens
                                    Achillea
                                            Achillea aegyptiaca
                                            Achillea ageratifolia
                                            Achillea ageratum
                                            Achillea alpina
                                                   [Achillea sibirica]
                                            Achillea atrata
                                            Achillea biserrata
                                            Achillea cartilaginea
                                            Achillea chrysocoma
                                            Achillea clavennae
                                            Achillea clusiana
                                            Achillea clypeolata
                                            Achillea collina
                                            Achillea conferta
                                            Achillea crithmifolia
                                            Achillea dentifera
                                            Achillea distans
                                              Achillea distans ssp. tanacetifolia
                                            Achillea erba-rotta
                                              Achillea erba-rotta ssp. rupestris
                                            Achillea filipendulina
                                            Achillea fragrantissima
                                            Achillea grandifolia
                                            Achillea impatiens
                                            Achillea ligustica
                                            Achillea lingulata
                                            Achillea macrocephala
                                            Achillea macrophylla
                                            Achillea magna
                                            Achillea millefolium
                                                   [Achillea alpicola]
                                                   [Achillea angustissima]
                                                   [Achillea arenicola]
                                                   [Achillea aspleniifolia]
                                                   [Achillea borealis ssp. arenicola]
                                                   [Achillea borealis ssp. californica]
                                                   [Achillea borealis ssp. typica]
                                                   [Achillea borealis var. arenicola]
                                                   [Achillea borealis var. californica]
                                                   [Achillea borealis]
                                                   [Achillea californica]
                                                   [Achillea eradiata]
                                                   [Achillea fusca]
                                                   [Achillea gigantea]
                                                   [Achillea gracilis]
                                                   [Achillea lanulosa ssp. alpicola]
                                                   [Achillea lanulosa ssp. typica]
                                                   [Achillea lanulosa var. alpicola]
                                                   [Achillea lanulosa var. arachnoidea]
                                                   [Achillea lanulosa var. eradiata]
                                                   [Achillea lanulosa]
                                                   [Achillea laxiflora]
                                                   [Achillea millefolium ssp. atrotegula]
                                                   [Achillea millefolium ssp. borealis]
                                                   [Achillea millefolium ssp. lanulosa]
                                                   [Achillea millefolium ssp. occidentalis]
                                                   [Achillea millefolium ssp. pallidotegula]
                                                   [Achillea millefolium var. alpicola]
                                                   [Achillea millefolium var. arenicola]
                                                   [Achillea millefolium var. aspleniifolia]
                                                   [Achillea millefolium var. borealis]
                                                   [Achillea millefolium var. californica]
                                                   [Achillea millefolium var. fulva]
                                                   [Achillea millefolium var. fusca]
                                                   [Achillea millefolium var. gigantea]
                                                   [Achillea millefolium var. gracilis]
                                                   [Achillea millefolium var. lanulosa]
                                                   [Achillea millefolium var. litoralis]
                                                   [Achillea millefolium var. maritima]
                                                   [Achillea millefolium var. megacephala]
                                                   [Achillea millefolium var. nigrescens]
                                                   [Achillea millefolium var. occidentalis]
                                                   [Achillea millefolium var. pacifica]
                                                   [Achillea millefolium var. parviligula]
                                                   [Achillea millefolium var. parvula]
                                                   [Achillea millefolium var. puberula]
                                                   [Achillea millefolium var. rosea]
                                                   [Achillea millefolium var. russeolata]
                                                   [Achillea nigrescens]
                                                   [Achillea occidentalis]
                                                   [Achillea pacifica]
                                                   [Achillea puberula]
                                                   [Achillea rosea]
                                                   [Achillea subalpina]
                                                   [Achillea tomentosa]
                                              Achillea millefolium var. millefolium
                                            Achillea multiflora
                                            Achillea nobilis
                                            Achillea odorata
                                            Achillea pannonica
                                            Achillea ptarmica
                                              Achillea ptarmica ssp. macrocephala
                                            Achillea pyrenaica
                                            Achillea rupestris
                                            Achillea santolina
                                            Achillea setacea
                                            Achillea tanacetifolia
                                            Achillea taygetea
                                            Achillea umbellata
                                    Achyrachaena
                                            Achyrachaena mollis
                                    Achyrocline
                                            Achyrocline deflexa
                                            Achyrocline flaccida
                                            Achyrocline satureioides
                                    Achyropappus
                                            Achyropappus anthemoides
                                    Achyrophorus
                                            Achyrophorus roseus
                                    Acilepidopsis
                                            Acilepidopsis echitifolia
                                    Acmella
                                            Acmella alpestris
                                            Acmella bellidioides
                                            Acmella brachyglossa
                                            Acmella decumbens
                                            Acmella filipes
                                            Acmella glaberrima
                                            Acmella iodiscaea
                                            Acmella lundellii
                                            Acmella oleracea
                                            Acmella oppositifolia
                                              Acmella oppositifolia var. oppositifolia
                                              Acmella oppositifolia var. repens
                                            Acmella pilosa
                                            Acmella pusilla
                                            Acmella radicans
                                              Acmella radicans var. debilis
                                              Acmella radicans var. radicans
                                            Acmella repens
                                            Acmella sodiroi
                                            Acmella uliginosa
                                    Acosta
                                    Acourtia
                                            Acourtia alamanii
                                            Acourtia carpholepis
                                            Acourtia cordata
                                            Acourtia coulteri
                                            Acourtia cuernavacana
                                            Acourtia dieringeri
                                            Acourtia discolor
                                            Acourtia dugesii
                                            Acourtia durangensis
                                            Acourtia fragrans
                                            Acourtia fruticosa
                                            Acourtia gentryi
                                            Acourtia glomeriflora
                                            Acourtia grandifolia
                                            Acourtia hebeclada
                                            Acourtia hintoniorum
                                            Acourtia huajuapana
                                              Acourtia huajuapana var. actinomorpha
                                            Acourtia humboldtii
                                            Acourtia lozanii
                                            Acourtia macrocephala
                                            Acourtia michoacana
                                            Acourtia microcephala
                                                   [Perezia microcephala]
                                            Acourtia montana
                                            Acourtia nana
                                                   [Perezia nana]
                                            Acourtia nudicaulis
                                            Acourtia palmeri
                                            Acourtia parryi
                                            Acourtia patens
                                            Acourtia pilulosa
                                            Acourtia pinetorum
                                            Acourtia platyphylla
                                            Acourtia pringlei
                                            Acourtia purpusii
                                            Acourtia reticulata
                                            Acourtia rigida
                                            Acourtia runcinata
                                                   [Perezia runcinata]
                                            Acourtia rzedowskii
                                            Acourtia scapiformis
                                            Acourtia simulata
                                            Acourtia sinaloana
                                            Acourtia tenoriensis
                                            Acourtia thurberi
                                                   [Acourtia mexicana]
                                                   [Perezia thurberi]
                                            Acourtia thyrsoidea
                                            Acourtia turbinata
                                            Acourtia wislizeni
                                            Acourtia wrightii
                                                   [Perezia wrightii]
                                    Acrisione
                                            Acrisione cymosa
                                    Acritopappus
                                            Acritopappus confertus
                                    Acroclinium
                                            Acroclinium roseum
                                    Acroptilon
                                            Acroptilon repens
                                                   [Centaurea picris]
                                                   [Centaurea repens]
                                    Actinea
                                            Actinea herbacea
                                            Actinea leptoclada
                                            Actinea linearifolia
                                            Actinea odorata
                                            Actinea osterhoutii
                                            Actinea richardsonii
                                              Actinea richardsonii var. floribunda
                                            Actinea scaposa
                                    Actinella
                                            Actinella biennis
                                    Actinolepis
                                            Actinolepis multicaulis
                                    Actinomeris
                                            Actinomeris helianthoides
                                              Actinomeris helianthoides var. elliottii
                                              Actinomeris helianthoides var. nuttallii
                                            Actinomeris heterophylla
                                            Actinomeris nudicaulis
                                            Actinomeris oppositifolia
                                            Actinomeris pauciflora
                                            Actinomeris squarrosa
                                            Actinomeris wrightii
                                    Actinospermum
                                            Actinospermum angustifolium
                                    Addisonia
                                    Adenocaulon
                                            Adenocaulon bicolor
                                    Adenocritonia
                                    Adenopappus
                                            Adenopappus persicaefolius
                                    Adenophyllum
                                            Adenophyllum anomalum
                                            Adenophyllum cancellatum
                                                   [Adenophyllum porophyllum var. cancellatum]
                                                   [Dyssodia cancellata]
                                            Adenophyllum coccineum
                                            Adenophyllum cooperi
                                                   [Dyssodia cooperi]
                                            Adenophyllum porophylloides
                                                   [Dyssodia porophylloides]
                                            Adenophyllum porophyllum
                                                   [Dyssodia porophylla]
                                                   [Dyssodia porophyllum]
                                                   [Pteronia porophylla]
                                            Adenophyllum speciosum
                                            Adenophyllum wrightii
                                                   [Dyssodia neomexicana]
                                                   [Hymenatherum neomexicanum]
                                              Adenophyllum wrightii var. wrightii
                                            Adenophyllum yecoranum
                                    Adenostemma
                                            Adenostemma berteroi
                                            Adenostemma brasilianum
                                            Adenostemma lanceolatum
                                            Adenostemma lavenia
                                            Adenostemma verbesina
                                            Adenostemma viscosum
                                    Adenothamnus
                                            Adenothamnus validus
                                    Aegialophila
                                            Aegialophila pumila
                                    Aequatorium
                                    Aetheolaena
                                    Agassizia
                                    Ageratella
                                            Ageratella microphylla
                                              Ageratella microphylla var. sonorana
                                    Ageratina
                                            Ageratina adenophora
                                                   [Eupatorium adenophorum]
                                                   [Eupatorium glandulosum]
                                            Ageratina altissima
                                              Ageratina altissima var. altissima
                                              Ageratina altissima var. angustata
                                              Ageratina altissima var. roanensis
                                                     [Eupatorium roanense]
                                                     [Eupatorium rugosum var. roanense]
                                                     [Eupatorium urticifolium var. tomentellum]
                                                     [Eupatorium urticifolium]
                                            Ageratina areolaris
                                            Ageratina aromatica
                                              Ageratina aromatica var. aromatica
                                              Ageratina aromatica var. incisa
                                            Ageratina arsenei
                                            Ageratina astellera
                                            Ageratina atrocordata
                                            Ageratina bellidifolia
                                            Ageratina blepharilepis
                                            Ageratina brevipes
                                            Ageratina bustamenta
                                            Ageratina calaminthaefolia
                                            Ageratina calaminthifolia
                                            Ageratina calophylla
                                            Ageratina campyloclada
                                            Ageratina capillipes
                                            Ageratina cardiophylla
                                            Ageratina chiapensis
                                            Ageratina choricephala
                                            Ageratina ciliata
                                            Ageratina collodes
                                            Ageratina conspicua
                                            Ageratina corylifolia
                                            Ageratina cremasta
                                            Ageratina cronquistii
                                            Ageratina cylindrica
                                            Ageratina deltoidea
                                            Ageratina dictyoneura
                                            Ageratina espinosara
                                            Ageratina espinosarum
                                            Ageratina gentryana
                                            Ageratina glabrata
                                            Ageratina glauca
                                            Ageratina glischra
                                            Ageratina gypsophila
                                            Ageratina havanensis
                                                   [Eupatorium havanense]
                                                   [Eupatorium texense]
                                            Ageratina hebes
                                            Ageratina henzium
                                            Ageratina herbacea
                                                   [Ageratina betulaefolia]
                                                   [Eupatorium herbaceum]
                                            Ageratina hidalgensis
                                            Ageratina hyssopina
                                            Ageratina illita
                                            Ageratina irrasa
                                            Ageratina isolepis
                                            Ageratina jucunda
                                            Ageratina lasioneura
                                            Ageratina lemmonii
                                                   [Eupatorium lemmonii]
                                            Ageratina liebmannii
                                            Ageratina ligustrina
                                            Ageratina luciae-brauniae
                                            Ageratina lucida
                                            Ageratina mairetiana
                                            Ageratina malacolepis
                                            Ageratina miquihuana
                                            Ageratina muelleri
                                            Ageratina occidentalis
                                                   [Eupatorium occidentale]
                                            Ageratina oreithales
                                            Ageratina palmeri
                                            Ageratina paucibracteata
                                            Ageratina paupercula
                                                   [Eupatorium pauperculum]
                                            Ageratina pazcuarensis
                                            Ageratina petiolaris
                                            Ageratina pichinchensis
                                            Ageratina potosina
                                            Ageratina pringlei
                                            Ageratina purpusii
                                            Ageratina resiniflua
                                            Ageratina rhomboidea
                                            Ageratina riparia
                                            Ageratina rollinsii
                                            Ageratina rothrockii
                                                   [Eupatorium rothrockii var. shrevei]
                                                   [Eupatorium rothrockii]
                                            Ageratina rupicola
                                                   [Eupatorium rupicola]
                                            Ageratina saltillensis
                                            Ageratina sandersii
                                            Ageratina scorodonioides
                                            Ageratina seleri
                                            Ageratina shastensis
                                            Ageratina sousae
                                            Ageratina stricta
                                            Ageratina thyrsiflora
                                            Ageratina tomentella
                                            Ageratina tristis
                                            Ageratina venulosa
                                            Ageratina viburnoides
                                            Ageratina viscosissima
                                            Ageratina warnockii
                                            Ageratina wrightii
                                                   [Eupatorium wrightii]
                                            Ageratina yecorana
                                    Ageratum
                                            Ageratum albidum
                                            Ageratum callosum
                                            Ageratum conyzoides
                                              Ageratum conyzoides subsp. conyzoides
                                            Ageratum corymbosum
                                                   [Ageratum guatemalense]
                                              Ageratum corymbosum var. longipetiolatum
                                            Ageratum domingense
                                            Ageratum echioides
                                            Ageratum gaumeri
                                            Ageratum houstonianum
                                            Ageratum isocarphoides
                                            Ageratum latifolium
                                            Ageratum littorale
                                            Ageratum lucidum
                                            Ageratum maritimum
                                            Ageratum paleaceum
                                            Ageratum peckii
                                            Ageratum riparium
                                            Ageratum salicifolium
                                            Ageratum strictum
                                            Ageratum tehuacanum
                                            Ageratum tomentosum
                                    Agnorhiza
                                            Agnorhiza bolanderi
                                            Agnorhiza elata
                                            Agnorhiza invenusta
                                            Agnorhiza ovata
                                                   [Wyethia ovata]
                                            Agnorhiza reticulata
                                    Agoseris
                                            Agoseris alpestris
                                            Agoseris apargioides
                                              Agoseris apargioides ssp. maritima
                                              Agoseris apargioides var. apargioides
                                              Agoseris apargioides var. eastwoodiae
                                              Agoseris apargioides var. maritima
                                            Agoseris arachnoidea
                                            Agoseris attenuata
                                            Agoseris aurantiaca
                                              Agoseris aurantiaca var. aurantiaca
                                              Agoseris aurantiaca var. purpurea
                                                     [Agoseris aurantiaca ssp. purpurea]
                                                     [Agoseris glauca var. cronquistii]
                                                     [Agoseris graminifolia]
                                            Agoseris barbellulata
                                            Agoseris cinerea
                                            Agoseris dasycarpa
                                            Agoseris eastwoodiae
                                            Agoseris elata
                                            Agoseris frondifera
                                            Agoseris glauca
                                              Agoseris glauca var. agrestis
                                                     [Agoseris agrestis]
                                              Agoseris glauca var. dasycephala
                                                     [Agoseris glauca ssp. scorzonerifolia]
                                                     [Agoseris glauca var. asper]
                                                     [Agoseris glauca var. pumila]
                                                     [Agoseris glauca var. villosa]
                                                     [Agoseris isomeris]
                                                     [Agoseris pumila]
                                                     [Agoseris scorzonerifolia var. aspera]
                                                     [Agoseris scorzonerifolia]
                                                     [Agoseris villosa]
                                                     [Troximon glaucum var. dasycephalum]
                                                     [Troximon glaucum var. pumilum]
                                              Agoseris glauca var. glauca
                                                     [Agoseris turbinata]
                                                     [Troximon glaucum]
                                            Agoseris grandiflora
                                                   [Agoseris laciniata]
                                                   [Agoseris plebeja]
                                                   [Troximon grandiflorum]
                                              Agoseris grandiflora var. grandiflora
                                              Agoseris grandiflora var. leptophylla
                                            Agoseris heterophylla
                                                   [Troximon chilense]
                                                   [Troximon heterophyllum]
                                              Agoseris heterophylla ssp. heterophylla
                                              Agoseris heterophylla var. crenulata
                                              Agoseris heterophylla var. cryptopleura
                                              Agoseris heterophylla var. heterophylla
                                                     [Agoseris heterophylla ssp. californica]
                                                     [Agoseris heterophylla ssp. normalis]
                                                     [Agoseris heterophylla var. kymapleura]
                                                     [Macrorhynchus heterophyllus]
                                              Agoseris heterophylla var. quentinii
                                              Agoseris heterophylla var. turgida
                                            Agoseris hirsuta
                                            Agoseris humilis
                                            Agoseris intermedia
                                            Agoseris lackschewitzii
                                            Agoseris leptocarpa
                                            Agoseris maculata
                                            Agoseris maritima
                                            Agoseris montana
                                            Agoseris monticola
                                                   [Agoseris glauca var. monticola]
                                            Agoseris parviflora
                                                   [Agoseris caudata]
                                                   [Agoseris glauca var. laciniata]
                                                   [Agoseris taraxacoides]
                                                   [Troximon glaucum var. laciniatum]
                                            Agoseris retrorsa
                                                   [Macrorhynchus retrorsus]
                                            Agoseris roseata
                                            Agoseris rostrata
                                            Agoseris taraxacifolia
                                            Agoseris x elata
                                    Ajania
                                            Ajania khartensis
                                            Ajania tenuifolia
                                    Albertinia
                                    Alcina
                                    Aldama
                                            Aldama dentata
                                    Alepidocline
                                            Alepidocline trifida
                                    Alloispermum
                                            Alloispermum integrifolium
                                            Alloispermum palmeri
                                              Alloispermum palmeri var. lancifolium
                                            Alloispermum scabrifolium
                                            Alloispermum scabrum
                                    Almutaster
                                            Almutaster pauciflorus
                                                   [Aster hydrophilus]
                                                   [Aster pauciflorus]
                                    Alomia
                                            Alomia alata
                                            Alomia echioides
                                            Alomia stenolepis
                                    Alvordia
                                            Alvordia brandegeei
                                            Alvordia congesta
                                            Alvordia fruticosa
                                            Alvordia glomerata
                                              Alvordia glomerata var. glomerata
                                              Alvordia glomerata var. insularis
                                    Amauria
                                            Amauria brandegeeana
                                            Amauria carterae
                                            Amauria rotundifolia
                                    Amauriopsis
                                            Amauriopsis dissecta
                                                   [Amauria dissecta]
                                                   [Bahia dissecta]
                                    Amberboa
                                            Amberboa moschata
                                                   [Centaurea moschata]
                                    Amblyolepis
                                            Amblyolepis setigera
                                                   [Helenium setigerum]
                                    Amblyopappus
                                            Amblyopappus pusillus
                                    Amboroa
                                    Ambrosia
                                            Ambrosia acanthicarpa
                                                   [Franseria acanthicarpa]
                                                   [Gaertneria acanthicarpa]
                                            Ambrosia acuminata
                                            Ambrosia ambrosioides
                                                   [Franseria ambrosioides]
                                            Ambrosia arborescens
                                            Ambrosia artemisiaefolia
                                            Ambrosia artemisiifolia
                                              Ambrosia artemisiifolia var. artemisiifolia
                                              Ambrosia artemisiifolia var. elatior
                                                     [Ambrosia elatior]
                                              Ambrosia artemisiifolia var. paniculata
                                            Ambrosia artemisioides
                                            Ambrosia bidentata
                                            Ambrosia bipinnatifida
                                            Ambrosia bryantii
                                            Ambrosia camphorata
                                            Ambrosia canescens
                                            Ambrosia carduacea
                                            Ambrosia chamissonis
                                                   [Ambrosia chamissonis var. bipinnatisecta]
                                                   [Franseria chamissonis ssp. bipinnatisecta]
                                                   [Franseria chamissonis var. bipinnatisecta]
                                                   [Franseria chamissonis]
                                            Ambrosia cheiranthifolia
                                            Ambrosia chenopodiifolia
                                                   [Franseria chenopodiifolia]
                                            Ambrosia confertiflora
                                                   [Franseria confertiflora]
                                                   [Franseria strigulosa]
                                                   [Gaertneria tenuifolia]
                                            Ambrosia cordifolia
                                                   [Franseria cordifolia]
                                                          Ambrosia cordifolia x deltoidea
                                            Ambrosia deltoidea
                                                   [Franseria deltoidea]
                                            Ambrosia divaricata
                                            Ambrosia dumosa
                                                   [Franseria dumosa]
                                            Ambrosia eriocentra
                                                   [Franseria eriocentra]
                                            Ambrosia flexuosa
                                            Ambrosia glandulosa
                                            Ambrosia grayi
                                                   [Gaertnera tomentosa]
                                                   [Gaertneria grayi]
                                            Ambrosia hispida
                                            Ambrosia ilicifolia
                                                   [Franseria ilicifolia]
                                            Ambrosia linearis
                                            Ambrosia magdalenae
                                            Ambrosia media
                                            Ambrosia monogyra
                                                   [Hymenoclea monogyra]
                                            Ambrosia monophylla
                                            Ambrosia paniculata
                                            Ambrosia peruviana
                                            Ambrosia psilostachya
                                                   [Ambrosia californica]
                                                   [Ambrosia coronopifolia]
                                                   [Ambrosia cumanensis]
                                                   [Ambrosia psilostachya var. californica]
                                                   [Ambrosia psilostachya var. coronopifolia]
                                                   [Ambrosia psilostachya var. lindheimeriana]
                                                   [Ambrosia rugelii]
                                                   [Franseria psilostachya]
                                            Ambrosia pumila
                                                   [Franseria pumila]
                                            Ambrosia salsola
                                                   [Ambrosia salsola var. fasciculata]
                                                   [Ambrosia salsola var. pentalepis]
                                                   [Ambrosia salsola var. salsola]
                                                   [Hymenoclea fasciculata]
                                                   [Hymenoclea pentalepis]
                                                   [Hymenoclea salsola var. fasciculata]
                                                   [Hymenoclea salsola var. patula]
                                                   [Hymenoclea salsola var. pentalepis]
                                                   [Hymenoclea salsola var. salsola]
                                                   [Hymenoclea salsola]
                                            Ambrosia sandersonii
                                            Ambrosia striata
                                            Ambrosia tenuifolia
                                            Ambrosia tomentosa
                                                   [Franseria discolor]
                                                   [Franseria tomentosa]
                                                   [Gaertneria discolor]
                                                   [Gaertneria tomentosa]
                                            Ambrosia trifida
                                                   [Ambrosia aptera]
                                              Ambrosia trifida var. texana
                                                     [Ambrosia trifida var. aptera]
                                              Ambrosia trifida var. trifida
                                                     [Ambrosia trifida var. integrifolia]
                                            Ambrosia velutina
                                            Ambrosia x helenae
                                            Ambrosia x intergradiens
                                    Ameghinoa
                                            Ameghinoa patagonica
                                    Amellus
                                           [Stilpnophyllum]
                                    Ammodia
                                            Ammodia oregona
                                    Ammopursus
                                            Ammopursus ohlingerae
                                    Ampelaster
                                            Ampelaster carolinianus
                                    Amphiachyris
                                            Amphiachyris amoena
                                            Amphiachyris amoenum
                                            Amphiachyris dracunculoides
                                                   [Brachyris dracunculoides]
                                                   [Gutierrezia dracunculoides]
                                                   [Xanthocephalum dracunculoides]
                                    Amphipappus
                                            Amphipappus fremontii
                                                   [Amphiachyris fremontii]
                                              Amphipappus fremontii ssp. fremontii
                                              Amphipappus fremontii var. fremontii
                                              Amphipappus fremontii var. spinosus
                                                     [Amphiachyris fremontii var. spinosa]
                                                     [Amphipappus fremontii ssp. spinosus]
                                    Anacyclus
                                            Anacyclus clavatus
                                            Anacyclus tomentosus
                                    Anacylus
                                            Anacylus clavatus
                                            Anacylus tomentosus
                                    Anaphalis
                                            Anaphalis lactea
                                            Anaphalis margaritacea
                                                   [Anaphalis lanata]
                                                   [Anaphalis margaritacea var. angustior]
                                                   [Anaphalis margaritacea var. intercedens]
                                                   [Anaphalis margaritacea var. occidentalis]
                                                   [Anaphalis margaritacea var. revoluta]
                                                   [Anaphalis margaritacea var. subalpina]
                                                   [Anaphalis occidentalis]
                                                   [Antennaria margaritacea]
                                                   [Gnaphalium margaritaceum]
                                                   [Nacrea lanata]
                                            Anaphalis racemifera
                                            Anaphalis sierrae
                                            Anaphalis subalpina
                                    Anastraphia
                                            Anastraphia attenuata
                                                   [Anastraphia lomensis]
                                                   [Anastraphia mensuraensis]
                                            Anastraphia buchii
                                                   [Anastraphia rosei]
                                            Anastraphia calcicola
                                            Anastraphia cowellii
                                            Anastraphia crassifolia
                                            Anastraphia cubensis
                                                   [Anastraphia victorinii]
                                            Anastraphia ekmanii
                                            Anastraphia elliptica
                                            Anastraphia enneantha
                                            Anastraphia gomezii
                                            Anastraphia ilicifolia
                                            Anastraphia intertexta
                                            Anastraphia maisiana
                                            Anastraphia mantuensis
                                            Anastraphia microcephala
                                            Anastraphia montana
                                            Anastraphia northropiana
                                              Anastraphia northropiana var. northropiana
                                            Anastraphia obovata
                                            Anastraphia obtusifolia
                                                   [Anastraphia baracoensis]
                                            Anastraphia oligantha
                                            Anastraphia parvifolia
                                            Anastraphia paucifloscula
                                                   [Anastraphia bahamensis]
                                                   [Anastraphia cuneifolia]
                                            Anastraphia picardae
                                            Anastraphia recurva
                                            Anastraphia shaferi
                                                   [Anastraphia nipensis]
                                                   [Anastraphia oblongifolia]
                                            Anastraphia tortuensis
                                            Anastraphia wilsonii
                                    Ancistrocarphus
                                            Ancistrocarphus filagineus
                                            Ancistrocarphus keilii
                                    Andromachia
                                    Angelphytum
                                            Angelphytum arnottii
                                            Angelphytum hatschbachii
                                            Angelphytum indutum
                                    Anisocarpus
                                            Anisocarpus bolanderi
                                            Anisocarpus madioides
                                            Anisocarpus scabridus
                                    Anisocoma
                                            Anisocoma acaulis
                                    Antennaria
                                            Antennaria acuminata
                                            Antennaria alaskana
                                            Antennaria alborosea
                                            Antennaria alpina
                                                   [Antennaria alpina var. canescens]
                                                   [Antennaria alpina var. compacta]
                                                   [Antennaria alpina var. glabrata]
                                                   [Antennaria alpina var. intermedia]
                                                   [Antennaria alpina var. stolonifera]
                                                   [Antennaria alpina var. ungavensis]
                                                   [Antennaria arenicola]
                                                   [Antennaria atriceps]
                                                   [Antennaria bayardii]
                                                   [Antennaria boecheriana]
                                                   [Antennaria borealis]
                                                   [Antennaria brunnescens]
                                                   [Antennaria cana]
                                                   [Antennaria canescens ssp. porsildii]
                                                   [Antennaria canescens var. pseudoporsildii]
                                                   [Antennaria canescens]
                                                   [Antennaria columnaris]
                                                   [Antennaria compacta]
                                                   [Antennaria confusa]
                                                   [Antennaria crymophila]
                                                   [Antennaria foggii]
                                                   [Antennaria friesiana ssp. compacta]
                                                   [Antennaria glabrata]
                                                   [Antennaria groenlandica]
                                                   [Antennaria hansii]
                                                   [Antennaria intermedia]
                                                   [Antennaria labradorica]
                                                   [Antennaria longii]
                                                   [Antennaria media ssp. compacta]
                                                   [Antennaria pallida]
                                                   [Antennaria pedunculata]
                                                   [Antennaria porsildii]
                                                   [Antennaria sornborgeri]
                                                   [Antennaria stolonifera]
                                                   [Antennaria subcanescens]
                                                   [Antennaria ungavensis]
                                                   [Antennaria vexillifera]
                                                   [Antennaria wiegandii]
                                                   [Gnaphalium alpinum]
                                              Antennaria alpina var. megacephala
                                              Antennaria alpina var. scabra
                                            Antennaria ambigens
                                            Antennaria ampla
                                            Antennaria anaphaloides
                                            Antennaria angustata
                                            Antennaria appendiculata
                                            Antennaria arcuata
                                            Antennaria argentea
                                              Antennaria argentea ssp. aberrans
                                            Antennaria arkansana
                                            Antennaria arnoglossa
                                              Antennaria arnoglossa var. ambigens
                                            Antennaria aromatica
                                            Antennaria bifrons
                                            Antennaria brainerdii
                                            Antennaria burwellensis
                                            Antennaria callilepis
                                            Antennaria calophylla
                                            Antennaria canadensis
                                                   [Antennaria neodioica ssp. canadensis]
                                            Antennaria carpatica
                                              Antennaria carpatica var. humilis
                                              Antennaria carpatica var. lanata
                                              Antennaria carpatica var. pulcherrima
                                            Antennaria caucasica
                                            Antennaria chilensis
                                            Antennaria chlorantha
                                                   [Antennaria neodioica var. chlorantha]
                                            Antennaria concolor
                                            Antennaria congesta
                                            Antennaria corymbosa
                                                   [Antennaria acuta]
                                                   [Antennaria dioica var. corymbosa]
                                                   [Antennaria hygrophila]
                                                   [Antennaria nardina]
                                            Antennaria densifolia
                                            Antennaria dimorpha
                                                   [Antennaria dimorpha var. integra]
                                                   [Antennaria dimorpha var. latisquama]
                                                   [Antennaria dimorpha var. macrocephala]
                                                   [Antennaria latisquama]
                                                   [Antennaria macrocephala]
                                                   [Gnaphalium dimorphum]
                                              Antennaria dimorpha var. flagellaris
                                            Antennaria dioica
                                              Antennaria dioica var. hyperborea
                                              Antennaria dioica var. rosea
                                            Antennaria ellyae
                                            Antennaria eucosma
                                            Antennaria exilis
                                            Antennaria eximia
                                            Antennaria fallax
                                              Antennaria fallax var. calophylla
                                            Antennaria farwellii
                                            Antennaria fernaldiana
                                            Antennaria flagellaris
                                            Antennaria formosa
                                            Antennaria friesiana
                                              Antennaria friesiana ssp. alaskana
                                              Antennaria friesiana ssp. friesiana
                                                     [Antennaria alpina var. friesiana]
                                                     [Antennaria ekmaniana]
                                              Antennaria friesiana ssp. neoalaskana
                                              Antennaria friesiana var. megacephala
                                            Antennaria geyeri
                                            Antennaria greenei
                                            Antennaria hendersonii
                                            Antennaria howellii
                                                   [Antennaria neodioica ssp. howellii]
                                              Antennaria howellii ssp. canadensis
                                              Antennaria howellii ssp. howellii
                                              Antennaria howellii ssp. neodioica
                                                     [Antennaria grandis]
                                                     [Antennaria neglecta var. attenuata]
                                                     [Antennaria neglecta var. neodioica]
                                                     [Antennaria neodioica var. attenuata]
                                                     [Antennaria neodioica var. chlorophylla]
                                                     [Antennaria neodioica var. grandis]
                                                     [Antennaria neodioica var. interjecta]
                                                     [Antennaria neodioica var. rupicola]
                                                     [Antennaria neodioica]
                                                     [Antennaria obovata]
                                                     [Antennaria rhodantha]
                                                     [Antennaria rupicola]
                                                     [Antennaria russellii]
                                              Antennaria howellii ssp. petaloidea
                                            Antennaria hudsonica
                                            Antennaria hyperborea
                                            Antennaria imbricata
                                            Antennaria insularis
                                            Antennaria lanata
                                            Antennaria lanulosa
                                            Antennaria luzuloides
                                              Antennaria luzuloides ssp. aberrans
                                              Antennaria luzuloides ssp. luzuloides
                                              Antennaria luzuloides var. argentea
                                              Antennaria luzuloides var. microcephala
                                              Antennaria luzuloides var. oblanceolata
                                            Antennaria magellanica
                                            Antennaria marginata
                                                   [Antennaria dioica var. marginata]
                                                   [Antennaria fendleri]
                                                   [Antennaria peramoena]
                                            Antennaria media
                                                   [Antennaria alpina var. media]
                                                   [Antennaria austromontana]
                                                   [Antennaria candida]
                                                   [Antennaria densa]
                                                   [Antennaria gormanii]
                                                   [Antennaria modesta]
                                                   [Antennaria mucronata]
                                              Antennaria media ssp. ciliata
                                              Antennaria media ssp. pulchella
                                            Antennaria megacephala
                                            Antennaria mesochora
                                            Antennaria microcephala
                                            Antennaria microphylla
                                                   [Antennaria aprica var. minuscula]
                                                   [Antennaria aprica]
                                                   [Antennaria aureola]
                                                   [Antennaria bracteosa]
                                                   [Antennaria holmii]
                                                   [Antennaria minuscula]
                                                   [Antennaria nitida]
                                                   [Antennaria obtusata]
                                                   [Antennaria parvifolia var. bracteosa]
                                                   [Antennaria rhodanthus]
                                                   [Antennaria rosea var. nitida]
                                                   [Antennaria solstitialis]
                                            Antennaria monocephala
                                              Antennaria monocephala ssp. angustata
                                              Antennaria monocephala ssp. monocephala
                                              Antennaria monocephala ssp. philonipha
                                              Antennaria monocephala var. exilis
                                            Antennaria munda
                                            Antennaria neglecta
                                                   [Antennaria angustiarum]
                                                   [Antennaria athabascensis]
                                                   [Antennaria campestris var. athabascensis]
                                                   [Antennaria campestris]
                                                   [Antennaria chelonica]
                                                   [Antennaria erosa]
                                                   [Antennaria howellii var. athabascensis]
                                                   [Antennaria howellii var. campestris]
                                                   [Antennaria longifolia]
                                                   [Antennaria lunellii]
                                                   [Antennaria nebraskensis]
                                                   [Antennaria neglecta var. athabascensis]
                                                   [Antennaria neglecta var. campestris]
                                                   [Antennaria parvula]
                                                   [Antennaria rousseaui]
                                                   [Antennaria wilsonii]
                                              Antennaria neglecta ssp. howellii
                                              Antennaria neglecta var. argillicola
                                              Antennaria neglecta var. canadensis
                                              Antennaria neglecta var. howellii
                                              Antennaria neglecta var. petaloidea
                                              Antennaria neglecta var. randii
                                            Antennaria neoalaskana
                                            Antennaria nitens
                                            Antennaria oblanceolata
                                            Antennaria occidentalis
                                            Antennaria oxyphylla
                                            Antennaria parlinii
                                              Antennaria parlinii ssp. fallax
                                              Antennaria parlinii ssp. parlinii
                                              Antennaria parlinii var. arnoglossa
                                              Antennaria parlinii var. fallax
                                              Antennaria parlinii var. farwellii
                                            Antennaria parvifolia
                                                   [Antennaria latisquamea]
                                                   [Antennaria pumila]
                                                   [Antennaria recurva]
                                            Antennaria pedicellata
                                            Antennaria petaloidea
                                                   [Antennaria neodioica ssp. petaloidea]
                                                   [Antennaria neodioica var. petaloidea]
                                              Antennaria petaloidea var. scariosa
                                              Antennaria petaloidea var. subcorymbosa
                                            Antennaria philonipha
                                            Antennaria plantaginifolia
                                                   [Antennaria caroliniana]
                                                   [Antennaria decipiens]
                                                   [Antennaria denikeana]
                                                   [Antennaria nemoralis]
                                                   [Antennaria petiolata]
                                                   [Antennaria pinetorum]
                                                   [Antennaria plantaginifolia var. petiolata]
                                                   [Gnaphalium plantaginifolium]
                                              Antennaria plantaginifolia var. ambigens
                                              Antennaria plantaginifolia var. arnoglossa
                                              Antennaria plantaginifolia var. monocephala
                                              Antennaria plantaginifolia var. parlinii
                                            Antennaria polyphylla
                                            Antennaria pulchella
                                            Antennaria pulcherrima
                                              Antennaria pulcherrima ssp. anaphaloides
                                              Antennaria pulcherrima ssp. eucosma
                                              Antennaria pulcherrima ssp. pulcherrima
                                              Antennaria pulcherrima var. anaphaloides
                                              Antennaria pulcherrima var. angustisquama
                                              Antennaria pulcherrima var. sordida
                                            Antennaria pygmaea
                                            Antennaria pyramidata
                                            Antennaria racemosa
                                                   [Antennaria petasites]
                                                   [Antennaria piperi]
                                            Antennaria randii
                                                   [Antennaria neodioica var. randii]
                                            Antennaria rosea
                                              Antennaria rosea ssp. arida
                                                     [Antennaria arida ssp. viscidula]
                                                     [Antennaria arida]
                                                     [Antennaria scariosa]
                                              Antennaria rosea ssp. confinis
                                                     [Antennaria albicans]
                                                     [Antennaria angustifolia]
                                                     [Antennaria arida var. humilis]
                                                     [Antennaria breitungii]
                                                     [Antennaria brevistyla]
                                                     [Antennaria concinna]
                                                     [Antennaria confinis]
                                                     [Antennaria dioica var. kernensis]
                                                     [Antennaria elegans]
                                                     [Antennaria foliacea var. humilis]
                                                     [Antennaria incarnata]
                                                     [Antennaria laingii]
                                                     [Antennaria leontopodioides]
                                                     [Antennaria leuchippii]
                                                     [Antennaria rosea var. angustifolia]
                                                     [Antennaria sedoides]
                                                     [Antennaria sordida]
                                                     [Antennaria straminea]
                                                     [Antennaria subviscosa]
                                                     [Antennaria tomentella]
                                              Antennaria rosea ssp. divaricata
                                              Antennaria rosea ssp. pulvinata
                                                     [Antennaria affinis]
                                                     [Antennaria albescens]
                                                     [Antennaria fusca]
                                                     [Antennaria gaspensis]
                                                     [Antennaria howellii ssp. gaspensis]
                                                     [Antennaria isolepis]
                                                     [Antennaria maculata]
                                                     [Antennaria manicouagana]
                                                     [Antennaria media ssp. fusca]
                                                     [Antennaria neglecta var. gaspensis]
                                                     [Antennaria neodioica var. gaspensis]
                                                     [Antennaria peasei]
                                                     [Antennaria pulvinata ssp. albescens]
                                                     [Antennaria pulvinata]
                                                     [Antennaria sansonii]
                                              Antennaria rosea ssp. rosea
                                              Antennaria rosea var. imbricata
                                            Antennaria rosulata
                                                   [Antennaria bakeri]
                                                   [Antennaria sierrae-blancae]
                                            Antennaria scabra
                                            Antennaria soliceps
                                            Antennaria solitaria
                                            Antennaria spathulata
                                            Antennaria speciosa
                                            Antennaria stenolepis
                                            Antennaria stenophylla
                                                   [Antennaria alpina var. stenophylla]
                                                   [Antennaria leucophaea]
                                            Antennaria suffrutescens
                                            Antennaria tansleyi
                                            Antennaria tweedsmurii
                                            Antennaria umbellata
                                            Antennaria umbrinella
                                                   [Antennaria aizoides]
                                                   [Antennaria flavescens]
                                                   [Antennaria reflexa]
                                            Antennaria virginica
                                              Antennaria virginica var. argillicola
                                            Antennaria x erigeroides
                                            Antennaria x foliacea
                                            Antennaria x macounii
                                            Antennaria x oblancifolia
                                    Anteremanthus
                                            Anteremanthus hatschbachii
                                Anthemideae
                                    Artemisia
                                            Artemisia abrotanum
                                            Artemisia absinthium
                                                   [Artemisia absinthium var. insipida]
                                            Artemisia alaskana
                                            Artemisia aleutica
                                            Artemisia alpina
                                            Artemisia annua
                                            Artemisia araxina
                                            Artemisia arbuscula
                                              Artemisia arbuscula ssp. arbuscula
                                              Artemisia arbuscula ssp. longicaulis
                                              Artemisia arbuscula ssp. longiloba
                                              Artemisia arbuscula ssp. thermopola
                                              Artemisia arbuscula var. longiloba
                                            Artemisia arctica
                                              Artemisia arctica ssp. arctica
                                              Artemisia arctica ssp. beringensis
                                              Artemisia arctica ssp. comata
                                              Artemisia arctica ssp. saxicola
                                              Artemisia arctica var. beringensis
                                            Artemisia argentea
                                            Artemisia argophylla
                                            Artemisia armeniaca
                                            Artemisia aromatica
                                            Artemisia aucheri
                                            Artemisia australis
                                            Artemisia biennis
                                              Artemisia biennis var. biennis
                                              Artemisia biennis var. diffusa
                                            Artemisia bigelovii
                                            Artemisia borealis
                                              Artemisia borealis ssp. borealis
                                              Artemisia borealis ssp. purshii
                                              Artemisia borealis ssp. richardsoniana
                                              Artemisia borealis var. latisecta
                                              Artemisia borealis var. purshii
                                            Artemisia brittonii
                                            Artemisia californica
                                              Artemisia californica var. insularis
                                            Artemisia campestris
                                              Artemisia campestris ssp. borealis
                                              Artemisia campestris ssp. campestris
                                              Artemisia campestris ssp. canadensis
                                              Artemisia campestris ssp. caudata
                                                     [Artemisia campestris var. caudata]
                                                     [Artemisia caudata var. calvens]
                                                     [Artemisia caudata]
                                                     [Artemisia forwoodii]
                                                     [Oligosporus campestris ssp. caudatus]
                                                     [Oligosporus caudatus]
                                              Artemisia campestris ssp. glutinosa
                                              Artemisia campestris ssp. pacifica
                                                     [Artemisia campestris var. scouleriana]
                                              Artemisia campestris var. canadensis
                                              Artemisia campestris var. petiolata
                                              Artemisia campestris var. purshii
                                            Artemisia cana
                                              Artemisia cana ssp. bolanderi
                                                     [Artemisia bolanderi]
                                                     [Artemisia tridentata ssp. bolanderi]
                                                     [Artemisia tridentata var. bolanderi]
                                                     [Seriphidium canum ssp. bolanderi]
                                              Artemisia cana ssp. cana
                                              Artemisia cana ssp. viscidula
                                                     [Artemisia argilosa]
                                                     [Artemisia cana var. viscidula]
                                                     [Artemisia viscidula]
                                                     [Seriphidium canum ssp. viscidulum]
                                              Artemisia cana var. cana
                                            Artemisia canadensis
                                            Artemisia canariensis
                                            Artemisia carruthii
                                                   [Artemisia carruthii var. wrightii]
                                                   [Artemisia kansana]
                                            Artemisia caucasica
                                            Artemisia chamaemelifolia
                                            Artemisia cina
                                            Artemisia coloradensis
                                            Artemisia comata
                                            Artemisia cuneata
                                            Artemisia discolor
                                            Artemisia domingensis
                                            Artemisia douglasiana
                                                   [Artemisia vulgaris ssp. heterophylla]
                                                   [Artemisia vulgaris var. douglasiana]
                                            Artemisia dracunculina
                                            Artemisia dracunculus
                                                   [Artemisia dracunculoides var. dracunculina]
                                                   [Artemisia dracunculoides]
                                                   [Artemisia dracunculus ssp. glauca]
                                                   [Artemisia dracunculus var. glauca]
                                                   [Artemisia glauca dracunculus]
                                                   [Artemisia glauca var. dracunculina]
                                                   [Artemisia glauca]
                                                   [Oligosporus dracunculus ssp. dracunculinus]
                                                   [Oligosporus dracunculus ssp. glaucus]
                                                   [Oligosporus dracunculus]
                                              Artemisia dracunculus ssp. dracunculus
                                              Artemisia dracunculus var. dracunculus
                                            Artemisia elatior
                                            Artemisia elegantissima
                                            Artemisia filifolia
                                                   [Oligosporus filifolius]
                                            Artemisia flava
                                            Artemisia franserioides
                                            Artemisia frigida
                                            Artemisia furcata
                                              Artemisia furcata var. furcata
                                              Artemisia furcata var. heterophylla
                                            Artemisia globularia
                                              Artemisia globularia ssp. globularia
                                              Artemisia globularia ssp. lutea
                                              Artemisia globularia var. lutea
                                            Artemisia glomerata
                                              Artemisia glomerata var. glomerata
                                              Artemisia glomerata var. subglabrata
                                            Artemisia gmelinii
                                            Artemisia gnaphaloides
                                            Artemisia gorgonum
                                            Artemisia gormanii
                                            Artemisia gracillima
                                            Artemisia hedinii
                                            Artemisia herba-alba
                                            Artemisia heterophylla
                                            Artemisia hillebrandii
                                              Artemisia hillebrandii var. kauaiensis
                                            Artemisia hyperborea
                                            Artemisia incana
                                            Artemisia judaica
                                            Artemisia kauaiensis
                                            Artemisia krushiana
                                            Artemisia laciniata
                                              Artemisia laciniata ssp. laciniata
                                              Artemisia laciniata ssp. parryi
                                                     [Artemisia parryi]
                                            Artemisia laciniatiformis
                                            Artemisia lactiflora
                                            Artemisia laxa
                                            Artemisia leucotricha
                                            Artemisia lindleyana
                                                   [Artemisia prescottiana]
                                            Artemisia lingyeouruennii
                                            Artemisia longifolia
                                            Artemisia longiloba
                                            Artemisia ludoviciana
                                              Artemisia ludoviciana ssp. albula
                                                     [Artemisia albula]
                                                     [Artemisia ludoviciana var. albula]
                                              Artemisia ludoviciana ssp. candicans
                                                     [Artemisia candicans]
                                                     [Artemisia ludoviciana var. latiloba]
                                              Artemisia ludoviciana ssp. estesii
                                              Artemisia ludoviciana ssp. incompta
                                                     [Artemisia incompta]
                                                     [Artemisia ludoviciana var. incompta]
                                              Artemisia ludoviciana ssp. ludoviciana
                                                     [Artemisia diversifolia]
                                                     [Artemisia gnaphalodes]
                                                     [Artemisia herriotii]
                                                     [Artemisia ludoviciana ssp. typica]
                                                     [Artemisia ludoviciana var. americana]
                                                     [Artemisia ludoviciana var. brittonii]
                                                     [Artemisia ludoviciana var. gnaphalodes]
                                                     [Artemisia ludoviciana var. latifolia]
                                                     [Artemisia ludoviciana var. pabularis]
                                                     [Artemisia pabularis]
                                                     [Artemisia purshiana]
                                                     [Artemisia vulgaris ssp. ludoviciana]
                                                     [Artemisia vulgaris var. ludoviciana]
                                              Artemisia ludoviciana ssp. mexicana
                                                     [Artemisia ludoviciana var. mexicana]
                                                     [Artemisia mexicana]
                                                     [Artemisia neomexicana]
                                                     [Artemisia vulgaris var. mexicana]
                                              Artemisia ludoviciana ssp. redolens
                                              Artemisia ludoviciana ssp. sulcata
                                                     [Artemisia sulcata]
                                              Artemisia ludoviciana var. ludoviciana
                                              Artemisia ludoviciana var. redolens
                                            Artemisia macrobotrys
                                            Artemisia magellanica
                                            Artemisia maritima
                                            Artemisia marschalliana
                                            Artemisia mauiensis
                                              Artemisia mauiensis var. diffusa
                                            Artemisia mendozana
                                            Artemisia michauxiana
                                                   [Artemisia vulgaris ssp. michauxiana]
                                            Artemisia microcephala
                                            Artemisia minima
                                            Artemisia monosperma
                                            Artemisia natronensis
                                            Artemisia nesiotica
                                            Artemisia norvegica
                                              Artemisia norvegica ssp. norvegica
                                              Artemisia norvegica ssp. saxatilis
                                              Artemisia norvegica var. comata
                                              Artemisia norvegica var. piceetorum
                                              Artemisia norvegica var. saxatilis
                                            Artemisia nova
                                                   [Artemisia arbuscula ssp. nova]
                                                   [Artemisia arbuscula var. nova]
                                                   [Artemisia nova var. duchesnicola]
                                                   [Artemisia tridentata ssp. nova]
                                                   [Seriphidium novum]
                                              Artemisia nova var. nova
                                            Artemisia packardiae
                                            Artemisia palmeri
                                            Artemisia palustris
                                            Artemisia papposa
                                            Artemisia parishii
                                            Artemisia pattersoni
                                            Artemisia pattersonii
                                            Artemisia pedatifida
                                            Artemisia persica
                                            Artemisia petrophila
                                            Artemisia pontica
                                            Artemisia porteri
                                            Artemisia potentilloides
                                            Artemisia pringlei
                                            Artemisia procera
                                            Artemisia pudica
                                            Artemisia pycnocephala
                                            Artemisia pygmaea
                                                   [Seriphidium pygmaeum]
                                            Artemisia redolens
                                            Artemisia revoluta
                                            Artemisia richardsoniana
                                            Artemisia rigida
                                            Artemisia rothrockii
                                            Artemisia rupestris
                                              Artemisia rupestris ssp. rupestris
                                            Artemisia rutifolia
                                            Artemisia sacrorum
                                            Artemisia santolinaefolia
                                            Artemisia santolinifolia
                                            Artemisia saxicola
                                            Artemisia schrenkiana
                                            Artemisia scoparia
                                            Artemisia scopulorum
                                            Artemisia selengensis
                                            Artemisia senjavinensis
                                            Artemisia serrata
                                            Artemisia sibirica
                                            Artemisia silvicola
                                            Artemisia spiciformis
                                              Artemisia spiciformis var. longiloba
                                            Artemisia spithamaea
                                            Artemisia spithamea
                                            Artemisia splendens
                                            Artemisia stelleriana
                                            Artemisia stipularis
                                            Artemisia suksdorfii
                                            Artemisia tacomensis
                                            Artemisia thuscula
                                            Artemisia tilesii
                                              Artemisia tilesii ssp. elatior
                                              Artemisia tilesii ssp. gormanii
                                              Artemisia tilesii ssp. tilesii
                                              Artemisia tilesii ssp. unalaschcensis
                                                     [Artemisia hookeriana]
                                                     [Artemisia tilesii var. unalaschcensis]
                                              Artemisia tilesii var. aleutica
                                              Artemisia tilesii var. elatior
                                            Artemisia tridentata
                                              Artemisia tridentata ssp. arbuscula
                                              Artemisia tridentata ssp. parishii
                                                     [Artemisia tridentata var. parishii]
                                                     [Seriphidium tridentatum ssp. parishii]
                                              Artemisia tridentata ssp. rothrockii
                                              Artemisia tridentata ssp. spiciformis
                                              Artemisia tridentata ssp. tridentata
                                                     [Artemisia angusta]
                                                     [Artemisia tridentata var. angustifolia]
                                                     [Seriphidium tridentatum]
                                              Artemisia tridentata ssp. trifida
                                              Artemisia tridentata ssp. typica
                                              Artemisia tridentata ssp. vaseyana
                                                     [Artemisia tridentata var. pauciflora]
                                                     [Artemisia tridentata var. vaseyana]
                                                     [Artemisia vaseyana]
                                                     [Seriphidium tridentatum ssp. vaseyanum]
                                                     [Seriphidium vaseyanum]
                                              Artemisia tridentata ssp. wyomingensis
                                                     [Artemisia tridentata var. wyomingensis]
                                                     [Seriphidium tridentatum ssp. wyomingense]
                                              Artemisia tridentata ssp. xericensis
                                              Artemisia tridentata var. rothrockii
                                              Artemisia tridentata var. spiciformis
                                              Artemisia tridentata var. tridentata
                                              Artemisia tridentata var. trifida
                                            Artemisia trifida
                                              Artemisia trifida var. rigida
                                            Artemisia trifurcata
                                            Artemisia tripartita
                                              Artemisia tripartita ssp. rupicola
                                              Artemisia tripartita ssp. tripartita
                                              Artemisia tripartita var. rupicola
                                            Artemisia tyrellii
                                            Artemisia umbelliformis
                                            Artemisia unalaskensis
                                              Artemisia unalaskensis var. aleutica
                                            Artemisia underwoodii
                                            Artemisia verlotorum
                                            Artemisia vulgaris
                                              Artemisia vulgaris ssp. Wrighti
                                              Artemisia vulgaris ssp. gnaphalodes
                                              Artemisia vulgaris ssp. longifolia
                                              Artemisia vulgaris var. coarctata
                                              Artemisia vulgaris var. glabra
                                              Artemisia vulgaris var. kamtschatica
                                              Artemisia vulgaris var. latiloba
                                              Artemisia vulgaris var. selengensis
                                              Artemisia vulgaris var. vulgaris
                                            Artemisia wrightii
                                    Anthemis
                                            Anthemis altissima
                                            Anthemis arvensis
                                              Anthemis arvensis var. agrestis
                                            Anthemis austriaca
                                            Anthemis cotula
                                                   [Maruta cotula]
                                            Anthemis discoidea
                                            Anthemis fuscata
                                            Anthemis maris-mortui
                                            Anthemis mixta
                                            Anthemis pseudocotula
                                            Anthemis secundiramea
                                    Antheropeas
                                            Antheropeas australe
                                    Antillanthus
                                            Antillanthus cubensis
                                            Antillanthus discolor
                                                   [Antillanthus almironcillo]
                                            Antillanthus ekmanii
                                            Antillanthus eriocarphus
                                            Antillanthus leucolepis
                                            Antillanthus pachylepis
                                            Antillanthus pachypodus
                                            Antillanthus subsquarrosus
                                            Antillanthus trichotomus
                                    Antillia
                                            Antillia brachychaeta
                                    Anvillea
                                            Anvillea garcinii
                                    Apargia
                                            Apargia autumnalis
                                            Apargia hispida
                                    Apargidium
                                            Apargidium boreale
                                    Aphanactis
                                    Aphanostephus
                                            Aphanostephus kidderi
                                            Aphanostephus perennis
                                            Aphanostephus pilosus
                                            Aphanostephus ramosissimus
                                              Aphanostephus ramosissimus var. humilis
                                                     [Aphanostephus arizonicus]
                                                     [Aphanostephus humilis]
                                                     [Aphanostephus potosinus]
                                                     [Leucopsidium humile]
                                              Aphanostephus ramosissimus var. ramosissimus
                                            Aphanostephus riddellii
                                            Aphanostephus skirrhobasis
                                              Aphanostephus skirrhobasis var. kidderi
                                              Aphanostephus skirrhobasis var. skirrhobasis
                                              Aphanostephus skirrhobasis var. thalassius
                                            Aphanostephus skirrobasis
                                    Aphantochaeta
                                            Aphantochaeta exilis
                                    Aphyllocladus
                                            Aphyllocladus spartioides
                                    Aplopappus
                                    Archibaccharis
                                            Archibaccharis androgyna
                                            Archibaccharis asperifolia
                                            Archibaccharis flexilis
                                            Archibaccharis glandulosa
                                            Archibaccharis hieraciifolia
                                            Archibaccharis hieracioides
                                            Archibaccharis hirtella
                                            Archibaccharis intermedia
                                            Archibaccharis mucronata
                                            Archibaccharis peninsularis
                                            Archibaccharis schiedeana
                                            Archibaccharis serratifolia
                                            Archibaccharis sescenticeps
                                            Archibaccharis simplex
                                            Archibaccharis subsessilis
                                            Archibaccharis torquis
                                    Arctanthemum
                                            Arctanthemum arcticum
                                                   [Chrysanthemum arcticum ssp. arcticum]
                                              Arctanthemum arcticum ssp. arcticum
                                            Arctanthemum integrifolium
                                    Arctanthemumarcticum
                                            Arctanthemumarcticum ssp.
                                              Arctanthemumarcticum ssp. ssp. e
                                    Arctium
                                            Arctium lappa
                                                   [Lappa major]
                                            Arctium minus
                                                   [Lappa minor]
                                              Arctium minus ssp. nemorosum
                                            Arctium nemorosum
                                            Arctium tomentosum
                                            Arctium vulgare
                                            Arctium x mixtum
                                            Arctium x nothum
                                    Arctotheca
                                            Arctotheca calendula
                                            Arctotheca prostrata
                                    Arctotis
                                            Arctotis angustifolia
                                            Arctotis breviscapa
                                            Arctotis fastuosa
                                            Arctotis stoechadifolia
                                                   [Arctotis grandis]
                                                   [Arctotis stoechadifolia var. grandis]
                                            Arctotis venusta
                                    Argyranthemum
                                            Argyranthemum anethifolium
                                            Argyranthemum foeniculaceum
                                            Argyranthemum foeniculum
                                            Argyranthemum frutescens
                                                   [Chrysanthemum frutescens]
                                            Argyranthemum gracilis
                                    Argyrautia
                                    Argyroxiphium
                                            Argyroxiphium caliginis
                                              Argyroxiphium caliginis var. kai
                                            Argyroxiphium forbesii
                                            Argyroxiphium grayanum
                                            Argyroxiphium kauense
                                            Argyroxiphium macrocephalum
                                            Argyroxiphium sandwicense
                                              Argyroxiphium sandwicense ssp. macrocephalum
                                              Argyroxiphium sandwicense ssp. sandwicense
                                              Argyroxiphium sandwicense var. kauense
                                            Argyroxiphium virescens
                                            Argyroxiphium x kai
                                    Arida
                                            Arida arizonica
                                                   [Machaeranthera ammophila]
                                                   [Machaeranthera arida]
                                                   [Machaeranthera arizonica]
                                                   [Machaeranthera coulteri var. arida]
                                            Arida blepharophylla
                                            Arida carnosa
                                                   [Aster intricatus]
                                                   [Bigelovia intricata]
                                                   [Leucosyris carnosa var. intricata]
                                                   [Leucosyris carnosa]
                                                   [Linosyris carnosa]
                                                   [Machaeranthera carnosa var. carnosa]
                                                   [Machaeranthera carnosa var. intricata]
                                                   [Machaeranthera carnosa]
                                            Arida coulteri
                                                   [Machaeranthera coulteri]
                                                   [Psilactis coulteri]
                                            Arida crispa
                                            Arida mattturneri
                                            Arida parviflora
                                            Arida riparia
                                    Aristeguietia
                                    Arnaldoa
                                    Arnica
                                            Arnica acaulis
                                            Arnica alata
                                            Arnica alpina
                                              Arnica alpina ssp. angustifolia
                                              Arnica alpina ssp. attenuata
                                              Arnica alpina ssp. lonchophylla
                                              Arnica alpina ssp. sornborgeri
                                              Arnica alpina ssp. tomentosa
                                              Arnica alpina var. angustifolia
                                              Arnica alpina var. attenuata
                                              Arnica alpina var. linearis
                                              Arnica alpina var. lonchophylla
                                              Arnica alpina var. plantaginea
                                              Arnica alpina var. tomentosa
                                              Arnica alpina var. ungavensis
                                              Arnica alpina var. vestita
                                            Arnica amplexicaulis
                                              Arnica amplexicaulis ssp. genuina
                                              Arnica amplexicaulis ssp. prima
                                              Arnica amplexicaulis var. piperi
                                              Arnica amplexicaulis var. prima
                                            Arnica amplexifolia
                                            Arnica angustifolia
                                              Arnica angustifolia ssp. angustifolia
                                              Arnica angustifolia ssp. attenuata
                                              Arnica angustifolia ssp. lonchophylla
                                              Arnica angustifolia ssp. tomentosa
                                              Arnica angustifolia var. tomentosa
                                            Arnica arnoglossa
                                            Arnica austinae
                                            Arnica betonicifolia
                                            Arnica bruceae
                                            Arnica caespitosa
                                            Arnica cana
                                            Arnica cascadensis
                                            Arnica caudata
                                            Arnica celsa
                                            Arnica cernua
                                            Arnica chamissonis
                                                   [Arnica foliosa var. bernardina]
                                              Arnica chamissonis ssp. chamissonis
                                              Arnica chamissonis ssp. foliosa
                                                     [Arnica bernardina]
                                                     [Arnica chamissonis ssp. incana]
                                                     [Arnica foliosa var. incana]
                                              Arnica chamissonis ssp. genuina
                                              Arnica chamissonis var. andina
                                                     [Arnica chamissonis var. foliosa]
                                                     [Arnica chamissonis var. jepsoniana]
                                                     [Arnica foliosa]
                                              Arnica chamissonis var. incana
                                              Arnica chamissonis var. longinodosa
                                            Arnica chandleri
                                            Arnica chionopappa
                                            Arnica ciliaris
                                            Arnica coloradensis
                                            Arnica cordata
                                            Arnica cordifolia
                                                   [Arnica cordifolia ssp. genuina]
                                                   [Arnica cordifolia var. humilis]
                                                   [Arnica cordifolia var. pumila]
                                                   [Arnica cordifolia var. whitneyi]
                                                   [Arnica hardinae]
                                                   [Arnica humilis]
                                                   [Arnica paniculata]
                                                   [Arnica whitneyi]
                                              Arnica cordifolia var. cordifolia
                                              Arnica cordifolia var. macrophylla
                                            Arnica cusickii
                                            Arnica dealbata
                                            Arnica discoidea
                                              Arnica discoidea var. alata
                                              Arnica discoidea var. eradiata
                                            Arnica diversifolia
                                            Arnica eastwoodiae
                                            Arnica frigida
                                              Arnica frigida ssp. frigida
                                              Arnica frigida ssp. griscomii
                                              Arnica frigida var. glandulosa
                                            Arnica fulgens
                                                   [Arnica pedunculata]
                                            Arnica gaspensis
                                            Arnica gracilis
                                                   [Arnica arcana]
                                            Arnica granulifera
                                            Arnica grayi
                                            Arnica griscomii
                                              Arnica griscomii ssp. frigida
                                              Arnica griscomii ssp. griscomii
                                            Arnica jonesii
                                            Arnica lanceolata
                                              Arnica lanceolata ssp. lanceolata
                                              Arnica lanceolata ssp. prima
                                            Arnica lanulosa
                                            Arnica latifolia
                                                   [Arnica latifolia var. angustifolia]
                                              Arnica latifolia var. gracilis
                                              Arnica latifolia var. latifolia
                                              Arnica latifolia var. teucriifolia
                                            Arnica lessingii
                                                   [Arnica lessingii ssp. norbergii]
                                            Arnica lonchophylla
                                              Arnica lonchophylla ssp. arnoglossa
                                              Arnica lonchophylla ssp. chionopappa
                                              Arnica lonchophylla ssp. lonchophylla
                                              Arnica lonchophylla var. arnoglossa
                                            Arnica longifolia
                                                   [Arnica longifolia ssp. genuina]
                                                   [Arnica longifolia ssp. myriadenia]
                                              Arnica longifolia subsp. longifolia
                                            Arnica louiseana
                                              Arnica louiseana ssp. frigida
                                              Arnica louiseana ssp. griscomii
                                              Arnica louiseana var. brevifolia
                                              Arnica louiseana var. frigida
                                              Arnica louiseana var. genuina
                                              Arnica louiseana var. illiamnae
                                              Arnica louiseana var. mendenhallii
                                              Arnica louiseana var. pilosa
                                            Arnica macilenta
                                            Arnica maguirei
                                            Arnica menziesii
                                            Arnica mollis
                                                   [Arnica mollis var. silvatica]
                                                   [Arnica rivularis]
                                              Arnica mollis var. aspera
                                              Arnica mollis var. mollis
                                              Arnica mollis var. petiolaris
                                            Arnica montana
                                            Arnica nevadensis
                                            Arnica ocreata
                                            Arnica ovata
                                                   [Arnica latifolia var. viscidula]
                                            Arnica parryi
                                                   [Arnica eradiata]
                                              Arnica parryi ssp. genuina
                                              Arnica parryi ssp. parryi
                                              Arnica parryi ssp. sonnei
                                              Arnica parryi var. crinita
                                              Arnica parryi var. sonnei
                                            Arnica parviflora
                                              Arnica parviflora ssp. alata
                                            Arnica parvifolia
                                            Arnica plantaginea
                                            Arnica platyphylla
                                            Arnica pumila
                                            Arnica rhizomata
                                            Arnica rydbergii
                                            Arnica sanhedrensis
                                            Arnica silvatica
                                            Arnica snyderi
                                            Arnica sonnei
                                            Arnica sornborgeri
                                            Arnica sororia
                                                   [Arnica fulgens var. sororia]
                                            Arnica spathulata
                                              Arnica spathulata ssp. eastwoodiae
                                              Arnica spathulata var. eastwoodiae
                                            Arnica subplumosa
                                              Arnica subplumosa var. sylvatica
                                            Arnica terrae-novae
                                            Arnica tomentella
                                            Arnica tomentosa
                                            Arnica unalaschcensis
                                            Arnica venosa
                                            Arnica ventorum
                                            Arnica viscosa
                                            Arnica x diversifolia
                                    Arnicastrum
                                            Arnicastrum glandulosum
                                    Arnoglossum
                                            Arnoglossum album
                                            Arnoglossum atriplicifolium
                                                   [Cacalia atriplicifolia]
                                                   [Cacalia rotundifolia]
                                                   [Mesadenia atriplicifolia]
                                            Arnoglossum diversifolium
                                            Arnoglossum floridanum
                                            Arnoglossum muehlenbergii
                                            Arnoglossum ovatum
                                                   [Cacalia elliottii]
                                                   [Cacalia lanceolata var. elliottii]
                                                   [Cacalia lanceolata var. virescens]
                                                   [Cacalia lanceolata]
                                                   [Cacalia ovata]
                                                   [Mesadenia elliottii]
                                                   [Mesadenia lanceolata var. virescens]
                                                   [Mesadenia lanceolata]
                                                   [Mesadenia maxima]
                                            Arnoglossum plantagineum
                                                   [Cacalia paniculata]
                                                   [Cacalia plantaginea]
                                                   [Cacalia pteranthes]
                                                   [Cacalia tuberosa]
                                                   [Mesadenia tuberosa]
                                            Arnoglossum reniforme
                                            Arnoglossum sulcatum
                                    Arnoseris
                                            Arnoseris minima
                                    Asanthus
                                            Asanthus squamulosus
                                                   [Brickellia squamulosa]
                                    Ascidiogyne
                                    Askellia
                                            Askellia elegans
                                            Askellia nana
                                              Askellia nana ssp. ramosa
                                    Aspilia
                                            Aspilia apensis
                                            Aspilia attenuata
                                            Aspilia clausseniana
                                            Aspilia cupulata
                                            Aspilia cylindrocephala
                                            Aspilia floribunda
                                            Aspilia foliosa
                                            Aspilia hassleriana
                                            Aspilia heringeriana
                                            Aspilia latissima
                                            Aspilia mexicana
                                            Aspilia montevidensis
                                            Aspilia rosei
                                            Aspilia silphioides
                                            Aspilia stenophylla
                                    Asplundianthus
                                    Aster
                                            Aster acadiensis
                                            Aster acuminatus
                                              Aster acuminatus var. magdalenensis
                                            Aster adnatus
                                            Aster agrostifolius
                                            Aster alpigenus
                                              Aster alpigenus ssp. andersonii
                                              Aster alpigenus ssp. haydenii
                                              Aster alpigenus var. andersonii
                                              Aster alpigenus var. haydenii
                                            Aster alpinus
                                              Aster alpinus ssp. vierhapperi
                                              Aster alpinus var. alpinus
                                              Aster alpinus var. serpentimontanus
                                              Aster alpinus var. vierhapperi
                                            Aster altaicus
                                            Aster amelloides
                                            Aster amellus
                                              Aster amellus ssp. ibericus
                                            Aster amethystinus
                                            Aster andersonii
                                            Aster anomalus
                                            Aster anticostensis
                                            Aster apricus
                                                   [Aster foliaceus var. apricus]
                                            Aster asperifolius
                                            Aster asperugineus
                                            Aster avitus
                                            Aster azureus
                                              Aster azureus var. poaceus
                                            Aster batesii
                                            Aster behringensis
                                            Aster bernardinus
                                            Aster bietii
                                            Aster blakei
                                            Aster bloomeri
                                            Aster borealis
                                            Aster bracei
                                            Aster brachypholis
                                            Aster brachytrichus
                                            Aster brevilingulatus
                                            Aster breweri
                                            Aster brickellioides
                                              Aster brickellioides var. glabratus
                                            Aster bullatus
                                            Aster calderi
                                            Aster campestris
                                              Aster campestris var. bloomeri
                                            Aster camptosorus
                                            Aster carnerosanus
                                            Aster carnosus
                                            Aster carolinianus
                                            Aster caucasicus
                                            Aster chapmanii
                                            Aster chasei
                                            Aster chinensis
                                            Aster chlorolepis
                                                   [Aster divaricatus var. chlorolepis]
                                            Aster ciliolatus
                                              Aster ciliolatus var. comatus
                                              Aster ciliolatus var. maccallae
                                              Aster ciliolatus var. wilsonii
                                            Aster claviger
                                            Aster cognatus
                                            Aster coloradensis
                                            Aster coloradoensis
                                            Aster columbianus
                                            Aster commixtus
                                            Aster concinnus
                                                   [Aster laevis var. concinnus]
                                            Aster concolor
                                              Aster concolor var. simulatus
                                            Aster conduplicatus
                                            Aster conspicuus
                                            Aster continuus
                                            Aster copelandii
                                            Aster coridifolius
                                            Aster corrigiatus
                                            Aster corymbiformis
                                            Aster covillei
                                            Aster crenifolius
                                            Aster curtisii
                                            Aster curtus
                                            Aster curvescens
                                            Aster cusickii
                                                   [Aster foliaceus var. cusickii]
                                              Aster cusickii var. lyallii
                                            Aster defoliatus
                                            Aster depauperatus
                                              Aster depauperatus var. parviceps
                                            Aster deserticola
                                            Aster diffusus
                                              Aster diffusus var. thyrsoides
                                            Aster diplostephioides
                                            Aster diversifolius
                                            Aster douglasii
                                            Aster dracunculoides
                                            Aster drummondii
                                                   [Aster sagittifolius var. drummondii]
                                              Aster drummondii ssp. parviceps
                                              Aster drummondii ssp. texanus
                                              Aster drummondii var. parviceps
                                              Aster drummondii var. texanus
                                            Aster dumosus
                                              Aster dumosus var. coridifolius
                                              Aster dumosus var. dodgei
                                              Aster dumosus var. gracilentus
                                              Aster dumosus var. gracilipes
                                              Aster dumosus var. pergracilis
                                              Aster dumosus var. strictior
                                              Aster dumosus var. subulifolius
                                            Aster elatus
                                            Aster elliottii
                                            Aster elodes
                                            Aster engelmannii
                                                   [Aster elegans var. engelmannii]
                                              Aster engelmannii var. glaucescens
                                              Aster engelmannii var. ledophyllus
                                              Aster engelmannii var. paucicapitatus
                                            Aster eryngiifolius
                                            Aster eulae
                                            Aster farreri
                                            Aster faxonii
                                            Aster finkii
                                            Aster firmus
                                            Aster flaccidus
                                              Aster flaccidus var. flaccidus
                                            Aster fontinalis
                                            Aster forwoodii
                                            Aster fragilis
                                              Aster fragilis var. brachypholis
                                              Aster fragilis var. subdumosus
                                            Aster franklinianus
                                            Aster frutescens
                                            Aster fruticosus
                                            Aster fulcratus
                                            Aster furcatus
                                            Aster garibaldii
                                            Aster gaspensis
                                            Aster gentryi
                                            Aster georgianus
                                                   [Aster patens var. georgianus]
                                            Aster glabriuscula
                                              Aster glabriuscula var. parryi
                                            Aster glaucescens
                                            Aster glehnii
                                            Aster glomeratus
                                            Aster gormanii
                                            Aster gracilescens
                                            Aster gracilipes
                                            Aster gracilis
                                                   [Aster patens var. gracilis]
                                            Aster grandiflorus
                                            Aster gravesii
                                            Aster grayi
                                            Aster greatae
                                            Aster greatai
                                            Aster griseolus
                                            Aster hallii
                                                   [Aster chilensis ssp. hallii]
                                            Aster haydenii
                                            Aster hemisphericus
                                                   [Aster paludosus ssp. hemisphericus]
                                            Aster hendersonii
                                            Aster herveyi
                                            Aster himalaicus
                                            Aster hirsuticaulis
                                            Aster hirtellus
                                            Aster horizontalis
                                            Aster humilis
                                            Aster hybridus
                                              Aster hybridus var. luteus
                                            Aster ibericus
                                            Aster infirmus
                                            Aster invenustus
                                                   [Aster chilensis var. invenustus]
                                            Aster jessicae
                                            Aster johannensis
                                              Aster johannensis var. villicaulis
                                            Aster jonesiae
                                            Aster junciformis
                                            Aster juniperinus
                                            Aster kentuckiensis
                                            Aster kingii
                                              Aster kingii var. barnebyana
                                            Aster lanceolatus
                                            Aster lateriflorus
                                              Aster lateriflorus var. angustifolius
                                              Aster lateriflorus var. flagellaris
                                              Aster lateriflorus var. hirsuticaulis
                                              Aster lateriflorus var. horizontalis
                                              Aster lateriflorus var. indutus
                                              Aster lateriflorus var. pendulus
                                              Aster lateriflorus var. spatelliformis
                                              Aster lateriflorus var. tenuipes
                                              Aster lateriflorus var. thyrsoides
                                            Aster latissimifolius
                                            Aster laurentianus
                                              Aster laurentianus var. laurentianus
                                              Aster laurentianus var. magdalenensis
                                            Aster laxifolius
                                              Aster laxifolius var. borealis
                                            Aster ledophyllus
                                              Aster ledophyllus var. covillei
                                            Aster lentus
                                                   [Aster chilensis var. lentus]
                                            Aster lepidopodus
                                            Aster leucopsis
                                            Aster lima
                                            Aster linariifolius
                                              Aster linariifolius var. victorinii
                                            Aster lindleyanus
                                            Aster linearifolius
                                            Aster linguiformis
                                            Aster linosyris
                                            Aster lonchophyllus
                                            Aster longulus
                                            Aster loriformis
                                            Aster lowrieanus
                                            Aster lucidulus
                                            Aster lutescens
                                            Aster maackii
                                            Aster maccallae
                                            Aster major
                                            Aster meritus
                                            Aster microphyllus
                                                   [Aster sericeus var. microphyllus]
                                            Aster mirabilis
                                            Aster missouriensis
                                              Aster missouriensis var. thyrsoides
                                            Aster modestus
                                            Aster mohrii
                                            Aster mollis
                                            Aster molliusculus
                                            Aster mongolicus
                                            Aster moranensis
                                            Aster nebraskensis
                                                   [Aster praealtus var. nebraskensis]
                                            Aster nemoralis
                                            Aster novi-belgii
                                              Aster novi-belgii ssp. johannensis
                                              Aster novi-belgii ssp. tardiflorus
                                              Aster novi-belgii var. crenifolius
                                              Aster novi-belgii var. elodes
                                              Aster novi-belgii var. johannensis
                                              Aster novi-belgii var. tardiflorus
                                              Aster novi-belgii var. villicaulis
                                            Aster nudatus
                                            Aster ontarionis
                                              Aster ontarionis var. glabratus
                                            Aster oolentangiensis
                                              Aster oolentangiensis var. laevicaulis
                                              Aster oolentangiensis var. poaceus
                                            Aster oregonensis
                                              Aster oregonensis ssp. californicus
                                            Aster oregonum
                                            Aster oreophilus
                                            Aster paludicola
                                            Aster pantotrichus
                                              Aster pantotrichus var. thyrsoides
                                            Aster parryi
                                            Aster parviceps
                                                   [Aster ericoides var. parviceps]
                                            Aster patentissimus
                                                   [Aster patens var. patentissimus]
                                            Aster paucicapitatus
                                            Aster pedionomus
                                            Aster peirsonii
                                            Aster pendulus
                                            Aster phyllolepis
                                            Aster pilosus
                                              Aster pilosus ssp. parviceps
                                              Aster pilosus var. demotus
                                              Aster pilosus var. platyphyllus
                                              Aster pilosus var. priceae
                                              Aster pilosus var. pringlei
                                              Aster pilosus var. pusillus
                                            Aster plumosus
                                            Aster poaceus
                                            Aster pratensis
                                            Aster prenanthoides
                                            Aster priceae
                                            Aster pringlei
                                                   [Aster ericoides var. pringlei]
                                            Aster proteus
                                            Aster ptarmicoides
                                              Aster ptarmicoides var. georgianus
                                              Aster ptarmicoides var. lutescens
                                            Aster pubentior
                                            Aster pulchellus
                                            Aster punctatus
                                            Aster puniceus
                                              Aster puniceus ssp. elliottii
                                              Aster puniceus ssp. firmus
                                              Aster puniceus var. calderi
                                              Aster puniceus var. calvus
                                              Aster puniceus var. compactus
                                              Aster puniceus var. demissus
                                              Aster puniceus var. elliottii
                                              Aster puniceus var. firmus
                                              Aster puniceus var. lucidulus
                                              Aster puniceus var. oligocephalus
                                              Aster puniceus var. perlongus
                                              Aster puniceus var. scabricaulis
                                            Aster purpuratus
                                                   [Aster laevis var. purpuratus]
                                            Aster pygmaeus
                                            Aster pyrenaeus
                                            Aster racemosus
                                            Aster radula
                                              Aster radula var. strictus
                                            Aster reticulatus
                                            Aster retroflexus
                                            Aster richardsonii
                                            Aster robynsianus
                                            Aster rolandii
                                            Aster rotundifolius
                                            Aster sandwicensis
                                                   [Aster divaricatus var. sandwicensis]
                                            Aster saundersii
                                            Aster saxatilis
                                            Aster saxicastellii
                                            Aster scaber
                                            Aster scabricaulis
                                            Aster schaffneri
                                            Aster schistosus
                                            Aster schreberi
                                            Aster scopulorum
                                            Aster sedifolius
                                              Aster sedifolius ssp. dracunculoides
                                            Aster sericocarpoides
                                            Aster serpentimontanus
                                            Aster shortii
                                            Aster sibiricus
                                              Aster sibiricus ssp. pygmaeus
                                              Aster sibiricus ssp. richardsonii
                                              Aster sibiricus var. giganteus
                                              Aster sibiricus var. meritus
                                              Aster sibiricus var. pygmaeus
                                            Aster simmondsii
                                            Aster simulatus
                                            Aster siskiyouensis
                                            Aster smallii
                                            Aster solidagineus
                                            Aster sonomensis
                                                   [Aster chilensis var. sonomensis]
                                            Aster spatelliformis
                                            Aster spectabilis
                                              Aster spectabilis var. cinerascens
                                              Aster spectabilis var. suffultus
                                            Aster spinulosus
                                            Aster squamatus
                                            Aster standleyi
                                            Aster stenomeres
                                            Aster subasper
                                                   [Aster praealtus var. subasper]
                                            Aster subgeminatus
                                                   [Aster foliaceus var. subgeminatus]
                                            Aster subintegerrimus
                                            Aster subsalignus
                                            Aster subsessilis
                                            Aster subspicatus
                                              Aster subspicatus var. apricus
                                              Aster subspicatus var. grayi
                                            Aster subulatus
                                              Aster subulatus var. australis
                                              Aster subulatus var. elongatus
                                              Aster subulatus var. parviflorus
                                              Aster subulatus var. sandwicensis
                                            Aster sulznerae
                                            Aster surculosus
                                            Aster sylvestris
                                            Aster tardiflorus
                                              Aster tardiflorus var. vestitus
                                            Aster tataricus
                                            Aster tenerrimus
                                            Aster tenuicaulis
                                            Aster tenuifolius
                                              Aster tenuifolius var. aphyllus
                                            Aster texanus
                                              Aster texanus var. parviceps
                                            Aster thermalis
                                            Aster thomsonii
                                            Aster tibeticus
                                            Aster tongolensis
                                            Aster torreyi
                                            Aster tradescantii
                                              Aster tradescantii var. saxatilis
                                              Aster tradescantii var. thyrsoides
                                            Aster triangularis
                                            Aster trilineatus
                                            Aster truellius
                                            Aster turbinellus
                                            Aster uliginosus
                                            Aster umbellatus
                                              Aster umbellatus var. brevisquamis
                                              Aster umbellatus var. latifolius
                                              Aster umbellatus var. pubens
                                            Aster unalaschkensis
                                              Aster unalaschkensis var. major
                                            Aster underwoodii
                                            Aster undulatus
                                              Aster undulatus var. asperulus
                                              Aster undulatus var. diversifolius
                                              Aster undulatus var. loriformis
                                              Aster undulatus var. triangularis
                                            Aster urophyllus
                                                   [Aster sagittifolius var. urophyllus]
                                            Aster vahlii
                                            Aster vernalis
                                            Aster verutifolius
                                            Aster vialis
                                            Aster villosus
                                                   [Aster ericoides var. villosus]
                                            Aster vimineus
                                              Aster vimineus var. saxatilis
                                              Aster vimineus var. subdumosus
                                            Aster walteri
                                            Aster watsonii
                                            Aster wilsonii
                                            Aster woldenii
                                            Aster woodhousei
                                            Aster x amethystinus
                                            Aster x batesii
                                            Aster x columbianus
                                            Aster x gravesii
                                            Aster x herveyi
                                            Aster x longulus
                                            Aster x salignus
                                            Aster x schistosus
                                            Aster x tardiflorus
                                            Aster x versicolor
                                            Aster x woldenii
                                            Aster xylorhiza
                                            Aster yosemitanus
                                                   [Aster ascendens var. yosemitanus]
                                                   [Aster occidentalis var. yosemitanus]
                                            Aster yukonensis
                                            Aster yunnanensis
                                Astereae
                                    Dieteria
                                            Dieteria asteroides
                                                   [Aster amplifolius]
                                                   [Aster boltoniae]
                                                   [Aster canescens var. latifolius]
                                                   [Aster canescens var. tephrodes]
                                                   [Aster tephrodes]
                                                   [Machaeranthera amplifolia]
                                                   [Machaeranthera asteroides var. asteroides x glandulosa]
                                                   [Machaeranthera asteroides]
                                                   [Machaeranthera boltoniae]
                                                   [Machaeranthera canescens var. latifolia]
                                                   [Machaeranthera canescens var. tephrodes]
                                                   [Machaeranthera hansonii]
                                                   [Machaeranthera lagunensis]
                                                   [Machaeranthera pruinosa]
                                                   [Machaeranthera simplex]
                                                   [Machaeranthera tephrodes]
                                                   [Machaeranthera verna]
                                                   [Psilactis asteroides]
                                                   [Psilactis leptos]
                                              Dieteria asteroides var. asteroides
                                              Dieteria asteroides var. glandulosa
                                                     [Machaeranthera asteroides var. glandulosa]
                                              Dieteria asteroides var. lagunensis
                                                     [Machaeranthera asteroides var. lagunensis]
                                            Dieteria bigelovii
                                                   [Aster bigelovii]
                                                   [Dieteria canescens var. incana]
                                                   [Machaeranthera bigelovii]
                                                   [Machaeranthera canescens var. alpina]
                                                   [Machaeranthera canescens var. incana]
                                              Dieteria bigelovii var. bigelovii
                                                     [Aster aquifolius]
                                                     [Aster pattersonii]
                                                     [Aster rubrotinctus]
                                                     [Machaeranthera aquifolia]
                                                     [Machaeranthera aspera]
                                                     [Machaeranthera bigelovii var. bigelovii]
                                                     [Machaeranthera centaureoides]
                                                     [Machaeranthera pattersonii]
                                                     [Machaeranthera rubricaulis]
                                              Dieteria bigelovii var. commixta
                                                     [Machaeranthera bigelovii var. commixta]
                                                     [Machaeranthera canescens var. commixta]
                                                     [Machaeranthera commixta]
                                              Dieteria bigelovii var. mucronata
                                                     [Aster adenolepis]
                                                     [Machaeranthera bigelovii var. mucronata]
                                                     [Machaeranthera mucronata]
                                            Dieteria canescens
                                                   [Machaeranthera canescens]
                                              Dieteria canescens var. ambigua
                                                     [Machaeranthera canescens var. ambigua]
                                                     [Machaeranthera oxylepis]
                                                     [Machaeranthera scoparia]
                                              Dieteria canescens var. aristata
                                                     [Aster canescens var. aristatus]
                                                     [Aster cichoriaceus]
                                                     [Machaeranthera canescens var. aristata]
                                                     [Machaeranthera canescens var. vacans]
                                                     [Machaeranthera cichoriacea]
                                                     [Machaeranthera pulverulenta var. vacans]
                                                     [Machaeranthera rigida]
                                              Dieteria canescens var. canescens
                                                     [Aster attenuatus]
                                                     [Aster inornatus]
                                                     [Aster leucanthemifolius]
                                                     [Aster shastensis var. eradiatus]
                                                     [Aster shastensis]
                                                     [Dieteria incana]
                                                     [Dieteria sessiliflora]
                                                     [Diplopappus incanus]
                                                     [Machaeranthera attenuata]
                                                     [Machaeranthera canescens ssp. canescens]
                                                     [Machaeranthera canescens var. canescens]
                                                     [Machaeranthera eradiata]
                                                     [Machaeranthera hiemalis]
                                                     [Machaeranthera incana]
                                                     [Machaeranthera inops var. atrata]
                                                     [Machaeranthera inops]
                                                     [Machaeranthera inornata]
                                                     [Machaeranthera leucanthemifolia]
                                                     [Machaeranthera magna]
                                                     [Machaeranthera sessiliflora]
                                              Dieteria canescens var. glabra
                                                     [Aster canescens var. viridis]
                                                     [Aster linearis]
                                                     [Machaeranthera canescens ssp. glabra]
                                                     [Machaeranthera canescens var. glabra]
                                                     [Machaeranthera canescens var. viridis]
                                                     [Machaeranthera fremontii]
                                              Dieteria canescens var. leucanthemifolia
                                                     [Machaeranthera canescens var. leucanthemifolia]
                                              Dieteria canescens var. nebraskana
                                                     [Machaeranthera canescens var. nebraskana]
                                              Dieteria canescens var. sessiliflora
                                              Dieteria canescens var. shastensis
                                                     [Machaeranthera canescens var. shastensis]
                                                     [Machaeranthera shastensis var. eradiata]
                                                     [Machaeranthera shastensis]
                                              Dieteria canescens var. ziegleri
                                                     [Machaeranthera canescens ssp. ziegleri]
                                                     [Machaeranthera canescens var. ziegleri]
                                            Herrickia glauca
                                                   [Aster glaucodes var. formosus]
                                                   [Aster glaucodes]
                                                   [Aster glaucus]
                                                   [Eucephalus formosus]
                                                   [Eucephalus glaucus]
                                                   [Eurybia glauca]
                                              Herrickia glauca var. glauca
                                              Herrickia glauca var. pulchra
                                    Petradoria
                                            Petradoria graminea
                                            Petradoria pumila
                                              Petradoria pumila ssp. pumila
                                                     [Solidago petradoria]
                                              Petradoria pumila var. graminea
                                                     [Petradoria pumila ssp. graminea]
                                              Petradoria pumila var. pumila
                                    Asteriscus
                                            Asteriscus aquaticus
                                            Asteriscus graveolens
                                            Asteriscus pygmaeus
                                    Astranthium
                                            Astranthium beamanii
                                            Astranthium ciliatum
                                            Astranthium condimentum
                                            Astranthium integrifolium
                                              Astranthium integrifolium ssp. ciliatum
                                              Astranthium integrifolium ssp. integrifolium
                                              Astranthium integrifolium var. ciliatum
                                              Astranthium integrifolium var. robustum
                                              Astranthium integrifolium var. triflorum
                                            Astranthium mexicanum
                                              Astranthium mexicanum var. chihuahuense
                                            Astranthium orthopodium
                                            Astranthium orthopodum
                                            Astranthium purpurascens
                                            Astranthium robustum
                                            Astranthium splendens
                                            Astranthium xanthocomoides
                                            Astranthium xylopodum
                                    Athanasia
                                            Athanasia acerosa
                                            Athanasia parviflora
                                            Athanasia tomentosa
                                    Atractylis
                                            Atractylis prolifera
                                    Atrichoseris
                                            Atrichoseris platyphylla
                                                   [Malacothrix platyphylla]
                                    Austrobrickellia
                                    Austroeupatorium
                                            Austroeupatorium inulaefolium
                                            Austroeupatorium laetevirens
                                    Ayapana
                                            Ayapana triplinervis
                                    Ayapanopsis
                                    Aynia
                                    Aztecaster
                                            Aztecaster matudae
                                            Aztecaster pyramidatus
                                    Baccharidastrum
                                            Baccharidastrum argutum
                                    Baccharidiopsis
                                            Baccharidiopsis pohlii
                                    Baccharis
                                            Baccharis angusticeps
                                            Baccharis angustifolia
                                            Baccharis aphylla
                                            Baccharis aracatubensis
                                            Baccharis articulata
                                            Baccharis axillaris
                                            Baccharis bezanilleana
                                            Baccharis bigelovii
                                            Baccharis boliviensis
                                            Baccharis brachylaenoides
                                            Baccharis brachyphylla
                                            Baccharis calvescens
                                            Baccharis capitata
                                            Baccharis cognata
                                            Baccharis concava
                                            Baccharis conferta
                                            Baccharis coridifolia
                                            Baccharis crassicuneata
                                            Baccharis curitybensis
                                            Baccharis cylindrica
                                            Baccharis darwinii
                                            Baccharis dioica
                                            Baccharis douglasii
                                            Baccharis dracunculifolia
                                            Baccharis elaeagnoides
                                            Baccharis elaeoides
                                            Baccharis flabellata
                                            Baccharis gaudichaudiana
                                            Baccharis genistelloides
                                            Baccharis glandulifera
                                            Baccharis glomeruliflora
                                            Baccharis gracillima
                                            Baccharis haitiensis
                                            Baccharis halimifolia
                                                   [Baccharis halimifolia var. angustior]
                                            Baccharis havardii
                                            Baccharis helichrysoides
                                            Baccharis heterophylla
                                            Baccharis hieracifolia
                                            Baccharis illinita
                                            Baccharis juncea
                                            Baccharis latifolia
                                            Baccharis linearis
                                            Baccharis macrocephala
                                            Baccharis magellanica
                                            Baccharis malibuensis
                                            Baccharis megapotamica
                                            Baccharis mexicana
                                            Baccharis monoica
                                            Baccharis mucronata
                                            Baccharis multiflora
                                              Baccharis multiflora var. brevipappa
                                            Baccharis myriocephala
                                            Baccharis myrsinites
                                            Baccharis neglecta
                                            Baccharis nervosa
                                            Baccharis nipensis
                                            Baccharis nivalis
                                            Baccharis notosergila
                                            Baccharis nummularia
                                            Baccharis obovata
                                            Baccharis ochracea
                                            Baccharis oreophila
                                            Baccharis orientalis
                                            Baccharis oxyodonta
                                            Baccharis patagonica
                                            Baccharis pauciflosculosa
                                            Baccharis pedunculata
                                            Baccharis penningtonii
                                            Baccharis pentodonta
                                            Baccharis pentziaefolia
                                            Baccharis pilularis
                                                   [Baccharis pilularis var. consanguinea]
                                              Baccharis pilularis ssp. consanguinea
                                              Baccharis pilularis ssp. pilularis
                                            Baccharis pingraea
                                            Baccharis platypoda
                                            Baccharis plummerae
                                              Baccharis plummerae ssp. glabrata
                                              Baccharis plummerae ssp. plummerae
                                            Baccharis potosina
                                            Baccharis pteronioides
                                            Baccharis punctulata
                                            Baccharis racemosa
                                            Baccharis ramulosa
                                            Baccharis rhetinodes
                                            Baccharis rufescens
                                            Baccharis salicifolia
                                                   [Baccharis glutinosa]
                                                   [Baccharis viminea var. atwoodii]
                                                   [Baccharis viminea]
                                                   [Molina salicifolia]
                                            Baccharis salicina
                                                   [Baccharis emoryi]
                                            Baccharis sarothroides
                                            Baccharis scandens
                                            Baccharis schultzii
                                            Baccharis scoparia
                                            Baccharis scoparioides
                                            Baccharis selloi
                                            Baccharis semiserrata
                                            Baccharis sergiloides
                                            Baccharis serraefolia
                                            Baccharis serrulata
                                            Baccharis sessiliflora
                                            Baccharis shaferi
                                            Baccharis sordescens
                                            Baccharis spicata
                                            Baccharis squarrosa
                                            Baccharis stenocephala
                                            Baccharis stenophylla
                                            Baccharis stylosa
                                            Baccharis subdentata
                                            Baccharis sulcata
                                            Baccharis tarchonanthoides
                                            Baccharis texana
                                                   [Linosyris texana]
                                            Baccharis thesioides
                                            Baccharis trimera
                                            Baccharis trinervis
                                            Baccharis ulicina
                                            Baccharis uncinella
                                            Baccharis vaccinioides
                                            Baccharis vanessae
                                            Baccharis wrightii
                                              Baccharis wrightii var. pyrrhopappa
                                            Baccharis zamoranensis
                                    Badilloa
                                    Baeria
                                            Baeria bakeri
                                            Baeria burkei
                                            Baeria carnosa
                                            Baeria debilis
                                            Baeria fremontii
                                              Baeria fremontii var. conjugens
                                              Baeria fremontii var. heterochaeta
                                            Baeria leptalea
                                            Baeria macrantha
                                              Baeria macrantha var. bakeri
                                              Baeria macrantha var. pauciaristata
                                              Baeria macrantha var. thalassophila
                                            Baeria maritima
                                                   [Baeria minor ssp. maritima]
                                            Baeria microglossa
                                            Baeria mutica
                                              Baeria palmeri var. clementina
                                            Baeria platycarpha
                                            Baeria tenella
                                    Baeriopsis
                                            Baeriopsis guadalupensis
                                    Bahia
                                            Bahia absinthifolia
                                              Bahia absinthifolia var. absinthifolia
                                              Bahia absinthifolia var. dealbata
                                            Bahia ambrosioides
                                            Bahia anthemoides
                                            Bahia autumnalis
                                            Bahia bigelovii
                                            Bahia biternata
                                            Bahia chrysanthemoides
                                            Bahia glandulosa
                                            Bahia lanata
                                              Bahia lanata var. grandiflora
                                            Bahia nudicaulis
                                            Bahia palmeri
                                            Bahia parviflora
                                            Bahia pedata
                                            Bahia pringlei
                                            Bahia rubella
                                            Bahia schaffneri
                                            Bahia xylopoda
                                    Bahiopsis
                                            Bahiopsis chenopodina
                                            Bahiopsis laciniata
                                            Bahiopsis parishii
                                                   [Viguiera deltoidea var. parishii]
                                                   [Viguiera parishii]
                                            Bahiopsis reticulata
                                            Bahiopsis triangularis
                                    Baileya
                                            Baileya multiradiata
                                                   [Baileya multiradiata var. thurberi]
                                              Baileya multiradiata var. multiradiata
                                            Baileya nervosa
                                            Baileya pauciradiata
                                            Baileya pleniradiata
                                                   [Baileya multiradiata var. pleniradiata]
                                                   [Baileya perennis]
                                              Baileya pleniradiata var. perennis
                                            Baileya thurberi
                                    Bajacalia
                                            Bajacalia crassifolia
                                    Balduina
                                            Balduina angustifolia
                                            Balduina atropurpurea
                                            Balduina uniflora
                                    Balsamita
                                    Balsamorhiza
                                            Balsamorhiza bolanderi
                                            Balsamorhiza careyana
                                              Balsamorhiza careyana var. careyana
                                              Balsamorhiza careyana var. intermedia
                                            Balsamorhiza deltoidea
                                            Balsamorhiza glabrescens
                                            Balsamorhiza hispidula
                                                   [Balsamorhiza hookeri var. hispidula]
                                            Balsamorhiza hookeri
                                              Balsamorhiza hookeri var. hirsuta
                                                     [Balsamorhiza hirsuta]
                                              Balsamorhiza hookeri var. hookeri
                                              Balsamorhiza hookeri var. idahoensis
                                              Balsamorhiza hookeri var. lagocephala
                                                     [Balsamorhiza hirsuta var. lagocephala]
                                              Balsamorhiza hookeri var. lanata
                                              Balsamorhiza hookeri var. neglecta
                                                     [Balsamorhiza hirsuta var. neglecta]
                                              Balsamorhiza hookeri var. platylepis
                                            Balsamorhiza incana
                                            Balsamorhiza lanata
                                            Balsamorhiza macrolepis
                                              Balsamorhiza macrolepis var. macrolepis
                                              Balsamorhiza macrolepis var. platylepis
                                            Balsamorhiza macrophylla
                                              Balsamorhiza macrophylla var. idahoensis
                                            Balsamorhiza platylepis
                                            Balsamorhiza rosea
                                            Balsamorhiza sagittata
                                            Balsamorhiza sericea
                                            Balsamorhiza serrata
                                            Balsamorhiza x bonseri
                                            Balsamorhiza x terebinthacea
                                            Balsamorhiza x tomentosa
                                    Baltimora
                                            Baltimora geminata
                                            Baltimora recta
                                    Barkleyanthus
                                            Barkleyanthus salicifolius
                                                   [Cineraria salicifolia]
                                                   [Senecio salignus]
                                    Barnadesia
                                    Barroetea
                                            Barroetea laxiflora
                                            Barroetea sessilifolia
                                            Barroetea subuligera
                                              Barroetea subuligera var. latisquama
                                    Barrosoa
                                    Bartlettia
                                            Bartlettia scaposa
                                    Bartlettina
                                            Bartlettina oresbioides
                                            Bartlettina sordida
                                            Bartlettina tuerckheimii
                                    Bebbia
                                            Bebbia atriplicifolia
                                            Bebbia juncea
                                              Bebbia juncea var. aspera
                                              Bebbia juncea var. atriplicifolia
                                              Bebbia juncea var. juncea
                                    Bellis
                                            Bellis integrifolia
                                            Bellis mexicana
                                            Bellis perennis
                                            Bellis xanthocomoides
                                    Belloa
                                    Benitoa
                                            Benitoa occidentalis
                                    Berkheya
                                            Berkheya heterophylla
                                    Berlandiera
                                            Berlandiera dealbata
                                            Berlandiera lyrata
                                                   [Berlandiera incisa]
                                                   [Berlandiera lyrata var. macrophylla]
                                              Berlandiera lyrata var. monocephala
                                            Berlandiera monocephala
                                            Berlandiera pumila
                                              Berlandiera pumila var. pumila
                                              Berlandiera pumila var. scabrella
                                            Berlandiera subacaulis
                                            Berlandiera texana
                                                   [Berlandiera betonicifolia]
                                            Berlandiera tomentosa
                                              Berlandiera tomentosa var. dealbata
                                            Berlandiera x betonicifolia
                                            Berlandiera x humilis
                                                          Berlandiera x macrophylla
                                    Berthelotia
                                    Berylsimpsonia
                                            Berylsimpsonia crassinervis
                                            Berylsimpsonia vanillosma
                                    Bidens
                                            Bidens acrifolia
                                            Bidens aequisquama
                                            Bidens alba
                                              Bidens alba var. alba
                                              Bidens alba var. radiata
                                                     [Bidens pilosa var. radiata]
                                            Bidens amplectens
                                            Bidens amplissima
                                            Bidens angustissima
                                            Bidens anthemoides
                                            Bidens anthriscoides
                                              Bidens anthriscoides var. decomposita
                                            Bidens aristosa
                                                   [Bidens aristosa var. fritcheyi]
                                                   [Bidens aristosa var. mutica]
                                                   [Bidens aristosa var. retrorsa]
                                                   [Bidens involucrata]
                                                   [Bidens polylepis var. retrorsa]
                                            Bidens asplenioides
                                            Bidens asymmetrica
                                              Bidens asymmetrica var. subocculata
                                            Bidens aurea
                                                   [Bidens aurea var. wrightii]
                                                   [Bidens ferulaefolia]
                                                   [Bidens ferulifolia]
                                                   [Bidens heterophylla var. wrightii]
                                                   [Bidens heterophylla]
                                                   [Coreopsis aurea]
                                                   [Coreopsis ferulifolia]
                                            Bidens awaluana
                                            Bidens ballsii
                                            Bidens balsana
                                            Bidens beckii
                                            Bidens bidentoides
                                              Bidens bidentoides var. mariana
                                            Bidens bigelovii
                                              Bidens bigelovii var. angustiloba
                                              Bidens bigelovii var. bigelovii
                                            Bidens bipinnata
                                                   [Bidens bipinnata var. biternatoides]
                                              Bidens bipinnata var. cynapiifolia
                                            Bidens biternata
                                            Bidens campylotheca
                                              Bidens campylotheca ssp. campylotheca
                                              Bidens campylotheca ssp. pentamera
                                              Bidens campylotheca ssp. waihoiensis
                                              Bidens campylotheca var. pentamera
                                            Bidens caudatus
                                            Bidens cernua
                                                   [Bidens cernua var. cernua]
                                                   [Bidens cernua var. dentata]
                                                   [Bidens cernua var. elliptica]
                                                   [Bidens cernua var. integra]
                                                   [Bidens cernua var. minima]
                                                   [Bidens cernua var. oligodonta]
                                                   [Bidens cernua var. radiata]
                                                   [Bidens glaucescens]
                                              Bidens cernua var. elata
                                            Bidens cervicata
                                            Bidens chiapensis
                                            Bidens clarendonensis
                                            Bidens coartata
                                            Bidens comosa
                                                   [Bidens acuta]
                                                   [Bidens tripartita]
                                            Bidens conjuncta
                                            Bidens connata
                                              Bidens connata var. ambiversa
                                              Bidens connata var. anomala
                                              Bidens connata var. fallax
                                              Bidens connata var. gracilipes
                                              Bidens connata var. inundata
                                              Bidens connata var. petiolata
                                              Bidens connata var. pinnata
                                              Bidens connata var. submutica
                                            Bidens cornuta
                                            Bidens coronata
                                              Bidens coronata var. brachyodonta
                                              Bidens coronata var. tenuiloba
                                              Bidens coronata var. trichosperma
                                            Bidens cosmoides
                                              Bidens cosmoides var. refracta
                                            Bidens cronquistii
                                            Bidens ctenophylla
                                            Bidens cuneata
                                            Bidens cynapiifolia
                                              Bidens cynapiifolia var. portoricensis
                                              Bidens cynapiifolia var. tenuis
                                            Bidens degeneri
                                              Bidens degeneri var. apioides
                                            Bidens discoidea
                                            Bidens distans
                                            Bidens eatonii
                                              Bidens eatonii var. fallax
                                              Bidens eatonii var. illicita
                                              Bidens eatonii var. interstes
                                              Bidens eatonii var. kennebecensis
                                              Bidens eatonii var. major
                                              Bidens eatonii var. mutabilis
                                              Bidens eatonii var. simulans
                                            Bidens ekmanii
                                            Bidens elata
                                            Bidens fecunda
                                            Bidens ferax
                                            Bidens forbesii
                                              Bidens forbesii ssp. forbesii
                                              Bidens forbesii ssp. kahiliensis
                                            Bidens frondosa
                                                   [Bidens frondosa var. anomala]
                                                   [Bidens frondosa var. caudata]
                                                   [Bidens frondosa var. pallida]
                                                   [Bidens frondosa var. stenodonta]
                                              Bidens frondosa var. puberula
                                            Bidens fulvescens
                                            Bidens gardneri
                                            Bidens gentryi
                                            Bidens gracilis
                                            Bidens graciloides
                                            Bidens graveolens
                                            Bidens halawana
                                            Bidens hawaiensis
                                            Bidens heterodoxa
                                                   [Bidens heterodoxa var. agnostica]
                                                   [Bidens heterodoxa var. atheistica]
                                                   [Bidens heterodoxa var. monardifolia]
                                                   [Bidens heterodoxa var. orthodoxa]
                                                   [Bidens infirma]
                                                   [Bidens tripartita var. heterodoxa]
                                            Bidens heterosperma
                                            Bidens hillebrandiana
                                              Bidens hillebrandiana ssp. hillebrandiana
                                              Bidens hillebrandiana ssp. polycephala
                                            Bidens holwayi
                                            Bidens hyperborea
                                              Bidens hyperborea var. cathancensis
                                              Bidens hyperborea var. colpophila
                                              Bidens hyperborea var. hyperborea
                                              Bidens hyperborea var. laurentiana
                                              Bidens hyperborea var. svensonii
                                            Bidens inermis
                                            Bidens insolita
                                            Bidens kelloggii
                                            Bidens laevis
                                                   [Bidens elegans]
                                                   [Bidens nashii]
                                                   [Helianthus laevis]
                                            Bidens lemmonii
                                              Bidens lemmonii var. lemmonii
                                            Bidens leptocephala
                                            Bidens leucantha
                                            Bidens longistyla
                                            Bidens macrocarpa
                                              Bidens macrocarpa var. ovatifolia
                                            Bidens mariana
                                            Bidens mauiensis
                                              Bidens mauiensis var. ciliata
                                              Bidens mauiensis var. cuneatoides
                                              Bidens mauiensis var. forbesiana
                                              Bidens mauiensis var. lanaiensis
                                              Bidens mauiensis var. media
                                            Bidens menziesii
                                              Bidens menziesii ssp. filiformis
                                              Bidens menziesii ssp. menziesii
                                              Bidens menziesii var. filiformis
                                              Bidens menziesii var. lepida
                                              Bidens menziesii var. leptondontia
                                            Bidens mexicana
                                            Bidens micrantha
                                              Bidens micrantha ssp. ctenophylla
                                              Bidens micrantha ssp. kalealaha
                                              Bidens micrantha ssp. micrantha
                                              Bidens micrantha var. caduca
                                              Bidens micrantha var. kaalana
                                              Bidens micrantha var. laciniata
                                              Bidens micrantha var. rudimentifera
                                            Bidens mitis
                                              Bidens mitis var. leptophylla
                                            Bidens mollifolia
                                            Bidens molokaiensis
                                            Bidens muelleri
                                            Bidens napaliensis
                                            Bidens nematocera
                                            Bidens nudata
                                            Bidens obtusiloba
                                            Bidens ocellatus
                                            Bidens ostruthioides
                                            Bidens pentamera
                                            Bidens perversa
                                              Bidens perversa var. aquilonalis
                                            Bidens pilosa
                                                   [Bidens odorata var. calcicola]
                                                   [Bidens odorata]
                                                   [Bidens pilosa var. bimucronata]
                                                   [Bidens pilosa var. minor]
                                                   [Bidens pilosa var. pilosa]
                                              Bidens pilosa var. calcicola
                                            Bidens polylepis
                                            Bidens populifolia
                                            Bidens pringlei
                                            Bidens puberula
                                            Bidens pulchella
                                            Bidens refracta
                                            Bidens reptans
                                                   [Bidens brittonii]
                                              Bidens reptans var. reptans
                                              Bidens reptans var. urbanii
                                            Bidens riparia
                                              Bidens riparia var. refracta
                                            Bidens rosea
                                                   [Bidens odorata var. rosea]
                                              Bidens rosea var. aequisquama
                                            Bidens rostrata
                                            Bidens salicoides
                                            Bidens sambucifolia
                                            Bidens sandvicensis
                                              Bidens sandvicensis ssp. confusa
                                              Bidens sandvicensis ssp. sandvicensis
                                              Bidens sandvicensis var. antrorsa
                                              Bidens sandvicensis var. caduca
                                              Bidens sandvicensis var. imminuta
                                              Bidens sandvicensis var. leiocarpa
                                              Bidens sandvicensis var. setosa
                                            Bidens sarmentosa
                                            Bidens scandens
                                            Bidens seemannii
                                            Bidens segetum
                                            Bidens serrulata
                                            Bidens sharpii
                                            Bidens shrevei
                                            Bidens skottsbergii
                                              Bidens skottsbergii var. conglutinata
                                              Bidens skottsbergii var. pololuensis
                                            Bidens socorrensis
                                            Bidens squarrosa
                                            Bidens stokesii
                                            Bidens tenuisecta
                                            Bidens torta
                                            Bidens townsendii
                                            Bidens trichosperma
                                            Bidens triplinervia
                                            Bidens urbanii
                                            Bidens valida
                                            Bidens vulgata
                                              Bidens vulgata var. puberula
                                              Bidens vulgata var. schizantha
                                            Bidens waianensis
                                            Bidens waimeana
                                            Bidens wiebkei
                                            Bidens x dimidiata
                                            Bidens x magnidisca
                                            Bidens x micranthoides
                                            Bidens x multiceps
                                    Bigelovia
                                    Bigelowia
                                            Bigelowia albida
                                            Bigelowia brachylepis
                                            Bigelowia douglasii
                                              Bigelowia douglasii var. stenophylla
                                            Bigelowia graveolens
                                              Bigelowia graveolens var. hololeuca
                                            Bigelowia greenei
                                            Bigelowia howardii
                                              Bigelowia howardii var. attenuata
                                            Bigelowia juncea
                                            Bigelowia leiosperma
                                              Bigelowia leiosperma var. abbreviata
                                            Bigelowia nudata
                                              Bigelowia nudata ssp. australis
                                              Bigelowia nudata ssp. nudata
                                              Bigelowia nudata var. australis
                                              Bigelowia nudata var. nudata
                                            Bigelowia nuttallii
                                            Bigelowia paniculata
                                            Bigelowia parishii
                                            Bigelowia pyramidata
                                            Bigelowia rupestris
                                            Bigelowia spathulata
                                            Bigelowia vaseyi
                                            Bigelowia virgata
                                    Biolettia
                                            Biolettia riparia
                                    Bishopanthus
                                    Bishovia
                                    Blainvillea
                                            Blainvillea biaristata
                                    Blanchetia
                                            Blanchetia heterotricha
                                    Blennosperma
                                            Blennosperma bakeri
                                            Blennosperma californicum
                                            Blennosperma nanum
                                              Blennosperma nanum var. nanum
                                              Blennosperma nanum var. robustum
                                    Blepharipappus
                                            Blepharipappus bakeri
                                            Blepharipappus elegans
                                            Blepharipappus hieracioides
                                            Blepharipappus platyglossus
                                            Blepharipappus scaber
                                              Blepharipappus scaber ssp. laevis
                                              Blepharipappus scaber ssp. scaber
                                    Blepharizonia
                                            Blepharizonia laxa
                                            Blepharizonia plumosa
                                              Blepharizonia plumosa ssp. plumosa
                                              Blepharizonia plumosa ssp. viscida
                                    Blumea
                                            Blumea balsamifera
                                            Blumea lacera
                                            Blumea laciniata
                                            Blumea sessiliflora
                                            Blumea viscosa
                                                   [Conyza lyrata]
                                                   [Conyza viscosa]
                                                   [Eschenbachia lyrata]
                                    Boebera
                                    Boeberastrum
                                    Boeberoides
                                            Boeberoides grandiflora
                                    Bolanosa
                                            Bolanosa coulteri
                                    Bolophyta
                                    Boltonia
                                            Boltonia apalachicolensis
                                            Boltonia asteroides
                                              Boltonia asteroides var. asteroides
                                              Boltonia asteroides var. decurrens
                                              Boltonia asteroides var. glastifolia
                                              Boltonia asteroides var. latisquama
                                              Boltonia asteroides var. recognita
                                            Boltonia campestris
                                            Boltonia caroliniana
                                            Boltonia decurrens
                                            Boltonia diffusa
                                              Boltonia diffusa var. diffusa
                                              Boltonia diffusa var. interior
                                            Boltonia interior
                                            Boltonia latisquama
                                              Boltonia latisquama var. decurrens
                                              Boltonia latisquama var. microcephala
                                              Boltonia latisquama var. occidentalis
                                              Boltonia latisquama var. recognita
                                            Boltonia lautureana
                                            Boltonia ravenelii
                                            Boltonia recognita
                                    Bombycilaena
                                            Bombycilaena californica
                                              Bombycilaena californica var. subvestita
                                    Borrichia
                                            Borrichia arborescens
                                            Borrichia cubana
                                            Borrichia frutescens
                                            Borrichia x cubana
                                    Brachyactis
                                            Brachyactis angustus
                                            Brachyactis hybrida
                                    Brachychaeta
                                    Brachyclados
                                            Brachyclados caespitosus
                                    Brachycome
                                            Brachycome multifida
                                    Brachyris
                                            Brachyris californica
                                    Bracteantha
                                            Bracteantha bracteata
                                                   [Xeranthemum bracteatum]
                                    Bracyrhamphus
                                            Bracyrhamphus intybaceus
                                    Bradburia
                                            Bradburia hirtella
                                                   [Chrysopsis texana]
                                            Bradburia pilosa
                                                   [Chrysopsis pilosa]
                                    Brauneria
                                            Brauneria angustifolia
                                    Breea
                                    Brickellia
                                            Brickellia adenolepis
                                            Brickellia amplexicaulis
                                              Brickellia amplexicaulis var. amplexicaulis
                                              Brickellia amplexicaulis var. lanceolata
                                            Brickellia arguta
                                              Brickellia arguta var. arguta
                                              Brickellia arguta var. odontolepis
                                            Brickellia atractyloides
                                              Brickellia atractyloides var. arguta
                                              Brickellia atractyloides var. atractyloides
                                              Brickellia atractyloides var. odontolepis
                                            Brickellia baccharidea
                                            Brickellia betonicaefolia
                                            Brickellia betonicifolia
                                            Brickellia brachiata
                                            Brickellia brachyphylla
                                              Brickellia brachyphylla var. brachyphylla
                                              Brickellia brachyphylla var. hinckleyi
                                              Brickellia brachyphylla var. terlinguensis
                                            Brickellia californica
                                                   [Brickellia brandegei]
                                              Brickellia californica var. californica
                                                     [Bulbostylis californica]
                                              Brickellia californica var. jepsonii
                                            Brickellia cavanillesii
                                            Brickellia chenopodina
                                            Brickellia coahuilensis
                                            Brickellia conduplicata
                                            Brickellia cordifolia
                                            Brickellia corymbosa
                                            Brickellia coulteri
                                              Brickellia coulteri var. adenopoda
                                              Brickellia coulteri var. brachiata
                                              Brickellia coulteri var. coulteri
                                              Brickellia coulteri var. megalodonta
                                            Brickellia cuspidata
                                            Brickellia cylindracea
                                            Brickellia cymulifera
                                            Brickellia dentata
                                            Brickellia desertorum
                                                   [Brickellia californica var. desertorum]
                                                   [Coleosanthus desertorum]
                                            Brickellia diffusa
                                            Brickellia enigmatica
                                            Brickellia eupatorioides
                                              Brickellia eupatorioides var. chlorolepis
                                                     [Brickellia chlorolepis]
                                                     [Brickellia leptophylla var. mexicana]
                                                     [Brickellia rosemarinifolia var. chlorolepis]
                                                     [Brickellia rosmarinifolia ssp. chlorolepis]
                                                     [Brickellia shaffneri]
                                                     [Kuhnia chlorolepis]
                                                     [Kuhnia eupatorioides var. chlorolepis]
                                                     [Kuhnia gooddingii]
                                                     [Kuhnia leptophylla var. mexicana]
                                                     [Kuhnia microphylla]
                                                     [Kuhnia rosemarinifolia var. chlorolepis]
                                                     [Kuhnia rosmarinifolia var. chlorolepis]
                                                     [Kuhnia shaffneri]
                                              Brickellia eupatorioides var. corymbulosa
                                              Brickellia eupatorioides var. eupatorioides
                                              Brickellia eupatorioides var. floridana
                                              Brickellia eupatorioides var. gracillima
                                              Brickellia eupatorioides var. ozarkana
                                              Brickellia eupatorioides var. texana
                                            Brickellia filipes
                                            Brickellia floribunda
                                            Brickellia frutescens
                                            Brickellia glabrata
                                            Brickellia glandulosa
                                            Brickellia glomerata
                                            Brickellia glutinosa
                                            Brickellia grandiflora
                                                   [Brickellia grandiflora var. petiolaris]
                                                   [Coleosanthus grandiflorus]
                                            Brickellia greenei
                                            Brickellia guatemalensis
                                            Brickellia hartwegi
                                            Brickellia hastata
                                            Brickellia hebecarpa
                                            Brickellia hinckleyi
                                              Brickellia hinckleyi var. hinckleyi
                                              Brickellia hinckleyi var. terlinguensis
                                            Brickellia hintoniorum
                                            Brickellia hymenochlaena
                                            Brickellia incana
                                            Brickellia jaliscensis
                                            Brickellia knappiana
                                            Brickellia laciniata
                                            Brickellia lanata
                                            Brickellia laxiflora
                                            Brickellia lemmonii
                                              Brickellia lemmonii var. conduplicata
                                              Brickellia lemmonii var. lemmonii
                                                     [Brickellia viejensis]
                                              Brickellia lemmonii var. nelsonii
                                              Brickellia lemmonii var. wootonii
                                            Brickellia leptophylla
                                            Brickellia lewisii
                                            Brickellia longifolia
                                              Brickellia longifolia var. longifolia
                                              Brickellia longifolia var. multiflora
                                                     [Brickellia multiflora]
                                            Brickellia macromera
                                            Brickellia megalodonta
                                            Brickellia megaphylla
                                            Brickellia microphylla
                                              Brickellia microphylla var. microphylla
                                              Brickellia microphylla var. scabra
                                                     [Brickellia microphylla ssp. scabra]
                                                     [Brickellia scabra]
                                              Brickellia microphylla var. watsonii
                                                     [Brickellia watsonii]
                                            Brickellia mohavensis
                                            Brickellia monocephala
                                            Brickellia mosieri
                                            Brickellia nelsonii
                                            Brickellia nesomii
                                            Brickellia nevinii
                                            Brickellia nutans
                                            Brickellia nutanticeps
                                            Brickellia oblongifolia
                                              Brickellia oblongifolia var. abbreviata
                                              Brickellia oblongifolia var. linifolia
                                                     [Brickellia linifolia]
                                              Brickellia oblongifolia var. oblongifolia
                                              Brickellia oblongifolia var. typica
                                            Brickellia odontophylla
                                            Brickellia oliganthes
                                            Brickellia oreithales
                                            Brickellia orizabensis
                                            Brickellia pacayensis
                                            Brickellia palmeri
                                            Brickellia paniculata
                                            Brickellia parvula
                                            Brickellia pavonii
                                            Brickellia pedunculosa
                                            Brickellia pendula
                                            Brickellia peninsularis
                                            Brickellia petrophila
                                            Brickellia pringlei
                                            Brickellia problematica
                                            Brickellia pulcherrima
                                            Brickellia reniformis
                                            Brickellia rhomboidea
                                            Brickellia rosemarinifolia
                                            Brickellia rosmarinifolia
                                            Brickellia rusbyi
                                            Brickellia saltillensis
                                            Brickellia scaber
                                            Brickellia scoparia
                                            Brickellia secundiflora
                                              Brickellia secundiflora var. monticola
                                            Brickellia simplex
                                            Brickellia solidaginifolia
                                            Brickellia sonorana
                                                   [Barroetea sonorana]
                                            Brickellia spinulosa
                                              Brickellia spinulosa var. asperata
                                            Brickellia squarrosa
                                              Brickellia squarrosa var. oligadena
                                            Brickellia subuligera
                                            Brickellia tenera
                                            Brickellia thyrsiflora
                                            Brickellia tomentella
                                            Brickellia urolepis
                                            Brickellia venosa
                                                   [Coleosanthus venosus]
                                            Brickellia verbenacea
                                            Brickellia vernicosa
                                            Brickellia veronicaefolia
                                            Brickellia veronicifolia
                                              Brickellia veronicifolia var. petrophila
                                              Brickellia veronicifolia var. veronicifolia
                                            Brickellia wislizeni
                                              Brickellia wislizeni var. lanceolata
                                            Brickellia wrightii
                                    Brickelliastrum
                                            Brickelliastrum fendleri
                                                   [Brickellia fendleri]
                                                   [Eupatorium fendleri]
                                    Brintonia
                                            Brintonia discoidea
                                    Buphthalmum
                                            Buphthalmum arborescens
                                            Buphthalmum salicifolium
                                    Burrielia
                                            Burrielia chrysostoma
                                              Burrielia chrysostoma var. macrantha
                                            Burrielia gracilis
                                            Burrielia microglossa
                                            Burrielia nivea
                                            Burrielia parviflora
                                            Burrielia platycarpha
                                            Burrielia tenerrima
                                    Cacalia
                                            Cacalia auriculata
                                              Cacalia auriculata ssp. kamtschatica
                                            Cacalia coccinea
                                            Cacalia cordifolia
                                            Cacalia diversifolia
                                            Cacalia floridana
                                            Cacalia kamtschatica
                                            Cacalia michoacana
                                            Cacalia muehlenbergii
                                            Cacalia porophyllum
                                            Cacalia rugelia
                                            Cacalia sonchifolia
                                            Cacalia suaveolens
                                            Cacalia sulcata
                                    Cacaliopsis
                                            Cacaliopsis nardosmia
                                                   [Cacalia nardosmia var. glabrata]
                                                   [Cacalia nardosmia]
                                                   [Cacaliopsis nardosmia var. glabrata]
                                                   [Luina nardosmia var. glabrata]
                                                   [Luina nardosmia]
                                    Cacosmia
                                    Caenotus
                                            Caenotus canadensis
                                    Calais
                                            Calais bigelovii
                                            Calais bolanderi
                                            Calais cyclocarpha
                                            Calais kelloggii
                                            Calais linearifolia
                                            Calais macrochaeta
                                            Calais nutans
                                              Calais nutans var. latifolia
                                            Calais parryi
                                            Calais platycarpha
                                            Calais tenella
                                    Calea
                                           [Tournonia]
                                            Calea acaulis
                                            Calea angusta
                                            Calea aspera
                                            Calea clausseniana
                                            Calea cuneifolia
                                            Calea cymosa
                                            Calea gardneriana
                                            Calea hymenolepis
                                            Calea hypoleuca
                                            Calea ilienii
                                            Calea integrifolia
                                            Calea intermedia
                                            Calea jamaicensis
                                            Calea lantanoides
                                            Calea longifolia
                                            Calea longipedicellata
                                            Calea multijuga
                                            Calea nervosa
                                            Calea nitida
                                            Calea oppositifolia
                                            Calea palmeri
                                            Calea parvifolia
                                            Calea peckii
                                            Calea pinnatifida
                                            Calea polycephala
                                            Calea pringlei
                                            Calea quadrifolia
                                            Calea reticulata
                                            Calea rupicola
                                            Calea scabra
                                            Calea ternifolia
                                            Calea teucriifolia
                                            Calea tomentosa
                                            Calea trichotoma
                                            Calea uniflora
                                            Calea urticifolia
                                            Calea zacatechichi
                                    Calendula
                                            Calendula aegyptiaca
                                            Calendula arvensis
                                            Calendula officinalis
                                                   [Calendula officinalis var. prolifera]
                                    Calhounia
                                            Calhounia nelsonae
                                    Callicephalus
                                            Callicephalus nitens
                                    Callichroa
                                            Callichroa nutans
                                    Calliopsis
                                    Callistephus
                                            Callistephus chinensis
                                    Calocephalus
                                            Calocephalus brownii
                                    Calotis
                                            Calotis cuneifolia
                                    Calycadenia
                                            Calycadenia bicolor
                                            Calycadenia campestris
                                            Calycadenia cephalotes
                                            Calycadenia ciliosa
                                            Calycadenia elegans
                                            Calycadenia fremontii
                                            Calycadenia hispida
                                              Calycadenia hispida ssp. reducta
                                            Calycadenia hooveri
                                            Calycadenia micrantha
                                            Calycadenia mollis
                                            Calycadenia multiglandulosa
                                              Calycadenia multiglandulosa ssp. bicolor
                                              Calycadenia multiglandulosa ssp. cephalotes
                                              Calycadenia multiglandulosa ssp. robusta
                                            Calycadenia oppositifolia
                                            Calycadenia pauciflora
                                              Calycadenia pauciflora var. elegans
                                            Calycadenia plumosa
                                            Calycadenia ramulosa
                                            Calycadenia scabrella
                                            Calycadenia spicata
                                            Calycadenia truncata
                                              Calycadenia truncata ssp. microcephala
                                              Calycadenia truncata ssp. scabrella
                                              Calycadenia truncata ssp. truncata
                                              Calycadenia truncata var. scabrella
                                            Calycadenia villosa
                                    Calycoseris
                                            Calycoseris parryi
                                            Calycoseris wrightii
                                              Calycoseris wrightii var. californica
                                    Calydermos
                                    Calymmandra
                                            Calymmandra candida
                                    Calyptocarpus
                                            Calyptocarpus vialis
                                                   [Synedrella vialis]
                                                   [Synedrellopsis grisebachii]
                                            Calyptocarpus wendlandii
                                    Campovassouria
                                            Campovassouria bupleurifolia
                                    Campuloclinium
                                            Campuloclinium macrocephalum
                                    Canadanthus
                                            Canadanthus modestus
                                    Carduus
                                            Carduus acanthoides
                                              Carduus acanthoides ssp. acanthoides
                                            Carduus acuatus
                                            Carduus araneosus
                                            Carduus bernardinus
                                            Carduus callilepis
                                            Carduus candidissimus
                                            Carduus carolinianus
                                            Carduus centaureae
                                            Carduus crispus
                                            Carduus discolor
                                            Carduus erosus
                                            Carduus floccosus
                                            Carduus griseus
                                            Carduus helenioides
                                            Carduus helenoides
                                            Carduus lacerus
                                            Carduus laterifolius
                                            Carduus lecontei
                                            Carduus macounii
                                            Carduus maritima
                                            Carduus maritimus
                                            Carduus modestus
                                            Carduus nevadensis
                                            Carduus nutans
                                                   [Carduus macrocephalus]
                                                   [Carduus macrolepis]
                                                   [Carduus nutans ssp. leiophyllus]
                                                   [Carduus nutans ssp. macrocephalus]
                                                   [Carduus nutans ssp. macrolepis]
                                                   [Carduus nutans ssp. nutans]
                                                   [Carduus nutans var. leiophyllus]
                                                   [Carduus nutans var. macrocephalus]
                                                   [Carduus nutans var. vestitus]
                                            Carduus nuttallii
                                            Carduus oblanceolatus
                                            Carduus olivescens
                                            Carduus oreophilus
                                            Carduus osterhoutii
                                            Carduus perennans
                                            Carduus perplexans
                                            Carduus pinetorum
                                            Carduus pycnocephalus
                                              Carduus pycnocephalus ssp. pycnocephalus
                                            Carduus radicans
                                            Carduus repandus
                                            Carduus smallii
                                            Carduus spathulatus
                                            Carduus spinosissimus
                                            Carduus tenuiflorus
                                            Carduus vernalis
                                            Carduus vinaceus
                                            Carduus virginianus
                                            Carduus x orthocephalus
                                    Carlina
                                            Carlina vulgaris
                                              Carlina vulgaris ssp. longifolia
                                              Carlina vulgaris ssp. vulgaris
                                    Carlquistia
                                            Carlquistia muirii
                                    Carminatia
                                            Carminatia anomala
                                            Carminatia recondita
                                            Carminatia tenuiflora
                                    Carphephorus
                                            Carphephorus bellidifolius
                                            Carphephorus carnosus
                                            Carphephorus corymbosus
                                            Carphephorus odoratissimus
                                              Carphephorus odoratissimus var. odoratissimus
                                              Carphephorus odoratissimus var. subtropicanus
                                            Carphephorus paniculatus
                                            Carphephorus pseudoliatris
                                            Carphephorus tomentosus
                                              Carphephorus tomentosus var. walteri
                                    Carphochaete
                                            Carphochaete bigelovii
                                            Carphochaete grahami
                                            Carphochaete pringlei
                                              Carphochaete pringlei var. pringlei
                                              Carphochaete pringlei var. simulans
                                            Carphochaete wislizeni
                                            Carphochaete wislizenii
                                    Carpochaete
                                            Carpochaete bigelovii
                                    Carterothamnus
                                            Carterothamnus anomalochaeta
                                    Carthamus
                                            Carthamus baeticus
                                            Carthamus creticus
                                            Carthamus laevis
                                            Carthamus lanatus
                                              Carthamus lanatus ssp. baeticus
                                              Carthamus lanatus ssp. creticus
                                              Carthamus lanatus ssp. lanatus
                                            Carthamus leucocaulos
                                            Carthamus oxyacantha
                                            Carthamus oxyacanthus
                                            Carthamus tinctorius
                                    Castalis
                                            Castalis tragus
                                                   [Dimorphotheca aurantiaca]
                                    Catananche
                                            Catananche caerulea
                                            Catananche lutea
                                    Celmisia
                                            Celmisia spectabilis
                                    Centaurea
                                            Centaurea americana
                                            Centaurea aspera
                                            Centaurea austriaca
                                            Centaurea babylonica
                                            Centaurea benedicta
                                                   [Cnicus benedictus]
                                            Centaurea besseriana
                                            Centaurea biebersteinii
                                                   [Acosta maculosa]
                                                   [Centaurea maculosa]
                                            Centaurea bovina
                                            Centaurea calcitrapa
                                            Centaurea calcitrapoides
                                            Centaurea candidissima
                                            Centaurea carduiformis
                                            Centaurea chilensis
                                            Centaurea cineraria
                                            Centaurea cyanus
                                                   [Leucacantha cyanus]
                                            Centaurea dealbata
                                            Centaurea debeauxii
                                              Centaurea debeauxii ssp. thuillieri
                                            Centaurea depressa
                                            Centaurea diffusa
                                                   [Acosta diffusa]
                                            Centaurea diluta
                                            Centaurea dubia
                                              Centaurea dubia ssp. vochinensis
                                            Centaurea eriophora
                                            Centaurea erivanensis
                                            Centaurea iberica
                                            Centaurea jacea
                                            Centaurea macrocephala
                                            Centaurea melitensis
                                            Centaurea montana
                                                   [Centaurea montana var. alba]
                                            Centaurea muricata
                                            Centaurea nervosa
                                            Centaurea nigra
                                              Centaurea nigra var. radiata
                                            Centaurea nigrescens
                                            Centaurea orientalis
                                            Centaurea ornata
                                            Centaurea ovina
                                              Centaurea ovina ssp. besseriana
                                            Centaurea paniculata
                                            Centaurea phrygia
                                            Centaurea pratensis
                                            Centaurea ragusina
                                            Centaurea rothrockii
                                            Centaurea scabiosa
                                              Centaurea scabiosa var. vertesensis
                                            Centaurea solstitialis
                                                   [Leucantha solstitialis]
                                            Centaurea squarrosa
                                            Centaurea stoebe
                                              Centaurea stoebe ssp. micranthos
                                            Centaurea sulphurea
                                            Centaurea transalpina
                                            Centaurea trichocephala
                                            Centaurea triumfettii
                                            Centaurea uniflora
                                              Centaurea uniflora ssp. nervosa
                                            Centaurea ustulata
                                            Centaurea variegata
                                            Centaurea verutum
                                            Centaurea virgata
                                              Centaurea virgata ssp. squarrosa
                                              Centaurea virgata var. squarrosa
                                            Centaurea vochinensis
                                            Centaurea x moncktonii
                                            Centaurea x pouzinii
                                            Centaurea x psammogena
                                    Centipeda
                                            Centipeda minima
                                    Centratherum
                                            Centratherum camporum
                                            Centratherum muticum
                                            Centratherum punctatum
                                    Centroclinium
                                    Centromadia
                                            Centromadia fitchii
                                            Centromadia parryi
                                              Centromadia parryi ssp. australis
                                                     [Hemizonia australis]
                                                     [Hemizonia parryi ssp. australis]
                                              Centromadia parryi ssp. congdonii
                                              Centromadia parryi ssp. parryi
                                                     [Hemizonia parryi ssp. congdonii]
                                                     [Hemizonia parryi ssp. parryi]
                                                     [Hemizonia parryi ssp. rudis]
                                                     [Hemizonia parryi]
                                              Centromadia parryi ssp. rudis
                                            Centromadia pungens
                                              Centromadia pungens ssp. laevis
                                              Centromadia pungens ssp. maritima
                                              Centromadia pungens ssp. pungens
                                              Centromadia pungens ssp. septentrionalis
                                    Cephalophora
                                    Cephaloseris
                                    Chabraea
                                    Chaenactis
                                            Chaenactis alpigena
                                            Chaenactis artemisiaefolia
                                            Chaenactis artemisiifolia
                                            Chaenactis attenuata
                                            Chaenactis aurea
                                            Chaenactis carphoclinia
                                              Chaenactis carphoclinia var. carphoclinia
                                                     [Chaenactis carphoclinia var. attenuata]
                                              Chaenactis carphoclinia var. peirsonii
                                            Chaenactis cusickii
                                            Chaenactis douglasii
                                              Chaenactis douglasii var. alpina
                                                     [Chaenactis alpina var. leucopsis]
                                                     [Chaenactis alpina var. rubella]
                                                     [Chaenactis alpina]
                                                     [Chaenactis leucopsis]
                                                     [Chaenactis minuscula]
                                              Chaenactis douglasii var. douglasii
                                                     [Chaenactis angustifolia]
                                                     [Chaenactis brachiata var. stansburiana]
                                                     [Chaenactis brachiata]
                                                     [Chaenactis cineria]
                                                     [Chaenactis douglasii var. achilleifolia]
                                                     [Chaenactis douglasii var. glandulosa]
                                                     [Chaenactis douglasii var. montana]
                                                     [Chaenactis douglasii var. nana]
                                                     [Chaenactis douglasii var. rubricaulis]
                                                     [Chaenactis douglasii var. typicus]
                                                     [Chaenactis humilis]
                                                     [Chaenactis panamintensis]
                                                     [Chaenactis ramosa]
                                                     [Chaenactis rubricaulis]
                                                     [Chaenactis suksdorfii]
                                            Chaenactis evermannii
                                            Chaenactis fremonti
                                            Chaenactis fremontii
                                            Chaenactis furcata
                                            Chaenactis glabriuscula
                                              Chaenactis glabriuscula var. aurea
                                              Chaenactis glabriuscula var. curta
                                              Chaenactis glabriuscula var. denudata
                                              Chaenactis glabriuscula var. glabriuscula
                                              Chaenactis glabriuscula var. gracilenta
                                              Chaenactis glabriuscula var. heterocarpha
                                              Chaenactis glabriuscula var. lanosa
                                              Chaenactis glabriuscula var. megacephala
                                              Chaenactis glabriuscula var. orcuttiana
                                              Chaenactis glabriuscula var. tenuifolia
                                            Chaenactis heterocarpha
                                            Chaenactis lacera
                                            Chaenactis lanosa
                                            Chaenactis macrantha
                                            Chaenactis nevadensis
                                              Chaenactis nevadensis var. mainsiana
                                            Chaenactis nevii
                                            Chaenactis orcuttiana
                                            Chaenactis parishii
                                            Chaenactis pedicularia
                                            Chaenactis pumila
                                            Chaenactis santolinoides
                                              Chaenactis santolinoides var. indurata
                                            Chaenactis stevioides
                                                   [Chaenactis gillespiei]
                                                   [Chaenactis latifolia]
                                                   [Chaenactis mexicana]
                                                   [Chaenactis stevioides var. brachypappa]
                                                   [Chaenactis stevioides var. thornberi]
                                              Chaenactis stevioides var. stevioides
                                            Chaenactis suffrutescens
                                              Chaenactis suffrutescens var. incana
                                            Chaenactis tanacetifolia
                                              Chaenactis tanacetifolia var. gracilenta
                                            Chaenactis tenuifolia
                                              Chaenactis tenuifolia var. orcuttiana
                                            Chaenactis thompsonii
                                            Chaenactis xantiana
                                    Chaetadelpha
                                            Chaetadelpha wheeleri
                                    Chaetanthera
                                            Chaetanthera chilensis
                                            Chaetanthera elegans
                                            Chaetanthera glabrata
                                    Chaetopappa
                                            Chaetopappa alsinoides
                                            Chaetopappa asteroides
                                              Chaetopappa asteroides var. asteroides
                                              Chaetopappa asteroides var. grandis
                                              Chaetopappa asteroides var. imberbis
                                            Chaetopappa aurea
                                            Chaetopappa bellidiflora
                                            Chaetopappa bellidifolia
                                            Chaetopappa bellioides
                                              Chaetopappa bellioides var. hirticaulis
                                            Chaetopappa effusa
                                            Chaetopappa ericoides
                                                   [Aster arenosus]
                                                   [Aster ericaefolius]
                                                   [Aster hirtifolius]
                                                   [Aster leucelene]
                                                   [Inula ericoides]
                                                   [Leucelene ericoides]
                                            Chaetopappa exilis
                                            Chaetopappa fragilis
                                            Chaetopappa hersheyi
                                            Chaetopappa imberbis
                                            Chaetopappa lyonii
                                            Chaetopappa parryi
                                            Chaetopappa pulchella
                                    Chaetospira
                                    Chaetymenia
                                            Chaetymenia peduncularis
                                    Chamaechaenactis
                                            Chamaechaenactis scaposa
                                              Chamaechaenactis scaposa var. parva
                                              Chamaechaenactis scaposa var. scaposa
                                                     [Chaenactis scaposa]
                                    Chamaemelum
                                            Chamaemelum fuscatum
                                            Chamaemelum mixtum
                                            Chamaemelum nobile
                                                   [Anthemis nobilis]
                                    Chaptalia
                                            Chaptalia albicans
                                            Chaptalia angustata
                                            Chaptalia comptonioides
                                            Chaptalia confinis
                                            Chaptalia crispata
                                            Chaptalia dentata
                                            Chaptalia eggersii
                                            Chaptalia ekmanii
                                            Chaptalia estribensis
                                            Chaptalia fallax
                                            Chaptalia integerrima
                                            Chaptalia madrensis
                                            Chaptalia media
                                            Chaptalia membranacea
                                            Chaptalia montana
                                            Chaptalia mornicola
                                            Chaptalia nutans
                                            Chaptalia obovata
                                            Chaptalia pringlei
                                            Chaptalia pumila
                                            Chaptalia rocana
                                            Chaptalia runcinata
                                            Chaptalia shaferi
                                            Chaptalia sinuata
                                            Chaptalia sonchifolia
                                            Chaptalia spathulata
                                            Chaptalia stenocephala
                                            Chaptalia texana
                                                   [Chaptalia nutans var. texana]
                                            Chaptalia tomentosa
                                            Chaptalia vegaensis
                                    Charadranaetes
                                    Chardinia
                                            Chardinia macrocarpa
                                    Chersodoma
                                    Chevreulia
                                    Chiliophyllum
                                            Chiliophyllum densifolium
                                    Chiliotrichum
                                            Chiliotrichum diffusum
                                            Chiliotrichum rosmarinifolium
                                    Chionolaena
                                    Chionopappus
                                    Chloracantha
                                            Chloracantha spinosa
                                                   [Aster spinosus]
                                                   [Erigeron ortegae]
                                                   [Erigeron spinosus]
                                                   [Leucosyris spinosa]
                                              Chloracantha spinosa var. jaliscensis
                                              Chloracantha spinosa var. spinosa
                                              Chloracantha spinosa var. spinosissima
                                    Chlorocrepis
                                            Chlorocrepis tristis
                                              Chlorocrepis tristis ssp. gracilis
                                    Chondrilla
                                            Chondrilla juncea
                                    Chondrophora
                                            Chondrophora nudata
                                            Chondrophora virgata
                                    Chorisiva
                                            Chorisiva nevadensis
                                                   [Iva nevadensis]
                                    Chresta
                                            Chresta angustifolia
                                            Chresta exsucca
                                            Chresta harleyi
                                            Chresta pycnocephala
                                            Chresta scapigera
                                            Chresta speciosa
                                            Chresta sphaerocephala
                                    Chromolaena
                                            Chromolaena bahamensis
                                            Chromolaena bigelovii
                                                   [Eupatorium bigelovii]
                                            Chromolaena borinquensis
                                            Chromolaena callilepis
                                            Chromolaena chaseae
                                            Chromolaena christieana
                                            Chromolaena collina
                                            Chromolaena corymbosa
                                            Chromolaena dussii
                                            Chromolaena frustrata
                                            Chromolaena geraniifolia
                                            Chromolaena heteroclinia
                                            Chromolaena hirsuta
                                            Chromolaena horminoides
                                            Chromolaena integrifolia
                                            Chromolaena ivifolia
                                                   [Eupatorium ivifolium]
                                                   [Osmia ivifolia]
                                            Chromolaena kleinii
                                            Chromolaena leucocephala
                                            Chromolaena lucayana
                                            Chromolaena macrantha
                                            Chromolaena macrodon
                                            Chromolaena odorata
                                                   [Osmia odorata]
                                            Chromolaena ossaeana
                                            Chromolaena oteroi
                                            Chromolaena ovaliflora
                                                   [Eupatorium ovaliflorum]
                                            Chromolaena pedunculosa
                                            Chromolaena pulchella
                                            Chromolaena sagittata
                                                   [Eupatorium sagittatum]
                                              Chromolaena sagittata var. sagittata
                                            Chromolaena sinuata
                                            Chromolaena trigonocarpa
                                            Chromolaena verbenacea
                                    Chromolepis
                                            Chromolepis heterophylla
                                    Chrysactinia
                                            Chrysactinia acerosa
                                            Chrysactinia lehtoae
                                            Chrysactinia mexicana
                                            Chrysactinia pinnata
                                            Chrysactinia truncata
                                    Chrysactinium
                                    Chrysanthellum
                                            Chrysanthellum americanum
                                            Chrysanthellum indicum
                                              Chrysanthellum indicum var. mexicanum
                                            Chrysanthellum integrifolium
                                            Chrysanthellum involutum
                                            Chrysanthellum keilii
                                            Chrysanthellum mexicanum
                                            Chrysanthellum michoacanum
                                    Chrysanthemoides
                                            Chrysanthemoides monilifera
                                    Chrysanthemum
                                            Chrysanthemum anethifolium
                                            Chrysanthemum arcticum
                                              Chrysanthemum arcticum ssp. polare
                                              Chrysanthemum arcticum var. polare
                                            Chrysanthemum bipinnatum
                                              Chrysanthemum bipinnatum ssp. huronense
                                            Chrysanthemum cinerariifolium
                                            Chrysanthemum coccineum
                                            Chrysanthemum corymbosum
                                            Chrysanthemum integrifolium
                                            Chrysanthemum lacustre
                                            Chrysanthemum majus
                                            Chrysanthemum maximum
                                            Chrysanthemum morifolium
                                            Chrysanthemum nipponicum
                                            Chrysanthemum pacificum
                                            Chrysanthemum parthenium
                                            Chrysanthemum roseum
                                            Chrysanthemum x morifolium
                                                   [Dendranthema grandiflorum]
                                                   [Dendranthema x grandiflorum]
                                            Chrysanthemum x superbum
                                    Chrysocoma
                                            Chrysocoma graminifolia
                                            Chrysocoma nudata
                                    Chrysogonum
                                            Chrysogonum australe
                                            Chrysogonum virginianum
                                              Chrysogonum virginianum var. australe
                                              Chrysogonum virginianum var. brevistolon
                                              Chrysogonum virginianum var. dentatum
                                              Chrysogonum virginianum var. virginianum
                                    Chrysolaena
                                            Chrysolaena oligophylla
                                            Chrysolaena platensis
                                            Chrysolaena verbascifolia
                                    Chrysoma
                                            Chrysoma fasciculata
                                            Chrysoma pauciflosculosa
                                            Chrysoma solidaginoides
                                    Chrysopis
                                            Chrysopis latisquamea
                                    Chrysopsis
                                            Chrysopsis adenolepis
                                            Chrysopsis alpicola
                                              Chrysopsis alpicola var. glomerata
                                            Chrysopsis alpina
                                            Chrysopsis angustifolia
                                                   [Chrysopsis villosa var. angustifolia]
                                            Chrysopsis arenaria
                                            Chrysopsis aspera
                                            Chrysopsis asprella
                                            Chrysopsis ballardii
                                            Chrysopsis barbata
                                            Chrysopsis bolanderi
                                                   [Chrysopsis villosa var. bolanderi]
                                            Chrysopsis breweri
                                              Chrysopsis breweri var. multibracteata
                                            Chrysopsis californica
                                            Chrysopsis camphorata
                                                   [Chrysopsis villosa var. camphorata]
                                            Chrysopsis compacta
                                            Chrysopsis cooperi
                                            Chrysopsis cruiseana
                                            Chrysopsis delaneyi
                                            Chrysopsis depressa
                                            Chrysopsis echioides
                                                   [Chrysopsis villosa var. echioides]
                                            Chrysopsis elata
                                            Chrysopsis falcata
                                            Chrysopsis fastigiata
                                                   [Chrysopsis villosa var. fastigiata]
                                            Chrysopsis flexuosa
                                            Chrysopsis floridana
                                            Chrysopsis gigantea
                                            Chrysopsis godfreyi
                                            Chrysopsis gossypina
                                              Chrysopsis gossypina ssp. cruiseana
                                              Chrysopsis gossypina ssp. gossypina
                                                     [Chrysopsis arenicola]
                                                     [Chrysopsis decumbens]
                                                     [Chrysopsis longii]
                                                     [Chrysopsis trichophylla]
                                                     [Heterotheca gossypina]
                                                     [Heterotheca trichophylla]
                                                     [Inula gossypina]
                                              Chrysopsis gossypina ssp. hyssopifolia
                                            Chrysopsis gracilis
                                            Chrysopsis graminifolia
                                              Chrysopsis graminifolia var. aspera
                                              Chrysopsis graminifolia var. latifolia
                                              Chrysopsis graminifolia var. microcephala
                                            Chrysopsis highlandsensis
                                            Chrysopsis hyssopifolia
                                            Chrysopsis jonesii
                                            Chrysopsis lanuginosa
                                            Chrysopsis latisquamea
                                            Chrysopsis linearifolia
                                              Chrysopsis linearifolia ssp. dressii
                                              Chrysopsis linearifolia ssp. linearifolia
                                            Chrysopsis mariana
                                              Chrysopsis mariana var. floridana
                                              Chrysopsis mariana var. macradenia
                                            Chrysopsis microcephala
                                            Chrysopsis mixta
                                            Chrysopsis nervosa
                                            Chrysopsis nivea
                                            Chrysopsis oligantha
                                            Chrysopsis oregona
                                              Chrysopsis oregona var. compacta
                                              Chrysopsis oregona var. rudis
                                              Chrysopsis oregona var. scaberrima
                                            Chrysopsis pinifolia
                                            Chrysopsis pumila
                                            Chrysopsis ruthii
                                            Chrysopsis scabrella
                                            Chrysopsis scabrifolia
                                            Chrysopsis sessiliflora
                                                   [Chrysopsis villosa var. sessiliflora]
                                            Chrysopsis shastensis
                                            Chrysopsis stenophylla
                                                   [Chrysopsis hispida var. stenophylla]
                                                   [Chrysopsis villosa var. stenophylla]
                                            Chrysopsis subulata
                                            Chrysopsis tracyi
                                            Chrysopsis wrightii
                                    Chrysothamnus
                                            Chrysothamnus affinis
                                            Chrysothamnus angustus
                                            Chrysothamnus bakeri
                                            Chrysothamnus bolanderi
                                                   [Chrysothamnus nauseosus ssp. bolanderi]
                                            Chrysothamnus confinis
                                            Chrysothamnus corymbosus
                                            Chrysothamnus depressus
                                                   [Ericameria depressa]
                                            Chrysothamnus eremobius
                                            Chrysothamnus filifolius
                                            Chrysothamnus gramineus
                                                   [Ericameria graminea]
                                                   [Petradoria discoidea]
                                            Chrysothamnus greenei
                                                   [Chrysothamnus greenei ssp. filifolius]
                                                   [Chrysothamnus greenei var. filifolius]
                                                   [Ericameria filifolia]
                                            Chrysothamnus humilis
                                                   [Chrysothamnus viscidiflorus ssp. humilis]
                                                   [Chrysothamnus viscidiflorus var. humilis]
                                                   [Ericameria humilis]
                                            Chrysothamnus marianus
                                            Chrysothamnus molestus
                                                   [Chrysothamnus viscidiflorus var. molestus]
                                                   [Ericameria molesta]
                                              Chrysothamnus nauseosus var. bernardinus
                                            Chrysothamnus newberryi
                                            Chrysothamnus nivecaulis
                                            Chrysothamnus patens
                                            Chrysothamnus pulchellus
                                                   [Chrysothamnus pulchellus ssp. elatior]
                                                   [Ericameria pulchella var. elatior]
                                                   [Ericameria pulchella]
                                            Chrysothamnus scoparius
                                            Chrysothamnus scopulorum
                                                   [Hesperodoria scopulorum]
                                            Chrysothamnus spathulatus
                                                   [Chrysothamnus viscidiflorus var. ludens]
                                                   [Ericameria spathulata]
                                            Chrysothamnus stylosus
                                                   [Grindelia stylosa]
                                                   [Vanclevea stylosa]
                                            Chrysothamnus vaseyi
                                                   [Bigelovia vaseyi]
                                                   [Ericameria vaseyi]
                                            Chrysothamnus viscidiflorus
                                              Chrysothamnus viscidiflorus ssp. axillaris
                                                     [Chrysothamnus axillaris]
                                                     [Ericameria viscidiflora ssp. axillaris]
                                              Chrysothamnus viscidiflorus ssp. lanceolatus
                                                     [Chrysothamnus viscidiflorus ssp. elegans]
                                                     [Chrysothamnus viscidiflorus var. elegans]
                                                     [Chrysothamnus viscidiflorus var. lanceolatus]
                                                     [Ericameria viscidiflora ssp. lanceolata]
                                              Chrysothamnus viscidiflorus ssp. planifolius
                                                     [Ericameria viscidiflora ssp. planifolia]
                                              Chrysothamnus viscidiflorus ssp. puberulus
                                                     [Chrysothamnus viscidiflorus var. puberulus]
                                                     [Ericameria viscidiflora ssp. puberula]
                                              Chrysothamnus viscidiflorus ssp. viscidiflorus
                                                     [Chrysothamnus pumilus]
                                                     [Chrysothamnus viscidiflorus ssp. latifolius]
                                                     [Ericameria viscidiflora var. latifolia]
                                              Chrysothamnus viscidiflorus var. latifolius
                                              Chrysothamnus viscidiflorus var. stenophyllus
                                                     [Chrysothamnus viscidiflorus ssp. stenophyllus]
                                                     [Ericameria viscidiflora var. stenophylla]
                                              Chrysothamnus viscidiflorus var. viscidiflorus
                                                     [Chrysothamnus viscidiflorus ssp. pumilus]
                                                     [Chrysothamnus viscidiflorus ssp. typicus]
                                                     [Chrysothamnus viscidiflorus var. pumilus]
                                                     [Chrysothamnus viscidiflorus var. typicus]
                                                     [Ericameria viscidiflora]
                                            Chrysothamnus vulcanicus
                                            Chrysothamnus zionis
                                    Chthonia
                                            Chthonia glaucescens
                                    Chucoa
                                    Chuquiraga
                                            Chuquiraga aurea
                                            Chuquiraga avellanedae
                                            Chuquiraga brasiliensis
                                            Chuquiraga erinacea
                                            Chuquiraga insignis
                                            Chuquiraga jussieui
                                            Chuquiraga kingii
                                            Chuquiraga oppositifolia
                                            Chuquiraga rosulata
                                            Chuquiraga rotundifolia
                                            Chuquiraga straminea
                                            Chuquiraga ulicina
                                    Ciceronia
                                            Ciceronia chaptalioides
                                    Cichorium
                                            Cichorium endivia
                                            Cichorium intybus
                                                   [Cichorium intybus var. foliosum]
                                                   [Cichorium intybus var. sativum]
                                    Cineraria
                                            Cineraria multiflora
                                            Cineraria saxifraga
                                    Cirsium
                                            Cirsium acrolepis
                                            Cirsium altissimum
                                                   [Carduus altissimus]
                                                   [Cirsium altissimum var. biltmoreanum]
                                              Cirsium altissimum var. filipendulum
                                            Cirsium anartiolepis
                                            Cirsium andersonii
                                            Cirsium andrewsii
                                            Cirsium araneans
                                            Cirsium arcuum
                                            Cirsium aridum
                                            Cirsium arizonicum
                                              Cirsium arizonicum var. arizonicum
                                                     [Cnicus arizonicus]
                                              Cirsium arizonicum var. bipinnatum
                                                     [Carduus pulchellus]
                                                     [Carduus truncatus]
                                                     [Cirsium bipinnatum]
                                                     [Cirsium calcareum var. bipinnatum]
                                                     [Cirsium calcareum var. pulchellum]
                                                     [Cirsium calcareum]
                                                     [Cirsium pulchellum ssp. bipinnatum]
                                                     [Cirsium pulchellum var. glabrescens]
                                                     [Cirsium pulchellum]
                                                     [Cnicus calcareus]
                                              Cirsium arizonicum var. chellyense
                                              Cirsium arizonicum var. nidulum
                                                     [Cirsium nidulum]
                                              Cirsium arizonicum var. rothrockii
                                                     [Cirsium diffusum]
                                                     [Cirsium pulchellum ssp. diffusum]
                                                     [Cirsium rothrockii]
                                              Cirsium arizonicum var. tenuisectum
                                            Cirsium arvense
                                                   [Breea arvensis]
                                                   [Breea incana]
                                                   [Carduus arvensis]
                                                   [Cirsium arvense var. argenteum]
                                                   [Cirsium arvense var. horridum]
                                                   [Cirsium arvense var. integrifolium]
                                                   [Cirsium arvense var. mite]
                                                   [Cirsium arvense var. vestitum]
                                                   [Cirsium incanum]
                                                   [Cirsium setosum]
                                                   [Serratula arvensis]
                                            Cirsium barnebyi
                                            Cirsium botrys
                                            Cirsium brevifolium
                                            Cirsium brevistylum
                                            Cirsium breweri
                                              Cirsium breweri var. lanosissimum
                                              Cirsium breweri var. wrangelii
                                              Cirsium breweri var. canescens
                                            Cirsium campylon
                                            Cirsium canescens
                                                   [Carduus undulatus var. canescens]
                                                   [Cirsium nebraskense]
                                                   [Cirsium nelsonii]
                                                   [Cirsium plattense]
                                            Cirsium canovirens
                                            Cirsium canum
                                            Cirsium carolinianum
                                            Cirsium centaureae
                                            Cirsium chellyense
                                            Cirsium chuskaense
                                            Cirsium ciliolatum
                                            Cirsium clavatum
                                              Cirsium clavatum var. americanum
                                              Cirsium clavatum var. clavatum
                                              Cirsium clavatum var. osterhoutii
                                            Cirsium clokeyi
                                                   [Cirsium eatonii var. clokeyi]
                                            Cirsium coahuilense
                                            Cirsium conspicuum
                                            Cirsium coulteri
                                            Cirsium crassicaule
                                            Cirsium cymosum
                                              Cirsium cymosum var. cymosum
                                              Cirsium cymosum var. canovirens
                                            Cirsium davisii
                                            Cirsium discolor
                                            Cirsium douglasii
                                              Cirsium douglasii var. breweri
                                              Cirsium douglasii var. canescens
                                              Cirsium douglasii var. douglasii
                                            Cirsium drummondii
                                                   [Cirsium coccinatum]
                                            Cirsium durangense
                                            Cirsium eatonii
                                                   [Cirsium eatonii var. harrisonii]
                                                   [Cirsium eriocephalum var. leiocephalum]
                                                   [Cirsium hookerianum var. eriocephalum]
                                                   [Cirsium olivescens]
                                                   [Cirsium polyphyllum]
                                                   [Cirsium tweedyi]
                                              Cirsium eatonii var. eatonii
                                              Cirsium eatonii var. eriocephalum
                                              Cirsium eatonii var. hesperium
                                              Cirsium eatonii var. murdockii
                                              Cirsium eatonii var. peckii
                                              Cirsium eatonii var. viperinum
                                            Cirsium edule
                                              Cirsium edule var. edule
                                              Cirsium edule var. macounii
                                              Cirsium edule var. wenatchense
                                            Cirsium ehrenbergii
                                            Cirsium engelmannii
                                            Cirsium filipendulum
                                            Cirsium flaccidum
                                            Cirsium flodmanii
                                                   [Cirsium nebraskense var. discissum]
                                                   [Cirsium oblanceolatum]
                                            Cirsium foliosum
                                                   [Cirsium foliosum var. minganense]
                                            Cirsium fontinale
                                              Cirsium fontinale var. campylon
                                              Cirsium fontinale var. fontinale
                                              Cirsium fontinale var. obispoense
                                            Cirsium giganteum
                                            Cirsium gilense
                                            Cirsium grahami
                                            Cirsium grahamii
                                            Cirsium griseum
                                            Cirsium hallii
                                            Cirsium helenioides
                                            Cirsium heterophyllum
                                            Cirsium hillii
                                            Cirsium hookerianum
                                            Cirsium horridulum
                                              Cirsium horridulum var. elliottii
                                              Cirsium horridulum var. horridulum
                                              Cirsium horridulum var. megacanthum
                                              Cirsium horridulum var. vittatum
                                            Cirsium howellii
                                            Cirsium humboldtense
                                            Cirsium hydrophilum
                                              Cirsium hydrophilum var. hydrophilum
                                              Cirsium hydrophilum var. vaseyi
                                            Cirsium inamoenum
                                              Cirsium inamoenum var. davisii
                                              Cirsium inamoenum var. inamoenum
                                            Cirsium inornatum
                                            Cirsium japonicum
                                            Cirsium joannae
                                            Cirsium jorullense
                                            Cirsium kamtschaticum
                                            Cirsium laterifolium
                                            Cirsium lecontei
                                            Cirsium lomatolepis
                                            Cirsium loncholepis
                                            Cirsium longistylum
                                            Cirsium macounii
                                            Cirsium maritimum
                                            Cirsium mexicanum
                                                   [Cnicus portoricensis]
                                            Cirsium modestum
                                            Cirsium mohavense
                                            Cirsium montigenum
                                            Cirsium murdockii
                                            Cirsium muticum
                                                   [Carduus muticus]
                                                   [Cirsium bigelovii]
                                                   [Cirsium muticum var. monticola]
                                                   [Cirsium muticum var. subpinnatifidum]
                                            Cirsium navajoense
                                            Cirsium neomexicanum
                                                   [Carduus inamoenus]
                                                   [Cirsium neomexicanum var. utahense]
                                                   [Cirsium utahense]
                                                   [Cirsium wallowense]
                                              Cirsium neomexicanum var. neomexicanum
                                            Cirsium nuttallii
                                            Cirsium occidentale
                                              Cirsium occidentale var. californicum
                                                     [Cirsium californicum ssp. pseudoreglense]
                                                     [Cirsium californicum var. bernardinum]
                                                     [Cirsium californicum]
                                              Cirsium occidentale var. candidissimum
                                                     [Cirsium candidissimum]
                                                     [Cirsium pastoris]
                                              Cirsium occidentale var. compactum
                                              Cirsium occidentale var. coulteri
                                              Cirsium occidentale var. occidentale
                                              Cirsium occidentale var. venustum
                                              Cirsium occidentale var. lucianum
                                            Cirsium ochrocentrum
                                                   [Cnicus ochrocentrus]
                                              Cirsium ochrocentrum ssp. martinii
                                              Cirsium ochrocentrum ssp. ochrocentrum
                                              Cirsium ochrocentrum var. martinii
                                              Cirsium ochrocentrum var. ochrocentrum
                                              Cirsium ochrocentrum var. townsendii
                                            Cirsium orizabense
                                            Cirsium osterhoutii
                                            Cirsium ownbeyi
                                            Cirsium pallidum
                                            Cirsium palousense
                                            Cirsium palustre
                                            Cirsium parryi
                                              Cirsium parryi ssp. mogollonicum
                                              Cirsium parryi ssp. parryi
                                                     [Cnicus parryi]
                                            Cirsium peckii
                                            Cirsium perplexans
                                            Cirsium pinetorum
                                            Cirsium pitcheri
                                            Cirsium praeteriens
                                            Cirsium pringlei
                                            Cirsium proteanum
                                            Cirsium pulcherrimum
                                              Cirsium pulcherrimum var. aridum
                                              Cirsium pulcherrimum var. pulcherrimum
                                            Cirsium pumilum
                                                   [Carduus pumilus]
                                                   [Cirsium odoratum]
                                              Cirsium pumilum ssp. hillii
                                              Cirsium pumilum var. hillii
                                              Cirsium pumilum var. pumilum
                                            Cirsium pyrenaicum
                                            Cirsium quercetorum
                                              Cirsium quercetorum var. mendocinum
                                              Cirsium quercetorum var. quercetorum
                                              Cirsium quercetorum var. walkerianum
                                              Cirsium quercetorum var. xerolepis
                                            Cirsium remotifolium
                                                   [Cirsium acanthodontum]
                                                   [Cirsium amblylepis]
                                                   [Cirsium callilepis var. oregonense]
                                                   [Cirsium callilepis var. pseudocarlinoides]
                                                   [Cirsium callilepis]
                                                   [Cirsium mendocinum]
                                                   [Cirsium oreganum]
                                                   [Cirsium remotifolium ssp. oregonense]
                                                   [Cirsium remotifolium ssp. pseudocarlinoides]
                                                   [Cirsium remotifolium ssp. remotifolium]
                                                   [Cirsium stenolepidum]
                                              Cirsium remotifolium var. odontolepis
                                              Cirsium remotifolium var. remotifolium
                                              Cirsium remotifolium var. rivulare
                                            Cirsium repandum
                                            Cirsium revolutum
                                            Cirsium rhaphilepis
                                            Cirsium rhothophilum
                                            Cirsium rusbyi
                                            Cirsium rydbergii
                                                   [Cirsium lactucinum]
                                            Cirsium scabrum
                                            Cirsium scapanolepis
                                            Cirsium scariosum
                                                   [Cirsium butleri]
                                                   [Cirsium congdonii]
                                                   [Cirsium erosum]
                                                   [Cirsium kelseyi]
                                                   [Cirsium lacerum]
                                                   [Cirsium magnificum]
                                                   [Cirsium minganense]
                                                   [Cirsium oreophilum]
                                                   [Cirsium x erosum]
                                              Cirsium scariosum var. americanum
                                              Cirsium scariosum var. citrinum
                                              Cirsium scariosum var. coloradense
                                              Cirsium scariosum var. congdonii
                                              Cirsium scariosum var. scariosum
                                              Cirsium scariosum var. thorneae
                                              Cirsium scariosum var. toiyabense
                                              Cirsium scariosum var. robustum
                                            Cirsium scopulorum
                                                   [Cirsium eriocephalum]
                                                   [Cirsium hesperium]
                                            Cirsium smallii
                                            Cirsium spathulifolium
                                            Cirsium subcoriaceum
                                            Cirsium subniveum
                                            Cirsium subuliforme
                                            Cirsium terraenigrae
                                            Cirsium texanum
                                                   [Carduus austrinus]
                                                   [Cirsium texanum var. stenolepis]
                                            Cirsium tioganum
                                              Cirsium tioganum var. coloradense
                                                     [Carduus coloradensis]
                                                     [Cirsium coloradense]
                                              Cirsium tioganum var. tioganum
                                                     [Carduus americanus]
                                                     [Cirsium acaule var. americanum]
                                                     [Cirsium acaulescens]
                                                     [Cirsium americanum]
                                                     [Cirsium coloradense ssp. acaulescens]
                                                     [Cirsium coloradense ssp. longissimum]
                                                     [Cirsium drummondii ssp. lanatum]
                                                     [Cirsium drummondii ssp. latisquamum]
                                                     [Cirsium drummondii ssp. vexans]
                                                     [Cirsium drummondii var. acaulescens]
                                                     [Cirsium drummondii var. oregonense]
                                                     [Cirsium quercetorum var. citrinum]
                                                     [Cnicus drummondii var. acaulescens]
                                                     [Cnicus tioganus]
                                            Cirsium tolucanum
                                            Cirsium trachylomum
                                            Cirsium tracyi
                                                   [Cirsium undulatum var. tracyi]
                                            Cirsium triacanthum
                                            Cirsium turneri
                                            Cirsium undulatum
                                              Cirsium undulatum var. undulatum
                                                     [Carduus helleri]
                                                     [Carduus undulatus]
                                                     [Cirsium helleri]
                                                     [Cirsium megacephalum]
                                                     [Cirsium ochrocentrum var. helleri]
                                                     [Cirsium undulatum var. megacephalum]
                                                     [Cnicus undulatus var. megacephalus]
                                            Cirsium validus
                                            Cirsium vaseyi
                                              Cirsium vaseyi var. hydrophilum
                                            Cirsium vernale
                                            Cirsium vinaceum
                                            Cirsium virginense
                                            Cirsium virginianum
                                            Cirsium vittatum
                                            Cirsium vulgare
                                                   [Carduus lanceolatus]
                                                   [Carduus vulgaris]
                                                   [Cirsium lanceolatum var. hypoleucum]
                                                   [Cirsium lanceolatum]
                                            Cirsium walkerianum
                                            Cirsium wheeleri
                                                   [Cirsium blumeri]
                                                   [Cirsium perennans]
                                                   [Cnicus wheeleri]
                                            Cirsium wrightii
                                            Cirsium x canalense
                                            Cirsium x crassum
                                            Cirsium x iowense
                                            Cirsium x vancouverense
                                    Cladanthus
                                            Cladanthus mixtus
                                    Clappia
                                            Clappia suaedaefolia
                                            Clappia suaedifolia
                                    Clavigera
                                            Clavigera spinulosa
                                    Clibadium
                                            Clibadium anceps
                                            Clibadium arboreum
                                            Clibadium erosum
                                            Clibadium leiocarpum
                                            Clibadium pentaneuron
                                            Clibadium surinamense
                                            Clibadium sylvestre
                                            Clibadium terebinthinaceum
                                    Clomenocoma
                                            Clomenocoma laciniata
                                    Cnicothamnus
                                    Cnicus
                                            Cnicus amplifolius
                                            Cnicus arvensis
                                            Cnicus breweri
                                              Cnicus breweri var. vaseyi
                                            Cnicus clavatus
                                            Cnicus lilacinus
                                            Cnicus nidulus
                                            Cnicus quercetorum
                                            Cnicus raphilepis
                                            Cnicus velatus
                                    Coespeletia
                                    Coleosanthus
                                            Coleosanthus albicaulis
                                            Coleosanthus ambigens
                                            Coleosanthus axillaris
                                            Coleosanthus brachyphyllus
                                            Coleosanthus chenopodinus
                                            Coleosanthus cordifolius
                                            Coleosanthus humilis
                                            Coleosanthus modestus
                                            Coleosanthus nepetifolius
                                            Coleosanthus venulosus
                                    Coleostephus
                                            Coleostephus myconis
                                    Columbiadoria
                                            Columbiadoria hallii
                                    Comaclinium
                                    Commidendrum
                                            Commidendrum robustum
                                    Complaya
                                            Complaya gracilis
                                    Condylidium
                                            Condylidium iresinoides
                                    Condylopodium
                                    Coniothele
                                            Coniothele californica
                                    Conoclinium
                                            Conoclinium betonicifolium
                                              Conoclinium betonicifolium var. betonicifolium
                                              Conoclinium betonicifolium var. integrifolium
                                            Conoclinium coelestinum
                                                   [Eupatorium coelestinum]
                                            Conoclinium dissectum
                                            Conoclinium greggii
                                                   [Eupatorium greggii]
                                            Conoclinium mayfieldii
                                    Constancea
                                            Constancea nevinii
                                    Conyza
                                            Conyza apurensis
                                            Conyza asperifolia
                                            Conyza bilbaoana
                                            Conyza bilboana
                                            Conyza bonariensis
                                                   [Erigeron bonariensis]
                                                   [Erigeron crispus]
                                                   [Erigeron linifolius]
                                                   [Leptilon bonariense]
                                                   [Leptilon linifolium]
                                              Conyza bonariensis var. bonariensis
                                              Conyza bonariensis var. leiotheca
                                            Conyza boranensis
                                            Conyza canadensis
                                              Conyza canadensis var. canadensis
                                                     [Erigeron canadensis]
                                                     [Leptilon canadense]
                                              Conyza canadensis var. glabrata
                                                     [Erigeron canadensis var. glabratus]
                                              Conyza canadensis var. pusilla
                                                     [Conyza parva]
                                                     [Erigeron canadensis var. pusillus]
                                                     [Erigeron pusillus]
                                                     [Leptilon pusillum]
                                              Conyza canadensis var. pusillus
                                            Conyza chilensis
                                            Conyza cinerea
                                            Conyza confusa
                                            Conyza coronopifolia
                                            Conyza dentonae
                                            Conyza erythrolaena
                                            Conyza filaginoides
                                            Conyza floribunda
                                            Conyza gnaphalioides
                                            Conyza laevigata
                                                   [Conyza subspathulata]
                                                   [Erigeron apurensis]
                                                   [Erigeron chinensis]
                                                   [Erigeron spathulatus]
                                                   [Leptilon chinense]
                                            Conyza linifolia
                                            Conyza lobata
                                            Conyza magnimontana
                                            Conyza microcephala
                                            Conyza notobellidiastrum
                                            Conyza primulifolia
                                            Conyza ramosissima
                                                   [Erigeron divaricatus]
                                                   [Leptilon divaricatum]
                                            Conyza sophiaefolia
                                            Conyza subdecurrens
                                    Conyzella
                                            Conyzella canadensis
                                    Coreocarpus
                                            Coreocarpus arizonicus
                                              Coreocarpus arizonicus var. arizonicus
                                              Coreocarpus arizonicus var. filiformis
                                              Coreocarpus arizonicus var. macrophyllus
                                              Coreocarpus arizonicus var. pubescens
                                            Coreocarpus congregatus
                                            Coreocarpus dissectus
                                              Coreocarpus dissectus var. longilobus
                                            Coreocarpus heterocarpus
                                            Coreocarpus involutus
                                            Coreocarpus parthenioides
                                              Coreocarpus parthenioides var. heterocarpus
                                              Coreocarpus parthenioides var. parthenioides
                                            Coreocarpus sanpedroensis
                                            Coreocarpus shrevei
                                              Coreocarpus shrevei var. latilobus
                                            Coreocarpus sonoranus
                                              Coreocarpus sonoranus var. libranus
                                              Coreocarpus sonoranus var. sonoranus
                                    Coreopsis
                                            Coreopsis aristosa
                                            Coreopsis auriculata
                                            Coreopsis basalis
                                                   [Calliopsis basalis]
                                                   [Coreopsis drummondii]
                                            Coreopsis bigelovii
                                                   [Leptosyne bigelovii]
                                                   [Pugiopappus bigelovii]
                                            Coreopsis californica
                                              Coreopsis californica var. californica
                                              Coreopsis californica var. newberryi
                                                     [Coreopsis newberryi]
                                            Coreopsis calliopsidea
                                                   [Agarista calliopsidea]
                                            Coreopsis congregata
                                            Coreopsis corninsularis
                                            Coreopsis debilis
                                            Coreopsis delphiniifolia
                                              Coreopsis delphiniifolia var. chlooidea
                                            Coreopsis douglasii
                                                   [Coreopsis stillmanii var. jonesii]
                                                   [Leptosyne douglasii]
                                            Coreopsis falcata
                                            Coreopsis floridana
                                            Coreopsis gigantea
                                                   [Leptosyne gigantea]
                                                   [Tuckermannia gigantea]
                                            Coreopsis gladiata
                                                   [Coreopsis angustifolia]
                                                   [Coreopsis helianthoides]
                                                   [Coreopsis longifolia var. godfreyi]
                                                   [Coreopsis longifolia]
                                              Coreopsis gladiata var. linifolia
                                            Coreopsis grandiflora
                                              Coreopsis grandiflora var. grandiflora
                                              Coreopsis grandiflora var. harveyana
                                              Coreopsis grandiflora var. inclinata
                                              Coreopsis grandiflora var. longipes
                                                     [Coreopsis longipes]
                                              Coreopsis grandiflora var. pilosa
                                              Coreopsis grandiflora var. saxicola
                                            Coreopsis hamiltonii
                                            Coreopsis heterolepis
                                            Coreopsis insularis
                                            Coreopsis integrifolia
                                            Coreopsis intermedia
                                            Coreopsis lanceolata
                                                   [Coreopsis crassifolia]
                                                   [Coreopsis heterogyna]
                                                   [Coreopsis lanceolata var. villosa]
                                            Coreopsis latifolia
                                            Coreopsis leavenworthii
                                                   [Coreopsis angustata]
                                                   [Coreopsis leavenworthii var. curtissii]
                                                   [Coreopsis leavenworthii var. garberi]
                                                   [Coreopsis leavenworthii var. lewtonii]
                                                   [Coreopsis lewtonii]
                                            Coreopsis linifolia
                                            Coreopsis major
                                                   [Coreopsis major var. oemleri]
                                                   [Coreopsis major var. rigida]
                                                   [Coreopsis major var. stellata]
                                              Coreopsis major var. linearis
                                            Coreopsis maritima
                                                   [Tuckermannia maritima]
                                            Coreopsis mutica
                                              Coreopsis mutica var. carnosifolia
                                            Coreopsis nudata
                                            Coreopsis nuecensis
                                            Coreopsis nuecensoides
                                            Coreopsis oniscicarpa
                                              Coreopsis oniscicarpa var. simulans
                                            Coreopsis palmata
                                            Coreopsis parvifolia
                                            Coreopsis petrophila
                                            Coreopsis petrophiloides
                                            Coreopsis pringlei
                                            Coreopsis pubescens
                                              Coreopsis pubescens var. debilis
                                              Coreopsis pubescens var. pubescens
                                              Coreopsis pubescens var. robusta
                                            Coreopsis pulchra
                                            Coreopsis reptans
                                            Coreopsis rhyacophila
                                            Coreopsis rosea
                                            Coreopsis saxicola
                                              Coreopsis saxicola var. duncanii
                                            Coreopsis saxicoloidea
                                            Coreopsis stillmanii
                                                   [Leptosyne stillmanii]
                                            Coreopsis tinctoria
                                              Coreopsis tinctoria var. atkinsoniana
                                                     [Coreopsis atkinsoniana]
                                              Coreopsis tinctoria var. similis
                                                     [Coreopsis similis]
                                              Coreopsis tinctoria var. tinctoria
                                                     [Coreopsis cardaminefolia]
                                                     [Coreopsis stenophylla]
                                                     [Coreopsis tinctoria var. imminuta]
                                            Coreopsis trichosperma
                                            Coreopsis tripteris
                                                   [Coreopsis tripteris var. deamii]
                                                   [Coreopsis tripteris var. intercedens]
                                                   [Coreopsis tripteris var. smithii]
                                                   [Coreopsis tripteris var. subrhomboidea]
                                            Coreopsis verticillata
                                            Coreopsis wrightii
                                                   [Coreopsis basalis var. wrightii]
                                                   [Coreopsis drummondii var. wrightii]
                                    Corethrogyne
                                            Corethrogyne californica
                                              Corethrogyne californica var. californica
                                              Corethrogyne californica var. lyonii
                                              Corethrogyne californica var. obovata
                                            Corethrogyne filaginifolia
                                              Corethrogyne filaginifolia var. bernardina
                                              Corethrogyne filaginifolia var. brevicula
                                              Corethrogyne filaginifolia var. californica
                                              Corethrogyne filaginifolia var. filaginifolia
                                              Corethrogyne filaginifolia var. glomerata
                                              Corethrogyne filaginifolia var. hamiltonensis
                                              Corethrogyne filaginifolia var. incana
                                              Corethrogyne filaginifolia var. latifolia
                                              Corethrogyne filaginifolia var. linifolia
                                              Corethrogyne filaginifolia var. peirsonii
                                              Corethrogyne filaginifolia var. pinetorum
                                              Corethrogyne filaginifolia var. rigida
                                              Corethrogyne filaginifolia var. robusta
                                              Corethrogyne filaginifolia var. sessilis
                                              Corethrogyne filaginifolia var. virgata
                                              Corethrogyne filaginifolia var. viscidula
                                              Corethrogyne filaginifolia var. pacifica
                                            Corethrogyne flagellaris
                                            Corethrogyne floccosa
                                            Corethrogyne incana
                                            Corethrogyne leucophylla
                                            Corethrogyne linifolia
                                            Corethrogyne obovata
                                            Corethrogyne scabra
                                            Corethrogyne sessilis
                                            Corethrogyne spathulata
                                            Corethrogyne tomentella
                                              Corethrogyne virgata var. bernardina
                                            Corethrogyne viscidula
                                              Corethrogyne viscidula var. greenei
                                    Cosmos
                                            Cosmos atrosanguineus
                                            Cosmos bipinnatus
                                            Cosmos carvifolius
                                            Cosmos caudatus
                                            Cosmos crithmifolius
                                            Cosmos diversifolius
                                            Cosmos linearifolius
                                              Cosmos linearifolius var. magnifolius
                                            Cosmos montanus
                                            Cosmos ochroleucoflorus
                                            Cosmos palmeri
                                            Cosmos parviflorus
                                                   [Coreopsis parviflora]
                                            Cosmos pringlei
                                            Cosmos scabiosoides
                                            Cosmos sulphureus
                                    Cota
                                            Cota altissima
                                            Cota tinctoria
                                                   [Anthemis tinctoria]
                                    Cotula
                                            Cotula australis
                                            Cotula coronopifolia
                                            Cotula mexicana
                                            Cotula scariosa
                                            Cotula verbesina
                                    Coulterella
                                            Coulterella capitata
                                    Cousinia
                                            Cousinia compacta
                                    Craspedia
                                            Craspedia glauca
                                            Craspedia uniflora
                                    Crassina
                                    Crassocephalum
                                            Crassocephalum crepidioides
                                            Crassocephalum vitellinum
                                    Crepis
                                            Crepis aculeata
                                            Crepis acuminata
                                              Crepis acuminata ssp. acuminata
                                                     [Crepis acuminata ssp. typica]
                                                     [Psilochenia acuminata ssp. pluriflora]
                                                     [Psilochenia acuminata]
                                              Crepis acuminata ssp. pluriflora
                                            Crepis alpicola
                                            Crepis andersonii
                                            Crepis angustata
                                            Crepis arabica
                                            Crepis atrabarba
                                            Crepis atribarba
                                              Crepis atribarba ssp. atribarba
                                              Crepis atribarba ssp. cytotaxonomicorum
                                              Crepis atribarba ssp. originalis
                                              Crepis atribarba ssp. typicus
                                              Crepis atribarba var. cytotaxonomicorum
                                            Crepis bakeri
                                              Crepis bakeri ssp. bakeri
                                              Crepis bakeri ssp. cusickii
                                              Crepis bakeri ssp. idahoensis
                                            Crepis barbata
                                            Crepis barbigera
                                            Crepis biennis
                                            Crepis bursifolia
                                            Crepis capillaris
                                            Crepis denticulata
                                            Crepis elegans
                                            Crepis exilis
                                            Crepis foetida
                                              Crepis foetida var. foetida
                                              Crepis foetida var. rhoeadifolia
                                            Crepis glaucella
                                            Crepis intermedia
                                                   [Crepis acuminata var. intermedia]
                                                   [Psilochenia intermedia]
                                            Crepis kotschyana
                                            Crepis lampsanoides
                                            Crepis modocensis
                                              Crepis modocensis ssp. glareosa
                                              Crepis modocensis ssp. modocensis
                                              Crepis modocensis ssp. rostrata
                                              Crepis modocensis ssp. subacaulis
                                              Crepis modocensis ssp. typica
                                              Crepis modocensis var. rostrata
                                            Crepis mogollonica
                                            Crepis monticola
                                            Crepis nana
                                              Crepis nana ssp. clivicola
                                              Crepis nana ssp. nana
                                              Crepis nana ssp. ramosa
                                              Crepis nana ssp. typica
                                              Crepis nana var. lyratifolia
                                              Crepis nana var. ramosa
                                            Crepis neomexicana
                                            Crepis nicaeensis
                                            Crepis occidentalis
                                              Crepis occidentalis ssp. conjuncta
                                              Crepis occidentalis ssp. costata
                                                     [Crepis occidentalis var. costata]
                                                     [Psilochenia occidentalis ssp. costata]
                                              Crepis occidentalis ssp. occidentalis
                                                     [Crepis occidentalis ssp. typica]
                                                     [Psilochenia occidentalis ssp. conjuncta]
                                                     [Psilochenia occidentalis]
                                              Crepis occidentalis ssp. pumila
                                              Crepis occidentalis var. gracilis
                                              Crepis occidentalis var. nevadensis
                                              Crepis occidentalis var. pumila
                                            Crepis paludosa
                                            Crepis pannonica
                                            Crepis perplexans
                                            Crepis petiolata
                                            Crepis platyphylla
                                            Crepis pleurocarpa
                                            Crepis pulchra
                                            Crepis rigida
                                            Crepis riparia
                                            Crepis rubra
                                            Crepis runcinata
                                              Crepis runcinata ssp. andersonii
                                              Crepis runcinata ssp. barberi
                                                     [Crepis barberi]
                                                     [Crepis glauca ssp. barberi]
                                                     [Crepis runcinata var. barberi]
                                                     [Psilochenia runcinata ssp. barberi]
                                              Crepis runcinata ssp. glauca
                                                     [Crepis glauca]
                                                     [Crepis runcinata var. glauca]
                                                     [Psilochenia runcinata ssp. glauca]
                                              Crepis runcinata ssp. hallii
                                              Crepis runcinata ssp. hispidulosa
                                              Crepis runcinata ssp. imbricata
                                              Crepis runcinata ssp. runcinata
                                              Crepis runcinata ssp. typica
                                              Crepis runcinata var. andersonii
                                              Crepis runcinata var. hispidulosa
                                              Crepis runcinata var. imbricata
                                            Crepis sancta
                                            Crepis scopulorum
                                            Crepis setosa
                                            Crepis tectorum
                                            Crepis vesicaria
                                              Crepis vesicaria ssp. haenseleri
                                              Crepis vesicaria ssp. taraxacifolia
                                              Crepis vesicaria var. taraxacifolia
                                            Crepis zacintha
                                    Critonia
                                            Critonia adamsii
                                                   [Adenocritonia adamsii]
                                            Critonia eriocarpa
                                            Critonia hebebotrya
                                            Critonia iltisii
                                            Critonia morifolia
                                            Critonia portoricensis
                                            Critonia quadrangularis
                                                   [Eupatorium quadrangulare]
                                    Critoniadelphus
                                    Critoniella
                                    Critoniopsis
                                            Critoniopsis foliosa
                                            Critoniopsis macvaughii
                                    Crocidium
                                            Crocidium multicaule
                                    Crockeria
                                            Crockeria chrysantha
                                    Cronquistianthus
                                    Croptilon
                                            Croptilon divaricatum
                                                   [Haplopappus divaricatus var. hookerianus]
                                                   [Haplopappus divaricatus]
                                                   [Inula divaricata]
                                                   [Isopappus divaricatus]
                                              Croptilon divaricatum var. graniticum
                                              Croptilon divaricatum var. hirtellum
                                              Croptilon divaricatum var. hookerianum
                                            Croptilon hookerianum
                                              Croptilon hookerianum var. graniticum
                                              Croptilon hookerianum var. hookerianum
                                              Croptilon hookerianum var. validum
                                            Croptilon rigidifolium
                                    Crossostephium
                                            Crossostephium insulare
                                    Crossothamnus
                                    Crupina
                                            Crupina vulgaris
                                              Crupina vulgaris var. brachypappa
                                              Crupina vulgaris var. vulgaris
                                    Cuatrecasanthus
                                    Cuatrecasasiella
                                    Cuchumatanea
                                    Culcitium
                                    Cuniculotinus
                                            Cuniculotinus gramineus
                                    Cupularia
                                            Cupularia viscosa
                                    Cyanopsis
                                            Cyanopsis muricata
                                    Cyanthillium
                                            Cyanthillium cinereum
                                    Cyathomone
                                    Cyclachaena
                                            Cyclachaena pedicellata
                                            Cyclachaena xanthiifolia
                                                   [Cyclachaena xanthifolia]
                                                   [Iva xanthifolia]
                                    Cyclolepis
                                            Cyclolepis genistoides
                                    Cymbia
                                            Cymbia occidentalis
                                    Cymophora
                                            Cymophora accedens
                                            Cymophora pringlei
                                    Cynara
                                            Cynara cardunculus
                                              Cynara cardunculus ssp. cardunculus
                                              Cynara cardunculus ssp. flavescens
                                            Cynara scolymus
                                    Cynthia
                                            Cynthia dandelion
                                            Cynthia montana
                                    Cyrtocymura
                                            Cyrtocymura harleyi
                                    Dahlia
                                            Dahlia apiculata
                                            Dahlia australis
                                            Dahlia coccinea
                                            Dahlia gentryi
                                            Dahlia imperialis
                                            Dahlia linearis
                                            Dahlia merckii
                                            Dahlia pinnata
                                            Dahlia rosea
                                            Dahlia rudis
                                            Dahlia rupicola
                                            Dahlia sherffii
                                            Dahlia tenuicaulis
                                            Dahlia variabilis
                                    Darwiniothamnus
                                    Dasycondylus
                                    Dasyphyllum
                                            Dasyphyllum brasiliense
                                            Dasyphyllum spinescens
                                            Dasyphyllum tomentosum
                                    Decachaeta
                                            Decachaeta haenkeana
                                            Decachaeta incompta
                                            Decachaeta ovatifolia
                                            Decachaeta scabrella
                                    Deinandra
                                            Deinandra arida
                                            Deinandra bacigalupii
                                            Deinandra clementina
                                            Deinandra conjugens
                                            Deinandra corymbosa
                                              Deinandra corymbosa ssp. corymbosa
                                              Deinandra corymbosa ssp. macrocephala
                                            Deinandra fasciculata
                                                   [Hemizonia fasciculata]
                                            Deinandra floribunda
                                            Deinandra halliana
                                            Deinandra increscens
                                              Deinandra increscens ssp. foliosa
                                              Deinandra increscens ssp. increscens
                                              Deinandra increscens ssp. villosa
                                            Deinandra kelloggii
                                                   [Hemizonia kelloggii]
                                            Deinandra lobbii
                                            Deinandra martirensis
                                            Deinandra minthornii
                                            Deinandra mohavensis
                                            Deinandra pallida
                                            Deinandra paniculata
                                                   [Hemizonia paniculata]
                                            Deinandra pentactis
                                            Deinandra simplex
                                            Deinandra streetsii
                                            Deinandra wrightii
                                    Delairea
                                            Delairea odorata
                                    Delilea
                                            Delilea biflora
                                    Delilia
                                            Delilia biflora
                                    Dendranthema
                                            Dendranthema coronarium
                                            Dendranthema hultenii
                                            Dendranthema indicum
                                                   [Chrysanthemum indicum]
                                            Dendranthema morifolium
                                    Dendrophorbium
                                    Dendroseris
                                    Desmanthodium
                                            Desmanthodium fruticosum
                                            Desmanthodium hintoniorum
                                            Desmanthodium hondurense
                                            Desmanthodium ovatum
                                            Desmanthodium perfoliatum
                                    Diaperia
                                            Diaperia candida
                                                   [Evax candida]
                                            Diaperia prolifera
                                                   [Evax prolifera]
                                                   [Filago nuttallii]
                                                   [Filago prolifera]
                                              Diaperia prolifera var. barnebyi
                                              Diaperia prolifera var. prolifera
                                            Diaperia verna
                                                   [Diaperia multicaulis]
                                                   [Evax multicaulis var. multicaulis]
                                                   [Evax multicaulis]
                                                   [Evax verna var. verna]
                                                   [Evax verna]
                                              Diaperia verna var. drummondii
                                                     [Diaperia drummondii]
                                                     [Evax multicaulis var. drummondii]
                                                     [Evax verna var. drummondii]
                                                     [Filaginopsis drummondii]
                                                     [Filago verna var. drummondii]
                                              Diaperia verna var. verna
                                    Dichaeta
                                            Dichaeta tenella
                                    Dichaetophora
                                            Dichaetophora campestris
                                    Dicoria
                                            Dicoria argentea
                                            Dicoria canescens
                                              Dicoria canescens ssp. brandegeei
                                                     [Dicoria brandegeei]
                                                     [Dicoria canescens var. brandegeei]
                                                     [Dicoria paniculata]
                                              Dicoria canescens ssp. canescens
                                                     [Dicoria oblongifolia]
                                              Dicoria canescens ssp. clarkiae
                                                     [Dicoria clarkiae]
                                              Dicoria canescens ssp. hispidula
                                              Dicoria canescens ssp. wetherillii
                                              Dicoria canescens var. hispidula
                                              Dicoria canescens var. wetherillii
                                            Dicoria clarkae
                                            Dicoria wetherillii
                                    Dicranocarpus
                                            Dicranocarpus parviflorus
                                    Digitacalia
                                            Digitacalia crypta
                                    Dillandia
                                    Dimeresia
                                            Dimeresia howellii
                                    Dimerostemma
                                    Dimorphotheca
                                            Dimorphotheca annua
                                            Dimorphotheca cuneata
                                            Dimorphotheca ecklonis
                                            Dimorphotheca pluvialis
                                            Dimorphotheca sinuata
                                    Dinoseris
                                    Diplactis
                                            Diplactis alpina
                                              Diplactis alpina ssp. vierhapperi
                                    Diplopappus
                                            Diplopappus ericoides
                                              Diplopappus ericoides var. hirtella
                                            Diplopappus lutescens
                                    Diplostelma
                                            Diplostelma bellioides
                                    Diplostephium
                                    Distasis
                                           [Dictyoloma]
                                    Dittrichia
                                            Dittrichia graveolens
                                                   [Inula graveolens]
                                            Dittrichia viscosa
                                    Doellingeria
                                            Doellingeria humilis
                                            Doellingeria infirma
                                            Doellingeria ptarmicoides
                                            Doellingeria reticulata
                                            Doellingeria scabra
                                            Doellingeria sericocarpoides
                                            Doellingeria umbellata
                                              Doellingeria umbellata ssp. pubens
                                              Doellingeria umbellata var. latifolia
                                              Doellingeria umbellata var. pubens
                                              Doellingeria umbellata var. umbellata
                                    Doniophyton
                                    Dorobaea
                                    Doronicum
                                           [Elachia]
                                            Doronicum acaule
                                            Doronicum austriacum
                                            Doronicum orientale
                                            Doronicum pardalianches
                                            Doronicum plantagineum
                                    Dracopis
                                    Dresslerothamnus
                                    Dubautia
                                            Dubautia arborea
                                            Dubautia ciliolata
                                              Dubautia ciliolata ssp. ciliolata
                                              Dubautia ciliolata ssp. glutinosa
                                              Dubautia ciliolata var. juniperoides
                                              Dubautia ciliolata var. trinervia
                                            Dubautia coriacea
                                            Dubautia dolosa
                                            Dubautia herbstobatae
                                            Dubautia hillebrandii
                                            Dubautia imbricata
                                              Dubautia imbricata ssp. acronaea
                                              Dubautia imbricata ssp. imbricata
                                            Dubautia kenwoodii
                                            Dubautia knudsenii
                                              Dubautia knudsenii ssp. filiformis
                                              Dubautia knudsenii ssp. knudsenii
                                              Dubautia knudsenii ssp. nagatae
                                              Dubautia knudsenii var. degeneri
                                            Dubautia kohalae
                                            Dubautia laevigata
                                              Dubautia laevigata var. parvifolia
                                            Dubautia latifolia
                                            Dubautia laxa
                                              Dubautia laxa ssp. bryanii
                                              Dubautia laxa ssp. hirsuta
                                              Dubautia laxa ssp. laxa
                                              Dubautia laxa ssp. pseudoplantaginea
                                              Dubautia laxa var. bryanii
                                              Dubautia laxa var. greenwelliae
                                              Dubautia laxa var. hirsuta
                                              Dubautia laxa var. hispida
                                              Dubautia laxa var. intercedens
                                              Dubautia laxa var. obovata
                                              Dubautia laxa var. pedicellata
                                              Dubautia laxa var. pseudoplantaginea
                                              Dubautia laxa var. skottsbergii
                                              Dubautia laxa var. waianensis
                                            Dubautia linearis
                                              Dubautia linearis ssp. hillebrandii
                                              Dubautia linearis ssp. linearis
                                              Dubautia linearis ssp. opposita
                                              Dubautia linearis var. opposita
                                            Dubautia lonchophylla
                                            Dubautia magnifolia
                                            Dubautia menziesii
                                              Dubautia menziesii var. angustifolia
                                            Dubautia microcephala
                                            Dubautia molokaiensis
                                              Dubautia molokaiensis var. oppositifolia
                                              Dubautia molokaiensis var. stipitata
                                            Dubautia montana
                                              Dubautia montana var. longifolia
                                              Dubautia montana var. robustior
                                            Dubautia nagatae
                                            Dubautia paleata
                                            Dubautia pauciflorula
                                            Dubautia plantaginea
                                              Dubautia plantaginea ssp. humilis
                                              Dubautia plantaginea ssp. magnifolia
                                              Dubautia plantaginea ssp. plantaginea
                                              Dubautia plantaginea var. acridentata
                                              Dubautia plantaginea var. glandulosa
                                              Dubautia plantaginea var. pauoaensis
                                              Dubautia plantaginea var. platyphylla
                                              Dubautia plantaginea var. strigosa
                                            Dubautia platyphylla
                                              Dubautia platyphylla var. leptophylla
                                            Dubautia raillardioides
                                            Dubautia reticulata
                                            Dubautia rockii
                                            Dubautia scabra
                                              Dubautia scabra ssp. leiophylla
                                              Dubautia scabra ssp. scabra
                                              Dubautia scabra var. leiophylla
                                              Dubautia scabra var. munroi
                                            Dubautia sherffiana
                                              Dubautia sherffiana var. paucinervia
                                            Dubautia struthioloides
                                            Dubautia syndetica
                                            Dubautia ternifolia
                                            Dubautia thyrsiflora
                                              Dubautia thyrsiflora var. cernua
                                            Dubautia waialealae
                                            Dubautia waianapanapaenis
                                            Dubautia x demissifolia
                                            Dubautia x fallax
                                            Dubautia x fucosa
                                            Dubautia x media
                                            Dubautia x mendacoides
                                            Dubautia x mendax
                                            Dubautia x molokaiensis
                                            Dubautia x montana
                                            Dubautia x paludicola
                                            Dubautia x thyrsiflora
                                    Dugaldia
                                            Dugaldia grandiflora
                                            Dugaldia integrifolia
                                    Dugesia
                                            Dugesia mexicana
                                    Dyscritothamnus
                                            Dyscritothamnus filifolius
                                    Dysodiopsis
                                            Dysodiopsis tagetoides
                                    Dysodium
                                            Dysodium divaricatum
                                    Dyssodia
                                            Dyssodia anthemidifolia
                                                   [Boeberastrum anthemidifolium]
                                            Dyssodia appendiculata
                                            Dyssodia aurantiaca
                                            Dyssodia berlandieri
                                            Dyssodia chrysanthemoides
                                            Dyssodia gentryi
                                            Dyssodia gypsophila
                                            Dyssodia littoralis
                                            Dyssodia micropoides
                                            Dyssodia papposa
                                                   [Boebera papposa]
                                                   [Tagetes papposa]
                                            Dyssodia pinnata
                                              Dyssodia pinnata var. glabrescens
                                            Dyssodia sanguinea
                                            Dyssodia speciosa
                                            Dyssodia squamosa
                                            Dyssodia tagetoides
                                            Dyssodia tenuifolia
                                            Dyssodia tenuiloba
                                              Dyssodia tenuiloba ssp. wrightii
                                              Dyssodia tenuiloba var. texana
                                              Dyssodia tenuiloba var. treculii
                                            Dyssodia tephroleuca
                                            Dyssodia texana
                                            Dyssodia treculii
                                            Dyssodia wrightii
                                    Eastwoodia
                                            Eastwoodia elegans
                                    Eatonella
                                            Eatonella congdonii
                                            Eatonella nivea
                                    Echinacea
                                            Echinacea angustifolia
                                              Echinacea angustifolia var. angustifolia
                                              Echinacea angustifolia var. strigosa
                                              Echinacea angustifolia var. tennesseensis
                                            Echinacea atrorubens
                                              Echinacea atrorubens var. neglecta
                                              Echinacea atrorubens var. paradoxa
                                            Echinacea laevigata
                                            Echinacea pallida
                                                   [Brauneria pallida]
                                                   [Rudbeckia pallida]
                                              Echinacea pallida var. angustifolia
                                              Echinacea pallida var. sanguinea
                                              Echinacea pallida var. strigosa
                                            Echinacea paradoxa
                                              Echinacea paradoxa var. neglecta
                                              Echinacea paradoxa var. paradoxa
                                            Echinacea purpurea
                                                   [Brauneria purpurea]
                                                   [Echinacea purpurea var. arkansana]
                                                   [Rudbeckia purpurea]
                                              Echinacea purpurea var. laevigata
                                            Echinacea sanguinea
                                            Echinacea simulata
                                            Echinacea tennesseensis
                                    Echinops
                                            Echinops bannaticus
                                            Echinops commutatus
                                            Echinops echinatus
                                            Echinops exaltatus
                                            Echinops fruticosus
                                            Echinops macrochaetus
                                            Echinops ritro
                                              Echinops ritro ssp. ruthenicus
                                            Echinops ruthenicus
                                            Echinops sphaerocephalus
                                    Eclipta
                                            Eclipta prostrata
                                                   [Eclipta alba]
                                                   [Eclipta erecta]
                                                   [Eclipta punctata]
                                                   [Verbesina alba]
                                                   [Verbesina prostrata]
                                    Egletes
                                            Egletes liebmannii
                                            Egletes prostrata
                                            Egletes viscosa
                                                   [Cotula viscosa]
                                    Eirmocephala
                                    Elaphandra
                                    Elephantopus
                                            Elephantopus angustifolius
                                            Elephantopus carolinianus
                                                   [Elephantopus flexuosus]
                                                   [Elephantopus violaceus]
                                              Elephantopus carolinianus var. simplex
                                            Elephantopus elatus
                                              Elephantopus elatus var. intermedius
                                            Elephantopus hypomalacus
                                            Elephantopus martii
                                            Elephantopus mollis
                                            Elephantopus nudatus
                                            Elephantopus nudicaulis
                                            Elephantopus pilosus
                                            Elephantopus scaber
                                            Elephantopus spicatus
                                            Elephantopus tomentosus
                                    Eleutheranthera
                                            Eleutheranthera ruderalis
                                    Ellenbergia
                                    Elvira
                                            Elvira biflora
                                    Emilia
                                            Emilia coccinea
                                            Emilia fosbergii
                                            Emilia javanica
                                            Emilia sonchifolia
                                              Emilia sonchifolia var. javanica
                                              Emilia sonchifolia var. sonchifolia
                                    Encelia
                                            Encelia actoni
                                                   [Encelia actonii]
                                                   [Encelia frutescens var. actoni]
                                                   [Encelia virginensis ssp. actoni]
                                                   [Encelia virginensis ssp. actonii]
                                                   [Encelia virginensis var. actoni]
                                                   [Encelia virginensis var. actonii]
                                            Encelia asperifolia
                                            Encelia californica
                                              Encelia californica var. asperifolia
                                            Encelia calva
                                            Encelia canescens
                                            Encelia conspersa
                                            Encelia densifolia
                                            Encelia farinosa
                                                   [Encelia farinosa var. radians]
                                              Encelia farinosa var. farinosa
                                              Encelia farinosa var. phenicodonta
                                            Encelia frutescens
                                              Encelia frutescens var. actonii
                                              Encelia frutescens var. frutescens
                                                     [Simsia frutescens]
                                            Encelia halimifolia
                                            Encelia laciniata
                                            Encelia mexicana
                                            Encelia nutans
                                                   [Enceliopsis nutans]
                                            Encelia oblongifolia
                                            Encelia palmeri
                                            Encelia ravenii
                                            Encelia resinifera
                                                   [Encelia frutescens var. resinosa]
                                              Encelia resinifera ssp. resinifera
                                              Encelia resinifera ssp. tenuifolia
                                                     [Encelia resinifera var. tenuifolia]
                                            Encelia scaposa
                                                   [Encelia scaposa var. stenophylla]
                                                   [Simsia scaposa]
                                            Encelia stenophylla
                                            Encelia ventorum
                                            Encelia virginensis
                                              Encelia virginensis var. virginensis
                                                     [Encelia frutescens var. virginensis]
                                    Enceliopsis
                                            Enceliopsis argophylla
                                                   [Tithonia argophylla]
                                            Enceliopsis covillei
                                                   [Enceliopsis argophylla var. grandiflora]
                                                   [Helianthella covillei]
                                            Enceliopsis nudicaulis
                                              Enceliopsis nudicaulis var. corrugata
                                              Enceliopsis nudicaulis var. nudicaulis
                                                     [Encelia nudicaulis]
                                    Endorima
                                            Endorima atropurpurea
                                            Endorima uniflora
                                    Engelmannia
                                            Engelmannia peristenia
                                                   [Engelmannia pinnatifida]
                                    Enydra
                                            Enydra sessilis
                                    Epaltes
                                            Epaltes australis
                                            Epaltes mexicana
                                    Erato
                                    Erechtites
                                            Erechtites arguta
                                            Erechtites glomerata
                                            Erechtites glomeratus
                                            Erechtites hieracifolia
                                            Erechtites hieraciifolia
                                              Erechtites hieraciifolia var. cacalioides
                                              Erechtites hieraciifolia var. hieraciifolia
                                              Erechtites hieraciifolia var. intermedia
                                              Erechtites hieraciifolia var. megalocarpa
                                              Erechtites hieraciifolia var. praealta
                                            Erechtites hieraciifolius
                                              Erechtites hieraciifolius var. hieraciifolius
                                            Erechtites megalocarpa
                                            Erechtites minima
                                            Erechtites minimus
                                            Erechtites prenanthoides
                                            Erechtites valerianifolia
                                    Eremanthus
                                            Eremanthus capitatus
                                            Eremanthus glomerulatus
                                            Eremanthus pannosus
                                            Eremanthus pohlii
                                    Eremonanus
                                            Eremonanus mohavensis
                                    Eremosis
                                    Ericameria
                                            Ericameria albida
                                                   [Chrysothamnus albidus]
                                            Ericameria arborescens
                                                   [Haplopappus arborescens]
                                                   [Linosyris arborescens]
                                            Ericameria arizonica
                                            Ericameria austrotexana
                                            Ericameria bloomeri
                                            Ericameria brachylepis
                                                   [Bigelovia brachylepis]
                                                   [Haplopappus propinquus]
                                            Ericameria cervina
                                                   [Haplopappus cervinus]
                                            Ericameria compacta
                                            Ericameria cooperi
                                                   [Haplopappus cooperi]
                                              Ericameria cooperi ssp. bajacalifornica
                                              Ericameria cooperi var. bajacalifornica
                                              Ericameria cooperi var. cooperi
                                            Ericameria crispa
                                                   [Haplopappus crispus]
                                            Ericameria cuneata
                                              Ericameria cuneata var. cuneata
                                                     [Haplopappus cuneatus]
                                              Ericameria cuneata var. macrocephala
                                              Ericameria cuneata var. spathulata
                                                     [Haplopappus cuneatus var. spathulatus]
                                            Ericameria discoidea
                                              Ericameria discoidea var. discoidea
                                              Ericameria discoidea var. linearis
                                            Ericameria eremobia
                                            Ericameria ericoides
                                              Ericameria ericoides var. pachylepis
                                            Ericameria fasciculata
                                            Ericameria gilmanii
                                            Ericameria greenei
                                            Ericameria juarezensis
                                            Ericameria laricifolia
                                                   [Haplopappus laricifolius]
                                            Ericameria lignumviridis
                                            Ericameria linearifolia
                                                   [Haplopappus linearifolius ssp. interior]
                                                   [Haplopappus linearifolius var. interior]
                                                   [Haplopappus linearifolius]
                                                   [Stenotopsis interior]
                                                   [Stenotopsis linearifolia var. interior]
                                                   [Stenotopsis linearifolia]
                                            Ericameria linearis
                                            Ericameria martirensis
                                            Ericameria microphylla
                                            Ericameria monactis
                                            Ericameria nana
                                                   [Haplopappus nanus]
                                            Ericameria nauseosa
                                                   [Chrysothamnus nauseosus ssp. uintahensis]
                                                   [Chrysothamnus nauseosus ssp. viscosus]
                                                   [Chrysothamnus nauseosus var. uintahensis]
                                                   [Chrysothamnus nauseosus]
                                              Ericameria nauseosa var. arenaria
                                                     [Chrysothamnus nauseosus ssp. arenarius]
                                                     [Chrysothamnus nauseosus var. arenarius]
                                              Ericameria nauseosa var. bernardina
                                              Ericameria nauseosa var. bigelovii
                                                     [Chrysothamnus nauseosus ssp. bigelovii]
                                                     [Chrysothamnus nauseosus var. bigelovii]
                                              Ericameria nauseosa var. graveolens
                                                     [Chrysothamnus graveolens]
                                                     [Chrysothamnus nauseosus ssp. graveolens]
                                                     [Chrysothamnus nauseosus var. glabratus]
                                                     [Chrysothamnus nauseosus var. graveolens]
                                                     [Chrysothamnus nauseosus var. petrophilus]
                                                     [Ericameria nauseosa var. glabrata]
                                              Ericameria nauseosa var. hololeuca
                                                     [Chrysothamnus nauseosus ssp. gnaphalodes]
                                                     [Chrysothamnus nauseosus ssp. hololeucus]
                                                     [Chrysothamnus nauseosus var. gnaphalodes]
                                                     [Chrysothamnus nauseosus var. hololeucus]
                                              Ericameria nauseosa var. iridis
                                              Ericameria nauseosa var. juncea
                                                     [Chrysothamnus nauseosus ssp. junceus]
                                                     [Chrysothamnus nauseosus var. junceus]
                                              Ericameria nauseosa var. latisquamea
                                                     [Chrysothamnus nauseosus ssp. latisquameus]
                                                     [Chrysothamnus nauseosus var. latisquameus]
                                              Ericameria nauseosa var. leiosperma
                                                     [Chrysothamnus nauseosus ssp. leiospermus]
                                                     [Chrysothamnus nauseosus var. abbreviatus]
                                                     [Chrysothamnus nauseosus var. leiospermus]
                                              Ericameria nauseosa var. mohavensis
                                              Ericameria nauseosa var. nana
                                              Ericameria nauseosa var. nauseosa
                                                     [Chrysothamnus frigidus]
                                                     [Chrysothamnus nauseosus ssp. albicaulis]
                                                     [Chrysothamnus nauseosus ssp. bernardinus]
                                                     [Chrysothamnus nauseosus ssp. iridis]
                                                     [Chrysothamnus nauseosus ssp. nanus]
                                                     [Chrysothamnus nauseosus ssp. psilocarpus]
                                                     [Chrysothamnus nauseosus ssp. salicifolius]
                                                     [Chrysothamnus nauseosus ssp. speciosus]
                                                     [Chrysothamnus nauseosus ssp. texensis]
                                                     [Chrysothamnus nauseosus ssp. washoensis]
                                                     [Chrysothamnus nauseosus var. albicaulis]
                                                     [Chrysothamnus nauseosus var. glareosus]
                                                     [Chrysothamnus nauseosus var. iridis]
                                                     [Chrysothamnus nauseosus var. nanus]
                                                     [Chrysothamnus nauseosus var. nauseosus]
                                                     [Chrysothamnus nauseosus var. psilocarpus]
                                                     [Chrysothamnus nauseosus var. salicifolius]
                                                     [Chrysothamnus nauseosus var. speciosus]
                                                     [Chrysothamnus nauseosus var. typicus]
                                                     [Chrysothamnus nauseosus var. washoensis]
                                                     [Ericameria nauseosa ssp. nauseosa]
                                              Ericameria nauseosa var. nitida
                                                     [Chrysothamnus nauseosus ssp. nitidus]
                                                     [Chrysothamnus nauseosus var. nitidus]
                                              Ericameria nauseosa var. oreophila
                                                     [Chrysothamnus nauseosus ssp. ceruminosus]
                                                     [Chrysothamnus nauseosus ssp. consimilis]
                                                     [Chrysothamnus nauseosus ssp. mohavensis]
                                                     [Chrysothamnus nauseosus ssp. pinifolius]
                                                     [Chrysothamnus nauseosus var. artus]
                                                     [Chrysothamnus nauseosus var. consimilis]
                                                     [Chrysothamnus nauseosus var. mohavensis]
                                                     [Chrysothamnus nauseosus var. oreophilus]
                                                     [Ericameria nauseosa ssp. consimilis]
                                                     [Ericameria nauseosa var. arta]
                                              Ericameria nauseosa var. psilocarpa
                                              Ericameria nauseosa var. salicifolia
                                              Ericameria nauseosa var. speciosa
                                              Ericameria nauseosa var. texensis
                                              Ericameria nauseosa var. turbinata
                                                     [Chrysothamnus nauseosus ssp. turbinatus]
                                                     [Chrysothamnus nauseosus var. turbinatus]
                                              Ericameria nauseosa var. washoensis
                                              Ericameria nauseosa var. ceruminosa
                                            Ericameria obovata
                                            Ericameria ophitidis
                                            Ericameria palmeri
                                              Ericameria palmeri var. pachylepis
                                              Ericameria palmeri var. palmeri
                                            Ericameria paniculata
                                                   [Chrysothamnus paniculatus]
                                            Ericameria parishii
                                              Ericameria parishii var. parishii
                                            Ericameria parrasana
                                            Ericameria parryi
                                              Ericameria parryi var. affinis
                                              Ericameria parryi var. aspra
                                              Ericameria parryi var. attenuata
                                                     [Chrysothamnus parryi ssp. attenuatus]
                                                     [Chrysothamnus parryi var. attenuatus]
                                              Ericameria parryi var. howardii
                                                     [Chrysothamnus howardii]
                                                     [Chrysothamnus parryi ssp. howardii]
                                                     [Chrysothamnus parryi var. howardii]
                                              Ericameria parryi var. imula
                                              Ericameria parryi var. latior
                                              Ericameria parryi var. monocephala
                                              Ericameria parryi var. montana
                                              Ericameria parryi var. nevadensis
                                                     [Chrysothamnus parryi ssp. nevadensis]
                                                     [Chrysothamnus parryi var. nevadensis]
                                              Ericameria parryi var. parryi
                                                     [Chrysothamnus parryi ssp. affinis]
                                                     [Chrysothamnus parryi ssp. asper]
                                                     [Chrysothamnus parryi ssp. imulus]
                                                     [Chrysothamnus parryi ssp. latior]
                                                     [Chrysothamnus parryi ssp. monocephalus]
                                                     [Chrysothamnus parryi ssp. montanus]
                                                     [Chrysothamnus parryi ssp. salmonensis]
                                                     [Chrysothamnus parryi ssp. typicus]
                                                     [Chrysothamnus parryi var. affinis]
                                                     [Chrysothamnus parryi var. asper]
                                                     [Chrysothamnus parryi var. monocephalus]
                                                     [Chrysothamnus parryi var. parryi]
                                                     [Chrysothamnus parryi]
                                              Ericameria parryi var. salmonensis
                                              Ericameria parryi var. vulcanica
                                                     [Chrysothamnus parryi ssp. vulcanicus]
                                                     [Chrysothamnus parryi var. vulcanicus]
                                              Ericameria parryi var. aspera
                                            Ericameria pinifolia
                                                   [Haplopappus pinifolius]
                                            Ericameria purpusii
                                            Ericameria resinosa
                                            Ericameria suffruticosa
                                                   [Haplopappus suffruticosus]
                                                   [Macronema suffruticosum]
                                            Ericameria teretifolia
                                                   [Chrysothamnus teretifolius]
                                            Ericameria watsonii
                                                   [Haplopappus watsonii]
                                                   [Macronema watsonii]
                                            Ericameria winwardii
                                            Ericameria x bolanderi
                                            Ericameria x uintahensis
                                            Ericameria x viscosa
                                            Ericameria zionis
                                                   [Haplopappus zionis]
                                    Ericentrodea
                                    Erigeron
                                            Erigeron abajoensis
                                            Erigeron acomanus
                                            Erigeron acris
                                              Erigeron acris ssp. debilis
                                              Erigeron acris ssp. decoloratus
                                              Erigeron acris ssp. droebachiensis
                                              Erigeron acris ssp. kamtschaticus
                                              Erigeron acris ssp. politus
                                              Erigeron acris var. asteroides
                                              Erigeron acris var. debilis
                                              Erigeron acris var. elatus
                                              Erigeron acris var. kamtschaticus
                                            Erigeron aequifolius
                                            Erigeron affinis
                                            Erigeron alamosanus
                                            Erigeron alaskanus
                                            Erigeron alcicornutus
                                            Erigeron algidus
                                            Erigeron aliceae
                                            Erigeron allocotus
                                            Erigeron alpiniformis
                                            Erigeron alpinus
                                              Erigeron alpinus ssp. intermedius
                                              Erigeron alpinus var. elatus
                                            Erigeron amplifolius
                                            Erigeron anchana
                                            Erigeron andersonii
                                            Erigeron angulosus
                                              Erigeron angulosus ssp. debilis
                                            Erigeron angustatus
                                            Erigeron annuus
                                                   [Erigeron annuus var. discoideus]
                                                   [Stenactis annua]
                                              Erigeron annuus ssp. strigosus
                                            Erigeron anodonta
                                            Erigeron aphanactis
                                              Erigeron aphanactis var. aphanactis
                                                     [Erigeron concinnus var. aphanactis]
                                              Erigeron aphanactis var. congestus
                                            Erigeron arenarioides
                                                   [Aster arenarioides]
                                            Erigeron arenarius
                                            Erigeron argentatus
                                            Erigeron arisolius
                                            Erigeron arizonicus
                                                   [Erigeron rusbyi]
                                            Erigeron asper
                                            Erigeron asperugineus
                                            Erigeron asperum
                                              Erigeron asperum var. pubescens
                                            Erigeron atticus
                                            Erigeron aurantiacus
                                            Erigeron aureus
                                              Erigeron aureus var. aureus
                                            Erigeron austinae
                                            Erigeron austiniae
                                            Erigeron awapensis
                                            Erigeron barbarensis
                                            Erigeron barbellulatus
                                            Erigeron basalticus
                                            Erigeron basaseachensis
                                            Erigeron basilobatus
                                            Erigeron bellidiastrum
                                              Erigeron bellidiastrum var. arenarius
                                              Erigeron bellidiastrum var. bellidiastrum
                                              Erigeron bellidiastrum var. robustus
                                            Erigeron bellidifolius
                                            Erigeron bellioides
                                            Erigeron bigelovii
                                            Erigeron bilboanus
                                            Erigeron biolettii
                                            Erigeron bistiensis
                                            Erigeron blepharophyllus
                                            Erigeron blochmaniae
                                            Erigeron bloomeri
                                              Erigeron bloomeri var. bloomeri
                                              Erigeron bloomeri var. nudatus
                                              Erigeron bloomeri var. pubens
                                              Erigeron bloomeri var. typicus
                                            Erigeron borealis
                                            Erigeron breweri
                                              Erigeron breweri var. bisanctus
                                              Erigeron breweri var. breweri
                                              Erigeron breweri var. covillei
                                              Erigeron breweri var. elmeri
                                              Erigeron breweri var. jacinteus
                                              Erigeron breweri var. klamathensis
                                              Erigeron breweri var. porphyreticus
                                            Erigeron byei
                                            Erigeron caespitosus
                                                   [Erigeron caespitosus var. laccoliticus]
                                              Erigeron caespitosus var. nauseosus
                                            Erigeron calcicola
                                            Erigeron californicus
                                            Erigeron calvus
                                            Erigeron canaani
                                            Erigeron candidus
                                            Erigeron canus
                                            Erigeron carringtoniae
                                            Erigeron cascadensis
                                            Erigeron caucasicus
                                              Erigeron caucasicus ssp. venustus
                                            Erigeron caulinifolius
                                            Erigeron cavernensis
                                            Erigeron cervinus
                                            Erigeron chiangii
                                              Erigeron chiangii var. lamprocaulis
                                            Erigeron chrysopsidis
                                              Erigeron chrysopsidis ssp. austinae
                                              Erigeron chrysopsidis var. austiniae
                                              Erigeron chrysopsidis var. brevifolius
                                              Erigeron chrysopsidis var. chrysopsidis
                                            Erigeron cinereus
                                            Erigeron clokeyi
                                              Erigeron clokeyi var. clokeyi
                                              Erigeron clokeyi var. pinzliae
                                            Erigeron compactus
                                            Erigeron compositus
                                                   [Erigeron compositus var. discoideus]
                                                   [Erigeron compositus var. glabratus]
                                                   [Erigeron compositus var. multifidus]
                                                   [Erigeron compositus var. typicus]
                                            Erigeron concinnus
                                              Erigeron concinnus var. concinnus
                                                     [Distasis concinna]
                                                     [Erigeron brandegeei]
                                                     [Erigeron pumilus ssp. concinnoides]
                                                     [Erigeron pumilus var. concinnus]
                                                     [Erigeron pumilus var. euconcinnoides]
                                              Erigeron concinnus var. condensatus
                                                     [Erigeron condensatus]
                                                     [Erigeron pumilus var. condensatus]
                                              Erigeron concinnus var. subglaber
                                                     [Erigeron perglaber]
                                                     [Erigeron pumilus var. subglaber]
                                            Erigeron congestus
                                            Erigeron consimilis
                                                   [Erigeron compactus var. consimilis]
                                            Erigeron conspicuus
                                            Erigeron copelandi
                                            Erigeron coronarius
                                            Erigeron coroniglandifer
                                            Erigeron corymbosus
                                            Erigeron coulteri
                                            Erigeron cronquistii
                                            Erigeron cuatrocienegensis
                                            Erigeron cuneifolius
                                            Erigeron davisii
                                            Erigeron debilis
                                            Erigeron decumbens
                                              Erigeron decumbens ssp. robustior
                                              Erigeron decumbens var. decumbens
                                              Erigeron decumbens var. robustior
                                            Erigeron delicatus
                                            Erigeron delphinifolius
                                              Erigeron delphinifolius ssp. neomexicanus
                                            Erigeron denalii
                                            Erigeron deustus
                                            Erigeron disparipilus
                                            Erigeron divergens
                                                   [Erigeron divergens var. typicus]
                                              Erigeron divergens var. divergens
                                            Erigeron droebachensis
                                            Erigeron dryophyllus
                                            Erigeron earlei
                                            Erigeron eatoni
                                            Erigeron eatonii
                                              Erigeron eatonii ssp. plantagineus
                                              Erigeron eatonii ssp. villosus
                                              Erigeron eatonii var. eatonii
                                                     [Erigeron eatonii ssp. typicus]
                                              Erigeron eatonii var. lavandulus
                                              Erigeron eatonii var. nevadincola
                                                     [Erigeron nevadincola]
                                              Erigeron eatonii var. plantagineus
                                              Erigeron eatonii var. sonnei
                                              Erigeron eatonii var. villosus
                                            Erigeron elatior
                                                   [Erigeron grandiflorus var. elatior]
                                            Erigeron elatus
                                              Erigeron elatus var. oligocephalus
                                            Erigeron elegantulus
                                            Erigeron elmeri
                                            Erigeron elongatus
                                            Erigeron engelmannii
                                              Erigeron engelmannii ssp. davisii
                                              Erigeron engelmannii ssp. typicus
                                              Erigeron engelmannii var. davisii
                                              Erigeron engelmannii var. engelmannii
                                            Erigeron eruptens
                                            Erigeron evermannii
                                            Erigeron eximius
                                                   [Erigeron superbus]
                                            Erigeron filifolius
                                              Erigeron filifolius var. filifolius
                                              Erigeron filifolius var. robustior
                                              Erigeron filifolius var. typicus
                                            Erigeron flabellifolius
                                            Erigeron flagellaris
                                                   [Erigeron flagellaris var. typicus]
                                                   [Erigeron nudiflorus]
                                              Erigeron flagellaris var. trilobatus
                                            Erigeron flettii
                                            Erigeron flexuosus
                                            Erigeron floribundus
                                            Erigeron foliosus
                                              Erigeron foliosus var. blochmaniae
                                              Erigeron foliosus var. confinis
                                              Erigeron foliosus var. covillei
                                              Erigeron foliosus var. foliosus
                                              Erigeron foliosus var. franciscensis
                                              Erigeron foliosus var. hartwegii
                                              Erigeron foliosus var. mendocinus
                                              Erigeron foliosus var. stenophyllus
                                            Erigeron formosissimus
                                              Erigeron formosissimus var. formosissimus
                                                     [Erigeron formosissimus var. typicus]
                                              Erigeron formosissimus var. viscidus
                                                     [Erigeron glabellus var. viscidus]
                                                     [Erigeron viscidus]
                                            Erigeron forreri
                                            Erigeron fragilis
                                            Erigeron fraternus
                                              Erigeron fraternus var. fraternus
                                            Erigeron fruticetorum
                                            Erigeron fundus
                                            Erigeron galeottii
                                            Erigeron garrettii
                                                   [Erigeron controversus]
                                            Erigeron gaudinii
                                            Erigeron geiseri
                                            Erigeron gilliesii
                                            Erigeron glabellus
                                              Erigeron glabellus ssp. pubescens
                                              Erigeron glabellus ssp. typicus
                                              Erigeron glabellus var. glabellus
                                              Erigeron glabellus var. mollis
                                              Erigeron glabellus var. pubescens
                                              Erigeron glabellus var. yukonensis
                                            Erigeron glabratus
                                            Erigeron glacialis
                                              Erigeron glacialis var. glacialis
                                              Erigeron glacialis var. hirsutus
                                            Erigeron glaucus
                                            Erigeron goodrichii
                                            Erigeron gracilis
                                            Erigeron grandiflorus
                                              Erigeron grandiflorus ssp. arcticus
                                              Erigeron grandiflorus ssp. grandiflorus
                                              Erigeron grandiflorus ssp. muirii
                                            Erigeron greenei
                                            Erigeron griseus
                                            Erigeron gypsophilus
                                            Erigeron hartwegi
                                            Erigeron heliographis
                                            Erigeron hessii
                                            Erigeron higginsii
                                            Erigeron howellii
                                            Erigeron huberi
                                            Erigeron hultenii
                                            Erigeron humilis
                                            Erigeron hyperboreus
                                            Erigeron hyssopifolius
                                              Erigeron hyssopifolius var. hyssopifolius
                                            Erigeron incanescens
                                            Erigeron inoptatus
                                            Erigeron inornatus
                                              Erigeron inornatus var. angustatus
                                              Erigeron inornatus var. biolettii
                                              Erigeron inornatus var. calidipetris
                                              Erigeron inornatus var. inornatus
                                              Erigeron inornatus var. keilii
                                              Erigeron inornatus var. reductus
                                              Erigeron inornatus var. viscidulus
                                            Erigeron jacinteus
                                            Erigeron jamaicensis
                                            Erigeron janivultus
                                            Erigeron jenkinsii
                                            Erigeron jonesii
                                            Erigeron jucundus
                                            Erigeron kachinensis
                                            Erigeron kamtschaticus
                                            Erigeron karvinskianus
                                            Erigeron klamathensis
                                            Erigeron kuschei
                                            Erigeron lackschewitzii
                                            Erigeron lanatus
                                            Erigeron lassenianus
                                              Erigeron lassenianus var. deficiens
                                              Erigeron lassenianus var. lassenianus
                                            Erigeron latus
                                            Erigeron leibergii
                                            Erigeron leiomerus
                                            Erigeron lemmonii
                                            Erigeron lepidopodus
                                            Erigeron linearis
                                                   [Erigeron peucephyllus]
                                              Erigeron linearis var. elegantulus
                                            Erigeron lobatus
                                            Erigeron lonchophyllus
                                                   [Erigeron lonchophyllus var. laurentianus]
                                                   [Erigeron minor]
                                                   [Trimorpha lonchophylla]
                                            Erigeron longipes
                                            Erigeron luteus
                                            Erigeron maguirei
                                              Erigeron maguirei var. harrisonii
                                            Erigeron mancus
                                            Erigeron maniopotamicus
                                            Erigeron mariposanus
                                            Erigeron maximus
                                            Erigeron mayoensis
                                            Erigeron melanocephalus
                                                   [Erigeron uniflorus var. melanocephalus]
                                            Erigeron mendocinus
                                            Erigeron metrius
                                            Erigeron mexiae
                                            Erigeron miser
                                            Erigeron modestus
                                                   [Erigeron lobatus var. warnockii]
                                                   [Erigeron plateauensis]
                                                   [Erigeron warnockii]
                                            Erigeron mohinorensis
                                            Erigeron mucronatum
                                            Erigeron mucronatus
                                            Erigeron muirii
                                            Erigeron multiceps
                                            Erigeron multiradiatus
                                            Erigeron myosotis
                                            Erigeron nanus
                                            Erigeron naudinii
                                            Erigeron nauseosus
                                            Erigeron nematophylloides
                                            Erigeron nematophyllus
                                            Erigeron neomexicanus
                                                   [Erigeron delphiniifolius ssp. neomexicanus]
                                                   [Erigeron delphiniifolius var. euneomexicanus]
                                            Erigeron nevadensis
                                              Erigeron nevadensis var. sonnei
                                            Erigeron nitens
                                            Erigeron nivalis
                                            Erigeron oblanceolatus
                                            Erigeron ochroleucus
                                              Erigeron ochroleucus var. ochroleucus
                                              Erigeron ochroleucus var. scribneri
                                            Erigeron oligodontus
                                            Erigeron oreganus
                                            Erigeron oreophilus
                                                   [Erigeron delphiniifolius var. oreophilus]
                                              Erigeron oreophilus var. dactyloides
                                            Erigeron orientalis
                                            Erigeron ovinus
                                            Erigeron oxyodontus
                                            Erigeron oxyphyllus
                                            Erigeron pallens
                                            Erigeron parishii
                                            Erigeron parryi
                                            Erigeron paucipetalus
                                            Erigeron peasei
                                            Erigeron pecosensis
                                            Erigeron peregrinus
                                              Erigeron peregrinus ssp. callianthemus
                                                     [Erigeron callianthemus]
                                                     [Erigeron peregrinus var. angustifolius]
                                                     [Erigeron peregrinus var. eucallianthemus]
                                                     [Erigeron peregrinus var. scaposus]
                                              Erigeron peregrinus ssp. peregrinus
                                              Erigeron peregrinus var. callianthemus
                                              Erigeron peregrinus var. hirsutus
                                              Erigeron peregrinus var. peregrinus
                                              Erigeron peregrinus var. thompsonii
                                            Erigeron petiolaris
                                            Erigeron petrophilus
                                              Erigeron petrophilus var. petrophilus
                                              Erigeron petrophilus var. sierrensis
                                              Erigeron petrophilus var. viscidulus
                                            Erigeron philadelphicus
                                              Erigeron philadelphicus ssp. provancheri
                                              Erigeron philadelphicus var. glaber
                                              Erigeron philadelphicus var. philadelphicus
                                              Erigeron philadelphicus var. provancheri
                                              Erigeron philadelphicus var. scaturicola
                                            Erigeron pinkavii
                                            Erigeron pinnatisectus
                                                   [Erigeron compositus var. pinnatisectus]
                                            Erigeron piperianus
                                            Erigeron piscaticus
                                            Erigeron podophyllus
                                            Erigeron poliospermus
                                              Erigeron poliospermus var. cereus
                                              Erigeron poliospermus var. disciformis
                                              Erigeron poliospermus var. poliospermus
                                              Erigeron poliospermus var. typicus
                                            Erigeron politus
                                            Erigeron polycephalus
                                            Erigeron polymorphus
                                            Erigeron porsildii
                                            Erigeron potosinus
                                            Erigeron pringlei
                                            Erigeron procumbens
                                                   [Aster procumbens]
                                                   [Erigeron myrionactis]
                                                   [Erigeron repens]
                                            Erigeron proselyticus
                                            Erigeron provancheri
                                            Erigeron pubescens
                                            Erigeron pulchellus
                                              Erigeron pulchellus var. brauniae
                                              Erigeron pulchellus var. pulchellus
                                              Erigeron pulchellus var. tolsteadii
                                            Erigeron pulcherrimus
                                                   [Erigeron pulcherrimus var. wyomingia]
                                                   [Erigeron wyomingia]
                                            Erigeron pulvinatus
                                            Erigeron pumilus
                                              Erigeron pumilus ssp. intermedius
                                                     [Erigeron pumilus var. euintermedius]
                                              Erigeron pumilus var. intermedius
                                              Erigeron pumilus var. pumilus
                                                     [Erigeron pumilus ssp. pumilus]
                                              Erigeron pumilus var. gracilior
                                            Erigeron purpuratus
                                              Erigeron purpuratus ssp. pallens
                                              Erigeron purpuratus var. purpuratus
                                            Erigeron purpureus
                                            Erigeron pygmaeus
                                            Erigeron quercifolius
                                            Erigeron quiexobrensis
                                            Erigeron radicatus
                                            Erigeron ramosus
                                            Erigeron reductus
                                              Erigeron reductus var. angustatus
                                              Erigeron reductus var. reductus
                                            Erigeron reinana
                                            Erigeron religiosus
                                            Erigeron rhizomactis
                                            Erigeron rhizomatus
                                            Erigeron robustior
                                            Erigeron roylei
                                            Erigeron rybius
                                            Erigeron rydbergii
                                            Erigeron salicinus
                                            Erigeron salishii
                                            Erigeron salmonensis
                                            Erigeron salsuginosus
                                              Erigeron salsuginosus var. angustifolius
                                            Erigeron sanctarum
                                            Erigeron saxatilis
                                            Erigeron scaposus
                                            Erigeron sceptrifer
                                            Erigeron scopulinus
                                            Erigeron scotteri
                                            Erigeron seemannii
                                            Erigeron serpentinus
                                            Erigeron simplex
                                            Erigeron simulans
                                            Erigeron sionis
                                              Erigeron sionis var. sionis
                                              Erigeron sionis var. trilobatus
                                            Erigeron sivinskii
                                            Erigeron smithii
                                            Erigeron socorrensis
                                            Erigeron sonnei
                                            Erigeron sparsifolius
                                            Erigeron speciosus
                                                   [Erigeron macranthus]
                                                   [Erigeron speciosus var. macranthus]
                                              Erigeron speciosus var. conspicuus
                                              Erigeron speciosus var. mollis
                                              Erigeron speciosus var. speciosus
                                              Erigeron speciosus var. typicus
                                              Erigeron speciosus var. uintahensis
                                            Erigeron stanfordii
                                            Erigeron stenophyllus
                                            Erigeron striatus
                                            Erigeron strigosus
                                              Erigeron strigosus ssp. septentrionalis
                                              Erigeron strigosus var. beyrichii
                                                     [Erigeron ramosus var. beyrichii]
                                              Erigeron strigosus var. calcicola
                                              Erigeron strigosus var. discoideus
                                              Erigeron strigosus var. dolomiticola
                                              Erigeron strigosus var. eligulatus
                                              Erigeron strigosus var. septentrionalis
                                              Erigeron strigosus var. strigosus
                                              Erigeron strigosus var. typicus
                                            Erigeron strigulosus
                                            Erigeron subglaber
                                            Erigeron subtrinervis
                                              Erigeron subtrinervis ssp. conspicuus
                                              Erigeron subtrinervis ssp. typicus
                                              Erigeron subtrinervis var. conspicuus
                                              Erigeron subtrinervis var. subtrinervis
                                            Erigeron supplex
                                            Erigeron tenellus
                                            Erigeron tener
                                            Erigeron tenuis
                                            Erigeron tephrodes
                                            Erigeron thunbergii
                                              Erigeron thunbergii ssp. glabratus
                                              Erigeron thunbergii var. glabratus
                                            Erigeron tracyi
                                                   [Erigeron colomexicanus]
                                                   [Erigeron divergens var. cinereus]
                                            Erigeron traversii
                                            Erigeron trifidus
                                            Erigeron tweediei
                                            Erigeron tweedyi
                                            Erigeron uintahensis
                                            Erigeron unalaschkensis
                                            Erigeron uncialis
                                              Erigeron uncialis ssp. conjugans
                                              Erigeron uncialis ssp. uncialis
                                              Erigeron uncialis var. conjugans
                                              Erigeron uncialis var. uncialis
                                            Erigeron unguiphyllus
                                            Erigeron uniflorus
                                              Erigeron uniflorus var. eriocephalus
                                                     [Erigeron uniflorus ssp. eriocephalus]
                                              Erigeron uniflorus var. unalaschkensis
                                            Erigeron untermannii
                                            Erigeron ursinus
                                              Erigeron ursinus var. ursinus
                                            Erigeron utahensis
                                              Erigeron utahensis var. sparsifolius
                                              Erigeron utahensis var. utahensis
                                                     [Erigeron utahensis var. tetrapleuris]
                                            Erigeron vagus
                                              Erigeron vagus var. madsenii
                                            Erigeron velutipes
                                            Erigeron venustus
                                            Erigeron vernus
                                            Erigeron versicolor
                                                   [Achaetogeron chihuahuensis]
                                                   [Achaetogeron versicolor]
                                                   [Erigeron geiseri var. calcicola]
                                                   [Erigeron gilensis]
                                                   [Erigeron mimegletes]
                                            Erigeron vetensis
                                                   [Erigeron glandulosus]
                                            Erigeron vicinus
                                            Erigeron villarsii
                                            Erigeron vreelandii
                                                   [Erigeron platyphyllus]
                                            Erigeron wahwahensis
                                            Erigeron watsonii
                                            Erigeron wilkenii
                                            Erigeron wislizeni
                                            Erigeron x arthurii
                                            Erigeron yukonensis
                                            Erigeron zothecinus
                                    Eriocarpum
                                            Eriocarpum coloradoense
                                            Eriocarpum megacephalum
                                            Eriocarpum serratum
                                            Eriocarpum stenolobum
                                    Eriophyllum
                                            Eriophyllum ambiguum
                                              Eriophyllum ambiguum var. ambiguum
                                              Eriophyllum ambiguum var. paleaceum
                                            Eriophyllum aureum
                                            Eriophyllum biternatum
                                            Eriophyllum bolanderi
                                            Eriophyllum brachylepis
                                            Eriophyllum caespitosum
                                            Eriophyllum cheiranthoides
                                            Eriophyllum chrysanthum
                                            Eriophyllum cineraria
                                            Eriophyllum confertiflorum
                                              Eriophyllum confertiflorum var. confertiflorum
                                              Eriophyllum confertiflorum var. discoideum
                                              Eriophyllum confertiflorum var. latum
                                              Eriophyllum confertiflorum var. laxiflorum
                                              Eriophyllum confertiflorum var. tanacetiflorum
                                              Eriophyllum confertiflorum var. tridactylum
                                              Eriophyllum confertiflorum var. trifidum
                                            Eriophyllum congdonii
                                            Eriophyllum croceum
                                            Eriophyllum gracile
                                            Eriophyllum greenei
                                            Eriophyllum jepsonii
                                            Eriophyllum lanatum
                                              Eriophyllum lanatum var. achillaeoides
                                              Eriophyllum lanatum var. achilleoides
                                              Eriophyllum lanatum var. achillioides
                                              Eriophyllum lanatum var. aphanactis
                                              Eriophyllum lanatum var. arachnoideum
                                              Eriophyllum lanatum var. croceum
                                              Eriophyllum lanatum var. cuneatum
                                              Eriophyllum lanatum var. grandiflorum
                                              Eriophyllum lanatum var. hallii
                                              Eriophyllum lanatum var. integrifolium
                                                     [Eriophyllum integrifolium]
                                                     [Eriophyllum lanatum var. monoense]
                                              Eriophyllum lanatum var. lanatum
                                              Eriophyllum lanatum var. lanceolatum
                                              Eriophyllum lanatum var. leucophyllum
                                              Eriophyllum lanatum var. obovatum
                                              Eriophyllum lanatum var. typicum
                                            Eriophyllum lanosum
                                                   [Antheropeas lanosum]
                                            Eriophyllum latilobum
                                            Eriophyllum lutescens
                                            Eriophyllum mohavense
                                            Eriophyllum multicaule
                                            Eriophyllum nevadense
                                            Eriophyllum nevinii
                                            Eriophyllum nubigenum
                                              Eriophyllum nubigenum var. congdonii
                                            Eriophyllum obovatum
                                            Eriophyllum paleaceum
                                            Eriophyllum pringlei
                                                   [Actinolepis nivea]
                                                   [Eriophyllum multicaule var. pringlei]
                                            Eriophyllum staechadifolium
                                              Eriophyllum staechadifolium var. depressum
                                            Eriophyllum stoechadifolium
                                              Eriophyllum stoechadifolium var. artemisiifolium
                                              Eriophyllum stoechadifolium var. depressum
                                            Eriophyllum tanacetiflorum
                                            Eriophyllum trichocarpum
                                            Eriophyllum tridactylum
                                            Eriophyllum wallacei
                                                   [Antheropeas wallacei]
                                                   [Bahia wallacei]
                                                   [Eriophyllum wallacei ssp. australe]
                                                   [Eriophyllum wallacei var. calvescens]
                                                   [Eriophyllum wallacei var. rubellum]
                                            Eriophyllum watsonii
                                    Erlangea
                                    Erythremia
                                    Eschenbachia
                                    Espejoa
                                    Espeletia
                                            Espeletia schultzii
                                    Ethulia
                                    Eucephalus
                                            Eucephalus bicolor
                                            Eucephalus breweri
                                            Eucephalus brickellioides
                                            Eucephalus covillei
                                            Eucephalus elegans
                                                   [Aster elegans]
                                                   [Aster perelegans]
                                                   [Eucephalus perelegans]
                                            Eucephalus engelmannii
                                            Eucephalus glabratus
                                            Eucephalus glandulosus
                                            Eucephalus glaucescens
                                            Eucephalus gormanii
                                            Eucephalus ledophyllus
                                              Eucephalus ledophyllus var. covillei
                                              Eucephalus ledophyllus var. ledophyllus
                                            Eucephalus paucicapitatus
                                            Eucephalus tomentellus
                                            Eucephalus vialis
                                    Euchiton
                                            Euchiton gymnocephalus
                                            Euchiton involucratus
                                            Euchiton japonicus
                                            Euchiton sphaericus
                                    Eupatoriadelphus
                                            Eupatoriadelphus dubius
                                            Eupatoriadelphus fistulosus
                                            Eupatoriadelphus maculatus
                                              Eupatoriadelphus maculatus var. foliosum
                                              Eupatoriadelphus maculatus var. maculatus
                                                     [Eupatorium maculatum var. maculatum]
                                                     [Eupatorium purpureum var. maculatum]
                                            Eupatoriadelphus purpureus
                                    Eupatoriastrum
                                            Eupatoriastrum triangulare
                                    Eupatorium
                                            Eupatorium ageratifolium
                                              Eupatorium ageratifolium var. herbaceum
                                            Eupatorium albicaule
                                              Eupatorium albicaule var. laxius
                                            Eupatorium album
                                              Eupatorium album var. album
                                              Eupatorium album var. glandulosum
                                              Eupatorium album var. monardifolium
                                              Eupatorium album var. subvenosum
                                              Eupatorium album var. vaseyi
                                            Eupatorium altissimum
                                                   [Eupatorium saltuense]
                                            Eupatorium amblyolepis
                                            Eupatorium amygdalinum
                                            Eupatorium anomalum
                                            Eupatorium apiculatum
                                            Eupatorium areolare
                                              Eupatorium areolare var. leiocarpum
                                            Eupatorium argutum
                                            Eupatorium aromaticum
                                              Eupatorium aromaticum var. incisum
                                            Eupatorium aschenbornianum
                                            Eupatorium azureum
                                            Eupatorium bertholdii
                                            Eupatorium betonicifolium
                                            Eupatorium billbergianum
                                            Eupatorium boreale
                                            Eupatorium borinquense
                                            Eupatorium brevipes
                                            Eupatorium buniifolium
                                            Eupatorium bupleurifolium
                                            Eupatorium calophyllum
                                            Eupatorium candolleanum
                                            Eupatorium cannabinum
                                            Eupatorium capillifolium
                                              Eupatorium capillifolium var. leptophyllum
                                            Eupatorium ceriferum
                                            Eupatorium chapmanii
                                            Eupatorium chiapense
                                            Eupatorium choricephalum
                                            Eupatorium christieanum
                                            Eupatorium chrysostyloides
                                            Eupatorium chrysostylum
                                            Eupatorium collinum
                                            Eupatorium collodes
                                            Eupatorium compositifolium
                                            Eupatorium cordatum
                                            Eupatorium cordigerum
                                            Eupatorium corymbosum
                                            Eupatorium coulteri
                                            Eupatorium crassirameum
                                            Eupatorium cuneatum
                                            Eupatorium cuneifolium
                                              Eupatorium cuneifolium var. semiserratum
                                            Eupatorium daleoides
                                            Eupatorium dasycarpum
                                            Eupatorium deltoideum
                                            Eupatorium dibollii
                                            Eupatorium dolicholepis
                                            Eupatorium donnell-smithii
                                            Eupatorium droserolepis
                                            Eupatorium dryophilum
                                            Eupatorium dubium
                                            Eupatorium erythropappum
                                            Eupatorium espinosarum
                                            Eupatorium eugenei
                                            Eupatorium falcatum
                                            Eupatorium fernaldii
                                            Eupatorium filicaule
                                            Eupatorium fistulosum
                                            Eupatorium flourensifolium
                                            Eupatorium frustratum
                                            Eupatorium galeottii
                                            Eupatorium geraniifolium
                                            Eupatorium glabratum
                                            Eupatorium glaucescens
                                            Eupatorium glechonophyllum
                                            Eupatorium godfreyanum
                                            Eupatorium gracilicaule
                                            Eupatorium haenkeanum
                                            Eupatorium hecatanthum
                                            Eupatorium holwayanum
                                            Eupatorium holzingeri
                                            Eupatorium hookerianum
                                            Eupatorium hospitale
                                            Eupatorium hyssopifolium
                                              Eupatorium hyssopifolium var. calcaratum
                                              Eupatorium hyssopifolium var. hyssopifolium
                                              Eupatorium hyssopifolium var. laciniatum
                                              Eupatorium hyssopifolium var. linearifolium
                                            Eupatorium hyssopinum
                                            Eupatorium iltisii
                                            Eupatorium incomptum
                                            Eupatorium iresinoides
                                            Eupatorium juncundum
                                            Eupatorium karwinskianum
                                            Eupatorium kleinioides
                                            Eupatorium koelliaefolium
                                            Eupatorium laevigatum
                                            Eupatorium lancifolium
                                            Eupatorium lanicaule
                                            Eupatorium lasiophthalmum
                                            Eupatorium latidens
                                            Eupatorium lecheifolium
                                            Eupatorium leptophyllum
                                            Eupatorium leucocephalum
                                            Eupatorium leucolepis
                                              Eupatorium leucolepis var. leucolepis
                                              Eupatorium leucolepis var. novae-angliae
                                              Eupatorium leucolepis var. novaeangliae
                                            Eupatorium ligustrinum
                                            Eupatorium linearifolium
                                            Eupatorium lobbii
                                            Eupatorium longipes
                                            Eupatorium lozanoanum
                                            Eupatorium luciae-brauniae
                                            Eupatorium lucidum
                                            Eupatorium macdougallii
                                            Eupatorium macrocephalum
                                            Eupatorium macrophyllum
                                            Eupatorium maculatum
                                              Eupatorium maculatum var. bruneri
                                                     [Eupatoriadelphus maculatus var. bruneri]
                                                     [Eupatorium bruneri]
                                                     [Eupatorium maculatum ssp. bruneri]
                                              Eupatorium maculatum var. foliosum
                                            Eupatorium mairetianum
                                            Eupatorium megaphyllum
                                            Eupatorium micranthum
                                            Eupatorium microstemon
                                            Eupatorium mikanioides
                                            Eupatorium mohrii
                                            Eupatorium monanthum
                                            Eupatorium morifolium
                                            Eupatorium multifidum
                                            Eupatorium nelsonii
                                            Eupatorium odoratum
                                            Eupatorium oligocephalum
                                            Eupatorium orbignyanum
                                            Eupatorium oreithales
                                            Eupatorium oresbium
                                            Eupatorium oteroi
                                            Eupatorium palmeri
                                              Eupatorium palmeri var. tonsum
                                            Eupatorium pansamalense
                                            Eupatorium pasadenense
                                            Eupatorium pazcuarense
                                            Eupatorium pectinatum
                                            Eupatorium pedunculosum
                                            Eupatorium peninsulare
                                              Eupatorium peninsulare var. peninsulare
                                            Eupatorium perfoliatum
                                              Eupatorium perfoliatum var. colpophilum
                                              Eupatorium perfoliatum var. cuneatum
                                              Eupatorium perfoliatum var. perfoliatum
                                              Eupatorium perfoliatum var. truncatum
                                            Eupatorium perornatum
                                            Eupatorium petaloideum
                                            Eupatorium petiolare
                                            Eupatorium petraeum
                                            Eupatorium pilosum
                                            Eupatorium pinabetense
                                            Eupatorium pittieri
                                            Eupatorium polyodon
                                            Eupatorium porriginosum
                                            Eupatorium portoricense
                                            Eupatorium pubescens
                                            Eupatorium pulchellum
                                            Eupatorium purpureum
                                              Eupatorium purpureum var. amoenum
                                              Eupatorium purpureum var. foliosum
                                              Eupatorium purpureum var. holzingeri
                                              Eupatorium purpureum var. purpureum
                                            Eupatorium purpusi
                                            Eupatorium purpusii
                                            Eupatorium rafaelense
                                            Eupatorium recurvans
                                            Eupatorium resinifluum
                                            Eupatorium resinosum
                                              Eupatorium resinosum var. kentuckiense
                                            Eupatorium rhomboideum
                                            Eupatorium riparium
                                            Eupatorium rivale
                                            Eupatorium rotundifolium
                                              Eupatorium rotundifolium ssp. ovatum
                                              Eupatorium rotundifolium var. cordigerum
                                              Eupatorium rotundifolium var. ovatum
                                              Eupatorium rotundifolium var. rotundifolium
                                              Eupatorium rotundifolium var. saundersii
                                              Eupatorium rotundifolium var. scabridum
                                            Eupatorium rubricaule
                                            Eupatorium rugosum
                                              Eupatorium rugosum var. angustata
                                              Eupatorium rugosum var. chlorolepis
                                              Eupatorium rugosum var. tomentellum
                                              Eupatorium rugosum var. villicaule
                                            Eupatorium saltillense
                                            Eupatorium salvia
                                            Eupatorium sanctopaulense
                                            Eupatorium scabrellum
                                            Eupatorium scabridum
                                            Eupatorium schaffneri
                                            Eupatorium scorodonioides
                                            Eupatorium selerianum
                                            Eupatorium semiserratum
                                              Eupatorium semiserratum var. lancifolium
                                            Eupatorium serotinum
                                              Eupatorium serotinum var. polyneuron
                                            Eupatorium serratum
                                            Eupatorium sessilifolium
                                              Eupatorium sessilifolium var. brittonianum
                                              Eupatorium sessilifolium var. sessilifolium
                                              Eupatorium sessilifolium var. vaseyi
                                            Eupatorium shastense
                                            Eupatorium sinuatum
                                            Eupatorium smithii
                                            Eupatorium solidaginoides
                                            Eupatorium sordidum
                                            Eupatorium sphenopodum
                                            Eupatorium spinaciaefolium
                                            Eupatorium squarroso-ramosum
                                            Eupatorium steelei
                                            Eupatorium strictum
                                            Eupatorium subhastatum
                                            Eupatorium subintegrum
                                            Eupatorium surutatoanum
                                            Eupatorium torreyanum
                                            Eupatorium tortifolium
                                            Eupatorium trifoliatum
                                              Eupatorium trifoliatum var. foliosum
                                            Eupatorium trinervium
                                            Eupatorium triplinerve
                                            Eupatorium tubiflorum
                                            Eupatorium tuerckheimii
                                            Eupatorium urticaefolium
                                            Eupatorium vaseyi
                                            Eupatorium venulosum
                                            Eupatorium verbenaefolium
                                            Eupatorium verbenifolium
                                            Eupatorium veronicifolium
                                            Eupatorium viburnoides
                                            Eupatorium villosum
                                            Eupatorium viscosissimum
                                            Eupatorium vitalbae
                                            Eupatorium x cordigerum
                                            Eupatorium x pinnatifidum
                                            Eupatorium x polyneuron
                                            Eupatorium x truncatum
                                            Eupatorium xestolepis
                                    Euphrosyne
                                            Euphrosyne partheniifolia
                                    Eurybia
                                            Eurybia avita
                                            Eurybia chapmanii
                                            Eurybia chlorolepis
                                            Eurybia compacta
                                            Eurybia conspicua
                                            Eurybia divaricata
                                                   [Aster claytonii]
                                                   [Aster flexilis]
                                            Eurybia eryngiifolia
                                            Eurybia furcata
                                            Eurybia glomerata
                                            Eurybia hemispherica
                                            Eurybia integrifolia
                                                   [Aster integrifolius]
                                            Eurybia jonesiae
                                            Eurybia macrophylla
                                                   [Aster ianthinus]
                                                   [Aster macrophyllus var. apricensis]
                                                   [Aster macrophyllus var. excelsior]
                                                   [Aster macrophyllus var. ianthinus]
                                                   [Aster macrophyllus var. pinguifolius]
                                                   [Aster macrophyllus var. sejunctus]
                                                   [Aster macrophyllus var. velutinus]
                                                   [Aster macrophyllus]
                                                   [Aster multiformis]
                                                   [Aster nobilis]
                                                   [Aster riciniatus]
                                                   [Aster roscidus]
                                                   [Aster violaris]
                                            Eurybia merita
                                            Eurybia mirabilis
                                            Eurybia paludosa
                                                   [Aster paludosus]
                                            Eurybia pulchra
                                                   [Aster glaucodes ssp. pulcher]
                                                   [Aster glaucodes var. pulcher]
                                            Eurybia pygmaea
                                            Eurybia radula
                                            Eurybia radulina
                                                   [Aster eliasii]
                                                   [Aster radulinus]
                                                   [Weberaster radulinus]
                                            Eurybia saxicastelli
                                            Eurybia saxicastellii
                                            Eurybia schreberi
                                            Eurybia sibirica
                                              Eurybia sibirica var. gigantea
                                            Eurybia spectabilis
                                            Eurybia spinulosa
                                            Eurybia surculosa
                                            Eurybia wasatchensis
                                                   [Aster glaucus var. wasatchensis]
                                                   [Aster wasatchensis var. pulcher]
                                                   [Aster wasatchensis]
                                            Eurybia x herveyi
                                    Euryops
                                            Euryops athanasiae
                                            Euryops chrysanthemoides
                                            Euryops multifidus
                                                   [Euryops subcarnosus ssp. vulgaris]
                                            Euryops pectinatus
                                            Euryops pedunculatus
                                    Eutetras
                                            Eutetras palmeri
                                    Euthamia
                                            Euthamia camporum
                                            Euthamia caroliniana
                                            Euthamia chrysothamnoides
                                            Euthamia floribunda
                                            Euthamia galetorum
                                            Euthamia glutinosa
                                            Euthamia graminifolia
                                              Euthamia graminifolia var. galetorum
                                              Euthamia graminifolia var. graminifolia
                                              Euthamia graminifolia var. hirtipes
                                              Euthamia graminifolia var. major
                                              Euthamia graminifolia var. nuttallii
                                            Euthamia gymnospermoides
                                            Euthamia hirtipes
                                            Euthamia leptocephala
                                                   [Solidago leptocephala]
                                            Euthamia media
                                            Euthamia microcephala
                                            Euthamia microphylla
                                            Euthamia minor
                                            Euthamia nuttallii
                                            Euthamia occidentalis
                                                   [Euthamia californica]
                                                   [Euthamia linearifolia]
                                                   [Solidago occidentalis]
                                            Euthamia pulverulenta
                                            Euthamia remota
                                            Euthamia tenuifolia
                                              Euthamia tenuifolia var. pycnocephala
                                              Euthamia tenuifolia var. tenuifolia
                                    Eutrochium
                                            Eutrochium dubium
                                            Eutrochium fistulosum
                                            Eutrochium maculatum
                                              Eutrochium maculatum var. bruneri
                                              Eutrochium maculatum var. foliosum
                                              Eutrochium maculatum var. maculatum
                                            Eutrochium purpureum
                                              Eutrochium purpureum var. holzingeri
                                              Eutrochium purpureum var. purpureum
                                            Eutrochium steelei
                                    Evax
                                            Evax caulescens
                                              Evax caulescens var. brevifolia
                                              Evax caulescens var. humilis
                                              Evax caulescens var. petiolata
                                            Evax involucrata
                                            Evax sparsiflora
                                              Evax sparsiflora var. brevifolia
                                    Facelis
                                            Facelis apiculata
                                            Facelis retusa
                                    Felicia
                                            Felicia amelloides
                                            Felicia amoena
                                            Felicia fruticosa
                                            Felicia uliginosa
                                    Ferreyranthus
                                    Ferreyrella
                                    Filaginella
                                    Filaginopsis
                                            Filaginopsis multicaulis
                                    Filago
                                            Filago arvensis
                                            Filago candida
                                            Filago germanica
                                            Filago minima
                                            Filago nivea
                                            Filago pyramidata
                                              Filago pyramidata var. pyramidata
                                            Filago verna
                                            Filago vulgaris
                                    Filifolium
                                            Filifolium sibiricum
                                    Fitchia
                                            Fitchia speciosa
                                    Flaveria
                                            Flaveria angustifolia
                                            Flaveria anomala
                                            Flaveria bidentis
                                            Flaveria brownii
                                            Flaveria campestris
                                            Flaveria chloraefolia
                                            Flaveria chlorifolia
                                            Flaveria cronquistii
                                            Flaveria floridana
                                            Flaveria latifolia
                                            Flaveria linearis
                                            Flaveria longifolia
                                            Flaveria mcdougallii
                                                   [Flaveria macdougalii]
                                                   [Flaveria macdougallii]
                                                   [Flaveria mcdougalii]
                                            Flaveria oppositifolia
                                            Flaveria palmeri
                                            Flaveria pringlei
                                            Flaveria ramosissima
                                            Flaveria robusta
                                            Flaveria sonorensis
                                            Flaveria trinervia
                                                   [Oedera trinervia]
                                    Fleischmannia
                                            Fleischmannia arguta
                                            Fleischmannia bohlmanniana
                                            Fleischmannia guatemalensis
                                            Fleischmannia imitans
                                            Fleischmannia incarnata
                                                   [Eupatorium incarnatum]
                                            Fleischmannia laxa
                                            Fleischmannia microstemon
                                            Fleischmannia pratensis
                                            Fleischmannia pycnocephala
                                                   [Eupatorium pycnocephalum]
                                            Fleischmannia sinclairii
                                            Fleischmannia sonorae
                                                   [Eupatorium sonorae]
                                            Fleischmannia trinervia
                                    Fleischmanniopsis
                                            Fleischmanniopsis leucocephala
                                    Florestina
                                            Florestina latifolia
                                            Florestina pedata
                                            Florestina platyphylla
                                            Florestina purpurea
                                            Florestina simplicifolia
                                            Florestina tripteris
                                                   [Palafoxia tripteris var. brevis]
                                                   [Palafoxia tripteris]
                                    Floscaldasia
                                    Flotovia
                                    Flourensia
                                            Flourensia cernua
                                            Flourensia glutinosa
                                            Flourensia ilicifolia
                                            Flourensia laurifolia
                                            Flourensia microphylla
                                            Flourensia monticola
                                            Flourensia pringlei
                                                   [Helianthella pringlei]
                                            Flourensia resinosa
                                            Flourensia retinophylla
                                            Flourensia solitaria
                                            Flourensia thurifera
                                    Flyriella
                                            Flyriella chrysostyla
                                            Flyriella parryi
                                                   [Brickellia shineri]
                                                   [Eupatorium parryi]
                                    Franseria
                                            Franseria acerifolia
                                            Franseria albicaulis
                                            Franseria arborescens
                                              Franseria bipinnatifida var. dubia
                                            Franseria bryantii
                                            Franseria camphorata
                                              Franseria camphorata var. leptophylla
                                            Franseria caudata
                                              Franseria chamissonis var. viscida
                                            Franseria flexuosa
                                            Franseria hispida
                                            Franseria incana
                                            Franseria linearis
                                            Franseria nivea
                                            Franseria palmeri
                                            Franseria villosa
                                    Fulcaldea
                                    Gaertneria
                                            Gaertneria linearis
                                    Gaillardia
                                                          Gaillardia X grandiflora
                                            Gaillardia acaulis
                                            Gaillardia aestivalis
                                              Gaillardia aestivalis var. aestivalis
                                                     [Gaillardia chrysantha]
                                                     [Gaillardia fastigiata]
                                                     [Gaillardia lanceolata var. fastigiata]
                                                     [Gaillardia lanceolata var. flavovirens]
                                                     [Gaillardia lanceolata]
                                                     [Gaillardia rigida]
                                                     [Gaillardia serotina]
                                              Gaillardia aestivalis var. flavovirens
                                              Gaillardia aestivalis var. winkleri
                                            Gaillardia amblyodon
                                            Gaillardia aristata
                                            Gaillardia arizonica
                                              Gaillardia arizonica var. arizonica
                                              Gaillardia arizonica var. pringlei
                                                     [Gaillardia pringlei]
                                            Gaillardia coahuilensis
                                                   [Gaillardia mexicana]
                                            Gaillardia comosa
                                            Gaillardia crassa
                                            Gaillardia crinita
                                            Gaillardia flava
                                            Gaillardia globosa
                                            Gaillardia grandiflora
                                            Gaillardia gypsophila
                                            Gaillardia henricksonii
                                            Gaillardia linearis
                                            Gaillardia lutea
                                              Gaillardia lutea var. winkleri
                                            Gaillardia megapotamica
                                            Gaillardia multiceps
                                              Gaillardia multiceps var. microcephala
                                              Gaillardia multiceps var. multiceps
                                            Gaillardia parryi
                                            Gaillardia picta
                                            Gaillardia pinnatifida
                                              Gaillardia pinnatifida var. linearis
                                              Gaillardia pinnatifida var. pinnatifida
                                                     [Gaillardia gracilis]
                                                     [Gaillardia mearnsii]
                                            Gaillardia powellii
                                            Gaillardia pulchella
                                              Gaillardia pulchella var. australis
                                              Gaillardia pulchella var. drummondii
                                              Gaillardia pulchella var. picta
                                              Gaillardia pulchella var. pulchella
                                                     [Gaillardia drummondii]
                                                     [Gaillardia neomexicana]
                                                     [Gaillardia villosa]
                                            Gaillardia spathulata
                                            Gaillardia straminea
                                            Gaillardia suavis
                                                   [Agassizia suavis]
                                                   [Gaillardia trinervata]
                                            Gaillardia turneri
                                    Galatella
                                            Galatella punctata
                                    Galeana
                                            Galeana pratensis
                                    Galinsoga
                                           [Adventina]
                                            Galinsoga durangensis
                                            Galinsoga filiformis
                                            Galinsoga hispida
                                            Galinsoga parviflora
                                                   [Galinsoga semicalva var. percalva]
                                                   [Galinsoga semicalva]
                                              Galinsoga parviflora var. parviflora
                                              Galinsoga parviflora var. semicalva
                                            Galinsoga quadriradiata
                                                   [Galinsoga aristulata]
                                                   [Galinsoga bicolorata]
                                                   [Galinsoga caracasana]
                                                   [Galinsoga ciliata]
                                            Galinsoga spellenbergii
                                            Galinsoga subdiscoidea
                                            Galinsoga triradiata
                                            Galinsoga urticifolia
                                    Gamochaeta
                                            Gamochaeta americana
                                                   [Gamochaeta spicata]
                                                   [Gnaphalium americanum]
                                                   [Gnaphalium purpureum var. americanum]
                                                   [Gnaphalium spicatum]
                                            Gamochaeta antillana
                                            Gamochaeta argyrinea
                                            Gamochaeta calviceps
                                                   [Gamochaeta falcata]
                                            Gamochaeta chionesthes
                                            Gamochaeta coarctata
                                            Gamochaeta pensylvanica
                                                   [Gnaphalium pensylvanicum]
                                                   [Gnaphalium peregrinum]
                                                   [Gnaphalium purpureum var. spathulatum]
                                                   [Gnaphalium spathulatum]
                                            Gamochaeta purpurea
                                                   [Gnaphalium purpureum]
                                            Gamochaeta rosacea
                                                   [Gnaphalium rosaceum]
                                            Gamochaeta simplicicaulis
                                            Gamochaeta sphacelata
                                                   [Gnaphalium sphacelatum]
                                            Gamochaeta sphacilata
                                            Gamochaeta stachydifolia
                                            Gamochaeta stagnalis
                                            Gamochaeta ustulata
                                    Garberia
                                            Garberia fruticosa
                                            Garberia heterophylla
                                    Garcibarrigoa
                                    Garcilassa
                                    Gazania
                                            Gazania heterochaeta
                                            Gazania krebsiana
                                            Gazania linearis
                                                   [Gorteria linearis]
                                            Gazania longiscapa
                                            Gazania rigens
                                                   [Gazania splendens]
                                    Geigeria
                                            Geigeria africana
                                    Geissolepis
                                            Geissolepis suaedaefolia
                                    Geraea
                                            Geraea canescens
                                              Geraea canescens var. canescens
                                              Geraea canescens var. paniculata
                                            Geraea viscida
                                    Gerbera
                                            Gerbera crocea
                                            Gerbera jamesonii
                                    Gifola
                                            Gifola germanica
                                    Glebionis
                                            Glebionis coronaria
                                                   [Glebionis coronarium]
                                            Glebionis segetum
                                                   [Chrysanthemum segetum]
                                    Glossogyne
                                            Glossogyne tenuifolia
                                    Glyptopleura
                                            Glyptopleura marginata
                                            Glyptopleura setulosa
                                    Gnaphaliothamnus
                                            Gnaphaliothamnus lavandulifolius
                                            Gnaphaliothamnus salicifolius
                                    Gnaphalium
                                            Gnaphalium albatum
                                            Gnaphalium alienum
                                            Gnaphalium arvense
                                            Gnaphalium beneolens
                                                   [Gnaphalium canescens ssp. beneolens]
                                            Gnaphalium bourgovii
                                            Gnaphalium brachypterum
                                            Gnaphalium chartaceum
                                            Gnaphalium cheiranthifolium
                                            Gnaphalium collinum
                                            Gnaphalium concinnum
                                            Gnaphalium conoideum
                                            Gnaphalium dioicum
                                            Gnaphalium domingense
                                            Gnaphalium ehrenbergianum
                                            Gnaphalium elegans
                                            Gnaphalium exilifolium
                                                   [Gnaphalium grayi]
                                            Gnaphalium germanicum
                                            Gnaphalium gymnocephalus
                                            Gnaphalium hawaiiense
                                            Gnaphalium helleri
                                              Gnaphalium helleri var. micradenium
                                            Gnaphalium hintoniorum
                                            Gnaphalium indicum
                                            Gnaphalium inornatum
                                            Gnaphalium japonicum
                                            Gnaphalium leucophyllum
                                            Gnaphalium liebmannii
                                            Gnaphalium microphyllum
                                            Gnaphalium norvegicum
                                            Gnaphalium obtusifolium
                                              Gnaphalium obtusifolium var. helleri
                                              Gnaphalium obtusifolium var. micradenium
                                              Gnaphalium obtusifolium var. praecox
                                              Gnaphalium obtusifolium var. saxicola
                                            Gnaphalium palustre
                                                   [Filaginella palustris]
                                            Gnaphalium philippi
                                            Gnaphalium polycaulon
                                            Gnaphalium polycephalum
                                            Gnaphalium portoricense
                                            Gnaphalium ramosissimum
                                            Gnaphalium salicifolium
                                            Gnaphalium sandwicensium
                                              Gnaphalium sandwicensium var. flagellare
                                              Gnaphalium sandwicensium var. hawaiiense
                                              Gnaphalium sandwicensium var. kilaueanum
                                              Gnaphalium sandwicensium var. lineatum
                                              Gnaphalium sandwicensium var. molokaiense
                                            Gnaphalium saxicola
                                            Gnaphalium schraderi
                                            Gnaphalium semiamplexicaule
                                            Gnaphalium semilanatum
                                            Gnaphalium sonorae
                                            Gnaphalium sphacilatum
                                            Gnaphalium supinum
                                            Gnaphalium sylvaticum
                                            Gnaphalium thermale
                                                   [Gnaphalium canescens ssp. thermale]
                                                   [Gnaphalium microcephalum ssp. thermale]
                                                   [Gnaphalium microcephalum var. thermale]
                                            Gnaphalium uliginosum
                                                   [Filaginella uliginosa]
                                            Gnaphalium ustulatum
                                                   [Gnaphalium purpureum var. ustulatum]
                                            Gnaphalium virgatum
                                            Pseudognaphalium oxyphyllum
                                                   [Gnaphalium oxyphyllum]
                                    Gochnatia
                                            Gochnatia arborescens
                                            Gochnatia arequipensis
                                            Gochnatia argentina
                                            Gochnatia argyrea
                                            Gochnatia fascicularis
                                            Gochnatia foliolosa
                                            Gochnatia glutinosa
                                            Gochnatia haumaniana
                                            Gochnatia hypoleuca
                                            Gochnatia obtusata
                                            Gochnatia paniculata
                                            Gochnatia polymorpha
                                            Gochnatia pulchra
                                    Goldmanella
                                            Goldmanella sarmentosa
                                    Gongrostylus
                                    Gonotheca
                                            Gonotheca helianthoides
                                    Gorteria
                                    Graphistylis
                                            Graphistylis oreophila
                                    Grazielia
                                            Grazielia serrata
                                    Greenella
                                            Greenella ramulosa
                                    Grindelia
                                            Grindelia acutifolia
                                            Grindelia adenodonta
                                            Grindelia arenicola
                                              Grindelia arenicola var. pachyphylla
                                            Grindelia arizonica
                                              Grindelia arizonica var. arizonica
                                                     [Grindelia arizonica var. dentata]
                                                     [Grindelia arizonica var. microphylla]
                                              Grindelia arizonica var. neomexicana
                                              Grindelia arizonica var. stenophylla
                                            Grindelia brachystephana
                                            Grindelia bracteosa
                                            Grindelia camporum
                                              Grindelia camporum var. bracteosa
                                              Grindelia camporum var. camporum
                                              Grindelia camporum var. parviflora
                                              Grindelia camporum var. australis
                                              Grindelia camporum var. davyi
                                            Grindelia chiloensis
                                            Grindelia ciliata
                                            Grindelia ciliatus
                                                   [Grindelia papposa]
                                                   [Haplopappus ciliatus]
                                                   [Prionopsis ciliata]
                                            Grindelia columbiana
                                            Grindelia decumbens
                                              Grindelia decumbens var. decumbens
                                              Grindelia decumbens var. subincisa
                                            Grindelia fastigiata
                                            Grindelia fraxinipratensis
                                            Grindelia fraxino-pratensis
                                            Grindelia fraxinopratensis
                                            Grindelia glutinosa
                                            Grindelia grandiflora
                                            Grindelia greenmanii
                                            Grindelia havardii
                                            Grindelia hintoniorum
                                            Grindelia hirsutula
                                              Grindelia hirsutula ssp. rubricaulis
                                              Grindelia hirsutula var. davyi
                                              Grindelia hirsutula var. hallii
                                                     [Grindelia hallii]
                                              Grindelia hirsutula var. hirsutula
                                              Grindelia hirsutula var. maritima
                                              Grindelia hirsutula var. subintegra
                                              Grindelia hirsutula var. brevisquama
                                            Grindelia howellii
                                            Grindelia humilis
                                            Grindelia inornata
                                              Grindelia inornata var. angusta
                                              Grindelia inornata var. inornata
                                            Grindelia integrifolia
                                              Grindelia integrifolia var. macrophylla
                                            Grindelia inuloides
                                              Grindelia inuloides var. glandulosa
                                            Grindelia laciniata
                                            Grindelia lanceolata
                                              Grindelia lanceolata var. lanceolata
                                              Grindelia lanceolata var. texana
                                            Grindelia latifolia
                                              Grindelia latifolia ssp. platyphylla
                                              Grindelia latifolia var. platyphylla
                                            Grindelia littoralis
                                            Grindelia maritima
                                            Grindelia microcephala
                                              Grindelia microcephala var. adenodonta
                                              Grindelia microcephala var. pusilla
                                            Grindelia nana
                                              Grindelia nana ssp. columbiana
                                              Grindelia nana var. discoidea
                                              Grindelia nana var. integerrima
                                              Grindelia nana var. integrifolia
                                              Grindelia nana var. nana
                                              Grindelia nana var. turbinella
                                            Grindelia neomexicana
                                            Grindelia nuda
                                              Grindelia nuda var. aphanactis
                                                     [Grindelia aphanactis]
                                              Grindelia nuda var. nuda
                                            Grindelia oolepis
                                            Grindelia oxylepis
                                              Grindelia oxylepis var. eligulata
                                            Grindelia pacifica
                                            Grindelia paludosa
                                            Grindelia paysonorum
                                            Grindelia procera
                                            Grindelia pulchella
                                            Grindelia pusilla
                                            Grindelia revoluta
                                            Grindelia robinsonii
                                            Grindelia robusta
                                              Grindelia robusta var. angustifolia
                                              Grindelia robusta var. bracteosa
                                              Grindelia robusta var. patens
                                            Grindelia rubricaulis
                                              Grindelia rubricaulis var. elata
                                            Grindelia scabra
                                              Grindelia scabra var. neomexicana
                                            Grindelia setulifera
                                            Grindelia squarrosa
                                              Grindelia squarrosa var. integrifolia
                                              Grindelia squarrosa var. nuda
                                              Grindelia squarrosa var. quasiperennis
                                                     [Grindelia perennis]
                                              Grindelia squarrosa var. serrulata
                                                     [Grindelia serrulata]
                                              Grindelia squarrosa var. squarrosa
                                            Grindelia stricta
                                              Grindelia stricta ssp. blakei
                                              Grindelia stricta ssp. venulosa
                                              Grindelia stricta var. angustifolia
                                              Grindelia stricta var. platyphylla
                                              Grindelia stricta var. stricta
                                            Grindelia subalpina
                                              Grindelia subalpina var. erecta
                                              Grindelia subalpina var. subalpina
                                            Grindelia subdecurrens
                                            Grindelia subincisa
                                            Grindelia tarapacana
                                            Grindelia tehuelches
                                            Grindelia texana
                                              Grindelia texana var. lanceolata
                                    Grosvenoria
                                    Guardiola
                                            Guardiola angustifolia
                                            Guardiola arguta
                                            Guardiola carinata
                                            Guardiola mexicana
                                            Guardiola pappifera
                                            Guardiola platyphylla
                                            Guardiola rosei
                                            Guardiola stenodonta
                                            Guardiola tulocarpus
                                              Guardiola tulocarpus var. arguta
                                    Guevaria
                                    Guizotia
                                            Guizotia abyssinica
                                    Gundelia
                                            Gundelia tournefortii
                                    Gundlachia
                                            Gundlachia corymbosa
                                            Gundlachia triantha
                                    Gutierrezia
                                            Gutierrezia alamani
                                            Gutierrezia alamanii
                                              Gutierrezia alamanii var. megalocephala
                                            Gutierrezia argyrocarpa
                                            Gutierrezia arizonica
                                                   [Greenella arizonica]
                                                   [Xanthocephalum arizonicum]
                                            Gutierrezia baccharoides
                                            Gutierrezia californica
                                                   [Gutierrezia bracteata]
                                            Gutierrezia conoidea
                                            Gutierrezia corymbosa
                                            Gutierrezia gilliesii
                                            Gutierrezia grandis
                                            Gutierrezia ionensis
                                            Gutierrezia juncea
                                            Gutierrezia longifolia
                                            Gutierrezia mandonii
                                            Gutierrezia megalocephala
                                            Gutierrezia microcephala
                                                   [Brachyris microcephala]
                                                   [Gutierrezia glomerella]
                                                   [Gutierrezia lucida]
                                                   [Gutierrezia sarothrae var. microcephala]
                                                   [Xanthocephalum lucidum]
                                                   [Xanthocephalum microcephalum]
                                            Gutierrezia petradoria
                                            Gutierrezia pomariensis
                                            Gutierrezia ramulosa
                                            Gutierrezia resinosa
                                            Gutierrezia sarothrae
                                                   [Gutierrezia divaricata]
                                                   [Gutierrezia diversifolia]
                                                   [Gutierrezia lepidota]
                                                   [Gutierrezia linearifolia]
                                                   [Gutierrezia linearis]
                                                   [Gutierrezia linoides]
                                                   [Gutierrezia longipappa]
                                                   [Gutierrezia sarothrae var. pomariensis]
                                                   [Gutierrezia tenuis]
                                                   [Solidago sarothrae]
                                                   [Xanthocephalum sarothrae var. pomariense]
                                                   [Xanthocephalum sarothrae]
                                                   [Xanthocephalum tenue]
                                            Gutierrezia scoparia
                                            Gutierrezia sericocarpa
                                            Gutierrezia serotina
                                                   [Gutierrezia polyantha]
                                            Gutierrezia solbrigii
                                            Gutierrezia spathulata
                                            Gutierrezia sphaerocephala
                                                   [Gutierrezia eriocarpa]
                                                   [Xanthocephalum sphaerocephalum var. eriocarpum]
                                                   [Xanthocephalum sphaerocephalum]
                                            Gutierrezia texana
                                              Gutierrezia texana var. glutinosa
                                                     [Gutierrezia glutinosa]
                                                     [Hemiachyris glutinosa]
                                              Gutierrezia texana var. texana
                                            Gutierrezia triflora
                                            Gutierrezia wrightii
                                                   [Greenella discoidea]
                                                   [Xanthocephalum wrightii]
                                    Gymnarrhena
                                            Gymnarrhena micrantha
                                    Gymnocoronis
                                            Gymnocoronis spilanthoides
                                    Gymnolaena
                                            Gymnolaena oaxacana
                                    Gymnolomia
                                            Gymnolomia brevifolia
                                            Gymnolomia ghiesbreghtii
                                            Gymnolomia hypochlora
                                            Gymnolomia linearis
                                            Gymnolomia nevadensis
                                            Gymnolomia parkinsonii
                                            Gymnolomia patens
                                              Gymnolomia patens var. abbreviata
                                            Gymnolomia triloba
                                    Gymnosperma
                                            Gymnosperma glutinosum
                                                   [Selloa glutinosa]
                                                   [Xanthocephalum glutinosum]
                                    Gymnostyles
                                            Gymnostyles anthemifolia
                                            Gymnostyles stolonifera
                                    Gynoxys
                                    Gynura
                                            Gynura aurantiaca
                                            Gynura sarmentosa
                                    Gypothamnium
                                    Gyptis
                                            Gyptis pinnatifida
                                    Halea
                                            Halea ludoviciana
                                    Hamulium
                                            Hamulium alatum
                                    Handelia
                                            Handelia trichophylla
                                    Haplocarpha
                                            Haplocarpha lyrata
                                    Haploesthes
                                            Haploesthes fruticosa
                                            Haploesthes greggii
                                              Haploesthes greggii var. texana
                                            Haploesthes robusta
                                    Haplopappus
                                            Haplopappus aberrans
                                            Haplopappus alpigenus
                                            Haplopappus alpinus
                                            Haplopappus anthylloides
                                            Haplopappus apargioides
                                            Haplopappus arenarius
                                              Haplopappus arenarius var. incisifolius
                                            Haplopappus aureus
                                            Haplopappus bellidifolius
                                            Haplopappus berberidis
                                            Haplopappus bloomeri
                                              Haplopappus bloomeri ssp. compactus
                                              Haplopappus bloomeri ssp. sonnei
                                              Haplopappus bloomeri var. angustatus
                                              Haplopappus bloomeri var. compactus
                                              Haplopappus bloomeri var. greenei
                                              Haplopappus bloomeri var. ophitidis
                                              Haplopappus bloomeri var. sonnei
                                            Haplopappus brandegeei
                                            Haplopappus brickellioides
                                            Haplopappus bustillosianus
                                            Haplopappus canescens
                                            Haplopappus canus
                                            Haplopappus carthamoides
                                              Haplopappus carthamoides ssp. rigidus
                                              Haplopappus carthamoides var. erythropappus
                                              Haplopappus carthamoides var. maximus
                                              Haplopappus carthamoides var. rigidus
                                              Haplopappus carthamoides var. subsquarrosus
                                              Haplopappus carthamoides var. typicus
                                            Haplopappus cerberoanus
                                            Haplopappus chrysanthemifolius
                                            Haplopappus clementis
                                            Haplopappus coloradoensis
                                            Haplopappus compactus
                                            Haplopappus croceus
                                              Haplopappus croceus ssp. typicus
                                            Haplopappus deserticola
                                            Haplopappus detonsus
                                            Haplopappus diplopappus
                                            Haplopappus donianus
                                            Haplopappus eastwoodiae
                                            Haplopappus engelmannii
                                            Haplopappus enormidens
                                            Haplopappus ericoides
                                              Haplopappus ericoides ssp. blakei
                                            Haplopappus eximius
                                              Haplopappus eximius ssp. peirsonii
                                            Haplopappus ferrisiae
                                            Haplopappus foliosus
                                            Haplopappus fremontii
                                              Haplopappus fremontii ssp. monocephalus
                                              Haplopappus fremontii ssp. typicus
                                              Haplopappus fremontii ssp. wardii
                                            Haplopappus gilmanii
                                            Haplopappus glutinosus
                                            Haplopappus greenei
                                              Haplopappus greenei var. mollis
                                            Haplopappus grindelioides
                                            Haplopappus hallii
                                            Haplopappus hirtus
                                              Haplopappus hirtus ssp. lanulosus
                                              Haplopappus hirtus ssp. sonchifolius
                                              Haplopappus hirtus ssp. typicus
                                              Haplopappus hirtus var. lanulosus
                                              Haplopappus hirtus var. sonchifolius
                                            Haplopappus illinitus
                                            Haplopappus insecticruris
                                            Haplopappus integerrimus
                                            Haplopappus integrifolius
                                              Haplopappus integrifolius ssp. insecticruris
                                              Haplopappus integrifolius ssp. liatriformis
                                              Haplopappus integrifolius ssp. scaberulus
                                              Haplopappus integrifolius ssp. typicus
                                            Haplopappus juarezensis
                                            Haplopappus lanceolatus
                                              Haplopappus lanceolatus ssp. solidagineus
                                              Haplopappus lanceolatus ssp. tenuicaulis
                                              Haplopappus lanceolatus ssp. vaseyi
                                              Haplopappus lanceolatus var. sublanatus
                                              Haplopappus lanceolatus var. tenuicaulis
                                              Haplopappus lanceolatus var. typicus
                                              Haplopappus lanceolatus var. vaseyi
                                            Haplopappus leverichii
                                            Haplopappus liatriformis
                                            Haplopappus lignumviridis
                                            Haplopappus longipes
                                            Haplopappus lucidus
                                            Haplopappus lyallii
                                            Haplopappus macraeanus
                                            Haplopappus macrocephalus
                                            Haplopappus macronema
                                              Haplopappus macronema var. canescens
                                              Haplopappus macronema var. linearis
                                              Haplopappus macronema var. typicus
                                            Haplopappus martirensis
                                            Haplopappus menziesii
                                            Haplopappus meyenii
                                            Haplopappus mucronatus
                                            Haplopappus multicaulis
                                            Haplopappus niveus
                                            Haplopappus occidentalis
                                            Haplopappus odontolepis
                                            Haplopappus ophitidis
                                            Haplopappus orcuttii
                                            Haplopappus palmeri
                                              Haplopappus palmeri ssp. pachylepis
                                            Haplopappus paniculatus
                                              Haplopappus paniculatus var. stenocephalus
                                            Haplopappus parishii
                                            Haplopappus parvifolius
                                            Haplopappus paucidentatus
                                            Haplopappus pectinatus
                                            Haplopappus pedunculosus
                                            Haplopappus peirsonii
                                            Haplopappus philippi
                                            Haplopappus phyllocephalus
                                              Haplopappus phyllocephalus var. megacephalus
                                            Haplopappus platylepis
                                            Haplopappus poeppigianus
                                            Haplopappus prunelloides
                                            Haplopappus pulchellus
                                            Haplopappus purpusii
                                            Haplopappus racemosus
                                              Haplopappus racemosus ssp. congestus
                                              Haplopappus racemosus ssp. liatriformis
                                              Haplopappus racemosus ssp. lucidus
                                              Haplopappus racemosus ssp. pinetorum
                                              Haplopappus racemosus var. praticola
                                            Haplopappus radiatus
                                            Haplopappus reicheanus
                                            Haplopappus remyanus
                                            Haplopappus rengifoanus
                                            Haplopappus resinosus
                                            Haplopappus reticulatus
                                            Haplopappus rigidifolius
                                            Haplopappus rosaricus
                                            Haplopappus rotundifolius
                                            Haplopappus rydbergii
                                                   [Haplopappus watsonii var. rydbergii]
                                            Haplopappus saxatilis
                                            Haplopappus scrobiculatus
                                            Haplopappus sericeus
                                            Haplopappus setiger
                                            Haplopappus squarrosus
                                              Haplopappus squarrosus ssp. obtusus
                                              Haplopappus squarrosus ssp. stenolepis
                                            Haplopappus stenophyllus
                                            Haplopappus stolpi
                                            Haplopappus subviscosus
                                            Haplopappus taeda
                                            Haplopappus tenuicaulis
                                            Haplopappus tenuilobus
                                            Haplopappus thiniicola
                                            Haplopappus traskae
                                            Haplopappus uncinatus
                                            Haplopappus validus
                                              Haplopappus validus ssp. graniticus
                                              Haplopappus validus ssp. torreyi
                                            Haplopappus velutinus
                                            Haplopappus vernicosus
                                            Haplopappus villanuevae
                                            Haplopappus wardii
                                            Haplopappus whitneyi
                                              Haplopappus whitneyi ssp. discoideus
                                    Harleya
                                            Harleya oxylepis
                                    Harmonia
                                           [Callineda]
                                            Harmonia doris-nilesiae
                                            Harmonia guggolziorum
                                            Harmonia hallii
                                            Harmonia nutans
                                            Harmonia stebbinsii
                                    Harpaecarpus
                                            Harpaecarpus minimus
                                    Hartwrightia
                                           [Macrostegia]
                                            Hartwrightia floridana
                                    Hasteola
                                            Hasteola robertiorum
                                            Hasteola suaveolens
                                    Hatschbachiella
                                            Hatschbachiella tweedieana
                                    Hazardia
                                            Hazardia berberidis
                                            Hazardia brickellioides
                                            Hazardia cana
                                            Hazardia detonsa
                                            Hazardia enormidens
                                            Hazardia ferrisiae
                                            Hazardia obtusa
                                            Hazardia odontolepis
                                            Hazardia orcuttii
                                            Hazardia rosarica
                                            Hazardia serrata
                                            Hazardia squarrosa
                                              Hazardia squarrosa var. grindelioides
                                                     [Haplopappus squarrosus ssp. grindelioides]
                                              Hazardia squarrosa var. obtusa
                                              Hazardia squarrosa var. squarrosa
                                            Hazardia squarrosus
                                            Hazardia stenolepis
                                            Hazardia vernicosa
                                            Hazardia whitneyi
                                              Hazardia whitneyi var. discoidea
                                              Hazardia whitneyi var. whitneyi
                                    Hebeclinium
                                           [Malacocarpus]
                                            Hebeclinium macrophyllum
                                    Hecastocleis
                                            Hecastocleis shockleyi
                                    Hedosyne
                                            Hedosyne ambrosiifolia
                                                   [Iva ambrosiaefolia]
                                                   [Iva ambrosiifolia ssp. lobata]
                                                   [Iva ambrosiifolia]
                                    Hedypnois
                                            Hedypnois cretica
                                    Heleastrum
                                            Heleastrum hemisphericum
                                    Heleniastrum
                                            Heleniastrum occidentale
                                    Helenium
                                            Helenium amarum
                                              Helenium amarum var. amarum
                                              Helenium amarum var. badium
                                                     [Helenium badium]
                                                     [Helenium tenuifolium var. badium]
                                            Helenium amphilobum
                                            Helenium apterum
                                            Helenium arizonicum
                                            Helenium autumnale
                                              Helenium autumnale var. autumnale
                                                     [Helenium autumnale var. canaliculatum]
                                                     [Helenium autumnale var. parviflorum]
                                                     [Helenium canaliculatum]
                                                     [Helenium latifolium]
                                                     [Helenium parviflorum]
                                              Helenium autumnale var. grandiflorum
                                              Helenium autumnale var. montanum
                                                     [Helenium montanum]
                                            Helenium bigelovii
                                                   [Helenium rivulare]
                                              Helenium bigelovii var. festivum
                                            Helenium bolanderi
                                            Helenium brevifolium
                                            Helenium campestre
                                            Helenium chihuahuensis
                                            Helenium curtisii
                                            Helenium decurrens
                                            Helenium donianum
                                            Helenium drummondii
                                            Helenium elegans
                                              Helenium elegans var. amphibolum
                                              Helenium elegans var. amphilobum
                                              Helenium elegans var. elegans
                                            Helenium flexuosum
                                                   [Helenium floridanum]
                                                   [Helenium godfreyi]
                                                   [Helenium nudiflorum]
                                            Helenium helenium
                                            Helenium incisum
                                            Helenium integrifolium
                                            Helenium laciniatum
                                            Helenium lanciniatum
                                            Helenium linifolium
                                            Helenium macranthum
                                            Helenium mexicanum
                                            Helenium microcephalum
                                              Helenium microcephalum var. microcephalum
                                              Helenium microcephalum var. ooclinium
                                                     [Helenium ooclinium]
                                            Helenium nuttallii
                                            Helenium pinnatifidum
                                            Helenium puberulum
                                            Helenium quadridentatum
                                            Helenium tenuifolium
                                            Helenium thurberi
                                            Helenium urmenetae
                                            Helenium vernale
                                            Helenium virginicum
                                            Helenium x polyphyllum
                                    Helianthella
                                            Helianthella californica
                                              Helianthella californica ssp. californica
                                              Helianthella californica ssp. nevadensis
                                              Helianthella californica ssp. shastensis
                                              Helianthella californica var. californica
                                              Helianthella californica var. nevadensis
                                              Helianthella californica var. shastensis
                                            Helianthella cannonae
                                            Helianthella castanea
                                            Helianthella ciliata
                                            Helianthella douglasii
                                            Helianthella durangensis
                                            Helianthella grandiflora
                                            Helianthella gypsophila
                                            Helianthella madrensis
                                            Helianthella majuscula
                                            Helianthella mexicana
                                            Helianthella microcephala
                                                   [Encelia microcephala]
                                            Helianthella multicaulis
                                            Helianthella nevadensis
                                            Helianthella parryi
                                            Helianthella quinquenervis
                                                   [Helianthus quinquenervis]
                                            Helianthella scabra
                                            Helianthella tenuifolia
                                            Helianthella uniflora
                                              Helianthella uniflora var. douglasii
                                              Helianthella uniflora var. uniflora
                                    Helianthopsis
                                    Helianthus
                                            Helianthus agrestis
                                            Helianthus alienus
                                            Helianthus angustifolius
                                                   [Helianthus angustifolius var. planifolius]
                                            Helianthus annuus
                                                   [Helianthus annuus ssp. jaegeri]
                                                   [Helianthus annuus ssp. lenticularis]
                                                   [Helianthus annuus ssp. texanus]
                                                   [Helianthus annuus var. lenticularis]
                                                   [Helianthus annuus var. macrocarpus]
                                                   [Helianthus annuus var. texanus]
                                                   [Helianthus aridus]
                                                   [Helianthus lenticularis]
                                            Helianthus anomalus
                                            Helianthus argophyllus
                                            Helianthus aristatus
                                            Helianthus arizonensis
                                            Helianthus atrorubens
                                              Helianthus atrorubens var. alsodes
                                              Helianthus atrorubens var. pubescens
                                            Helianthus bolanderi
                                            Helianthus borealis
                                            Helianthus californicus
                                            Helianthus carnosus
                                            Helianthus ciliaris
                                            Helianthus cinereus
                                              Helianthus cinereus var. sullivantii
                                            Helianthus cucumerifolius
                                            Helianthus cusickii
                                            Helianthus debilis
                                              Helianthus debilis ssp. cucumerifolius
                                              Helianthus debilis ssp. debilis
                                              Helianthus debilis ssp. hirtus
                                              Helianthus debilis ssp. praecox
                                              Helianthus debilis ssp. runyonii
                                              Helianthus debilis ssp. silvestris
                                              Helianthus debilis ssp. tardiflorus
                                              Helianthus debilis ssp. vestitus
                                              Helianthus debilis var. cucumerifolius
                                              Helianthus debilis var. silvestris
                                              Helianthus debilis var. tardiflorus
                                              Helianthus debilis var. vestitus
                                            Helianthus decapetalus
                                            Helianthus deserticola
                                            Helianthus divaricatus
                                              Helianthus divaricatus var. angustifolius
                                            Helianthus doronicoides
                                            Helianthus dowellianus
                                            Helianthus eggertii
                                            Helianthus exilis
                                            Helianthus filiformis
                                            Helianthus floridanus
                                            Helianthus formosus
                                            Helianthus giganteus
                                              Helianthus giganteus ssp. alienus
                                              Helianthus giganteus var. subtuberosus
                                            Helianthus glaucophyllus
                                            Helianthus gracilentus
                                            Helianthus grosseserratus
                                                   [Helianthus grosseserratus ssp. maximus]
                                                   [Helianthus grosseserratus var. hypoleucus]
                                                   [Helianthus instabilis]
                                            Helianthus heterophyllus
                                            Helianthus hirsutus
                                                   [Helianthus hirsutus var. stenophyllus]
                                                   [Helianthus hirsutus var. trachyphyllus]
                                                   [Helianthus stenophyllus]
                                            Helianthus invenustus
                                            Helianthus laciniatus
                                                   [Helianthus crenatus]
                                                   [Helianthus heiseri]
                                            Helianthus laetiflorus
                                              Helianthus laetiflorus var. rigidus
                                              Helianthus laetiflorus var. subrhomboideus
                                            Helianthus laevigatus
                                            Helianthus leptocaulis
                                            Helianthus longifolius
                                            Helianthus ludens
                                            Helianthus maximiliani
                                                   [Helianthus dalyi]
                                            Helianthus microcephalus
                                            Helianthus mollis
                                              Helianthus mollis var. cordatus
                                            Helianthus montanus
                                            Helianthus neglectus
                                            Helianthus niveus
                                              Helianthus niveus ssp. canescens
                                                     [Helianthus canescens]
                                                     [Helianthus canus]
                                                     [Helianthus petiolaris var. canescens]
                                              Helianthus niveus ssp. niveus
                                              Helianthus niveus ssp. tephrodes
                                                     [Helianthus tephrodes]
                                            Helianthus nuttallii
                                              Helianthus nuttallii ssp. nuttallii
                                                     [Helianthus fascicularis]
                                                     [Helianthus nuttallii ssp. canadensis]
                                                     [Helianthus nuttallii ssp. coloradensis]
                                              Helianthus nuttallii ssp. parishii
                                              Helianthus nuttallii ssp. rydbergii
                                              Helianthus nuttallii var. rydbergii
                                              Helianthus nuttallii var. subtuberosus
                                            Helianthus occidentalis
                                              Helianthus occidentalis ssp. occidentalis
                                              Helianthus occidentalis ssp. plantagineus
                                              Helianthus occidentalis var. dowellianus
                                              Helianthus occidentalis var. plantagineus
                                            Helianthus oliveri
                                            Helianthus orgyalis
                                            Helianthus paradoxus
                                            Helianthus parishii
                                            Helianthus pauciflorus
                                              Helianthus pauciflorus ssp. pauciflorus
                                              Helianthus pauciflorus ssp. subrhomboideus
                                              Helianthus pauciflorus var. subrhomboideus
                                            Helianthus petiolaris
                                              Helianthus petiolaris ssp. fallax
                                                     [Helianthus petiolaris var. fallax]
                                              Helianthus petiolaris ssp. petiolaris
                                              Helianthus petiolaris var. petiolaris
                                              Helianthus petiolaris var. phenax
                                            Helianthus pilosus
                                            Helianthus porteri
                                            Helianthus praecox
                                              Helianthus praecox ssp. hirtus
                                              Helianthus praecox ssp. praecox
                                              Helianthus praecox ssp. runyonii
                                              Helianthus praecox var. runyonii
                                            Helianthus praetermissus
                                            Helianthus pumilus
                                            Helianthus radula
                                            Helianthus reindutus
                                            Helianthus resinosus
                                            Helianthus rigidus
                                              Helianthus rigidus ssp. laetiflorus
                                              Helianthus rigidus ssp. subrhomboideus
                                              Helianthus rigidus var. subrhomboideus
                                            Helianthus rydbergii
                                            Helianthus salicifolius
                                            Helianthus saxicola
                                            Helianthus scaberrimus
                                            Helianthus schweinitzii
                                            Helianthus scrophulariifolius
                                            Helianthus silphioides
                                            Helianthus simulans
                                            Helianthus smithii
                                            Helianthus strumosus
                                            Helianthus subrhomboideus
                                            Helianthus subtuberosus
                                            Helianthus tracheliifolius
                                            Helianthus tuberosus
                                                   [Helianthus tomentosus]
                                                   [Helianthus tuberosus var. subcanescens]
                                            Helianthus uniflorus
                                            Helianthus validus
                                            Helianthus verticillatus
                                            Helianthus vestitus
                                            Helianthus x ambiguus
                                            Helianthus x brevifolius
                                            Helianthus x cinereus
                                            Helianthus x divariserratus
                                            Helianthus x doronicoides
                                            Helianthus x glaucus
                                            Helianthus x intermedius
                                            Helianthus x kellermanii
                                            Helianthus x laetiflorus
                                            Helianthus x luxurians
                                            Helianthus x multiflorus
                                            Helianthus x orgyaloides
                                            Helianthus x verticillatus
                                    Helichrysum
                                            Helichrysum angustifolium
                                            Helichrysum bracteatum
                                              Helichrysum bracteatum var. viscosum
                                            Helichrysum foetidum
                                            Helichrysum formosissimum
                                            Helichrysum fulgidum
                                            Helichrysum italicum
                                            Helichrysum petiolare
                                            Helichrysum petiolatum
                                            Helichrysum rubicundum
                                            Helichrysum scorpioides
                                            Helichrysum sesamoides
                                    Heliomeris
                                            Heliomeris hispidus
                                                   [Gymnolomia hispida var. ciliata]
                                                   [Gymnolomia hispida]
                                                   [Heliomeris ciliata]
                                                   [Heliomeris hispida]
                                                   [Viguiera ciliata]
                                            Heliomeris longifolia
                                                   [Viguiera longifolia]
                                              Heliomeris longifolia var. annua
                                                     [Heliomeris annua]
                                                     [Viguiera annua]
                                                     [Viguiera longifolia var. annua]
                                              Heliomeris longifolia var. longifolia
                                                     [Gymnolomia longifolia]
                                                     [Viguiera longifolia var. longifolia]
                                            Heliomeris multiflora
                                                   [Viguiera multiflora var. macrocephala]
                                                   [Viguiera multiflora]
                                              Heliomeris multiflora var. brevifolia
                                                     [Viguiera ovalis]
                                              Heliomeris multiflora var. hispida
                                              Heliomeris multiflora var. macrocephala
                                              Heliomeris multiflora var. multiflora
                                              Heliomeris multiflora var. nevadensis
                                                     [Viguiera multiflora var. nevadensis]
                                            Heliomeris porteri
                                            Heliomeris soliceps
                                            Heliomeris tenuifolia
                                    Heliopsis
                                            Heliopsis annua
                                            Heliopsis anomala
                                                   [Encelia anomala]
                                            Heliopsis buphthalmoides
                                            Heliopsis gracilis
                                                   [Heliopsis helianthoides var. gracilis]
                                            Heliopsis helianthoides
                                              Heliopsis helianthoides ssp. occidentalis
                                              Heliopsis helianthoides var. helianthoides
                                              Heliopsis helianthoides var. occidentalis
                                              Heliopsis helianthoides var. scabra
                                                     [Heliopsis helianthoides ssp. scabra]
                                                     [Heliopsis minor]
                                                     [Heliopsis scabra]
                                              Heliopsis helianthoides var. solidaginoides
                                            Heliopsis novogaliciana
                                            Heliopsis oppositifolia
                                            Heliopsis parvifolia
                                              Heliopsis parvifolia var. parvifolia
                                              Heliopsis parvifolia var. rubra
                                            Heliopsis procumbens
                                    Helipterum
                                            Helipterum eximium
                                            Helipterum roseum
                                            Helipterum speciosissimum
                                    Helminthotheca
                                            Helminthotheca echioides
                                    Helogyne
                                            Helogyne apaloidea
                                    Hemiachyris
                                            Hemiachyris texana
                                    Hemibaccharis
                                    Hemizonella
                                            Hemizonella minima
                                    Hemizonia
                                            Hemizonia angustifolia
                                              Hemizonia angustifolia var. barclayi
                                            Hemizonia arida
                                            Hemizonia calyculata
                                            Hemizonia clementina
                                            Hemizonia clevelandii
                                            Hemizonia congdonii
                                            Hemizonia congesta
                                              Hemizonia congesta ssp. calyculata
                                              Hemizonia congesta ssp. clevelandii
                                              Hemizonia congesta ssp. congesta
                                              Hemizonia congesta ssp. leucocephala
                                              Hemizonia congesta ssp. lutescens
                                              Hemizonia congesta ssp. luzulifolia
                                              Hemizonia congesta ssp. tracyi
                                              Hemizonia congesta ssp. vernalis
                                            Hemizonia conjugens
                                            Hemizonia corymbosa
                                              Hemizonia corymbosa ssp. corymbosa
                                              Hemizonia corymbosa ssp. macrocephala
                                            Hemizonia douglasii
                                            Hemizonia fitchii
                                            Hemizonia floribunda
                                            Hemizonia fremontii
                                            Hemizonia grandiflora
                                            Hemizonia greeneana
                                              Hemizonia greeneana ssp. peninsularis
                                            Hemizonia halliana
                                            Hemizonia hispida
                                            Hemizonia increscens
                                              Hemizonia increscens ssp. foliosa
                                              Hemizonia increscens ssp. increscens
                                              Hemizonia increscens ssp. villosa
                                            Hemizonia laevis
                                            Hemizonia leucocephala
                                            Hemizonia lobbii
                                              Hemizonia lobbii ssp. pentactis
                                            Hemizonia lutescens
                                            Hemizonia luzulaefolia
                                              Hemizonia luzulaefolia var. lutescens
                                            Hemizonia luzulifolia
                                              Hemizonia luzulifolia ssp. rudis
                                              Hemizonia luzulifolia ssp. tracyi
                                              Hemizonia luzulifolia var. lutescens
                                            Hemizonia macradenia
                                            Hemizonia martirensis
                                            Hemizonia minthornii
                                            Hemizonia mohavensis
                                            Hemizonia mollis
                                            Hemizonia multicaulis
                                              Hemizonia multicaulis ssp. vernalis
                                            Hemizonia multiglandulosa
                                              Hemizonia multiglandulosa var. sparsa
                                            Hemizonia obconica
                                            Hemizonia oppositifolia
                                            Hemizonia pallida
                                            Hemizonia palmeri
                                            Hemizonia pauciflora
                                            Hemizonia pentactis
                                            Hemizonia perennis
                                            Hemizonia pungens
                                              Hemizonia pungens ssp. laevis
                                              Hemizonia pungens ssp. maritima
                                              Hemizonia pungens ssp. pungens
                                              Hemizonia pungens ssp. septentrionalis
                                              Hemizonia pungens var. septentrionalis
                                            Hemizonia scabrella
                                            Hemizonia spicata
                                            Hemizonia streetsii
                                            Hemizonia tracyi
                                            Hemizonia truncata
                                            Hemizonia vernalis
                                            Hemizonia virgata
                                            Hemizonia wheeleri
                                    Henricksonia
                                            Henricksonia mexicana
                                    Herrickia
                                            Herrickia horrida
                                                   [Eurybia horrida]
                                            Herrickia kingii
                                              Herrickia kingii var. barnebyana
                                              Herrickia kingii var. kingii
                                            Herrickia wasatchensis
                                    Hertia
                                           [Ceratophytum]
                                            Hertia cheirifolia
                                    Hesperevax
                                            Hesperevax acaulis
                                                   [Evax acaulis]
                                              Hesperevax acaulis var. acaulis
                                              Hesperevax acaulis var. ambusticola
                                              Hesperevax acaulis var. robustior
                                            Hesperevax caulescens
                                            Hesperevax sparsiflora
                                              Hesperevax sparsiflora var. brevifolia
                                              Hesperevax sparsiflora var. sparsiflora
                                    Hesperodoria
                                            Hesperodoria hallii
                                    Hesperomannia
                                            Hesperomannia arborescens
                                              Hesperomannia arborescens var. bushiana
                                              Hesperomannia arborescens var. swezeyi
                                            Hesperomannia arbuscula
                                              Hesperomannia arbuscula ssp. oahuensis
                                              Hesperomannia arbuscula var. pearsallii
                                            Hesperomannia lydgatei
                                            Hesperomannia mauiensis
                                    Heteranthemis
                                            Heteranthemis viscidehirta
                                            Heteranthemis viscidihirta
                                    Heterocondylus
                                    Heterolepis
                                            Heterolepis aliena
                                    Heteropappus
                                            Heteropappus altaicus
                                    Heterosperma
                                            Heterosperma coreocarpoides
                                            Heterosperma pinnatum
                                            Heterosperma xanti
                                    Heterospermum
                                            Heterospermum pinnatum
                                    Heterothalamus
                                            Heterothalamus alienus
                                    Heterotheca
                                            Heterotheca adenolepis
                                            Heterotheca aspera
                                            Heterotheca barbata
                                            Heterotheca bolanderi
                                            Heterotheca brandegei
                                            Heterotheca breweri
                                            Heterotheca camphorata
                                            Heterotheca camporum
                                              Heterotheca camporum var. camporum
                                                     [Chrysopsis camporum var. glandulissimum]
                                                     [Chrysopsis camporum]
                                                     [Chrysopsis villosa var. camporum]
                                                     [Heterotheca villosa var. camporum]
                                              Heterotheca camporum var. glandulissima
                                              Heterotheca camporum var. glandulissimum
                                            Heterotheca canescens
                                                   [Chrysopsis berlandieri]
                                                   [Chrysopsis canescens]
                                                   [Chrysopsis villosa var. canescens]
                                            Heterotheca chihuahuana
                                            Heterotheca chrysopsidis
                                            Heterotheca correllii
                                            Heterotheca cruiseana
                                            Heterotheca depressa
                                            Heterotheca echioides
                                            Heterotheca falcata
                                            Heterotheca fastigiata
                                            Heterotheca flexuosa
                                            Heterotheca floridana
                                            Heterotheca fulcrata
                                              Heterotheca fulcrata var. amplifolia
                                                     [Chrysopsis amplifolia]
                                                     [Chrysopsis caudata]
                                                     [Chrysopsis nitidula]
                                              Heterotheca fulcrata var. arizonica
                                              Heterotheca fulcrata var. fulcrata
                                                     [Chrysopsis cryptocephala]
                                                     [Chrysopsis fulcrata]
                                                     [Chrysopsis resinolens]
                                              Heterotheca fulcrata var. senilis
                                                     [Chrysopsis senilis]
                                            Heterotheca graminifolia
                                              Heterotheca graminifolia var. tenuifolia
                                              Heterotheca graminifolia var. tracyi
                                            Heterotheca grandiflora
                                                   [Heterotheca floribunda]
                                            Heterotheca hyssopifolia
                                              Heterotheca hyssopifolia var. gigantea
                                              Heterotheca hyssopifolia var. subulata
                                            Heterotheca inuloides
                                              Heterotheca inuloides var. rosei
                                            Heterotheca jonesii
                                            Heterotheca latisquamea
                                            Heterotheca leptoglossa
                                            Heterotheca marginata
                                            Heterotheca mariana
                                              Heterotheca mariana ssp. floridana
                                              Heterotheca mariana var. macradenia
                                            Heterotheca martirensis
                                            Heterotheca mexicana
                                            Heterotheca microcephala
                                            Heterotheca monarchensis
                                            Heterotheca mucronata
                                              Heterotheca mucronata var. harmsiana
                                            Heterotheca nervosa
                                              Heterotheca nervosa var. microcephala
                                            Heterotheca oligantha
                                            Heterotheca oregona
                                              Heterotheca oregona var. compacta
                                              Heterotheca oregona var. oregona
                                              Heterotheca oregona var. rudis
                                              Heterotheca oregona var. scaberrima
                                            Heterotheca pinifolia
                                            Heterotheca pumila
                                            Heterotheca ruthii
                                            Heterotheca rutteri
                                                   [Chrysopsis rutteri]
                                            Heterotheca scabrella
                                            Heterotheca sessiliflora
                                              Heterotheca sessiliflora ssp. bolanderi
                                              Heterotheca sessiliflora ssp. echioides
                                              Heterotheca sessiliflora ssp. fastigiata
                                              Heterotheca sessiliflora ssp. sessiliflora
                                              Heterotheca sessiliflora var. thiniicola
                                              Heterotheca sessiliflora var. camphorata
                                              Heterotheca sessiliflora var. sanjacintensis
                                            Heterotheca shevockii
                                            Heterotheca stenophylla
                                              Heterotheca stenophylla var. angustifolia
                                              Heterotheca stenophylla var. stenophylla
                                            Heterotheca subaxillaris
                                                   [Chrysopsis scabra]
                                                   [Heterotheca lamarckii]
                                                   [Heterotheca latifolia var. arkansana]
                                                   [Heterotheca latifolia var. macgregoris]
                                                   [Heterotheca latifolia]
                                                   [Heterotheca psammophila]
                                                   [Heterotheca scabra]
                                                   [Heterotheca subaxillaris var. latifolia]
                                                   [Heterotheca subaxillaris var. petiolaris]
                                                   [Heterotheca subaxillaris var. procumbens]
                                                   [Heterotheca subaxillaris var. psammophila]
                                              Heterotheca subaxillaris ssp. latifolia
                                              Heterotheca subaxillaris ssp. subaxillaris
                                            Heterotheca subulata
                                            Heterotheca thiniicola
                                            Heterotheca vandevenderorum
                                            Heterotheca villosa
                                              Heterotheca villosa var. angustifolia
                                              Heterotheca villosa var. ballardii
                                              Heterotheca villosa var. depressa
                                              Heterotheca villosa var. foliosa
                                                     [Chrysopsis butleri]
                                                     [Chrysopsis foliosa]
                                                     [Chrysopsis hirsutissima]
                                                     [Chrysopsis imbricata]
                                                     [Chrysopsis villosa var. foliosa]
                                                     [Heterotheca foliosa]
                                              Heterotheca villosa var. minor
                                                     [Chrysopsis arida]
                                                     [Chrysopsis bakeri]
                                                     [Chrysopsis columbiana]
                                                     [Chrysopsis hispida]
                                                     [Chrysopsis villosa var. hispida]
                                                     [Chrysopsis wisconsinensis]
                                                     [Heterotheca villosa var. hispida]
                                                     [Heterotheca wisconsinensis]
                                              Heterotheca villosa var. nana
                                                     [Chrysopsis canescens var. nana]
                                                     [Chrysopsis horrida]
                                                     [Heterotheca horrida]
                                                     [Heterotheca villosa var. horrida]
                                              Heterotheca villosa var. pedunculata
                                                     [Chrysopsis pedunculata]
                                              Heterotheca villosa var. scabra
                                                     [Chrysopsis viscida ssp. cinerascens]
                                                     [Heterotheca horrida ssp. cinerascens]
                                              Heterotheca villosa var. shevockii
                                              Heterotheca villosa var. sierrablancensis
                                              Heterotheca villosa var. villosa
                                                     [Chrysopsis mollis]
                                                     [Chrysopsis villosa var. glomerata]
                                                     [Chrysopsis villosa var. minor]
                                                     [Chrysopsis villosa var. villosa]
                                                     [Chrysopsis villosa]
                                            Heterotheca viscida
                                                   [Chrysopsis villosa var. viscida]
                                                   [Chrysopsis viscida]
                                            Heterotheca zionensis
                                    Hidalgoa
                                            Hidalgoa ternata
                                    Hieracium
                                            Hieracium abscissum
                                            Hieracium acranthophorum
                                              Hieracium acranthophorum var. isortoquense
                                            Hieracium albertinum
                                            Hieracium albiflorum
                                                   [Chlorocrepis albiflora]
                                                   [Hieracium helleri]
                                                   [Hieracium siskiyouense]
                                            Hieracium alpinum
                                            Hieracium angmagssalikense
                                            Hieracium antarcticum
                                            Hieracium argutum
                                              Hieracium argutum var. parishii
                                            Hieracium argyraeum
                                            Hieracium atratum
                                            Hieracium aurantiacum
                                            Hieracium auricula
                                            Hieracium bifidum
                                            Hieracium bolanderi
                                            Hieracium brevipilum
                                                   [Hieracium fendleri var. mogollense]
                                            Hieracium caespitosum
                                                   [Hieracium pratense]
                                            Hieracium canadense
                                              Hieracium canadense var. canadense
                                              Hieracium canadense var. fasciculatum
                                              Hieracium canadense var. hirtirameum
                                              Hieracium canadense var. kalmii
                                              Hieracium canadense var. subintegrum
                                            Hieracium carneum
                                              Hieracium carneum var. chihuahuense
                                            Hieracium chapacanum
                                            Hieracium crepidispermum
                                                   [Hieracium lemmonii]
                                            Hieracium cusickii
                                            Hieracium cynoglossoides
                                              Hieracium cynoglossoides var. nudicaule
                                            Hieracium devoldii
                                            Hieracium diaphanum
                                            Hieracium dysonymum
                                            Hieracium eugenii
                                            Hieracium fendleri
                                              Hieracium fendleri ssp. fendleri
                                              Hieracium fendleri var. discolor
                                              Hieracium fendleri var. fendleri
                                                     [Chlorocrepis fendleri]
                                              Hieracium fendleri var. ostreophyllum
                                            Hieracium flagellare
                                              Hieracium flagellare ssp. cernuiforme
                                              Hieracium flagellare ssp. glatzense
                                            Hieracium flettii
                                            Hieracium glomeratum
                                            Hieracium gracile
                                              Hieracium gracile var. alaskanum
                                              Hieracium gracile var. densifloccosum
                                              Hieracium gracile var. detonsum
                                              Hieracium gracile var. gracile
                                              Hieracium gracile var. yukonense
                                            Hieracium greenei
                                            Hieracium greenii
                                            Hieracium grinnellii
                                            Hieracium gronovii
                                                   [Hieracium gronovii var. foliosum]
                                            Hieracium horridum
                                            Hieracium kalmii
                                              Hieracium kalmii var. canadense
                                              Hieracium kalmii var. fasciculatum
                                              Hieracium kalmii var. kalmii
                                              Hieracium kalmii var. subintegrum
                                            Hieracium lactucella
                                            Hieracium laevigatum
                                            Hieracium lawsonii
                                            Hieracium longiberbe
                                            Hieracium longipilum
                                            Hieracium maculatum
                                            Hieracium marianum
                                            Hieracium megacephalon
                                            Hieracium megacephalum
                                            Hieracium murorum
                                            Hieracium musartutense
                                            Hieracium nepiocratum
                                            Hieracium nudicaule
                                            Hieracium occidentale
                                            Hieracium paniculatum
                                            Hieracium parryi
                                            Hieracium pennsylvanicum
                                            Hieracium pilosella
                                              Hieracium pilosella var. niveum
                                              Hieracium pilosella var. pilosella
                                            Hieracium piloselloides
                                                   [Hieracium florentinum]
                                            Hieracium praealtum
                                              Hieracium praealtum var. decipiens
                                              Hieracium praealtum var. praealtum
                                            Hieracium prenanthoides
                                            Hieracium pringlei
                                            Hieracium prionobium
                                            Hieracium prionophilum
                                            Hieracium rigorosum
                                              Hieracium rigorosum var. nanusekense
                                              Hieracium rigorosum var. sermilikense
                                              Hieracium rigorosum var. unanakense
                                            Hieracium robinsonii
                                            Hieracium rusbyi
                                            Hieracium sabaudum
                                            Hieracium scabriusculum
                                              Hieracium scabriusculum var. columbianum
                                              Hieracium scabriusculum var. perhirsutum
                                              Hieracium scabriusculum var. saximontanum
                                              Hieracium scabriusculum var. scabrum
                                            Hieracium scabrum
                                              Hieracium scabrum var. intonsum
                                              Hieracium scabrum var. scabrum
                                              Hieracium scabrum var. tonsum
                                            Hieracium schultzii
                                            Hieracium scouleri
                                              Hieracium scouleri var. albertinum
                                              Hieracium scouleri var. griseum
                                              Hieracium scouleri var. nudicaule
                                              Hieracium scouleri var. scouleri
                                            Hieracium scribneri
                                            Hieracium stiptocaule
                                            Hieracium traillii
                                            Hieracium tridentatum
                                            Hieracium triste
                                              Hieracium triste ssp. gracile
                                              Hieracium triste var. fulvum
                                              Hieracium triste var. gracile
                                              Hieracium triste var. triste
                                              Hieracium triste var. tritiforme
                                            Hieracium umbellatum
                                              Hieracium umbellatum var. canadense
                                              Hieracium umbellatum var. scabriusculum
                                            Hieracium ungavense
                                            Hieracium vagum
                                            Hieracium venosum
                                              Hieracium venosum var. nudicaule
                                            Hieracium vulgatum
                                                   [Hieracium lachenalii]
                                            Hieracium wrightii
                                            Hieracium x alleghaniense
                                            Hieracium x atramentarium
                                            Hieracium x brachiatum
                                            Hieracium x dorei
                                            Hieracium x duplex
                                            Hieracium x fassettii
                                              Hieracium x fassettii var. fassettii
                                              Hieracium x fassettii var. mendicum
                                              Hieracium x fassettii var. wisconsinense
                                            Hieracium x fernaldii
                                            Hieracium x flagellare
                                              Hieracium x flagellare var. cernuiforme
                                              Hieracium x flagellare var. flagellare
                                              Hieracium x flagellare var. glatzense
                                            Hieracium x floribundum
                                            Hieracium x fuscatrum
                                            Hieracium x grohii
                                              Hieracium x grohii var. farwellii
                                              Hieracium x grohii var. grohii
                                            Hieracium x macrostolonum
                                            Hieracium x marianum
                                            Hieracium x scribneri
                                    Hippia
                                    Hoehnephytum
                                            Hoehnephytum imbricatum
                                    Hofmeisteria
                                           [Cuspidaria]
                                            Hofmeisteria anomalochaeta
                                            Hofmeisteria crassifolia
                                            Hofmeisteria dissecta
                                            Hofmeisteria fasciculata
                                              Hofmeisteria fasciculata var. fasciculata
                                              Hofmeisteria fasciculata var. pubescens
                                              Hofmeisteria fasciculata var. xantii
                                            Hofmeisteria filifolia
                                            Hofmeisteria gayleana
                                            Hofmeisteria gentryi
                                            Hofmeisteria malvaefolia
                                            Hofmeisteria sinaloensis
                                            Hofmeisteria standleyi
                                            Hofmeisteria urenifolia
                                    Holocarpha
                                            Holocarpha heermannii
                                            Holocarpha macradenia
                                            Holocarpha obconica
                                              Holocarpha obconica ssp. autumnalis
                                              Holocarpha obconica ssp. obconica
                                            Holocarpha virgata
                                              Holocarpha virgata ssp. elongata
                                              Holocarpha virgata ssp. virgata
                                    Holozonia
                                            Holozonia filipes
                                    Hughesia
                                    Hulsea
                                            Hulsea algida
                                            Hulsea brevifolia
                                            Hulsea caespitosa
                                            Hulsea californica
                                            Hulsea callicarpha
                                            Hulsea carnosa
                                            Hulsea heterochroma
                                            Hulsea larsenii
                                            Hulsea mexicana
                                            Hulsea nana
                                              Hulsea nana var. larsenii
                                            Hulsea nevadensis
                                            Hulsea vestita
                                              Hulsea vestita ssp. callicarpha
                                              Hulsea vestita ssp. gabrielensis
                                              Hulsea vestita ssp. inyoensis
                                                     [Hulsea californica ssp. inyoensis]
                                                     [Hulsea inyoensis]
                                              Hulsea vestita ssp. parryi
                                                     [Hulsea parryi]
                                              Hulsea vestita ssp. pygmaea
                                              Hulsea vestita ssp. vestita
                                              Hulsea vestita var. callicarpha
                                              Hulsea vestita var. pygmaea
                                            Hulsea volcanica
                                    Hulteniella
                                            Hulteniella integrifolia
                                    Hyalis
                                            Hyalis argentea
                                    Hyaloseris
                                    Hybridella
                                            Hybridella globosa
                                              Hybridella globosa var. myriophylla
                                    Hydropectis
                                            Hydropectis aquatica
                                            Hydropectis estradii
                                            Hydropectis stevensii
                                    Hymenatherum
                                            Hymenatherum acerosum
                                            Hymenatherum concinnum
                                            Hymenatherum greggii
                                            Hymenatherum hartwegi
                                            Hymenatherum tagetoides
                                            Hymenatherum treculii
                                    Hymenoclea
                                            Hymenoclea sandersonii
                                    Hymenolepis
                                            Hymenolepis parviflora
                                    Hymenopappus
                                            Hymenopappus artemisiaefolius
                                            Hymenopappus artemisiifolius
                                              Hymenopappus artemisiifolius var. artemisiifolius
                                              Hymenopappus artemisiifolius var. riograndensis
                                            Hymenopappus biennis
                                            Hymenopappus carolinensis
                                            Hymenopappus carrizoanus
                                            Hymenopappus corymbosus
                                            Hymenopappus filifolius
                                              Hymenopappus filifolius var. alpestris
                                              Hymenopappus filifolius var. cinereus
                                                     [Hymenopappus arenosus]
                                                     [Hymenopappus cinereus]
                                              Hymenopappus filifolius var. eriopodus
                                                     [Hymenopappus eriopodus]
                                              Hymenopappus filifolius var. filifolius
                                              Hymenopappus filifolius var. idahoensis
                                              Hymenopappus filifolius var. lugens
                                                     [Hymenopappus gloriosus]
                                                     [Hymenopappus lugens]
                                              Hymenopappus filifolius var. luteus
                                                     [Hymenopappus luteus]
                                              Hymenopappus filifolius var. megacephalus
                                              Hymenopappus filifolius var. nanus
                                              Hymenopappus filifolius var. nudipes
                                              Hymenopappus filifolius var. parvulus
                                              Hymenopappus filifolius var. pauciflorus
                                                     [Hymenopappus pauciflorus]
                                              Hymenopappus filifolius var. polycephalus
                                              Hymenopappus filifolius var. tomentosus
                                            Hymenopappus flavescens
                                              Hymenopappus flavescens var. cano-tomentosus
                                              Hymenopappus flavescens var. canotomentosus
                                                     [Hymenopappus robustus]
                                              Hymenopappus flavescens var. flavescens
                                            Hymenopappus flavomarginatus
                                            Hymenopappus mexicanus
                                            Hymenopappus nanus
                                            Hymenopappus newberryi
                                                   [Leucampyx newberryi]
                                            Hymenopappus niveus
                                            Hymenopappus nudatus
                                            Hymenopappus obtusifolius
                                            Hymenopappus ochroleucus
                                            Hymenopappus parvulus
                                            Hymenopappus petaloideus
                                            Hymenopappus polycephalus
                                            Hymenopappus radiata
                                            Hymenopappus radiatus
                                            Hymenopappus scabiosaeus
                                              Hymenopappus scabiosaeus var. artemisiifolius
                                              Hymenopappus scabiosaeus var. corymbosus
                                              Hymenopappus scabiosaeus var. riograndensis
                                              Hymenopappus scabiosaeus var. scabiosaeus
                                            Hymenopappus scaposus
                                            Hymenopappus tenuifolius
                                            Hymenopappus tomentosus
                                    Hymenostephium
                                            Hymenostephium cordatum
                                            Hymenostephium guatemalense
                                            Hymenostephium microcephalum
                                    Hymenothrix
                                            Hymenothrix glandulosa
                                            Hymenothrix loomisii
                                            Hymenothrix palmeri
                                            Hymenothrix wislizeni
                                            Hymenothrix wrightii
                                    Hymenoxys
                                            Hymenoxys ambigens
                                                   [Plummera ambigens]
                                              Hymenoxys ambigens var. ambigens
                                              Hymenoxys ambigens var. floribunda
                                              Hymenoxys ambigens var. neomexicana
                                              Hymenoxys ambigens var. wagneri
                                            Hymenoxys anthemoides
                                            Hymenoxys biennis
                                            Hymenoxys bigelovii
                                                   [Actinella bigelovii]
                                                   [Macdougalia bigelovii]
                                            Hymenoxys brachyactis
                                            Hymenoxys brandegeei
                                                   [Actinella grandiflora var. glabrata]
                                                   [Rydbergia brandegeei]
                                                   [Tetraneuris brandegeei]
                                            Hymenoxys brandegei
                                            Hymenoxys chrysanthemoides
                                              Hymenoxys chrysanthemoides var. excurrens
                                              Hymenoxys chrysanthemoides var. juxta
                                            Hymenoxys cooperi
                                              Hymenoxys cooperi var. canescens
                                                     [Actinea canescens]
                                              Hymenoxys cooperi var. cooperi
                                                     [Actinea cooperi]
                                            Hymenoxys floribunda
                                              Hymenoxys floribunda var. arizonica
                                              Hymenoxys floribunda var. intermedia
                                            Hymenoxys grandiflora
                                                   [Actinella grandiflora]
                                                   [Tetraneuris grandiflora]
                                            Hymenoxys helenioides
                                                   [Picradenia helenioides]
                                            Hymenoxys hoopesii
                                                   [Dugaldia hoopesii]
                                                   [Helenium hoopesii]
                                            Hymenoxys insignis
                                            Hymenoxys jamesii
                                            Hymenoxys lapidicola
                                            Hymenoxys lemmonii
                                            Hymenoxys microcephala
                                                   [Plummera floribunda]
                                            Hymenoxys odorata
                                                   [Actinella odorata]
                                                   [Picradenia odorata]
                                            Hymenoxys quinquesquamata
                                            Hymenoxys richardsonii
                                                   [Actinella richardsonii]
                                              Hymenoxys richardsonii var. floribunda
                                                     [Actinella richardsonii var. floribunda]
                                                     [Hymenoxys olivacea]
                                                     [Hymenoxys richardsonii var. utahensis]
                                                     [Picradenia richardsonii var. floribunda]
                                              Hymenoxys richardsonii var. richardsonii
                                            Hymenoxys rusbyi
                                                   [Actinella rusbyi]
                                            Hymenoxys subintegra
                                            Hymenoxys texana
                                            Hymenoxys vaseyi
                                                   [Actinea vaseyi]
                                                   [Actinella vaseyi]
                                    Hyoseris
                                            Hyoseris minima
                                            Hyoseris virginica
                                    Hypochaeris
                                           [Hypochoeris]
                                            Hypochaeris alba
                                            Hypochaeris brasiliensis
                                              Hypochaeris brasiliensis var. tweediei
                                              Hypochaeris brasiliensis var. tweedyi
                                            Hypochaeris chilensis
                                            Hypochaeris chillensis
                                            Hypochaeris glabra
                                            Hypochaeris incana
                                            Hypochaeris lutea
                                            Hypochaeris microcephala
                                              Hypochaeris microcephala var. albiflora
                                              Hypochaeris microcephala var. microcephala
                                            Hypochaeris radicata
                                            Hypochaeris tweediei
                                            Hypochaeris tweedyi
                                    Hysterionica
                                            Hysterionica bakeri
                                            Hysterionica filiformis
                                    Ichthyothere
                                    Idiopappus
                                    Idiothamnus
                                    Ifloga
                                            Ifloga spicata
                                    Iltisia
                                    Inula
                                            Inula alba
                                            Inula britannica
                                            Inula brittanica
                                            Inula crithmoides
                                            Inula helenium
                                            Inula hookeri
                                            Inula mariana
                                            Inula salicina
                                            Inula viscosa
                                    Iogeton
                                    Ionactis
                                            Ionactis alpina
                                            Ionactis caelestis
                                            Ionactis elegans
                                                   [Chaetopappa elegans]
                                            Ionactis linariifolia
                                            Ionactis linariifolius
                                            Ionactis stenomeres
                                    Iostephane
                                            Iostephane heterophylla
                                            Iostephane madrensis
                                            Iostephane papposa
                                            Iostephane trilobata
                                    Iphiona
                                            Iphiona maris-mortui
                                    Ismelia
                                            Ismelia carinata
                                                   [Glebionis carinatum]
                                    Isocarpha
                                            Isocarpha atriplicifolia
                                              Isocarpha atriplicifolia subsp. atriplicifolia
                                            Isocarpha microcephala
                                            Isocarpha oppositifolia
                                              Isocarpha oppositifolia var. achyranthes
                                    Isocoma
                                            Isocoma acradenia
                                              Isocoma acradenia var. acradenia
                                                     [Haplopappus acradenius ssp. bracteosus]
                                                     [Haplopappus acradenius]
                                              Isocoma acradenia var. bracteosa
                                              Isocoma acradenia var. eremophila
                                                     [Haplopappus acradenius ssp. eremophilus]
                                                     [Isocoma acradenia ssp. eremophila]
                                                     [Isocoma eremophila]
                                            Isocoma arguta
                                            Isocoma azteca
                                            Isocoma bracteosa
                                            Isocoma coronopifolia
                                                   [Isocoma coronopifolia var. pedicellata]
                                                   [Isocoma pedicellata]
                                            Isocoma decumbens
                                            Isocoma drummondii
                                                   [Haplopappus drummondii]
                                                   [Isocoma megalantha]
                                            Isocoma felgeri
                                            Isocoma gypsophila
                                            Isocoma hartwegii
                                            Isocoma heterophylla
                                            Isocoma humilis
                                            Isocoma latifolia
                                            Isocoma leucanthemifolia
                                            Isocoma menziesii
                                              Isocoma menziesii var. decumbens
                                                     [Haplopappus venetus ssp. furfuraceus]
                                                     [Isocoma veneta var. furfuracea]
                                              Isocoma menziesii var. diabolica
                                              Isocoma menziesii var. menziesii
                                              Isocoma menziesii var. sedoides
                                              Isocoma menziesii var. tridentata
                                              Isocoma menziesii var. vernonioides
                                            Isocoma oxyphylla
                                            Isocoma palmeri
                                            Isocoma pluriflora
                                                   [Haplopappus heterophyllus]
                                                   [Haplopappus pluriflorus]
                                                   [Isocoma wrightii]
                                            Isocoma rusbyi
                                                   [Haplopappus rusbyi]
                                            Isocoma tenuisecta
                                                   [Haplopappus tenuisectus]
                                            Isocoma tomentosa
                                            Isocoma veneta
                                                   [Haplopappus venetus ssp. oxyphyllus]
                                                   [Haplopappus venetus ssp. vernonioides]
                                                   [Haplopappus venetus var. argutus]
                                                   [Haplopappus venetus var. hartwegii]
                                                   [Haplopappus venetus var. sedoides]
                                                   [Haplopappus venetus]
                                              Isocoma veneta var. oxyphylla
                                              Isocoma veneta var. sedoides
                                              Isocoma veneta var. vernonioides
                                            Isocoma vernonioides
                                    Isopappus
                                            Isopappus hookerianus
                                            Isopappus validus
                                    Isostigma
                                            Isostigma crithmifolium
                                            Isostigma hoffmannii
                                            Isostigma speciosum
                                    Iva
                                            Iva angustifolia
                                              Iva angustifolia var. latior
                                            Iva annua
                                              Iva annua var. annua
                                              Iva annua var. caudata
                                              Iva annua var. macrocarpa
                                            Iva asperifolia
                                            Iva axillaris
                                                   [Iva axillaris ssp. robustior]
                                                   [Iva axillaris var. robustior]
                                              Iva axillaris var. parvifolia
                                            Iva caudata
                                            Iva cheiranthifolia
                                            Iva ciliata
                                              Iva ciliata var. macrocarpa
                                            Iva dealbata
                                            Iva frutescens
                                              Iva frutescens ssp. frutescens
                                              Iva frutescens ssp. oraria
                                              Iva frutescens var. oraria
                                            Iva hayesiana
                                            Iva imbricata
                                            Iva microcephala
                                            Iva texensis
                                    Ixeris
                                            Ixeris stolonifera
                                    Jacea
                                            Jacea pratensis
                                    Jaegeria
                                            Jaegeria bellidiflora
                                            Jaegeria glabra
                                              Jaegeria glabra var. nana
                                            Jaegeria hirta
                                            Jaegeria macrocephala
                                            Jaegeria pedunculata
                                            Jaegeria petiolaris
                                            Jaegeria purpurascens
                                    Jalcophila
                                    Jaliscoa
                                            Jaliscoa pappifera
                                    Jamesianthus
                                            Jamesianthus alabamensis
                                    Jaumea
                                           [Exarata]
                                            Jaumea carnosa
                                            Jaumea mexicana
                                            Jaumea peduncularis
                                    Jefea
                                            Jefea brevifolia
                                                   [Zexmenia brevifolia]
                                            Jefea lantanifolia
                                    Jensia
                                            Jensia rammii
                                                   [Anisocarpus rammii]
                                            Jensia yosemitana
                                    Jessea
                                            Jessea cooperi
                                    Joseanthus
                                    Jungia
                                            Jungia pringlei
                                    Kalimeris
                                            Kalimeris indica
                                            Kalimeris mongolica
                                    Kanimia
                                    Kaunia
                                            Kaunia rufescens
                                    Keerlia
                                            Keerlia bellidifolia
                                            Keerlia effusa
                                            Keerlia skirrhobasis
                                    Keysseria
                                            Keysseria erici
                                            Keysseria helenae
                                            Keysseria lavandula
                                            Keysseria maviensis
                                    Kingianthus
                                    Kleinia
                                            Kleinia anteuphorbium
                                            Kleinia pendula
                                            Kleinia radicans
                                            Kleinia repens
                                            Kleinia ruderalis
                                            Kleinia stapeliiformis
                                    Koanophyllon
                                            Koanophyllon dolicholepis
                                            Koanophyllon droserolepis
                                            Koanophyllon hylonomum
                                            Koanophyllon monanthum
                                            Koanophyllon palmeri
                                              Koanophyllon palmeri var. palmeri
                                              Koanophyllon palmeri var. tonsum
                                            Koanophyllon polyodon
                                            Koanophyllon sinaloensis
                                            Koanophyllon solidaginifolium
                                                   [Eupatorium solidaginifolium]
                                            Koanophyllon villosum
                                    Koelpinia
                                            Koelpinia linearis
                                    Koyamacalia
                                            Koyamacalia auriculata
                                    Krigia
                                            Krigia biflora
                                              Krigia biflora var. biflora
                                                     [Cynthia virginica]
                                                     [Hyoseris biflora]
                                                     [Krigia amplexicaulis]
                                                     [Krigia biflora ssp. glandulifera]
                                              Krigia biflora var. viridis
                                                     [Cynthia viridis]
                                            Krigia cespitosa
                                                   [Krigia caespitosa]
                                              Krigia cespitosa var. cespitosa
                                              Krigia cespitosa var. gracilis
                                            Krigia dandelion
                                            Krigia montana
                                            Krigia occidentalis
                                            Krigia virginica
                                            Krigia wrightii
                                    Kuhnia
                                            Kuhnia eupatorioides
                                              Kuhnia eupatorioides var. angustifolia
                                              Kuhnia eupatorioides var. corymbulosa
                                              Kuhnia eupatorioides var. floridana
                                              Kuhnia eupatorioides var. gracilis
                                              Kuhnia eupatorioides var. gracillima
                                              Kuhnia eupatorioides var. ozarkana
                                              Kuhnia eupatorioides var. pyramidalis
                                              Kuhnia eupatorioides var. texana
                                            Kuhnia glutinosa
                                            Kuhnia hitchcockii
                                            Kuhnia leptophylla
                                            Kuhnia mosieri
                                            Kuhnia oreithales
                                            Kuhnia rosemarinifolia
                                            Kuhnia rosmarinifolia
                                    Kyhosia
                                            Kyhosia bolanderi
                                    Kyrstenia
                                            Kyrstenia betulaefolia
                                    Lacinaria
                                            Lacinaria aspera
                                              Lacinaria aspera var. spheroidea
                                            Lacinaria boykinii
                                            Lacinaria chapmanii
                                            Lacinaria chlorolepis
                                            Lacinaria cylindracea
                                            Lacinaria elegans
                                            Lacinaria elegantula
                                            Lacinaria flabellata
                                            Lacinaria garberi
                                            Lacinaria gracilis
                                            Lacinaria graminifolia
                                            Lacinaria helleri
                                            Lacinaria laxa
                                            Lacinaria microcephala
                                            Lacinaria nashii
                                            Lacinaria pauciflora
                                            Lacinaria pilosa
                                            Lacinaria punctata
                                            Lacinaria pycnostachya
                                            Lacinaria regimontis
                                            Lacinaria ruthii
                                            Lacinaria scariosa
                                              Lacinaria scariosa var. nieuwlandii
                                            Lacinaria secunda
                                            Lacinaria shortii
                                            Lacinaria smallii
                                            Lacinaria spicata
                                            Lacinaria squarrosa
                                              Lacinaria squarrosa var. intermedia
                                            Lacinaria tenuifolia
                                            Lacinaria tracyi
                                    Lactuca
                                            Lactuca biennis
                                                   [Lactuca spicata var. integrifolia]
                                                   [Lactuca spicata]
                                                   [Mulgedium spicatum var. integrifolium]
                                                   [Mulgedium spicatum]
                                            Lactuca canadensis
                                                   [Lactuca canadensis var. integrifolia]
                                                   [Lactuca canadensis var. latifolia]
                                                   [Lactuca canadensis var. longifolia]
                                                   [Lactuca canadensis var. obovata]
                                                   [Lactuca canadensis var. typica]
                                                   [Lactuca sagittifolia]
                                                   [Lactuca steelei]
                                            Lactuca floridana
                                              Lactuca floridana var. floridana
                                              Lactuca floridana var. villosa
                                                     [Lactuca villosa]
                                                     [Mulgedium villosum]
                                            Lactuca graminifolia
                                              Lactuca graminifolia var. arizonica
                                              Lactuca graminifolia var. graminifolia
                                              Lactuca graminifolia var. mexicana
                                            Lactuca hirsuta
                                              Lactuca hirsuta var. albiflora
                                              Lactuca hirsuta var. hirsuta
                                              Lactuca hirsuta var. sanguinea
                                            Lactuca indica
                                            Lactuca integrifolia
                                            Lactuca intybacea
                                            Lactuca ludoviciana
                                                   [Lactuca campestris var. typica]
                                                   [Lactuca campestris]
                                            Lactuca saligna
                                                   [Lactuca saligna var. runcinata]
                                            Lactuca sativa
                                                   [Lactuca scariola var. integrata]
                                                   [Lactuca scariola var. integrifolia]
                                            Lactuca serriola
                                                   [Lactuca scariola]
                                              Lactuca serriola var. integrata
                                            Lactuca stolonifera
                                            Lactuca viminea
                                            Lactuca virosa
                                            Lactuca x morssii
                                    Laennecia
                                            Laennecia chihuahuana
                                            Laennecia confusa
                                            Laennecia coulteri
                                                   [Conyza coulteri var. virgata]
                                                   [Conyza coulteri]
                                                   [Eschenbachia coulteri]
                                            Laennecia eriophylla
                                                   [Conyza eriophylla]
                                                   [Erigeron eriophyllus]
                                            Laennecia filaginoides
                                            Laennecia gnaphalioides
                                            Laennecia pimana
                                            Laennecia schiedeana
                                                   [Conyza schiedeana]
                                                   [Erigeron schiedeanus]
                                                   [Leptilon integrifolium]
                                            Laennecia sophiifolia
                                                   [Conyza coulteri var. tenuisecta]
                                                   [Conyza sophiifolia]
                                                   [Eschenbachia tenuisecta]
                                            Laennecia spellenbergii
                                            Laennecia turnerorum
                                    Laestadia
                                    Lagascea
                                            Lagascea angustifolia
                                            Lagascea aurea
                                            Lagascea decipiens
                                              Lagascea decipiens var. decipiens
                                              Lagascea decipiens var. glandulosa
                                            Lagascea helianthifolia
                                              Lagascea helianthifolia var. adenocaulis
                                              Lagascea helianthifolia var. levior
                                            Lagascea heteropappus
                                            Lagascea mollis
                                                   [Nocca mollis]
                                            Lagascea rigida
                                            Lagascea rubra
                                    Lagenifera
                                            Lagenifera erici
                                            Lagenifera helenae
                                            Lagenifera maviensis
                                    Lagenophora
                                            Lagenophora viridis
                                    Laggera
                                            Laggera pterodonta
                                    Lagophylla
                                            Lagophylla congesta
                                            Lagophylla dichotoma
                                              Lagophylla dichotoma ssp. minor
                                            Lagophylla glandulosa
                                              Lagophylla glandulosa ssp. serrata
                                            Lagophylla minor
                                            Lagophylla ramosissima
                                              Lagophylla ramosissima ssp. congesta
                                              Lagophylla ramosissima ssp. ramosissima
                                            Lagophylla scabrella
                                    Laphamia
                                            Laphamia angustifolia
                                              Laphamia angustifolia ssp. laciniata
                                            Laphamia bisetosa
                                            Laphamia cinerea
                                            Laphamia dissecta
                                            Laphamia halimifolia
                                              Laphamia halimifolia ssp. lindheimeri
                                            Laphamia inyoensis
                                            Laphamia megalocephala
                                            Laphamia rotundata
                                            Laphamia rupestris
                                            Laphamia staurophylla
                                            Laphamia villosa
                                    Lappa
                                    Lapsana
                                            Lapsana apogonoides
                                            Lapsana communis
                                    Lapsanastrum
                                            Lapsanastrum apogonoides
                                    Lasallea
                                            Lasallea adnata
                                            Lasallea caroliniana
                                            Lasallea concolor
                                            Lasallea grandiflora
                                            Lasallea walteri
                                            Lasallea x amethystina
                                    Lasianthaea
                                            Lasianthaea aurea
                                            Lasianthaea calva
                                            Lasianthaea ceanothifolia
                                              Lasianthaea ceanothifolia var. gracilis
                                              Lasianthaea ceanothifolia var. gradata
                                              Lasianthaea ceanothifolia var. verbenifolia
                                            Lasianthaea crocea
                                            Lasianthaea fruticosa
                                              Lasianthaea fruticosa var. alamosana
                                              Lasianthaea fruticosa var. fasciculata
                                              Lasianthaea fruticosa var. michoacana
                                              Lasianthaea fruticosa var. occidentalis
                                            Lasianthaea gentryi
                                            Lasianthaea guatemalensis
                                            Lasianthaea helianthoides
                                            Lasianthaea jaliscensis
                                            Lasianthaea macrocephala
                                            Lasianthaea palmeri
                                            Lasianthaea podocephala
                                                   [Verbesina podocephala]
                                                   [Zexmenia podocephala]
                                            Lasianthaea seemannii
                                            Lasianthaea squarrosa
                                    Lasiocephalus
                                    Lasiorrhiza
                                    Lasiospermum
                                            Lasiospermum bipinnatum
                                            Lasiospermum radiatum
                                    Lasthenia
                                            Lasthenia burkei
                                            Lasthenia californica
                                                   [Baeria chrysostoma ssp. gracilis]
                                                   [Baeria chrysostoma ssp. hirsutula]
                                                   [Baeria chrysostoma var. gracilis]
                                                   [Baeria chrysostoma]
                                                   [Baeria hirsutula]
                                                   [Lasthenia chrysostoma]
                                              Lasthenia californica ssp. bakeri
                                              Lasthenia californica ssp. californica
                                              Lasthenia californica ssp. macrantha
                                            Lasthenia chrysantha
                                            Lasthenia conjugens
                                            Lasthenia coronaria
                                                   [Baeria californica]
                                            Lasthenia debilis
                                            Lasthenia ferrisiae
                                            Lasthenia fremontii
                                            Lasthenia glaberrima
                                            Lasthenia glabrata
                                              Lasthenia glabrata ssp. coulteri
                                              Lasthenia glabrata ssp. glabrata
                                              Lasthenia glabrata var. coulteri
                                            Lasthenia gracilis
                                            Lasthenia leptalea
                                            Lasthenia macrantha
                                              Lasthenia macrantha ssp. bakeri
                                              Lasthenia macrantha ssp. macrantha
                                              Lasthenia macrantha ssp. prisca
                                            Lasthenia maritima
                                            Lasthenia microglossa
                                            Lasthenia minor
                                                   [Baeria minor]
                                                   [Baeria uliginosa]
                                              Lasthenia minor ssp. maritima
                                              Lasthenia minor var. maritima
                                            Lasthenia ornduffii
                                            Lasthenia platycarpha
                                    Launaea
                                            Launaea capitata
                                            Launaea cornuta
                                            Launaea foxii
                                            Launaea intybacea
                                            Launaea nudicaulis
                                    Layia
                                            Layia carnosa
                                            Layia chrysanthemoides
                                              Layia chrysanthemoides ssp. maritima
                                            Layia discoidea
                                            Layia fremontii
                                            Layia gaillardioides
                                            Layia glandulosa
                                                   [Layia glandulosa ssp. lutea]
                                            Layia graveolens
                                            Layia heterotricha
                                            Layia hieracioides
                                                   [Layia paniculata]
                                            Layia jonesii
                                            Layia leucopappa
                                            Layia munzii
                                            Layia pentachaeta
                                              Layia pentachaeta ssp. albida
                                              Layia pentachaeta ssp. pentachaeta
                                              Layia pentachaeta var. hansenii
                                            Layia platyglossa
                                                   [Layia platyglossa ssp. campestris]
                                                   [Layia platyglossa var. breviseta]
                                                   [Layia ziegleri]
                                            Layia septentrionalis
                                    Lebetina
                                            Lebetina cooperi
                                    Lecocarpus
                                    Lefrovia
                                    Leibnitzia
                                            Leibnitzia lyrata
                                                   [Chaptalia alsophila]
                                                   [Chaptalia leucocephala]
                                                   [Chaptalia seemannii]
                                                   [Leibnitzia seemannii]
                                            Leibnitzia occimadrensis
                                    Leiodon
                                            Leiodon latifolius
                                    Lembertia
                                            Lembertia congdonii
                                    Leontodon
                                            Leontodon autumnalis
                                              Leontodon autumnalis ssp. autumnalis
                                              Leontodon autumnalis ssp. pratensis
                                              Leontodon autumnalis var. pratensis
                                            Leontodon danubialis
                                            Leontodon hastilis
                                              Leontodon hastilis var. glabratus
                                              Leontodon hastilis var. vulgaris
                                            Leontodon hirtus
                                                   [Apargia nudicaulis]
                                                   [Leontodon nudicaulis]
                                            Leontodon hispidus
                                              Leontodon hispidus ssp. danubialis
                                              Leontodon hispidus ssp. hispidus
                                              Leontodon hispidus var. glabratus
                                            Leontodon muelleri
                                            Leontodon saxatilis
                                              Leontodon saxatilis ssp. saxatilis
                                              Leontodon saxatilis ssp. longirostris
                                            Leontodon taraxacoides
                                              Leontodon taraxacoides ssp. longirostris
                                              Leontodon taraxacoides ssp. taraxacoides
                                                     [Leontodon leysseri]
                                                     [Leontodon nudicaulis ssp. taraxacoides]
                                    Leontopodium
                                            Leontopodium nanum
                                            Leontopodium pusillum
                                            leontopodium himalayanum
                                    Lepachys
                                            Lepachys mexicana
                                            Lepachys peduncularis
                                              Lepachys peduncularis var. picta
                                    Lepidanthus
                                    Lepidaploa
                                            Lepidaploa araripensis
                                            Lepidaploa sericea
                                    Lepidonia
                                    Lepidophyllum
                                    Lepidospartum
                                            Lepidospartum burgessii
                                            Lepidospartum latisquamum
                                            Lepidospartum squamatum
                                                   [Lepidospartum squamatum var. palmeri]
                                              Lepidospartum squamatum var. obtectum
                                    Lepidotheca
                                    Leptilon
                                    Leptocarpha
                                            Leptocarpha rivularis
                                    Leptopharynx
                                            Leptopharynx trisecta
                                    Leptoseris
                                    Leptosyne
                                            Leptosyne arizonica
                                              Leptosyne arizonica var. pubescens
                                            Leptosyne californica
                                            Leptosyne calliopsidea
                                              Leptosyne calliopsidea var. nana
                                            Leptosyne hamiltonii
                                    Lessingia
                                            Lessingia adenophora
                                            Lessingia arachnoidea
                                            Lessingia bakeri
                                            Lessingia bicolor
                                            Lessingia filaginifolia
                                              Lessingia filaginifolia var. californica
                                            Lessingia germanorum
                                              Lessingia germanorum var. parvula
                                              Lessingia germanorum var. pectinata
                                              Lessingia germanorum var. peirsonii
                                              Lessingia germanorum var. ramulosissima
                                              Lessingia germanorum var. tenuipes
                                              Lessingia germanorum var. tenuis
                                              Lessingia germanorum var. tomentosa
                                            Lessingia glandulifera
                                              Lessingia glandulifera var. glandulifera
                                                     [Lessingia germanorum var. glandulifera]
                                              Lessingia glandulifera var. pectinata
                                              Lessingia glandulifera var. tomentosa
                                              Lessingia glandulifera var. peirsonii
                                            Lessingia heterochroma
                                            Lessingia hololeuca
                                              Lessingia hololeuca var. arachnoidea
                                            Lessingia imbricata
                                            Lessingia lemmonii
                                              Lessingia lemmonii var. lemmonii
                                                     [Lessingia germanorum var. lemmonii]
                                              Lessingia lemmonii var. peirsonii
                                              Lessingia lemmonii var. ramulosissima
                                            Lessingia leptoclada
                                              Lessingia leptoclada var. microcephala
                                              Lessingia leptoclada var. tenuis
                                            Lessingia mendocina
                                            Lessingia micradenia
                                              Lessingia micradenia var. arachnoidea
                                              Lessingia micradenia var. glabrata
                                              Lessingia micradenia var. micradenia
                                            Lessingia nana
                                              Lessingia nana var. caulescens
                                            Lessingia nemaclada
                                              Lessingia nemaclada var. albiflora
                                              Lessingia nemaclada var. mendocina
                                              Lessingia nemaclada var. nemaclada
                                            Lessingia occidentalis
                                            Lessingia pectinata
                                              Lessingia pectinata var. pectinata
                                              Lessingia pectinata var. tenuipes
                                            Lessingia ramulosa
                                              Lessingia ramulosa var. adenophora
                                              Lessingia ramulosa var. glabrata
                                              Lessingia ramulosa var. micradenia
                                              Lessingia ramulosa var. ramulosa
                                              Lessingia ramulosa var. tenuis
                                            Lessingia ramulosissima
                                            Lessingia subspicata
                                            Lessingia tenuis
                                            Lessingia tomentosa
                                            Lessingia virgata
                                              Lessingia virgata var. glomerata
                                              Lessingia virgata var. virgata
                                    Lessingianthus
                                    Leucacantha
                                    Leucampyx
                                    Leucantha
                                    Leucanthemella
                                            Leucanthemella serotina
                                                   [Chrysanthemum serotinum]
                                                   [Leucanthemum serotinum]
                                                   [Tanacetum serotinum]
                                    Leucanthemum
                                            Leucanthemum integrifolium
                                            Leucanthemum lacustre
                                            Leucanthemum maximum
                                            Leucanthemum nipponicum
                                            Leucanthemum paludosum
                                            Leucanthemum vulgare
                                                   [Chrysanthemum leucanthemum var. boecheri]
                                                   [Chrysanthemum leucanthemum var. pinnatifidum]
                                                   [Chrysanthemum leucanthemum]
                                                   [Leucanthemum leucanthemum]
                                                   [Leucanthemum vulgare var. pinnatifidum]
                                            Leucanthemum x superbum
                                    Leucelene
                                    Leuceria
                                    Leucheria
                                            Leucheria candidissima
                                    Leuciva
                                            Leuciva dealbata
                                    Leucopsidium
                                    Leucosyris
                                    Liabellum
                                            Liabellum gentryi
                                    Liabum
                                            Liabum acuminatum
                                            Liabum amplexicaule
                                            Liabum angustissimum
                                            Liabum bourgeaui
                                            Liabum caducifolium
                                            Liabum discolor
                                            Liabum glabrum
                                              Liabum glabrum var. hypoleucum
                                            Liabum polycephalum
                                            Liabum pringlei
                                    Liatris
                                            Liatris acidota
                                                   [Lacinaria acidota]
                                            Liatris aestivalis
                                            Liatris angustifolia
                                            Liatris aspera
                                              Liatris aspera var. aspera
                                              Liatris aspera var. intermedia
                                              Liatris aspera var. salutans
                                            Liatris bebbiana
                                            Liatris borealis
                                            Liatris bracteata
                                            Liatris chapmanii
                                            Liatris cokeri
                                            Liatris compacta
                                            Liatris cylindracea
                                            Liatris cymosa
                                            Liatris densispicata
                                              Liatris densispicata var. densispicata
                                              Liatris densispicata var. interrupta
                                            Liatris earlei
                                            Liatris elegans
                                              Liatris elegans var. bridgesii
                                              Liatris elegans var. carizzana
                                              Liatris elegans var. elegans
                                              Liatris elegans var. flabellata
                                              Liatris elegans var. kralii
                                            Liatris elegantula
                                            Liatris garberi
                                            Liatris gholsonii
                                            Liatris glabrata
                                              Liatris glabrata var. alabamensis
                                            Liatris glandulosa
                                            Liatris gracilis
                                            Liatris graminifolia
                                              Liatris graminifolia var. dubia
                                              Liatris graminifolia var. elegantula
                                              Liatris graminifolia var. lasia
                                              Liatris graminifolia var. racemosa
                                              Liatris graminifolia var. smallii
                                              Liatris graminifolia var. virgata
                                            Liatris helleri
                                            Liatris hirsuta
                                            Liatris laevigata
                                            Liatris lancifolia
                                                   [Lacinaria lancifolia]
                                                   [Liatris kansana]
                                            Liatris ligulistylis
                                                   [Lacinaria ligulistylis]
                                            Liatris microcephala
                                            Liatris mucronata
                                            Liatris novae-angliae
                                              Liatris novae-angliae var. nieuwlandii
                                            Liatris ohlingerae
                                            Liatris oligocephala
                                            Liatris patens
                                            Liatris pauciflora
                                              Liatris pauciflora var. pauciflora
                                              Liatris pauciflora var. secunda
                                            Liatris pilosa
                                              Liatris pilosa var. elegantula
                                              Liatris pilosa var. lasia
                                              Liatris pilosa var. pilosa
                                            Liatris provincialis
                                            Liatris punctata
                                              Liatris punctata var. mexicana
                                              Liatris punctata var. mucronata
                                              Liatris punctata var. nebraskana
                                              Liatris punctata var. punctata
                                              Liatris punctata var. typica
                                            Liatris pycnostachya
                                              Liatris pycnostachya var. lasiophylla
                                              Liatris pycnostachya var. pycnostachya
                                            Liatris regimontis
                                            Liatris savannensis
                                            Liatris scabra
                                            Liatris scariosa
                                              Liatris scariosa var. nieuwlandii
                                              Liatris scariosa var. novae-angliae
                                              Liatris scariosa var. novaeangliae
                                              Liatris scariosa var. scariosa
                                              Liatris scariosa var. squarrulosa
                                              Liatris scariosa var. virginiana
                                            Liatris secunda
                                            Liatris spheroidea
                                            Liatris spicata
                                              Liatris spicata var. racemosa
                                              Liatris spicata var. resinosa
                                              Liatris spicata var. spicata
                                            Liatris squarrosa
                                              Liatris squarrosa var. alabamensis
                                              Liatris squarrosa var. compacta
                                              Liatris squarrosa var. glabrata
                                              Liatris squarrosa var. gracilenta
                                              Liatris squarrosa var. hirsuta
                                              Liatris squarrosa var. squarrosa
                                            Liatris squarrulosa
                                            Liatris tenuifolia
                                              Liatris tenuifolia var. laevigata
                                              Liatris tenuifolia var. quadriflora
                                              Liatris tenuifolia var. tenuifolia
                                            Liatris tenuis
                                            Liatris turgida
                                            Liatris virgata
                                            Liatris x boykinii
                                            Liatris x fallacior
                                            Liatris x freemaniana
                                            Liatris x frostii
                                            Liatris x gladewitzii
                                            Liatris x macdanieliana
                                            Liatris x nieuwlandii
                                            Liatris x ridgwayi
                                            Liatris x steelei
                                            Liatris x weaveri
                                    Lidbeckia
                                            Lidbeckia bipinnata
                                    Ligularia
                                            Ligularia amplectens
                                            Ligularia dentata
                                            Ligularia tussilaginea
                                            Ligularia websteri
                                    Lindheimera
                                            Lindheimera texana
                                    Linochilus
                                    Linosyris
                                            Linosyris bolanderi
                                            Linosyris howardii
                                            Linosyris parryi
                                            Linosyris pulchella
                                            Linosyris serrulata
                                            Linosyris viscidiflora
                                              Linosyris viscidiflora var. latifolia
                                              Linosyris viscidiflora var. puberula
                                    Lipochaeta
                                            Lipochaeta acris
                                            Lipochaeta alata
                                              Lipochaeta alata var. acrior
                                              Lipochaeta alata var. pulchrior
                                            Lipochaeta bryanii
                                            Lipochaeta calycosa
                                            Lipochaeta christophersenii
                                            Lipochaeta connata
                                              Lipochaeta connata var. acris
                                              Lipochaeta connata var. connata
                                              Lipochaeta connata var. decurrens
                                              Lipochaeta connata var. lata
                                              Lipochaeta connata var. littoralis
                                            Lipochaeta degeneri
                                            Lipochaeta deltoidea
                                            Lipochaeta dubia
                                            Lipochaeta elliptica
                                            Lipochaeta exigua
                                            Lipochaeta fauriei
                                            Lipochaeta flexuosa
                                            Lipochaeta forbesii
                                              Lipochaeta forbesii var. sherffii
                                            Lipochaeta garberi
                                            Lipochaeta hastata
                                            Lipochaeta heterophylla
                                              Lipochaeta heterophylla var. malvacea
                                              Lipochaeta heterophylla var. molokaiensis
                                            Lipochaeta integrifolia
                                              Lipochaeta integrifolia var. argentea
                                              Lipochaeta integrifolia var. gracilis
                                              Lipochaeta integrifolia var. major
                                              Lipochaeta integrifolia var. megacephala
                                            Lipochaeta intermedia
                                            Lipochaeta kaenaensis
                                            Lipochaeta kahoolawensis
                                            Lipochaeta kamolensis
                                            Lipochaeta kawaihoaensis
                                            Lipochaeta lanceolata
                                            Lipochaeta lavarum
                                              Lipochaeta lavarum var. conferta
                                              Lipochaeta lavarum var. hillebrandiana
                                              Lipochaeta lavarum var. lanaiensis
                                              Lipochaeta lavarum var. longifolia
                                              Lipochaeta lavarum var. maneleana
                                              Lipochaeta lavarum var. ovata
                                              Lipochaeta lavarum var. salicifolia
                                              Lipochaeta lavarum var. scaposa
                                              Lipochaeta lavarum var. skottsbergii
                                              Lipochaeta lavarum var. stearnsii
                                            Lipochaeta lobata
                                              Lipochaeta lobata var. albescens
                                              Lipochaeta lobata var. aprevalliana
                                              Lipochaeta lobata var. denticulata
                                              Lipochaeta lobata var. grossedentata
                                              Lipochaeta lobata var. hastulata
                                              Lipochaeta lobata var. hastulatoides
                                              Lipochaeta lobata var. hosakae
                                              Lipochaeta lobata var. incisior
                                              Lipochaeta lobata var. leptophylla
                                              Lipochaeta lobata var. lobata
                                              Lipochaeta lobata var. makenensis
                                              Lipochaeta lobata var. maunaloensis
                                            Lipochaeta mauiensis
                                            Lipochaeta micrantha
                                              Lipochaeta micrantha var. exigua
                                              Lipochaeta micrantha var. micrantha
                                            Lipochaeta minuscula
                                            Lipochaeta molokiniensis
                                            Lipochaeta nesophila
                                            Lipochaeta niihauensis
                                            Lipochaeta ovata
                                            Lipochaeta perdita
                                            Lipochaeta pinnatifida
                                            Lipochaeta populifolia
                                            Lipochaeta porophila
                                            Lipochaeta profusa
                                              Lipochaeta profusa var. robustior
                                            Lipochaeta remyi
                                            Lipochaeta robusta
                                            Lipochaeta rockii
                                              Lipochaeta rockii var. dissecta
                                              Lipochaeta rockii var. parva
                                              Lipochaeta rockii var. subovata
                                            Lipochaeta scabra
                                            Lipochaeta setosa
                                            Lipochaeta subcordata
                                              Lipochaeta subcordata var. membranacea
                                              Lipochaeta subcordata var. populifolia
                                            Lipochaeta succulenta
                                              Lipochaeta succulenta var. angustata
                                              Lipochaeta succulenta var. barclayi
                                              Lipochaeta succulenta var. decurrens
                                              Lipochaeta succulenta var. trifida
                                            Lipochaeta tenuifolia
                                            Lipochaeta tenuis
                                              Lipochaeta tenuis var. sellingii
                                            Lipochaeta trilobata
                                            Lipochaeta variolosa
                                            Lipochaeta venosa
                                            Lipochaeta vittata
                                            Lipochaeta waimeaensis
                                            Lipochaeta warshauerii
                                            Lipochaeta x procumbens
                                    Litrisa
                                            Litrisa carnosa
                                    Llerasia
                                    Logfia
                                            Logfia arizonica
                                                   [Filago arizonica]
                                            Logfia arvensis
                                            Logfia californica
                                                   [Filago californica]
                                                   [Oglifa californica]
                                            Logfia depressa
                                                   [Filago depressa]
                                            Logfia filaginoides
                                            Logfia gallica
                                                   [Filago gallica]
                                                   [Oglifa gallica]
                                            Logfia minima
                                    Lophopappus
                                    Lorandersonia
                                            Lorandersonia baileyi
                                                   [Chrysothamnus baileyi]
                                                   [Chrysothamnus pulchellus ssp. baileyi]
                                                   [Chrysothamnus pulchellus var. baileyi]
                                                   [Ericameria pulchella ssp. baileyi]
                                            Lorandersonia linifolia
                                                   [Chrysothamnus linifolius]
                                                   [Chrysothamnus viscidiflorus ssp. linifolius]
                                                   [Chrysothamnus viscidiflorus var. linifolius]
                                                   [Ericameria linifolia]
                                            Lorandersonia microcephala
                                            Lorandersonia peirsonii
                                            Lorandersonia pulchella
                                            Lorandersonia salicina
                                                   [Haplopappus salicinus]
                                                   [Hesperodoria salicina]
                                            Lorandersonia spathulata
                                    Lorentzianthus
                                    Loricaria
                                            Loricaria thuyoides
                                    Lowellia
                                    Loxothysanus
                                            Loxothysanus pedunculatus
                                            Loxothysanus sinuatus
                                    Lucilia
                                    Luciliopsis
                                    Luina
                                            Luina hypoleuca
                                            Luina serpentina
                                            Luina stricta
                                    Lundellianthus
                                            Lundellianthus salvinii
                                    Luteidiscus
                                            Luteidiscus calcisabulorus
                                            Luteidiscus capillaris
                                            Luteidiscus rockii
                                    Lycoseris
                                    Lygodesmia
                                            Lygodesmia aphylla
                                            Lygodesmia doloresensis
                                            Lygodesmia entrada
                                            Lygodesmia grandiflora
                                                   [Erythremia grandiflora]
                                                   [Lygodesmia grandiflora var. stricta]
                                              Lygodesmia grandiflora var. arizonica
                                                     [Lygodesmia arizonica]
                                              Lygodesmia grandiflora var. dianthopsis
                                                     [Lygodesmia dianthopsis]
                                              Lygodesmia grandiflora var. doloresensis
                                              Lygodesmia grandiflora var. entrada
                                              Lygodesmia grandiflora var. grandiflora
                                            Lygodesmia juncea
                                              Lygodesmia juncea var. dianthopsis
                                            Lygodesmia ramosissima
                                            Lygodesmia rostrata
                                            Lygodesmia tenuifolia
                                            Lygodesmia texana
                                                   [Lygodesmia aphylla var. texana]
                                    Macdougalia
                                    Machaeranthera
                                            Machaeranthera arenaria
                                            Machaeranthera blephariphylla
                                                   [Aster gymnocephalus]
                                                   [Haplopappus blephariphyllus]
                                                   [Haplopappus gymnocephalus]
                                                   [Machaeranthera correllii]
                                                   [Machaeranthera gymnocephala]
                                            Machaeranthera cognata
                                            Machaeranthera coloradoensis
                                              Machaeranthera coloradoensis var. brandegeei
                                              Machaeranthera coloradoensis var. coloradoensis
                                            Machaeranthera confertifolia
                                            Machaeranthera crispa
                                            Machaeranthera cronquistii
                                            Machaeranthera frutescens
                                            Machaeranthera glabriuscula
                                              Machaeranthera glabriuscula var. confertifolia
                                              Machaeranthera glabriuscula var. villosa
                                            Machaeranthera gypsitherma
                                                   [Aster blepharophyllus]
                                            Machaeranthera gypsophila
                                            Machaeranthera heterocarpa
                                            Machaeranthera juncea
                                                   [Haplopappus junceus]
                                            Machaeranthera kingii
                                              Machaeranthera kingii var. barnebyana
                                            Machaeranthera linearifolia
                                            Machaeranthera parviflora
                                                   [Aster parviflorus]
                                                   [Aster parvulus]
                                                   [Machaeranthera pygmaea]
                                            Machaeranthera restiformis
                                            Machaeranthera riparia
                                                   [Aster riparius]
                                                   [Aster sonorae]
                                                   [Machaeranthera sonorae]
                                            Machaeranthera scabrella
                                                   [Machaeranthera pinnatifida var. scabrella]
                                            Machaeranthera spectabilis
                                            Machaeranthera stenoloba
                                            Machaeranthera tagetina
                                                   [Aster tagetinus]
                                            Machaeranthera tanacetifolia
                                                   [Aster tanacetifolius]
                                                   [Machaeranthera coronopifolia]
                                                   [Machaeranthera parthenium]
                                            Machaeranthera varians
                                            Machaeranthera viscida
                                                   [Haplopappus havardii]
                                                   [Machaeranthera havardii]
                                            Machaeranthera viscosula
                                            Machaeranthera wigginsii
                                    Macrachaenium
                                            Macrachaenium gracile
                                    Macraea
                                    Macronema
                                            Macronema aberrans
                                            Macronema discoidea
                                            Macronema discoideum
                                            Macronema greenei
                                            Macronema imbricata
                                            Macronema lineare
                                              Macronema lineare var. canescens
                                            Macronema obovatum
                                            Macronema obtusum
                                    Macrorhynchus
                                            Macrorhynchus humilis
                                            Macrorhynchus purpureus
                                    Macvaughiella
                                    Madaroglossa
                                            Madaroglossa angustifolia
                                            Madaroglossa elegans
                                            Madaroglossa hirsuta
                                    Madia
                                            Madia anomala
                                            Madia bolanderi
                                            Madia citrigracilis
                                            Madia citriodora
                                            Madia doris-nilesiae
                                            Madia elegans
                                              Madia elegans ssp. densifolia
                                              Madia elegans ssp. elegans
                                              Madia elegans ssp. vernalis
                                              Madia elegans ssp. wheeleri
                                              Madia elegans var. densifolia
                                            Madia exigua
                                            Madia glomerata
                                            Madia gracilis
                                                   [Madia dissitiflora]
                                                   [Madia gracilis ssp. collina]
                                                   [Madia gracilis ssp. pilosa]
                                            Madia hallii
                                            Madia madioides
                                            Madia minima
                                            Madia nutans
                                            Madia nuttallii
                                            Madia radiata
                                            Madia rammii
                                            Madia sativa
                                                   [Madia capitata]
                                                   [Madia sativa ssp. capitata]
                                                   [Madia sativa var. congesta]
                                            Madia stebbinsii
                                            Madia subspicata
                                            Madia tenella
                                            Madia yosemitana
                                    Malacomeris
                                            Malacomeris incanus
                                    Malacothrix
                                            Malacothrix arachnoidea
                                            Malacothrix blairii
                                            Malacothrix californica
                                            Malacothrix clevelandii
                                            Malacothrix coulteri
                                                   [Malacothrix coulteri var. cognata]
                                                   [Zollikoferia elquiensis]
                                            Malacothrix crispifolia
                                            Malacothrix fendleri
                                            Malacothrix floccifera
                                            Malacothrix foliosa
                                              Malacothrix foliosa ssp. crispifolia
                                              Malacothrix foliosa ssp. foliosa
                                              Malacothrix foliosa ssp. philbrickii
                                              Malacothrix foliosa ssp. polycephala
                                              Malacothrix foliosa var. indecora
                                              Malacothrix foliosa var. squalida
                                            Malacothrix glabrata
                                                   [Malacothrix californica var. glabrata]
                                            Malacothrix implicata
                                            Malacothrix incana
                                              Malacothrix incana var. succulenta
                                            Malacothrix indecora
                                            Malacothrix insularis
                                              Malacothrix insularis var. squalida
                                            Malacothrix junakii
                                            Malacothrix obtusa
                                            Malacothrix parviflora
                                            Malacothrix phaeocarpa
                                            Malacothrix polycephala
                                            Malacothrix saxatilis
                                              Malacothrix saxatilis var. arachnoidea
                                              Malacothrix saxatilis var. commutata
                                              Malacothrix saxatilis var. implicata
                                              Malacothrix saxatilis var. saxatilis
                                              Malacothrix saxatilis var. tenuifolia
                                                     [Malacothrix altissima]
                                                     [Malacothrix saxatilis var. altissima]
                                                     [Malacothrix saxatilis var. tenuissima]
                                                     [Malacothrix tenuifolia]
                                            Malacothrix senecioides
                                            Malacothrix similis
                                            Malacothrix sonchoides
                                                   [Leptoseris sonchoides]
                                            Malacothrix sonorae
                                            Malacothrix squalida
                                            Malacothrix stebbinsii
                                                   [Malacothrix clevelandii var. stebbinsii]
                                            Malacothrix succulenta
                                            Malacothrix torreyi
                                                   [Malacothrix sonchoides var. torreyi]
                                            Malacothrix xanti
                                    Mallinoa
                                            Mallinoa corymbosa
                                    Malperia
                                            Malperia tenuis
                                    Mantisalca
                                            Mantisalca salmantica
                                                   [Centaurea salmantica]
                                    Mariana
                                    Marshallia
                                            Marshallia caespitosa
                                              Marshallia caespitosa var. caespitosa
                                              Marshallia caespitosa var. signata
                                            Marshallia graminifolia
                                              Marshallia graminifolia ssp. tenuifolia
                                              Marshallia graminifolia var. cynanthera
                                              Marshallia graminifolia var. graminifolia
                                            Marshallia grandiflora
                                            Marshallia laciniarioides
                                            Marshallia latifolia
                                            Marshallia mohrii
                                            Marshallia obovata
                                              Marshallia obovata var. obovata
                                              Marshallia obovata var. platyphylla
                                              Marshallia obovata var. scaposa
                                            Marshallia ramosa
                                            Marshallia tenuifolia
                                              Marshallia tenuifolia var. graminifolia
                                            Marshallia trinervia
                                            Marshallia williamsonii
                                    Maruta
                                    Matricaria
                                            Matricaria aurea
                                            Matricaria chamomilla
                                                   [Chamomilla chamomilla]
                                                   [Chamomilla recutita]
                                                   [Matricaria chamomilla var. coronata]
                                                   [Matricaria recutita]
                                                   [Matricaria suaveolens]
                                            Matricaria courrantiana
                                            Matricaria discoidea
                                                   [Artemisia matricarioides]
                                                   [Chamomilla suaveolens]
                                                   [Lepidanthus suaveolens]
                                                   [Lepidotheca suaveolens]
                                                   [Matricaria matricarioides]
                                                   [Santolina suaveolens]
                                                   [Tanacetum suaveolens]
                                            Matricaria grandiflora
                                            Matricaria inodora
                                            Matricaria maritima
                                              Matricaria maritima ssp. inodora
                                              Matricaria maritima var. agrestis
                                              Matricaria maritima var. inodora
                                            Matricaria occidentalis
                                                   [Chamomilla occidentalis]
                                            Matricaria perforata
                                            Matricaria prostrata
                                            Matricaria suffruticosa
                                    Mauranthemum
                                            Mauranthemum paludosum
                                    Megalodonta
                                            Megalodonta beckii
                                              Megalodonta beckii var. beckii
                                              Megalodonta beckii var. hendersonii
                                              Megalodonta beckii var. oregonensis
                                    Melampodium
                                            Melampodium americanum
                                            Melampodium appendiculatum
                                            Melampodium arvense
                                            Melampodium australe
                                            Melampodium cinereum
                                              Melampodium cinereum var. cinereum
                                              Melampodium cinereum var. hirtellum
                                              Melampodium cinereum var. ramosissimum
                                            Melampodium cupulatum
                                            Melampodium dicoelocarpum
                                            Melampodium divaricatum
                                            Melampodium gracile
                                            Melampodium humile
                                            Melampodium kunthianum
                                            Melampodium leucanthum
                                              Melampodium leucanthum var. leucanthum
                                            Melampodium longicorne
                                            Melampodium longifolium
                                            Melampodium longipilum
                                            Melampodium microcephalum
                                            Melampodium moctezumum
                                            Melampodium montanum
                                            Melampodium nelsonii
                                            Melampodium oblongifolium
                                            Melampodium perfoliatum
                                                   [Alcina perfoliata]
                                            Melampodium pilosum
                                            Melampodium repens
                                            Melampodium rosei
                                            Melampodium ruderale
                                            Melampodium sericeum
                                                   [Melampodium hispidum]
                                            Melampodium sinaloense
                                            Melampodium sinuatum
                                            Melampodium strigosum
                                            Melampodium tenellum
                                            Melampodium tepicense
                                    Melanthera
                                            Melanthera angustifolia
                                            Melanthera aspera
                                              Melanthera aspera var. aspera
                                              Melanthera aspera var. glabriuscula
                                            Melanthera calcicola
                                            Melanthera canescens
                                            Melanthera confusa
                                            Melanthera deltoidea
                                            Melanthera ligulata
                                            Melanthera montana
                                            Melanthera nivea
                                                   [Amellus asper f. bicolor]
                                                   [Amellus asper]
                                                   [Bidens nivea]
                                                   [Melanthera carpenteri]
                                                   [Melanthera hastata]
                                            Melanthera parvifolia
                                            Melanthera radiata
                                    Mesadenia
                                            Mesadenia diversifolia
                                            Mesadenia floridana
                                            Mesadenia reniformis
                                            Mesadenia sulcata
                                    Mesanthophora
                                    Mexerion
                                            Mexerion mexicanum
                                    Micropsis
                                            Micropsis dasycarpa
                                    Micropus
                                            Micropus amphibola
                                            Micropus amphibolus
                                            Micropus angustifolius
                                            Micropus californicus
                                                   [Bombycilaena californica var. californica]
                                              Micropus californicus var. californicus
                                              Micropus californicus var. subvestitus
                                            Micropus dasycarpa
                                    Microseris
                                            Microseris acuminata
                                            Microseris alpestris
                                              Microseris aphantocarpha var. mariposana
                                            Microseris attenuata
                                            Microseris bigelovii
                                            Microseris bolanderi
                                            Microseris borealis
                                            Microseris campestris
                                            Microseris decipiens
                                            Microseris douglasii
                                              Microseris douglasii ssp. douglasii
                                              Microseris douglasii ssp. platycarpha
                                                     [Microseris douglasii var. platycarpha]
                                              Microseris douglasii ssp. tenella
                                            Microseris elegans
                                            Microseris howellii
                                            Microseris indivisa
                                            Microseris laciniata
                                              Microseris laciniata ssp. detlingii
                                              Microseris laciniata ssp. laciniata
                                              Microseris laciniata ssp. leptosepala
                                              Microseris laciniata ssp. siskiyouensis
                                            Microseris leucocarpha
                                            Microseris major
                                            Microseris nigrescens
                                            Microseris nutans
                                                   [Ptilocalais nutans]
                                                   [Scorzonella nutans var. major]
                                                   [Scorzonella nutans]
                                              Microseris nutans ssp. siskiyouensis
                                            Microseris paludosa
                                            Microseris proxima
                                            Microseris sylvatica
                                              Microseris sylvatica var. stillmani
                                    Microspermum
                                            Microspermum debile
                                              Microspermum debile var. arsenei
                                    Mikania
                                            Mikania batatifolia
                                            Mikania congesta
                                            Mikania cordata
                                            Mikania cordifolia
                                            Mikania fragilis
                                            Mikania houstoniana
                                            Mikania micrantha
                                            Mikania odoratissima
                                            Mikania pachyphylla
                                            Mikania periplocifolia
                                            Mikania porosa
                                            Mikania pyramidata
                                            Mikania scandens
                                                   [Mikania angulosa]
                                                   [Mikania scandens var. pubescens]
                                                   [Willoughbya heterophylla]
                                            Mikania stevensiana
                                    Milleria
                                            Milleria quinqueflora
                                    Mirasolia
                                            Mirasolia diversifolia
                                    Misbrookea
                                    Mniodes
                                    Molina
                                    Monactis
                                    Monolopia
                                            Monolopia congdonii
                                            Monolopia gracilens
                                            Monolopia lanceolata
                                            Monolopia major
                                            Monolopia minor
                                            Monolopia stricta
                                    Monoptilon
                                            Monoptilon bellidiforme
                                            Monoptilon bellioides
                                    Montagnaea
                                            Montagnaea hibiscifolia
                                    Montanoa
                                            Montanoa arborescens
                                            Montanoa atriplicifolia
                                            Montanoa bipinnatifida
                                            Montanoa frutescens
                                            Montanoa gentryi
                                            Montanoa grandiflora
                                            Montanoa hibiscifolia
                                            Montanoa leucantha
                                              Montanoa leucantha ssp. arborescens
                                              Montanoa leucantha var. arborescens
                                            Montanoa patens
                                            Montanoa revealii
                                            Montanoa schottii
                                            Montanoa speciosa
                                            Montanoa subtruncata
                                            Montanoa tomentosa
                                              Montanoa tomentosa ssp. rosei
                                                     [Montanoa rosei]
                                    Monticalia
                                    Moquinia
                                    Moscharia
                                            Moscharia pinnatifida
                                    Mulgedium
                                            Mulgedium floridanum
                                            Mulgedium pulchellum
                                                   [Lactuca tatarica var. pulchella]
                                                   [Lactuca tatarica]
                                    Munnozia
                                    Munzothamnus
                                            Munzothamnus blairii
                                    Mutisia
                                            Mutisia oligodon
                                            Mutisia subulata
                                    Mycelis
                                            Mycelis muralis
                                                   [Lactuca muralis]
                                    Nabalus
                                            Nabalus albus
                                            Nabalus asperus
                                            Nabalus boottii
                                            Nabalus crepidineus
                                            Nabalus cylindricus
                                            Nabalus integrifolius
                                            Nabalus nanus
                                            Nabalus racemosus
                                            Nabalus roanensis
                                            Nabalus serpentarius
                                            Nabalus trifoliolatus
                                            Nabalus virgatus
                                    Nacrea
                                    Nardophyllum
                                            Nardophyllum armatum
                                            Nardophyllum obtusifolium
                                    Nardosmia
                                            Nardosmia arctica
                                            Nardosmia japonica
                                            Nardosmia vitifolia
                                    Narvalina
                                    Nassauvia
                                            Nassauvia abbreviata
                                            Nassauvia darwinii
                                            Nassauvia dentata
                                            Nassauvia glomerulosa
                                    Neja
                                            Neja marginata
                                                   [Aster grisebachii]
                                    Neocuatrecasia
                                    Neohintonia
                                            Neohintonia monantha
                                    Neomirandea
                                            Neomirandea araliifolia
                                    Neonesomia
                                            Neonesomia palmeri
                                    Nestotus
                                            Nestotus macleanii
                                            Nestotus stenophyllus
                                    Neurolaena
                                            Neurolaena lobata
                                            Neurolaena oaxacana
                                    Nicolletia
                                            Nicolletia edwardsii
                                            Nicolletia occidentalis
                                            Nicolletia trifida
                                    Nipponanthemum
                                            Nipponanthemum nipponicum
                                    Nocca
                                    Nothobaccharis
                                    Nothocalais
                                            Nothocalais alpestris
                                            Nothocalais cuspidata
                                                   [Agoseris cuspidata]
                                                   [Microseris cuspidata]
                                            Nothocalais nigrescens
                                            Nothocalais troximoides
                                                   [Microseris troximoides]
                                                   [Scorzonella troximoides]
                                    Noticastrum
                                    Notoptera
                                            Notoptera scabridula
                                    Novenia
                                    Oblivia
                                    Oclemena
                                            Oclemena acuminata
                                            Oclemena nemoralis
                                            Oclemena reticulata
                                            Oclemena x blakei
                                    Odontotrichum
                                            Odontotrichum globosum
                                            Odontotrichum pachyphyllum
                                            Odontotrichum palmeri
                                    Oedera
                                    Oglifa
                                            Oglifa arvensis
                                            Oglifa minima
                                    Olearia
                                            Olearia allomii
                                            Olearia cheesmanii
                                            Olearia passerinoides
                                    Oligactis
                                    Oliganthes
                                    Oligoneuron
                                            Oligoneuron album
                                            Oligoneuron canescens
                                            Oligoneuron corymbosum
                                              Oligoneuron corymbosum var. humile
                                            Oligoneuron grandiflorum
                                            Oligoneuron houghtonii
                                            Oligoneuron jacksonii
                                            Oligoneuron nitidum
                                            Oligoneuron ohioense
                                            Oligoneuron riddellii
                                            Oligoneuron rigidum
                                              Oligoneuron rigidum var. glabratum
                                              Oligoneuron rigidum var. humile
                                              Oligoneuron rigidum var. rigidum
                                            Oligoneuron x bernardii
                                            Oligoneuron x krotkovii
                                            Oligoneuron x lutescens
                                    Oligosporus
                                            Oligosporus campestris
                                            Oligosporus groenlandicus
                                            Oligosporus pedatifidus
                                    Olivaea
                                            Olivaea leptocarpa
                                    Omalotheca
                                            Omalotheca norvegica
                                            Omalotheca supina
                                            Omalotheca sylvatica
                                    Oncosiphon
                                            Oncosiphon piluliferum
                                                   [Matricaria globifera]
                                            Oncosiphon suffruticosum
                                    Onopordum
                                            Onopordum acanthium
                                              Onopordum acanthium ssp. acanthium
                                            Onopordum illyricum
                                            Onopordum tauricum
                                    Onoseris
                                            Onoseris humboldtiana
                                            Onoseris onoseroides
                                    Oonopsis
                                            Oonopsis engelmanni
                                            Oonopsis engelmannii
                                            Oonopsis foliosa
                                              Oonopsis foliosa var. foliosa
                                              Oonopsis foliosa var. monocephala
                                            Oonopsis multicaulis
                                            Oonopsis wardii
                                    Ophryosporus
                                            Ophryosporus charua
                                            Ophryosporus paradoxus
                                            Ophryosporus triangularis
                                    Oreastrum
                                            Oreastrum elatum
                                    Oreochrysum
                                            Oreochrysum parryi
                                                   [Aster minor]
                                                   [Haplopappus parryi]
                                                   [Solidago parryi]
                                    Oreostemma
                                            Oreostemma alpigenum
                                              Oreostemma alpigenum ssp. haydenii
                                              Oreostemma alpigenum var. alpigenum
                                              Oreostemma alpigenum var. andersonii
                                              Oreostemma alpigenum var. haydenii
                                            Oreostemma elatum
                                            Oreostemma peirsonii
                                    Oriastrum
                                    Oritrophium
                                    Ormenis
                                            Ormenis mixta
                                    Orochaenactis
                                            Orochaenactis thysanocarpha
                                    Orthopappus
                                            Orthopappus angustifolius
                                    Osbertia
                                            Osbertia stolonifera
                                    Osmadenia
                                            Osmadenia tenella
                                                   [Calycadenia tenella]
                                                   [Hemizonia tenella]
                                    Osmia
                                            Osmia borinquensis
                                            Osmia corymbosa
                                            Osmia frustrata
                                            Osmia geraniifolia
                                            Osmia sinuata
                                    Osteospermum
                                            Osteospermum calendulaceum
                                            Osteospermum clandestinum
                                            Osteospermum ecklonis
                                            Osteospermum fruticosum
                                            Osteospermum hyoseroides
                                            Osteospermum imbricatum
                                            Osteospermum muricatum
                                            Osteospermum sinuatum
                                            Osteospermum spinescens
                                    Otanthus
                                            Otanthus maritimus
                                    Oteiza
                                    Othake
                                            Othake macrolepis
                                    Otopappus
                                            Otopappus acuminatus
                                            Otopappus curviflorus
                                            Otopappus microcephalus
                                            Otopappus tequilanus
                                    Oxylobus
                                            Oxylobus arbutifolius
                                            Oxylobus glanduliferus
                                    Oxypappus
                                            Oxypappus scaber
                                    Oxyphyllum
                                            Oxyphyllum ulicinum
                                    Oxytenia
                                            Oxytenia acerosa
                                                   [Iva acerosa]
                                    Oyedaea
                                    Ozothamnus
                                            Ozothamnus diosmifolius
                                    Pachylaena
                                    Packera
                                            Packera anonyma
                                            Packera antennariifolia
                                            Packera aurea
                                            Packera bellidifolia
                                            Packera bernardina
                                            Packera bolanderi
                                              Packera bolanderi var. bolanderi
                                              Packera bolanderi var. harfordii
                                            Packera breweri
                                            Packera buekii
                                            Packera cana
                                                   [Senecio canus]
                                                   [Senecio convallium]
                                                   [Senecio hallii var. discoidea]
                                                   [Senecio hallii]
                                                   [Senecio harbourii]
                                                   [Senecio howellii]
                                                   [Senecio purshianus]
                                            Packera candidissima
                                            Packera cardamine
                                                   [Senecio cardamine]
                                            Packera castoreus
                                                   [Senecio castoreus]
                                            Packera clevelandii
                                            Packera contermina
                                            Packera crocata
                                                   [Senecio crocatus var. wolfii]
                                                   [Senecio crocatus]
                                            Packera cymbalaria
                                            Packera cynthioides
                                                   [Senecio cynthioides]
                                                   [Senecio wrightii]
                                            Packera debilis
                                            Packera dimorphophylla
                                              Packera dimorphophylla ssp. dimorphophylla
                                              Packera dimorphophylla ssp. intermedia
                                              Packera dimorphophylla var. dimorphophylla
                                              Packera dimorphophylla var. intermedia
                                              Packera dimorphophylla var. paysonii
                                            Packera eurycephala
                                              Packera eurycephala var. eurycephala
                                              Packera eurycephala var. lewisrosei
                                            Packera fendleri
                                                   [Senecio fendleri var. lanatus]
                                                   [Senecio fendleri]
                                            Packera fernaldii
                                            Packera flettii
                                            Packera franciscana
                                                   [Senecio franciscanus]
                                            Packera ganderi
                                                   [Senecio ganderi]
                                            Packera glabella
                                                   [Senecio glabellus]
                                                   [Senecio lobatus]
                                            Packera greenei
                                            Packera hartiana
                                                   [Packera quaerens]
                                                   [Senecio hartianus]
                                                   [Senecio quaerens]
                                            Packera hesperia
                                            Packera hyperborealis
                                                   [Senecio hyperborealis]
                                            Packera indecora
                                            Packera ionophylla
                                            Packera layneae
                                            Packera macounii
                                            Packera malmstenii
                                            Packera mancosana
                                            Packera millefolia
                                            Packera millefolium
                                            Packera millelobata
                                                   [Senecio millelobatus]
                                            Packera moresbiensis
                                            Packera multilobata
                                                   [Senecio lynceus var. leucoreus]
                                                   [Senecio lynceus]
                                                   [Senecio multilobatus]
                                                   [Senecio stygius]
                                                   [Senecio thornberi]
                                                   [Senecio uintahensis]
                                            Packera musiniensis
                                            Packera neomexicana
                                              Packera neomexicana var. metcalfei
                                                     [Senecio metcalfei]
                                                     [Senecio neomexicanus var. metcalfei]
                                              Packera neomexicana var. mutabilis
                                                     [Senecio mutabilis]
                                                     [Senecio neomexicanus var. mutabilis]
                                              Packera neomexicana var. neomexicana
                                                     [Senecio eurypterus]
                                                     [Senecio neomexicanus var. griffithsii]
                                                     [Senecio neomexicanus var. neomexicanus]
                                                     [Senecio neomexicanus]
                                                     [Senecio oresbius]
                                                     [Senecio thurberi]
                                              Packera neomexicana var. toumeyi
                                                     [Senecio neomexicanus var. toumeyi]
                                                     [Senecio toumeyi]
                                            Packera obovata
                                                   [Senecio obovatus var. elliottii]
                                                   [Senecio obovatus var. rotundus]
                                                   [Senecio obovatus]
                                                   [Senecio rotundus]
                                            Packera ogotorukensis
                                            Packera pauciflora
                                            Packera paupercula
                                                   [Senecio balsamitae]
                                                   [Senecio crawfordii]
                                                   [Senecio gaspensis var. firmifolius]
                                                   [Senecio gaspensis]
                                                   [Senecio pauperculus var. balsamitae]
                                                   [Senecio pauperculus var. crawfordii]
                                                   [Senecio pauperculus var. firmifolius]
                                                   [Senecio pauperculus var. neoscoticus]
                                                   [Senecio pauperculus var. praelongus]
                                                   [Senecio pauperculus var. thompsoniensis]
                                                   [Senecio pauperculus]
                                                   [Senecio tweedyi]
                                            Packera plattensis
                                                   [Senecio plattensis]
                                                   [Senecio pseudotomentosus]
                                            Packera porteri
                                                   [Ligularia porteri]
                                                   [Senecio porteri]
                                            Packera pseudaurea
                                              Packera pseudaurea ssp. pseudaurea
                                                     [Senecio pseudaureus var. pseudaureus]
                                              Packera pseudaurea var. flavula
                                                     [Packera pseudaurea ssp. flavula]
                                                     [Senecio flavulus]
                                                     [Senecio pseudaureus ssp. flavulus]
                                                     [Senecio pseudaureus var. flavulus]
                                              Packera pseudaurea var. pseudaurea
                                              Packera pseudaurea var. semicordata
                                            Packera quercetorum
                                                   [Senecio quercetorum]
                                            Packera resedifolia
                                            Packera sanguisorboides
                                                   [Senecio sanguisorboides]
                                            Packera schweinitziana
                                            Packera spellenbergii
                                                   [Senecio spellenbergii]
                                            Packera streptanthifolia
                                                   [Packera cymbalarioides]
                                                   [Packera oodes]
                                                   [Packera streptanthifolia var. rubricaulis]
                                                   [Packera streptanthifolia var. streptanthifolia]
                                                   [Senecio acutidens]
                                                   [Senecio adamsii]
                                                   [Senecio aureus var. borealis]
                                                   [Senecio cymbalarioides var. borealis]
                                                   [Senecio cymbalarioides var. suksdorfii]
                                                   [Senecio cymbalarioides]
                                                   [Senecio fulgens]
                                                   [Senecio jonesii]
                                                   [Senecio laetiflorus]
                                                   [Senecio leonardii]
                                                   [Senecio longipetiolatus]
                                                   [Senecio oodes]
                                                   [Senecio pammelii]
                                                   [Senecio platylobus]
                                                   [Senecio rubricaulis]
                                                   [Senecio streptanthifolius var. borealis]
                                                   [Senecio streptanthifolius var. kluanei]
                                                   [Senecio streptanthifolius var. laetiflorus]
                                                   [Senecio streptanthifolius var. oodes]
                                                   [Senecio streptanthifolius var. rubricaulis]
                                                   [Senecio streptanthifolius var. wallowensis]
                                                   [Senecio streptanthifolius]
                                                   [Senecio subcuneatus]
                                                   [Senecio suksdorfii]
                                                   [Senecio wardii]
                                            Packera subnuda
                                              Packera subnuda var. moresbiensis
                                              Packera subnuda var. subnuda
                                            Packera tampicana
                                                   [Senecio greggii]
                                                   [Senecio imparipinnatus]
                                                   [Senecio tampicanus]
                                            Packera texensis
                                            Packera tomentosa
                                                   [Senecio alabamensis]
                                                   [Senecio tomentosus]
                                            Packera tridenticulata
                                                   [Senecio densus]
                                                   [Senecio manitobensis]
                                                   [Senecio tridenticulatus]
                                            Packera umbraculifera
                                            Packera werneriifolia
                                                   [Packera werneriifolia var. alpina]
                                                   [Senecio aureus var. werneriifolius]
                                                   [Senecio molinarius]
                                                   [Senecio muirii]
                                                   [Senecio saxosus var. toiyabensis]
                                                   [Senecio saxosus]
                                                   [Senecio werneriifolius var. alpinus]
                                                   [Senecio werneriifolius var. incertus]
                                                   [Senecio werneriifolius]
                                    Pacourina
                                    Palafoxia
                                            Palafoxia arida
                                              Palafoxia arida var. arida
                                              Palafoxia arida var. gigantea
                                                     [Palafoxia linearis var. gigantea]
                                            Palafoxia callosa
                                                   [Othake callosa]
                                                   [Palafoxia callosa var. bella]
                                                   [Polypteris callosa]
                                            Palafoxia feayi
                                            Palafoxia hookeriana
                                              Palafoxia hookeriana var. hookeriana
                                              Palafoxia hookeriana var. minor
                                            Palafoxia integrifolia
                                            Palafoxia lindenii
                                            Palafoxia linearis
                                              Palafoxia linearis var. glandulosa
                                              Palafoxia linearis var. leucophylla
                                                     [Palafoxia leucophylla]
                                              Palafoxia linearis var. linearis
                                            Palafoxia macrolepis
                                            Palafoxia reverchonii
                                            Palafoxia riograndensis
                                            Palafoxia rosea
                                              Palafoxia rosea var. ambigua
                                              Palafoxia rosea var. macrolepis
                                              Palafoxia rosea var. papposa
                                              Palafoxia rosea var. rosea
                                            Palafoxia sphacelata
                                                   [Othake sphacelata]
                                                   [Polypteris sphacelata]
                                            Palafoxia texana
                                              Palafoxia texana var. ambigua
                                              Palafoxia texana var. macrolepis
                                              Palafoxia texana var. texana
                                    Pallenis
                                            Pallenis spinosa
                                    Pappobolus
                                    Paracalia
                                    Paragynoxys
                                    Paranephelius
                                    Parasenecio
                                            Parasenecio auriculatus
                                    Parastrephia
                                    Parthenice
                                            Parthenice mollis
                                              Parthenice mollis var. mollis
                                              Parthenice mollis var. peninsularis
                                    Parthenium
                                            Parthenium alpinum
                                                   [Bolophyta alpina]
                                            Parthenium argentatum
                                            Parthenium auriculatum
                                            Parthenium bipinnatifidum
                                            Parthenium confertum
                                              Parthenium confertum var. confertum
                                              Parthenium confertum var. divaricatum
                                              Parthenium confertum var. intermedium
                                              Parthenium confertum var. lyratum
                                                     [Parthenium hysterophorus var. lyratum]
                                                     [Parthenium lyratum]
                                              Parthenium confertum var. microcephalum
                                            Parthenium fruticosum
                                            Parthenium hispidum
                                                   [Parthenium integrifolium var. hispidum]
                                                   [Parthenium repens]
                                              Parthenium hispidum var. auriculatum
                                            Parthenium hysterophorus
                                                   [Parthenium lobatum]
                                            Parthenium incanum
                                            Parthenium integrifolium
                                              Parthenium integrifolium var. auriculatum
                                              Parthenium integrifolium var. henryanum
                                              Parthenium integrifolium var. integrifolium
                                              Parthenium integrifolium var. mabryanum
                                            Parthenium ligulatum
                                                   [Bolophyta ligulata]
                                                   [Parthenium alpinum var. ligulatum]
                                            Parthenium lozanianum
                                            Parthenium radfordii
                                            Parthenium rollinsianum
                                            Parthenium schottii
                                            Parthenium tetraneuris
                                                   [Bolophyta tetraneuris]
                                                   [Parthenium alpinum var. tetraneuris]
                                            Parthenium tomentosum
                                              Parthenium tomentosum var. stramonium
                                                     [Parthenium stramonium]
                                    Pascalia
                                            Pascalia glauca
                                    Pectis
                                            Pectis ambigua
                                            Pectis angustifolia
                                              Pectis angustifolia var. angustifolia
                                              Pectis angustifolia var. fastigiata
                                              Pectis angustifolia var. tenella
                                                     [Pectis tenella]
                                            Pectis aquatica
                                            Pectis arenaria
                                            Pectis barberi
                                            Pectis berlandieri
                                              Pectis berlandieri var. palmeri
                                            Pectis bonplandiana
                                            Pectis canescens
                                            Pectis capillaris
                                            Pectis carthusianorum
                                            Pectis ciliaris
                                            Pectis coulteri
                                            Pectis cylindrica
                                                   [Pectis postrata var. cylindrica]
                                                   [Pectis prostrata var. cylindrica]
                                            Pectis decemcarinata
                                            Pectis diffusa
                                            Pectis elongata
                                              Pectis elongata var. floribunda
                                            Pectis exilis
                                            Pectis exserta
                                            Pectis febrifuga
                                            Pectis filipes
                                              Pectis filipes var. filipes
                                              Pectis filipes var. subnuda
                                            Pectis floribunda
                                            Pectis glaucescens
                                            Pectis haenkeana
                                            Pectis holochaeta
                                              Pectis holochaeta var. cana
                                            Pectis humifusa
                                            Pectis imberbis
                                            Pectis incisifolia
                                            Pectis latisquama
                                            Pectis leptocephala
                                            Pectis linearifolia
                                            Pectis linearis
                                            Pectis linifolia
                                              Pectis linifolia var. hirtella
                                              Pectis linifolia var. linifolia
                                              Pectis linifolia var. marginalis
                                            Pectis longipes
                                            Pectis mearnsii
                                            Pectis multiflosculosa
                                            Pectis multiseta
                                              Pectis multiseta var. ambigua
                                            Pectis odorata
                                            Pectis papposa
                                              Pectis papposa var. grandis
                                              Pectis papposa var. papposa
                                            Pectis pimana
                                            Pectis portoricensis
                                            Pectis pringlei
                                            Pectis propetes
                                            Pectis prostrata
                                                   [Pectis multisetosa]
                                                   [Pectis prostrata var. urceolata]
                                            Pectis purpurea
                                              Pectis purpurea var. sonorae
                                            Pectis rusbyi
                                                   [Pectis palmeri]
                                            Pectis sinaloensis
                                            Pectis stenophylla
                                              Pectis stenophylla var. gentryi
                                              Pectis stenophylla var. rosei
                                              Pectis stenophylla var. stenophylla
                                            Pectis taxifolia
                                            Pectis tenuicaulis
                                            Pectis texana
                                            Pectis uniaristata
                                              Pectis uniaristata var. holostemma
                                              Pectis uniaristata var. jangadensis
                                              Pectis uniaristata var. uniaristata
                                            Pectis vandevenderi
                                            Pectis vollmeri
                                            Pectis x floridana
                                    Pelucha
                                            Pelucha trifida
                                    Pentacalia
                                    Pentachaeta
                                            Pentachaeta alsinoides
                                            Pentachaeta aphantochaeta
                                            Pentachaeta aurea
                                            Pentachaeta bellidiflora
                                            Pentachaeta exilis
                                              Pentachaeta exilis ssp. aeolica
                                              Pentachaeta exilis ssp. exilis
                                              Pentachaeta exilis var. aphantochaeta
                                              Pentachaeta exilis var. discoidea
                                              Pentachaeta exilis var. grayi
                                            Pentachaeta fragilis
                                            Pentachaeta laxa
                                            Pentachaeta lyonii
                                            Pentachaeta orcuttii
                                            Pentachaeta paleacea
                                    Pentzia
                                            Pentzia incana
                                                   [Pentzia virgata]
                                            Pentzia lanata
                                            Pentzia sphaerocephala
                                    Perdicium
                                    Perezia
                                            Perezia capitata
                                            Perezia cuernavacana
                                            Perezia hooveri
                                            Perezia lozani
                                            Perezia multiflora
                                              Perezia multiflora ssp. sonchifolia
                                            Perezia palmeri
                                            Perezia paniculata
                                            Perezia recurvata
                                            Perezia sonchifolia
                                    Pereziopsis
                                    Pericallis
                                            Pericallis hybrida
                                    Pericome
                                            Pericome caudata
                                                   [Pericome caudata var. glandulosa]
                                                   [Pericome glandulosa]
                                    Perityle
                                            Perityle aglossa
                                            Perityle ajoensis
                                            Perityle alamosana
                                            Perityle ambrosiifolia
                                            Perityle angustifolia
                                            Perityle aurea
                                            Perityle batopilensis
                                            Perityle bisetosa
                                              Perityle bisetosa var. appressa
                                              Perityle bisetosa var. bisetosa
                                              Perityle bisetosa var. scalaris
                                              Perityle bisetosa var. spathulata
                                            Perityle californica
                                                   [Perityle plumigera]
                                            Perityle canescens
                                            Perityle carmenensis
                                            Perityle cernua
                                                   [Laphamia cernua]
                                            Perityle ciliata
                                            Perityle cinerea
                                            Perityle coahuilensis
                                            Perityle cochisensis
                                                   [Laphamia cochisensis]
                                            Perityle congesta
                                                   [Laphamia congesta]
                                            Perityle cordifolia
                                            Perityle coronopifolia
                                            Perityle crassifolia
                                              Perityle crassifolia var. robusta
                                            Perityle cuneata
                                            Perityle dissecta
                                            Perityle emoryi
                                                   [Perityle emoryi var. nuda]
                                            Perityle fosteri
                                            Perityle gentryi
                                            Perityle gilensis
                                              Perityle gilensis var. gilensis
                                                     [Laphamia gilensis]
                                              Perityle gilensis var. salensis
                                                     [Laphamia gilensis ssp. longilobus]
                                            Perityle gracilis
                                                   [Laphamia fastigiata]
                                                   [Laphamia gracilis]
                                                   [Perityle fastigiata]
                                            Perityle greenei
                                            Perityle halimifolia
                                            Perityle huecoensis
                                            Perityle incana
                                            Perityle incompta
                                            Perityle intricata
                                                   [Laphamia intricata]
                                                   [Laphamia megalocephala ssp. intricata]
                                                   [Perityle megalocephala var. intricata]
                                            Perityle inyoensis
                                            Perityle jaliscana
                                            Perityle lemmonii
                                            Perityle leptoglossa
                                              Perityle leptoglossa ssp. leptoglossa
                                              Perityle leptoglossa ssp. palmeri
                                            Perityle lindheimeri
                                              Perityle lindheimeri var. halimifolia
                                              Perityle lindheimeri var. lindheimeri
                                            Perityle lloydii
                                            Perityle lobata
                                            Perityle megalocephala
                                              Perityle megalocephala var. megalocephala
                                              Perityle megalocephala var. oligophylla
                                            Perityle microcephala
                                            Perityle microglossa
                                                   [Perityle spilanthoides]
                                              Perityle microglossa var. microglossa
                                              Perityle microglossa var. saxosa
                                            Perityle montana
                                            Perityle nuda
                                            Perityle palmeri
                                            Perityle parryi
                                            Perityle quinqueflora
                                                   [Laphamia quinqueflora]
                                            Perityle reinana
                                            Perityle rotundata
                                            Perityle rupestris
                                              Perityle rupestris var. albiflora
                                              Perityle rupestris var. rupestris
                                            Perityle saxicola
                                                   [Laphamia saxicola]
                                            Perityle specuicola
                                            Perityle stansburii
                                                   [Laphamia stansburii]
                                                   [Laphamia stansburyi]
                                                   [Perityle stansburyi]
                                            Perityle staurophylla
                                              Perityle staurophylla var. homoflora
                                              Perityle staurophylla var. staurophylla
                                            Perityle tenella
                                                   [Laphamia palmeri var. tenella]
                                                   [Laphamia palmeri]
                                            Perityle trichodonta
                                            Perityle turneri
                                            Perityle vandevenderi
                                            Perityle vaseyi
                                            Perityle vigilans
                                            Perityle villosa
                                            Perityle vitreomontana
                                            Perityle warnockii
                                    Perymenium
                                            Perymenium basaseachicanum
                                            Perymenium buphthalmoides
                                              Perymenium buphthalmoides var. sonoranum
                                              Perymenium buphthalmoides var. tenellum
                                            Perymenium cualense
                                            Perymenium discolor
                                            Perymenium ghiesbreghtii
                                            Perymenium globosum
                                            Perymenium gracile
                                            Perymenium lancifolium
                                            Perymenium macrocephalum
                                            Perymenium mendezii
                                              Perymenium mendezii var. angustifolium
                                              Perymenium mendezii var. mendezii
                                              Perymenium mendezii var. verbesinoides
                                            Perymenium oxycarphum
                                            Perymenium pringlei
                                              Perymenium pringlei var. croceum
                                              Perymenium pringlei var. lancifolium
                                            Perymenium purpusii
                                            Perymenium stenophyllum
                                            Perymenium uxoris
                                            Perymenium wilburorum
                                    Petasites
                                            Petasites alaskanus
                                            Petasites arcticus
                                            Petasites corymbosus
                                            Petasites dentatus
                                            Petasites frigidus
                                              Petasites frigidus ssp. arcticus
                                              Petasites frigidus ssp. nivalis
                                              Petasites frigidus ssp. palmatus
                                              Petasites frigidus var. corymbosus
                                              Petasites frigidus var. frigidus
                                              Petasites frigidus var. hyperboreoides
                                              Petasites frigidus var. nivalis
                                              Petasites frigidus var. palmatus
                                              Petasites frigidus var. sagittatus
                                              Petasites frigidus var. vitifolius
                                              Petasites frigidus var. x_vitifolius
                                            Petasites gracilis
                                            Petasites hookerianus
                                            Petasites hybridus
                                            Petasites hyperboreus
                                            Petasites japonicus
                                            Petasites nivalis
                                              Petasites nivalis ssp. vitifolius
                                            Petasites officinalis
                                            Petasites palmata
                                            Petasites palmatus
                                              Petasites palmatus var. frigidus
                                            Petasites sagittatus
                                            Petasites speciosus
                                            Petasites trigonophylla
                                            Petasites vulgaris
                                            Petasites warrenii
                                            Petasites x vitifolius
                                    Peteravenia
                                    Peucephyllum
                                            Peucephyllum schottii
                                              Peucephyllum schottii var. latisetum
                                    Phaenocoma
                                            Phaenocoma prolifera
                                    Phaethusa
                                            Phaethusa helianthoides
                                            Phaethusa laciniata
                                            Phaethusa occidentalis
                                            Phaethusa virginica
                                    Phagnalon
                                            Phagnalon kotschyi
                                    Phalacraea
                                    Phalacroseris
                                            Phalacroseris bolanderi
                                              Phalacroseris bolanderi var. bolanderi
                                              Phalacroseris bolanderi var. coronata
                                    Philoglossa
                                    Phoebanthus
                                            Phoebanthus grandiflorus
                                            Phoebanthus tenuifolius
                                    Phymaspermum
                                           [Valerioa]
                                            Phymaspermum parvifolium
                                    Picradenia
                                            Picradenia biennis
                                            Picradenia earlei
                                            Picradenia lemmonii
                                            Picradenia richardsonii
                                    Picradeniopsis
                                            Picradeniopsis oppositifolia
                                                   [Bahia oppositifolia]
                                            Picradeniopsis woodhousei
                                                   [Bahia woodhousei]
                                            Picradeniopsis woodhousii
                                    Picris
                                            Picris echioides
                                            Picris hieracioides
                                              Picris hieracioides ssp. hieracioides
                                              Picris hieracioides ssp. kamtschatica
                                              Picris hieracioides var. alpina
                                            Picris kamtschatica
                                            Picris pauciflora
                                            Picris rhagadioloides
                                            Picris sprengeriana
                                    Picrosia
                                    Picrothamnus
                                            Picrothamnus desertorum
                                                   [Artemisia spinescens]
                                    Pilosella
                                           [Vestia]
                                            Pilosella novae-angliae
                                            Pilosella richardsonii
                                    Pinaropappus
                                            Pinaropappus junceus
                                            Pinaropappus parvus
                                            Pinaropappus pooleanus
                                            Pinaropappus roseus
                                              Pinaropappus roseus var. foliosus
                                              Pinaropappus roseus var. maculatus
                                              Pinaropappus roseus var. roseus
                                            Pinaropappus spathulatus
                                              Pinaropappus spathulatus var. chiapensis
                                    Pingraea
                                    Pippenalia
                                            Pippenalia delphinifolia
                                    Piptocarpha
                                            Piptocarpha tetrantha
                                    Piptocoma
                                            Piptocoma acevedoi
                                            Piptocoma antillana
                                            Piptocoma discolor
                                    Piptothrix
                                            Piptothrix areolare
                                            Piptothrix palmeri
                                            Piptothrix pubens
                                    Piqueria
                                            Piqueria laxiflora
                                            Piqueria pilosa
                                            Piqueria triflora
                                            Piqueria trinervia
                                    Pityopsis
                                            Pityopsis adenolepis
                                            Pityopsis aspera
                                              Pityopsis aspera var. adenolepis
                                              Pityopsis aspera var. aspera
                                            Pityopsis falcata
                                            Pityopsis flexuosa
                                            Pityopsis graminifolia
                                              Pityopsis graminifolia var. aequilifolia
                                              Pityopsis graminifolia var. graminifolia
                                              Pityopsis graminifolia var. latifolia
                                              Pityopsis graminifolia var. microcephala
                                              Pityopsis graminifolia var. tenuifolia
                                              Pityopsis graminifolia var. tracyi
                                            Pityopsis microcephala
                                            Pityopsis oligantha
                                            Pityopsis pinifolia
                                            Pityopsis ruthii
                                            Pityopsis tracyi
                                    Plagiocheilus
                                    Plateilema
                                            Plateilema palmeri
                                    Platyschkuhria
                                            Platyschkuhria integrifolia
                                              Platyschkuhria integrifolia var. desertorum
                                                     [Bahia nudicaulis var. desertorum]
                                              Platyschkuhria integrifolia var. integrifolia
                                              Platyschkuhria integrifolia var. oblongifolia
                                                     [Bahia nudicaulis var. oblongifolia]
                                                     [Bahia oblongifolia]
                                                     [Platyschkuhria oblongifolia]
                                              Platyschkuhria integrifolia var. ourolepis
                                                     [Bahia nudicaulis var. ourolepis]
                                                     [Bahia ourolepis]
                                    Plazia
                                            Plazia daphnoides
                                    Plectocephalus
                                            Plectocephalus americanus
                                            Plectocephalus rothrockii
                                    Pleiacanthus
                                            Pleiacanthus spinosus
                                                   [Stephanomeria spinosa]
                                    Pleocarphus
                                            Pleocarphus revolutus
                                    Pleurocoronis
                                            Pleurocoronis gentryi
                                            Pleurocoronis laphamioides
                                                   [Hofmeisteria laphamioides]
                                            Pleurocoronis pluriseta
                                                   [Hofmeisteria pluriseta]
                                    Pluchea
                                            Pluchea absinthioides
                                            Pluchea adnata
                                              Pluchea adnata var. parvifolia
                                            Pluchea baccharis
                                            Pluchea camphorata
                                                   [Pluchea petiolata]
                                                   [Pluchea viscida]
                                            Pluchea carolinensis
                                                   [Conyza carolinensis]
                                                   [Conyza cortesii]
                                                   [Pluchea cortesii]
                                                   [Pluchea symphytifolia]
                                                   [Pluchea x fosbergii]
                                            Pluchea chingoyo
                                            Pluchea foetida
                                              Pluchea foetida var. foetida
                                              Pluchea foetida var. imbricata
                                            Pluchea imbricata
                                            Pluchea indica
                                            Pluchea longifolia
                                            Pluchea odorata
                                              Pluchea odorata var. odorata
                                                     [Conyza odorata]
                                                     [Pluchea purpurascens var. purpurascens]
                                                     [Pluchea purpurascens var. succulenta]
                                                     [Pluchea purpurascens]
                                              Pluchea odorata var. succulenta
                                            Pluchea quitoc
                                            Pluchea rosea
                                            Pluchea sagittalis
                                            Pluchea salicifolia
                                            Pluchea sericea
                                                   [Berthelotia sericea]
                                                   [Polypappus sericeus]
                                                   [Tessaria sericea]
                                            Pluchea suaveolens
                                            Pluchea subdecurrens
                                            Pluchea tenuifolia
                                            Pluchea yucatanensis
                                    Plummera
                                    Podachaenium
                                            Podachaenium chiapanum
                                            Podachaenium eminens
                                    Podanthus
                                            Podanthus mitiqui
                                            Podanthus ovatifolius
                                    Podocoma
                                            Podocoma hieracifolia
                                    Podospermum
                                    Pollalesta
                                    Polyachyrus
                                            Polyachyrus fuscus
                                    Polyanthina
                                    Polymnia
                                            Polymnia canadensis
                                                   [Polymnia canadensis var. radiata]
                                                   [Polymnia radiata]
                                            Polymnia cossatotensis
                                            Polymnia laevigata
                                            Polymnia nervata
                                            Polymnia sonchifolia
                                    Polypappus
                                    Polypteris
                                            Polypteris hookeriana
                                            Polypteris integrifolia
                                            Polypteris rosea
                                    Porophyllum
                                            Porophyllum calcicola
                                            Porophyllum coloratum
                                            Porophyllum confertum
                                            Porophyllum crassifolium
                                            Porophyllum gracile
                                                   [Porophyllum caesium]
                                                   [Porophyllum junciforme]
                                                   [Porophyllum nodosum]
                                                   [Porophyllum putidum]
                                                   [Porophyllum vaseyi]
                                            Porophyllum greggii
                                            Porophyllum leiocarpum
                                                   [Porophyllum macrocephalum var. leiocarpum]
                                            Porophyllum linaria
                                            Porophyllum lindenii
                                            Porophyllum maritimum
                                            Porophyllum pausodynum
                                            Porophyllum pinifolium
                                            Porophyllum porfyreum
                                            Porophyllum porophyllum
                                            Porophyllum pringlei
                                            Porophyllum punctatum
                                            Porophyllum pygmaeum
                                            Porophyllum ruderale
                                                   [Porophyllum ellipticum]
                                              Porophyllum ruderale ssp. ruderale
                                              Porophyllum ruderale var. macrocephalum
                                                     [Porophyllum ruderale ssp. macrocephalum]
                                            Porophyllum scoparium
                                            Porophyllum seemannii
                                            Porophyllum tagetoides
                                            Porophyllum tridentatum
                                            Porophyllum viridiflorum
                                    Praxeliopsis
                                    Praxelis
                                    Prenanthella
                                            Prenanthella exigua
                                                   [Lygodesmia exigua]
                                    Prenanthes
                                            Prenanthes alata
                                                   [Prenanthes lessingii]
                                              Prenanthes alata var. sagittata
                                            Prenanthes alba
                                            Prenanthes altissima
                                                   [Nabalus altissimus]
                                                   [Prenanthes altissima var. cinnamomea]
                                            Prenanthes aspera
                                            Prenanthes autumnalis
                                            Prenanthes barbata
                                            Prenanthes boottii
                                            Prenanthes carrii
                                            Prenanthes crepidinea
                                            Prenanthes cylindrica
                                            Prenanthes exigua
                                            Prenanthes integrifolia
                                            Prenanthes nana
                                            Prenanthes racemosa
                                              Prenanthes racemosa ssp. multiflora
                                              Prenanthes racemosa ssp. racemosa
                                              Prenanthes racemosa var. multiflora
                                              Prenanthes racemosa var. pinnatifida
                                              Prenanthes racemosa var. racemosa
                                            Prenanthes roanensis
                                            Prenanthes sagittata
                                            Prenanthes serpentaria
                                              Prenanthes serpentaria var. barbata
                                            Prenanthes trifoliolata
                                              Prenanthes trifoliolata var. nana
                                            Prenanthes virgata
                                            Prenanthes x mainensis
                                    Prionopsis
                                    Proustia
                                            Proustia cuneifolia
                                            Proustia krugiana
                                            Proustia pyrifolia
                                            Proustia vanillosma
                                    Psacalium
                                            Psacalium amplifolium
                                            Psacalium argutum
                                            Psacalium brachycomum
                                            Psacalium cirsiifolium
                                            Psacalium decompositum
                                                   [Cacalia decomposita]
                                                   [Odontotrichum decompositum]
                                            Psacalium globosum
                                            Psacalium holwayanum
                                            Psacalium napellifolium
                                            Psacalium pachyphyllum
                                            Psacalium palmeri
                                            Psacalium peltatum
                                            Psacalium poculiferum
                                            Psacalium pringlei
                                            Psacalium radulifolium
                                            Psacalium sinuatum
                                            Psacalium tussilaginoides
                                    Psathyrotes
                                            Psathyrotes annua
                                                   [Bulbostylis annua]
                                            Psathyrotes pilifera
                                            Psathyrotes ramosissima
                                                   [Tetradymia ramosissima]
                                    Psathyrotopsis
                                            Psathyrotopsis hintoniorum
                                            Psathyrotopsis scaposa
                                                   [Psathyrotes scaposa]
                                    Psephellus
                                            Psephellus leucophyllus
                                            Psephellus somcheticus
                                    Pseudelephantopus
                                            Pseudelephantopus spicatus
                                            Pseudelephantopus spirilis
                                    Pseudobaccharis
                                    Pseudobahia
                                            Pseudobahia bahiifolia
                                              Pseudobahia bahiifolia var. pinnatifida
                                            Pseudobahia heermannii
                                            Pseudobahia peirsonii
                                    Pseudoclappia
                                            Pseudoclappia arenaria
                                            Pseudoclappia watsonii
                                    Pseudoconyza
                                            Pseudoconyza lyrata
                                            Pseudoconyza viscosa
                                    Pseudognaphalium
                                            Pseudognaphalium affine
                                            Pseudognaphalium arizonicum
                                                   [Gnaphalium arizonicum]
                                            Pseudognaphalium attenuatum
                                                   [Gnaphalium attenuatum var. sylvicola]
                                                   [Gnaphalium attenuatum]
                                            Pseudognaphalium austrotexanum
                                            Pseudognaphalium beneolens
                                            Pseudognaphalium biolettii
                                                   [Gnaphalium bicolor]
                                                   [Pseudognaphalium bicolor]
                                            Pseudognaphalium brachypterum
                                            Pseudognaphalium californicum
                                                   [Gnaphalium californicum]
                                            Pseudognaphalium canescens
                                                   [Gnaphalium canescens]
                                                   [Gnaphalium wrightii]
                                              Pseudognaphalium canescens ssp. beneolens
                                              Pseudognaphalium canescens ssp. canescens
                                                     [Gnaphalium canescens ssp. canescens]
                                              Pseudognaphalium canescens ssp. thermale
                                            Pseudognaphalium chartaceum
                                            Pseudognaphalium domingense
                                            Pseudognaphalium elegans
                                            Pseudognaphalium helleri
                                              Pseudognaphalium helleri ssp. helleri
                                              Pseudognaphalium helleri ssp. micradenium
                                            Pseudognaphalium jaliscense
                                                   [Gnaphalium jaliscense]
                                            Pseudognaphalium leucocephalum
                                                   [Gnaphalium leucocephalum]
                                            Pseudognaphalium luteoalbum
                                                   [Gnaphalium luteo-album]
                                                   [Gnaphalium luteoalbum]
                                            Pseudognaphalium macounii
                                                   [Gnaphalium decurrens]
                                                   [Gnaphalium macounii]
                                            Pseudognaphalium micradenium
                                            Pseudognaphalium microcephalum
                                                   [Pseudognaphalium canescens ssp. microcephalum]
                                            Pseudognaphalium obtusifolium
                                              Pseudognaphalium obtusifolium ssp. obtusifolium
                                              Pseudognaphalium obtusifolium ssp. praecox
                                              Pseudognaphalium obtusifolium ssp. saxicola
                                            Pseudognaphalium pringlei
                                                   [Gnaphalium pringlei]
                                                   [Pseudognaphalium priscum]
                                            Pseudognaphalium ramosissimum
                                            Pseudognaphalium roseum
                                                   [Gnaphalium roseum]
                                            Pseudognaphalium sandwicensium
                                              Pseudognaphalium sandwicensium ssp. hawaiiense
                                              Pseudognaphalium sandwicensium ssp. kilaueanum
                                              Pseudognaphalium sandwicensium ssp. molokaiense
                                              Pseudognaphalium sandwicensium ssp. sandwicensium
                                              Pseudognaphalium sandwicensium var. hawaiiense
                                              Pseudognaphalium sandwicensium var. kilaueanum
                                              Pseudognaphalium sandwicensium var. molokaiense
                                              Pseudognaphalium sandwicensium var. sandwicensium
                                            Pseudognaphalium saxicola
                                            Pseudognaphalium semilanatum
                                            Pseudognaphalium stramineum
                                                   [Gnaphalium chilense var. confertifolium]
                                                   [Gnaphalium chilense]
                                                   [Gnaphalium stramineum]
                                            Pseudognaphalium thermale
                                                   [Pseudognaphalium microcephalum var. thermale]
                                            Pseudognaphalium viscosum
                                                   [Gnaphalium viscosum]
                                    Pseudogynoxys
                                            Pseudogynoxys berlandieri
                                            Pseudogynoxys chenopodioides
                                    Pseudokyrsteniopsis
                                    Pseudonoseris
                                    Psila
                                            Psila spartioides
                                            Psila tenella
                                    Psilactis
                                            Psilactis brevilingulata
                                                   [Machaeranthera brevilingulata]
                                            Psilactis gentryi
                                                   [Machaeranthera mexicana]
                                            Psilactis heterocarpa
                                            Psilactis tenuis
                                                   [Machaeranthera tenuis]
                                    Psilocarphus
                                            Psilocarphus brevissimus
                                              Psilocarphus brevissimus var. brevissimus
                                              Psilocarphus brevissimus var. multiflorus
                                            Psilocarphus caulescens
                                            Psilocarphus chilensis
                                            Psilocarphus elatior
                                            Psilocarphus globiferus
                                            Psilocarphus oregonus
                                            Psilocarphus tenellus
                                              Psilocarphus tenellus var. globiferus
                                              Psilocarphus tenellus var. tenellus
                                              Psilocarphus tenellus var. tenuis
                                    Psilochenia
                                            Psilochenia atribarba
                                            Psilochenia bakeri
                                              Psilochenia bakeri ssp. cusickii
                                              Psilochenia bakeri ssp. idahoensis
                                            Psilochenia modocensis
                                              Psilochenia modocensis ssp. glareosa
                                              Psilochenia modocensis ssp. rostrata
                                              Psilochenia modocensis ssp. subacaulis
                                            Psilochenia monticola
                                            Psilochenia pleurocarpa
                                            Psilochenia runcinata
                                              Psilochenia runcinata ssp. andersonii
                                              Psilochenia runcinata ssp. hallii
                                              Psilochenia runcinata ssp. hispidulosa
                                              Psilochenia runcinata ssp. imbricata
                                    Psilostrophe
                                            Psilostrophe bakeri
                                            Psilostrophe cooperi
                                                   [Riddellia cooperi]
                                            Psilostrophe divaricata
                                            Psilostrophe gnaphalioides
                                            Psilostrophe gnaphalodes
                                            Psilostrophe grandiflora
                                            Psilostrophe hartmanii
                                            Psilostrophe mexicana
                                            Psilostrophe sparsiflora
                                                   [Riddellia tagetina var. sparsiflora]
                                            Psilostrophe tagetina
                                              Psilostrophe tagetina var. tagetina
                                                     [Psilostrophe tagetina var. grandiflora]
                                                     [Psilostrophe tagetina var. lanata]
                                                     [Riddellia tagetina]
                                            Psilostrophe villosa
                                                   [Psilostrophe tagetina var. cerifera]
                                    Pterocaulon
                                            Pterocaulon alopecuroideum
                                            Pterocaulon alopecuroidies
                                            Pterocaulon angustifolium
                                            Pterocaulon purpurascens
                                            Pterocaulon pycnostachyum
                                            Pterocaulon undulatum
                                            Pterocaulon virgatum
                                    Pteronia
                                            Pteronia adenocarpa
                                    Pterophyton
                                            Pterophyton aristatum
                                            Pterophyton helianthoides
                                            Pterophyton heterophyllum
                                            Pterophyton pauciflorum
                                    Ptilocalais
                                            Ptilocalais macrolepis
                                            Ptilocalais major
                                    Ptilomeris
                                            Ptilomeris mutica
                                    Ptiloria
                                            Ptiloria neomexicana
                                            Ptiloria ramosa
                                    Pugiopappus
                                    Pulicaria
                                            Pulicaria arabica
                                            Pulicaria crispa
                                            Pulicaria desertorum
                                            Pulicaria dysenterica
                                                   [Inula dysenterica]
                                            Pulicaria paludosa
                                                   [Pulicaria hispanica]
                                    Pyrethrum
                                            Pyrethrum anethifolium
                                            Pyrethrum cinerariifolium
                                    Pyrrhopappus
                                            Pyrrhopappus carolinianus
                                                   [Pyrrhopappus carolinianus var. georgianus]
                                                   [Pyrrhopappus georgianus]
                                                   [Sitilias caroliniana]
                                            Pyrrhopappus grandiflorus
                                                   [Pyrrhopappus scaposus]
                                                   [Sitilias grandiflora]
                                            Pyrrhopappus pauciflorus
                                                   [Pyrrhopappus geiseri]
                                                   [Pyrrhopappus multicaulis var. geiseri]
                                                   [Pyrrhopappus multicaulis]
                                                   [Sitilias multicaulis]
                                            Pyrrhopappus rothrockii
                                    Pyrrocoma
                                            Pyrrocoma adsurgens
                                            Pyrrocoma amplectens
                                            Pyrrocoma apargioides
                                            Pyrrocoma carthamoides
                                              Pyrrocoma carthamoides var. carthamoides
                                              Pyrrocoma carthamoides var. cusickii
                                                     [Haplopappus carthamoides ssp. cusickii]
                                                     [Haplopappus carthamoides var. cusickii]
                                              Pyrrocoma carthamoides var. subsquarrosa
                                            Pyrrocoma clementis
                                              Pyrrocoma clementis var. clementis
                                              Pyrrocoma clementis var. villosa
                                            Pyrrocoma congesta
                                            Pyrrocoma crocea
                                              Pyrrocoma crocea var. crocea
                                              Pyrrocoma crocea var. genuflexa
                                                     [Haplopappus croceus var. genuflexus]
                                                     [Pyrrocoma genuflexa]
                                            Pyrrocoma elata
                                            Pyrrocoma gossypina
                                            Pyrrocoma hirta
                                              Pyrrocoma hirta var. hirta
                                              Pyrrocoma hirta var. lanulosa
                                              Pyrrocoma hirta var. sonchifolia
                                            Pyrrocoma insecticruris
                                            Pyrrocoma integrifolia
                                            Pyrrocoma inuloides
                                                   [Haplopappus inuloides]
                                            Pyrrocoma lanceolata
                                              Pyrrocoma lanceolata var. lanceolata
                                              Pyrrocoma lanceolata var. subviscosa
                                            Pyrrocoma lanulosa
                                            Pyrrocoma liatriformis
                                            Pyrrocoma linearis
                                            Pyrrocoma lucida
                                            Pyrrocoma prionophylla
                                            Pyrrocoma racemosa
                                              Pyrrocoma racemosa var. congesta
                                              Pyrrocoma racemosa var. paniculata
                                                     [Haplopappus paniculatus var. virgatus]
                                                     [Haplopappus racemosus ssp. brachycephalus]
                                                     [Haplopappus racemosus ssp. duriuscula]
                                                     [Haplopappus racemosus ssp. glomeratus]
                                                     [Haplopappus racemosus ssp. halophilus]
                                                     [Haplopappus racemosus ssp. prionophyllus]
                                                     [Haplopappus racemosus var. glomerellus]
                                                     [Haplopappus racemosus var. paniculatus]
                                                     [Haplopappus racemosus var. prionophyllus]
                                              Pyrrocoma racemosa var. pinetorum
                                              Pyrrocoma racemosa var. racemosa
                                              Pyrrocoma racemosa var. sessiliflora
                                                     [Haplopappus racemosus ssp. sessiliflorus]
                                                     [Haplopappus racemosus var. sessiliflorus]
                                                     [Pyrrocoma sessiliflora]
                                            Pyrrocoma radiata
                                            Pyrrocoma sonchifolia
                                            Pyrrocoma subcaesia
                                            Pyrrocoma subsquarrosa
                                            Pyrrocoma subviscosa
                                            Pyrrocoma uniflora
                                              Pyrrocoma uniflora var. gossypina
                                              Pyrrocoma uniflora var. uniflora
                                                     [Haplopappus contractus]
                                                     [Haplopappus uniflorus ssp. gossypinus]
                                                     [Haplopappus uniflorus ssp. howellii]
                                                     [Haplopappus uniflorus ssp. linearis]
                                                     [Haplopappus uniflorus ssp. typicus]
                                                     [Haplopappus uniflorus var. howellii]
                                                     [Haplopappus uniflorus]
                                                     [Pyrrocoma howellii]
                                            Pyrrocoma villosa
                                    Quechualia
                                    Rafinesquia
                                            Rafinesquia californica
                                            Rafinesquia neomexicana
                                    Raillardella
                                            Raillardella argentea
                                            Raillardella minima
                                            Raillardella muirii
                                            Raillardella nevadensis
                                            Raillardella pringlei
                                            Raillardella scabrida
                                            Raillardella scaposa
                                    Raillardia
                                            Raillardia argentea
                                    Raillardiopsis
                                            Raillardiopsis muirii
                                            Raillardiopsis scabrida
                                    Railliardia
                                            Railliardia arborea
                                            Railliardia ciliolata
                                              Railliardia ciliolata var. juniperoides
                                              Railliardia ciliolata var. leptocephala
                                              Railliardia ciliolata var. trinervia
                                            Railliardia demissifolia
                                              Railliardia demissifolia var. dolichophylla
                                            Railliardia herbstobatae
                                            Railliardia hillebrandii
                                            Railliardia kohalae
                                            Railliardia latifolia
                                              Railliardia latifolia var. helleri
                                            Railliardia linearis
                                              Railliardia linearis var. opposita
                                            Railliardia lonchophylla
                                              Railliardia lonchophylla var. stipitata
                                            Railliardia menziesii
                                              Railliardia menziesii var. angustifolia
                                            Railliardia molokaiensis
                                              Railliardia molokaiensis var. oppositifolia
                                              Railliardia molokaiensis var. stipitata
                                            Railliardia montana
                                              Railliardia montana var. longifolia
                                              Railliardia montana var. robustior
                                            Railliardia platyphylla
                                              Railliardia platyphylla var. leptophylla
                                              Railliardia platyphylla var. trillioidea
                                            Railliardia reticulata
                                            Railliardia rockii
                                            Railliardia scabra
                                              Railliardia scabra var. leiophylla
                                              Railliardia scabra var. munroi
                                            Railliardia sherffiana
                                              Railliardia sherffiana var. paucinervia
                                            Railliardia struthioloides
                                            Railliardia ternifolia
                                            Railliardia thyrsiflora
                                              Railliardia thyrsiflora var. cernua
                                            Railliardia waianapanapaenis
                                            Railliardia x dolosa
                                            Railliardia x vafra
                                    Railliautia
                                            Railliautia x fallax
                                            Railliautia x fucosa
                                    Rainiera
                                            Rainiera stricta
                                    Ratibida
                                            Ratibida columnifera
                                                   [Lepachys columnaris]
                                                   [Lepachys columnifera]
                                                   [Ratibida columnaris var. pulcherrima]
                                                   [Ratibida columnaris]
                                                   [Rudbeckia columnaris]
                                                   [Rudbeckia columnifera]
                                            Ratibida latipalearis
                                            Ratibida mexicana
                                            Ratibida peduncularis
                                              Ratibida peduncularis var. peduncularis
                                              Ratibida peduncularis var. picta
                                            Ratibida picta
                                            Ratibida pinnata
                                                   [Lepachys pinnata]
                                                   [Rudbeckia pinnata]
                                            Ratibida pulcherrima
                                            Ratibida tagetes
                                                   [Rudbeckia globosa]
                                                   [Rudbeckia tagetes]
                                              Ratibida tagetes var. cinerea
                                    Raulinoreitzia
                                    Rayjacksonia
                                            Rayjacksonia annua
                                                   [Haplopappus annuus]
                                                   [Haplopappus phyllocephalus ssp. annuus]
                                                   [Haplopappus phyllocephalus var. annuus]
                                                   [Machaeranthera annua]
                                                   [Machaeranthera phyllocephala var. annua]
                                                   [Sideranthus annuus]
                                            Rayjacksonia aurea
                                                   [Machaeranthera aurea]
                                            Rayjacksonia phyllocephala
                                                   [Machaeranthera phyllocephala var. megacephala]
                                                   [Machaeranthera phyllocephala]
                                    Reichardia
                                            Reichardia picroides
                                            Reichardia tingitana
                                    Remya
                                            Remya kauaiensis
                                              Remya kauaiensis var. magnifica
                                              Remya kauaiensis var. magnifolia
                                            Remya mauiensis
                                            Remya montgomeryi
                                    Rensonia
                                            Rensonia salvadorica
                                    Rhagadiolus
                                            Rhagadiolus edulis
                                            Rhagadiolus hedypnois
                                            Rhagadiolus stellatus
                                    Rhaponticum
                                            Rhaponticum pusillum
                                    Rhodanthe
                                            Rhodanthe chlorocephala
                                              Rhodanthe chlorocephala ssp. rosea
                                    Rhynchospermum
                                    Rhysolepis
                                            Rhysolepis morelensis
                                    Ridan
                                            Ridan paniculata
                                    Riddellia
                                    Riencourtia
                                    Rigiopappus
                                            Rigiopappus leptocladus
                                    Robinsonia
                                            Robinsonia haldaniana
                                    Roellia
                                            Roellia roellii
                                            Roellia simplex
                                    Rojasianthe
                                    Rolandra
                                            Rolandra fruticosa
                                    Roldana
                                            Roldana barba-johannis
                                            Roldana gentryi
                                            Roldana hartwegii
                                                   [Roldana carlomasonii]
                                                   [Senecio carlomasonii]
                                                   [Senecio hartwegii]
                                                   [Senecio seemanii]
                                            Roldana heracleifolia
                                            Roldana jurgensenii
                                            Roldana lineolata
                                            Roldana petasitis
                                            Roldana platanifolia
                                            Roldana sessilifolia
                                            Roldana suffulta
                                            Roldana tepopana
                                    Rudbeckia
                                            Rudbeckia acuminata
                                            Rudbeckia alismifolia
                                            Rudbeckia alpicola
                                            Rudbeckia amplectens
                                            Rudbeckia amplexicaulis
                                                   [Dracopis amplexicaulis]
                                            Rudbeckia auriculata
                                            Rudbeckia beadlei
                                            Rudbeckia brittonii
                                            Rudbeckia californica
                                              Rudbeckia californica var. glauca
                                              Rudbeckia californica var. intermedia
                                            Rudbeckia chapmanii
                                            Rudbeckia deamii
                                            Rudbeckia divergens
                                            Rudbeckia floridana
                                              Rudbeckia floridana var. angustifolia
                                            Rudbeckia foliosa
                                            Rudbeckia fulgida
                                              Rudbeckia fulgida var. auriculata
                                              Rudbeckia fulgida var. deamii
                                              Rudbeckia fulgida var. fulgida
                                              Rudbeckia fulgida var. missouriensis
                                              Rudbeckia fulgida var. palustris
                                              Rudbeckia fulgida var. spathulata
                                              Rudbeckia fulgida var. speciosa
                                                     [Rudbeckia gloriosa]
                                                     [Rudbeckia speciosa var. sullivantii]
                                                     [Rudbeckia speciosa]
                                                     [Rudbeckia sullivantii]
                                              Rudbeckia fulgida var. sullivantii
                                              Rudbeckia fulgida var. umbrosa
                                            Rudbeckia glabra
                                            Rudbeckia glaucescens
                                            Rudbeckia graminifolia
                                            Rudbeckia grandiflora
                                              Rudbeckia grandiflora var. alismaefolia
                                              Rudbeckia grandiflora var. alismifolia
                                              Rudbeckia grandiflora var. grandiflora
                                            Rudbeckia heliopsidis
                                            Rudbeckia heterophylla
                                            Rudbeckia hirta
                                              Rudbeckia hirta var. angustifolia
                                              Rudbeckia hirta var. brittonii
                                              Rudbeckia hirta var. floridana
                                              Rudbeckia hirta var. hirta
                                              Rudbeckia hirta var. monticola
                                              Rudbeckia hirta var. pulcherrima
                                                     [Rudbeckia bicolor]
                                                     [Rudbeckia hirta var. corymbifera]
                                                     [Rudbeckia hirta var. lanceolata]
                                                     [Rudbeckia hirta var. sericea]
                                                     [Rudbeckia hirta var. serotina]
                                                     [Rudbeckia longipes]
                                                     [Rudbeckia sericea]
                                                     [Rudbeckia serotina var. corymbifera]
                                                     [Rudbeckia serotina var. lanceolata]
                                                     [Rudbeckia serotina var. sericea]
                                                     [Rudbeckia serotina]
                                            Rudbeckia klamathensis
                                            Rudbeckia laciniata
                                              Rudbeckia laciniata var. ampla
                                                     [Rudbeckia ampla]
                                                     [Rudbeckia laciniata ssp. ampla]
                                              Rudbeckia laciniata var. bipinnata
                                              Rudbeckia laciniata var. digitata
                                              Rudbeckia laciniata var. heterophylla
                                              Rudbeckia laciniata var. humilis
                                              Rudbeckia laciniata var. laciniata
                                                     [Rudbeckia laciniata var. hortensis]
                                            Rudbeckia maxima
                                            Rudbeckia missouriensis
                                            Rudbeckia mohrii
                                            Rudbeckia mollis
                                            Rudbeckia montana
                                            Rudbeckia monticola
                                            Rudbeckia nitida
                                              Rudbeckia nitida var. texana
                                            Rudbeckia occidentalis
                                                   [Rudbeckia occidentalis var. occidentalis]
                                              Rudbeckia occidentalis var. alpicola
                                              Rudbeckia occidentalis var. montana
                                            Rudbeckia palustris
                                            Rudbeckia pinnatiloba
                                            Rudbeckia rupestris
                                            Rudbeckia scabrifolia
                                            Rudbeckia spathulata
                                            Rudbeckia subtomentosa
                                            Rudbeckia tenax
                                            Rudbeckia texana
                                            Rudbeckia triloba
                                              Rudbeckia triloba var. beadlei
                                              Rudbeckia triloba var. pinnatiloba
                                              Rudbeckia triloba var. rupestris
                                              Rudbeckia triloba var. triloba
                                            Rudbeckia truncata
                                            Rudbeckia umbrosa
                                    Rugelia
                                            Rugelia nudicaulis
                                    Rumfordia
                                            Rumfordia exauriculata
                                            Rumfordia floribunda
                                              Rumfordia floribunda var. jaliscensis
                                    Rydbergia
                                    Sabazia
                                            Sabazia anomala
                                            Sabazia durangensis
                                            Sabazia glabra
                                            Sabazia humilis
                                            Sabazia liebmannii
                                            Sabazia microspermoides
                                            Sabazia multiradiata
                                            Sabazia palmeri
                                    Sachsia
                                            Sachsia bahamensis
                                            Sachsia polycephala
                                    Salmea
                                            Salmea palmeri
                                            Salmea scandens
                                    Santolina
                                            Santolina chamaecyparissus
                                            Santolina neapolitana
                                            Santolina rosmarinifolia
                                            Santolina virens
                                    Sanvitalia
                                            Sanvitalia aberti
                                            Sanvitalia abertii
                                            Sanvitalia fruticosa
                                            Sanvitalia ocymoides
                                                   [Calyptocarpus blepharolepis]
                                            Sanvitalia procumbens
                                                   [Sanvitalia angustifolia]
                                            Sanvitalia tenuis
                                    Sartwellia
                                            Sartwellia flaveriae
                                                   [Sartwellia puberula]
                                            Sartwellia gypsophila
                                            Sartwellia mexicana
                                    Saussurea
                                            Saussurea albescens
                                            Saussurea alpina
                                            Saussurea amara
                                              Saussurea amara var. glomerata
                                            Saussurea americana
                                            Saussurea angustifolia
                                              Saussurea angustifolia ssp. yukonensis
                                              Saussurea angustifolia var. angustifolia
                                              Saussurea angustifolia var. viscida
                                              Saussurea angustifolia var. yukonensis
                                            Saussurea arenaria
                                            Saussurea densa
                                            Saussurea glomerata
                                            Saussurea leontodontoides
                                            Saussurea nuda
                                              Saussurea nuda ssp. densa
                                              Saussurea nuda var. densa
                                            Saussurea stella
                                            Saussurea superba
                                            Saussurea tilesii
                                            Saussurea triangulata
                                            Saussurea viscida
                                              Saussurea viscida var. yukonensis
                                            Saussurea weberi
                                            Saussurea x tschuktschorum
                                    Scabrethia
                                            Scabrethia scabra
                                                   [Wyethia scabra]
                                              Scabrethia scabra ssp. attenuata
                                                     [Wyethia scabra var. attenuata]
                                              Scabrethia scabra ssp. canescens
                                                     [Wyethia scabra var. canescens]
                                              Scabrethia scabra ssp. scabra
                                                     [Wyethia scabra var. scabra]
                                    Scalesia
                                    Schaetzellia
                                    Schistocarpha
                                            Schistocarpha eupatorioides
                                            Schistocarpha liebmannii
                                            Schistocarpha longiligula
                                            Schistocarpha platyphylla
                                    Schizoptera
                                      Schizoptera (Lophopleurum)
                                    Schizotrichia
                                    Schkuhria
                                            Schkuhria anthemoidea
                                              Schkuhria anthemoidea var. anthemoidea
                                              Schkuhria anthemoidea var. wrightii
                                            Schkuhria multiflora
                                                   [Bahia neomexicana]
                                                   [Schkuhria multiflora var. multiflora]
                                            Schkuhria pinnata
                                                   [Schkuhria wislizeni var. frustrata]
                                                   [Schkuhria wislizeni var. wrightii]
                                                   [Schkuhria wislizeni]
                                              Schkuhria pinnata var. guatemalensis
                                              Schkuhria pinnata var. pinnata
                                              Schkuhria pinnata var. virgata
                                              Schkuhria pinnata var. wislizeni
                                            Schkuhria pringlei
                                            Schkuhria schkuhrioides
                                            Schkuhria wislizenii
                                            Schkuhria wrightii
                                    Sciadocephala
                                    Sclerocarpus
                                            Sclerocarpus africanus
                                            Sclerocarpus divaricatus
                                            Sclerocarpus major
                                            Sclerocarpus schiedeanus
                                            Sclerocarpus spathulatus
                                            Sclerocarpus spatulatus
                                            Sclerocarpus uniserialis
                                              Sclerocarpus uniserialis var. austrotexanus
                                              Sclerocarpus uniserialis var. frutescens
                                              Sclerocarpus uniserialis var. uniserialis
                                    Sclerolepis
                                            Sclerolepis uniflora
                                    Scolymus
                                            Scolymus grandiflorus
                                            Scolymus hispanicus
                                            Scolymus maculatus
                                    Scorzonella
                                            Scorzonella arguta
                                            Scorzonella laciniata
                                              Scorzonella laciniata var. bolanderi
                                              Scorzonella laciniata var. pratensis
                                            Scorzonella leachiana
                                            Scorzonella lepidota
                                            Scorzonella leptosepala
                                            Scorzonella montana
                                            Scorzonella paludosa
                                              Scorzonella paludosa var. integrifolia
                                            Scorzonella pratensis
                                            Scorzonella procera
                                            Scorzonella sylvatica
                                    Scorzonera
                                            Scorzonera hispanica
                                            Scorzonera laciniata
                                                   [Podospermum laciniatum]
                                            Scorzonera seidlitzii
                                    Selloa
                                    Senecio
                                            Senecio actinella
                                                   [Packera actinella]
                                                   [Senecio actinella var. mogollonicus]
                                            Senecio alaskanus
                                            Senecio albonervius
                                            Senecio ammophilus
                                            Senecio amplectens
                                              Senecio amplectens var. amplectens
                                              Senecio amplectens var. holmii
                                                     [Ligularia amplectens var. holmii]
                                                     [Ligularia holmii]
                                                     [Senecio holmii]
                                            Senecio ampullaceus
                                            Senecio andersonii
                                            Senecio andrieuxii
                                            Senecio angulatus
                                            Senecio angulifolius
                                            Senecio angustissimus
                                            Senecio anonymus
                                            Senecio antennariifolius
                                            Senecio anteuphorbium
                                            Senecio aphanactis
                                            Senecio aquaticus
                                              Senecio aquaticus ssp. barbareifolius
                                            Senecio argutus
                                            Senecio arizonicus
                                            Senecio aronicoides
                                            Senecio aschenbornianus
                                            Senecio astephanus
                                            Senecio atratus
                                            Senecio atropurpureus
                                              Senecio atropurpureus ssp. frigidus
                                              Senecio atropurpureus ssp. tomentosus
                                              Senecio atropurpureus var. dentatus
                                              Senecio atropurpureus var. ulmeri
                                            Senecio aurellus
                                            Senecio aureus
                                              Senecio aureus var. aquilonius
                                              Senecio aureus var. gracilis
                                              Senecio aureus var. intercursus
                                              Senecio aureus var. semicordatus
                                            Senecio bairdii
                                            Senecio barba-johannis
                                            Senecio bellidifolius
                                            Senecio bernardinus
                                              Senecio bernardinus var. sparsilobatus
                                            Senecio bicolor
                                              Senecio bicolor ssp. cineraria
                                                     [Senecio cineraria]
                                            Senecio bigelovii
                                              Senecio bigelovii var. bigelovii
                                                     [Ligularia bigelovii]
                                              Senecio bigelovii var. hallii
                                                     [Ligularia bigelovii var. hallii]
                                            Senecio bivestitus
                                            Senecio blochmanae
                                            Senecio blochmaniae
                                            Senecio blumeri
                                            Senecio bolanderi
                                              Senecio bolanderi var. harfordii
                                            Senecio bombycopholis
                                            Senecio bracteolatus
                                            Senecio breweri
                                            Senecio bridgesii
                                            Senecio cacalioides
                                            Senecio californicus
                                              Senecio californicus var. ammophilus
                                            Senecio callosus
                                            Senecio candidissimus
                                            Senecio cannabifolius
                                            Senecio cannabinifolius
                                            Senecio canovirens
                                            Senecio capillaris
                                            Senecio caulanthifolius
                                            Senecio cedrosensis
                                            Senecio chapalensis
                                            Senecio chihuahuensis
                                            Senecio chloranthus
                                            Senecio chrysanthemoides
                                            Senecio cinerarioides
                                            Senecio clarkianus
                                            Senecio clevelandii
                                              Senecio clevelandii var. heterophyllus
                                            Senecio cliffordii
                                            Senecio clivorum
                                            Senecio cognatus
                                            Senecio confusus
                                            Senecio congestus
                                                   [Cineraria congesta]
                                                   [Senecio congestus ssp. tonsus]
                                                   [Senecio congestus var. palustris]
                                                   [Senecio congestus var. tonsus]
                                                   [Senecio palustris]
                                            Senecio conterminus
                                            Senecio contristatus
                                            Senecio conzattii
                                            Senecio covasii
                                            Senecio covillei
                                              Senecio covillei var. scorzonella
                                            Senecio coxi
                                            Senecio crassulus
                                                   [Senecio crassulus var. cusickii]
                                            Senecio cremeiflorus
                                            Senecio crepidineus
                                            Senecio cruentus
                                            Senecio cyclophyllus
                                            Senecio cymbalaria
                                            Senecio darwinii
                                            Senecio debilis
                                            Senecio deflersii
                                            Senecio deformis
                                            Senecio deppeanus
                                            Senecio dimorphophyllus
                                              Senecio dimorphophyllus var. intermedius
                                              Senecio dimorphophyllus var. paysonii
                                            Senecio discoideus
                                            Senecio doratophyllus
                                            Senecio ehrenbergianus
                                            Senecio elegans
                                            Senecio elmeri
                                            Senecio eremophilus
                                              Senecio eremophilus var. eremophilus
                                              Senecio eremophilus var. kingii
                                                     [Senecio ambrosioides]
                                                     [Senecio eremophilus ssp. kingii]
                                                     [Senecio kingii]
                                              Senecio eremophilus var. macdougalii
                                                     [Senecio eremophilus ssp. macdougalii]
                                                     [Senecio macdougalii]
                                            Senecio erraticus
                                            Senecio ertterae
                                            Senecio erucifolius
                                            Senecio eurycephalus
                                              Senecio eurycephalus var. lewisrosei
                                              Senecio eurycephalus var. major
                                            Senecio fedifolius
                                            Senecio filaginoides
                                            Senecio filaris
                                            Senecio flaccidus
                                                   [Senecio douglasii var. douglasii]
                                              Senecio flaccidus var. douglasii
                                                     [Senecio douglasii var. tularensis]
                                              Senecio flaccidus var. flaccidus
                                                     [Senecio douglasii ssp. longilobus]
                                                     [Senecio douglasii var. jamesii]
                                                     [Senecio douglasii var. longilobus]
                                                     [Senecio filifolius]
                                                     [Senecio longilobus]
                                              Senecio flaccidus var. monoensis
                                                     [Senecio douglasii var. monoensis]
                                                     [Senecio douglasii]
                                                     [Senecio monoensis]
                                            Senecio flettii
                                            Senecio flintii
                                            Senecio flocciferus
                                            Senecio foetidus
                                              Senecio foetidus var. hydrophiloides
                                            Senecio fremontii
                                              Senecio fremontii ssp. occidentalis
                                              Senecio fremontii var. blitoides
                                                     [Senecio blitoides]
                                                     [Senecio carthamoides]
                                                     [Senecio fremontii ssp. blitoides]
                                              Senecio fremontii var. fremontii
                                              Senecio fremontii var. inexpectans
                                              Senecio fremontii var. inexpectatus
                                              Senecio fremontii var. occidentalis
                                            Senecio frigidus
                                            Senecio glaucifolius
                                            Senecio glaucus
                                            Senecio glomeratus
                                            Senecio gnidioides
                                            Senecio gracilis
                                            Senecio grandifolius
                                            Senecio greenei
                                            Senecio grisebachii
                                            Senecio guadalajarensis
                                            Senecio haenkei
                                            Senecio harfordii
                                            Senecio hederoides
                                            Senecio helodes
                                            Senecio heracleifolius
                                            Senecio hesperius
                                            Senecio heterodoxus
                                            Senecio heterotrichius
                                            Senecio hieraciifolius
                                            Senecio hirsuticaulis
                                            Senecio hoffmannii
                                            Senecio hybridus
                                            Senecio hydrophiloides
                                            Senecio hydrophilus
                                                   [Senecio sandvicensis]
                                              Senecio hydrophilus var. pacificus
                                            Senecio indecorus
                                            Senecio integerrimus
                                              Senecio integerrimus var. exaltatus
                                                     [Senecio columbianus]
                                                     [Senecio exaltatus]
                                                     [Senecio hookeri]
                                                     [Senecio integerrimus var. vaseyi]
                                                     [Senecio lugens var. exaltatus]
                                                     [Senecio vaseyi]
                                              Senecio integerrimus var. integerrimus
                                              Senecio integerrimus var. lugens
                                              Senecio integerrimus var. major
                                              Senecio integerrimus var. ochroleucus
                                              Senecio integerrimus var. scribneri
                                            Senecio integrifolius
                                            Senecio invenustus
                                            Senecio ionophyllus
                                              Senecio ionophyllus var. sparsilobatus
                                            Senecio jacobaea
                                            Senecio joppensis
                                            Senecio kjellmanii
                                            Senecio kuntzei
                                            Senecio lactucinus
                                            Senecio lanatifolius
                                            Senecio lapathifolius
                                            Senecio lapidum
                                            Senecio lathyroides
                                            Senecio layneae
                                            Senecio lemmonii
                                            Senecio leucoreus
                                            Senecio lewisrosei
                                            Senecio ligulifolius
                                            Senecio lindstroemii
                                            Senecio linearifolius
                                            Senecio lugens
                                              Senecio lugens var. hookeri
                                              Senecio lugens var. ochroleucus
                                              Senecio lugens var. parryi
                                            Senecio lyoni
                                            Senecio lyonii
                                            Senecio macounii
                                            Senecio madagascariensis
                                            Senecio madrensis
                                            Senecio magellanicus
                                            Senecio magnificus
                                            Senecio mairetianus
                                            Senecio malmstenii
                                            Senecio mandraliscae
                                            Senecio martirensis
                                            Senecio megacephalus
                                            Senecio melanopotamicus
                                            Senecio memmingeri
                                            Senecio mendocinensis
                                            Senecio mexicanus
                                            Senecio mikanioides
                                            Senecio milleflorus
                                            Senecio millefolium
                                            Senecio minimus
                                            Senecio mogollonicus
                                            Senecio mohavensis
                                            Senecio moranii
                                            Senecio moresbiensis
                                                   [Senecio cymbalarioides ssp. moresbiensis]
                                                   [Senecio streptanthifolius var. moresbiensis]
                                            Senecio muehlenbergii
                                            Senecio mulgediifolius
                                            Senecio multidentatus
                                              Senecio multidentatus var. huachucanus
                                                     [Senecio huachucanus]
                                            Senecio murorum
                                            Senecio murrayi
                                            Senecio musiniensis
                                            Senecio neowebsteri
                                            Senecio newcombei
                                            Senecio oblanceolatus
                                            Senecio ogotorukensis
                                            Senecio orizabensis
                                            Senecio otites
                                            Senecio palmensis
                                            Senecio papagonius
                                            Senecio parasiticus
                                            Senecio parryi
                                            Senecio pattersonensis
                                            Senecio pauciflorus
                                              Senecio pauciflorus var. fallax
                                              Senecio pauciflorus var. jucundulus
                                            Senecio pectinatus
                                            Senecio pentodontus
                                            Senecio pereziifolius
                                            Senecio petasitis
                                            Senecio petraeus
                                            Senecio phaeanthus
                                            Senecio phorodendroides
                                            Senecio picridis
                                            Senecio pinacatensis
                                            Senecio pinetorum
                                            Senecio platypus
                                            Senecio praecox
                                            Senecio prenanthoides
                                            Senecio pringlei
                                            Senecio prionophyllus
                                            Senecio prionopterus
                                            Senecio pseudaureus
                                              Senecio pseudaureus ssp. semicordatus
                                              Senecio pseudaureus var. semicordatus
                                            Senecio pseudoarnica
                                            Senecio pudicus
                                                   [Ligularia pudica]
                                                   [Senecio cernuus]
                                            Senecio pyrrhochrous
                                            Senecio quadridentatus
                                            Senecio quaylei
                                            Senecio quebradensis
                                            Senecio quenselii
                                            Senecio radicans
                                            Senecio rapifolius
                                            Senecio rawsonianus
                                            Senecio reglensis
                                            Senecio remifolius
                                            Senecio reniformis
                                            Senecio resedifolius
                                            Senecio richardsonii
                                            Senecio riddellii
                                                   [Senecio spartioides var. fremontii]
                                                   [Senecio spartioides var. parksii]
                                            Senecio riomayensis
                                            Senecio robbinsii
                                            Senecio roldana
                                            Senecio rosei
                                            Senecio roseus
                                            Senecio rosulatus
                                            Senecio rugelia
                                            Senecio rupestris
                                            Senecio rusbyi
                                            Senecio rzedowskii
                                            Senecio sacramentanus
                                            Senecio salicinus
                                            Senecio sandersiana
                                            Senecio sandersii
                                            Senecio sanguisorbae
                                            Senecio scalaris
                                              Senecio scalaris var. carmenensis
                                            Senecio scaposus
                                            Senecio schweinitzianus
                                            Senecio scorzonella
                                            Senecio scribneri
                                            Senecio seemannii
                                            Senecio semicordatus
                                            Senecio seridophyllus
                                            Senecio serra
                                              Senecio serra var. admirabilis
                                                     [Senecio admirabilis]
                                              Senecio serra var. altior
                                              Senecio serra var. integriusculus
                                              Senecio serra var. serra
                                              Senecio serra var. sanctus
                                            Senecio sessilifolius
                                            Senecio sheldonensis
                                            Senecio sinuatus
                                            Senecio smallii
                                            Senecio smithii
                                            Senecio soldanella
                                                   [Ligularia soldanella]
                                            Senecio spartioides
                                              Senecio spartioides var. multicapitatus
                                                     [Senecio multicapitatus]
                                              Senecio spartioides var. spartioides
                                                     [Senecio spartioides var. granularis]
                                                     [Senecio toiyabensis]
                                            Senecio sphaerocephalus
                                            Senecio spribillei
                                            Senecio squalidus
                                            Senecio standleyi
                                            Senecio stapeliiformis
                                            Senecio stoechadiformis
                                            Senecio subnudus
                                            Senecio subulatus
                                            Senecio sylvaticus
                                            Senecio taraxacoides
                                                   [Ligularia taraxacoides]
                                                   [Senecio amplectens var. taraxacoides]
                                              Senecio taraxacoides var. nudatus
                                            Senecio tepopanus
                                            Senecio thomasii
                                            Senecio toluccanus
                                              Senecio toluccanus var. microdontus
                                            Senecio townsendii
                                            Senecio tracyi
                                            Senecio triangularis
                                                   [Senecio gibbsonsii]
                                                   [Senecio triangularis var. angustifolius]
                                              Senecio triangularis var. hanseni
                                            Senecio trigonophyllus
                                            Senecio turbinatus
                                            Senecio umbraculifera
                                            Senecio valerianifolius
                                            Senecio velatus
                                            Senecio viejoanus
                                            Senecio viscosus
                                            Senecio vulgaris
                                            Senecio warnockii
                                            Senecio webbii
                                            Senecio wootonii
                                            Senecio yegua
                                            Senecio yukonensis
                                    Senecioides
                                            Senecioides cinerea
                                    Sericocarpus
                                            Sericocarpus asteroides
                                                   [Aster asteroides]
                                                   [Aster paternus]
                                                   [Conyza asteroides]
                                            Sericocarpus californicus
                                            Sericocarpus linifolius
                                            Sericocarpus oregonensis
                                              Sericocarpus oregonensis ssp. californicus
                                              Sericocarpus oregonensis ssp. oregonensis
                                              Sericocarpus oregonensis var. californicus
                                              Sericocarpus oregonensis var. oregonensis
                                            Sericocarpus rigidus
                                            Sericocarpus tomentellus
                                            Sericocarpus tortifolius
                                                   [Aster bifoliatus]
                                                   [Conyza bifoliata]
                                                   [Sericocarpus acutisquamosus]
                                                   [Sericocarpus bifoliatus]
                                    Serinia
                                    Seriphidium
                                            Seriphidium arbusculum
                                              Seriphidium arbusculum ssp. longilobum
                                            Seriphidium canum
                                            Seriphidium rigidum
                                            Seriphidium rothrockii
                                            Seriphidium tripartitum
                                    Serratula
                                            Serratula alpina
                                            Serratula cerinthefolia
                                            Serratula cerinthifolia
                                            Serratula tinctoria
                                    Shinnersia
                                            Shinnersia rivularis
                                    Shinnersoseris
                                            Shinnersoseris rostrata
                                    Sideranthus
                                            Sideranthus aureus
                                            Sideranthus megacephalus
                                            Sideranthus serratus
                                            Sideranthus viscidus
                                    Siegesbeckia
                                    Sigesbeckia
                                            Sigesbeckia jorullensis
                                            Sigesbeckia laciniata
                                            Sigesbeckia orientalis
                                    Silphium
                                            Silphium albiflorum
                                            Silphium angustum
                                            Silphium asteriscus
                                              Silphium asteriscus var. angustatum
                                              Silphium asteriscus var. asteriscus
                                              Silphium asteriscus var. dentatum
                                              Silphium asteriscus var. laevicaule
                                              Silphium asteriscus var. latifolium
                                              Silphium asteriscus var. scabrum
                                              Silphium asteriscus var. simpsonii
                                              Silphium asteriscus var. trifoliatum
                                            Silphium atropurpureum
                                            Silphium brachiatum
                                            Silphium chickamaugense
                                            Silphium compositum
                                              Silphium compositum ssp. ovatifolium
                                              Silphium compositum ssp. reniforme
                                              Silphium compositum ssp. venosum
                                              Silphium compositum var. compositum
                                              Silphium compositum var. ovatifolium
                                              Silphium compositum var. reniforme
                                              Silphium compositum var. venosum
                                            Silphium confertifolium
                                            Silphium connatum
                                            Silphium dentatum
                                              Silphium dentatum var. angustatum
                                            Silphium elliottii
                                            Silphium glabrum
                                            Silphium glutinosum
                                            Silphium gracile
                                            Silphium incisum
                                            Silphium integrifolium
                                              Silphium integrifolium var. asperrimum
                                              Silphium integrifolium var. deamii
                                              Silphium integrifolium var. gattingeri
                                              Silphium integrifolium var. integrifolium
                                              Silphium integrifolium var. laeve
                                              Silphium integrifolium var. neglectum
                                            Silphium laciniatum
                                              Silphium laciniatum var. laciniatum
                                              Silphium laciniatum var. robinsonii
                                            Silphium lapsuum
                                            Silphium mohrii
                                            Silphium nodum
                                            Silphium orae
                                            Silphium ovatifolium
                                            Silphium perfoliatum
                                              Silphium perfoliatum ssp. connatum
                                              Silphium perfoliatum var. connatum
                                              Silphium perfoliatum var. perfoliatum
                                            Silphium perplexum
                                            Silphium pinnatifidum
                                            Silphium radula
                                                   [Silphium asperrimum]
                                                   [Silphium dentatum var. gatesii]
                                                   [Silphium gatesii]
                                              Silphium radula var. gracile
                                              Silphium radula var. radula
                                            Silphium reniforme
                                            Silphium reverchonii
                                            Silphium rumicifolium
                                            Silphium scaberrimum
                                            Silphium simpsonii
                                              Silphium simpsonii var. wrightii
                                            Silphium speciosum
                                            Silphium terebinthinaceum
                                              Silphium terebinthinaceum var. luciae-brauniae
                                              Silphium terebinthinaceum var. pinnatifidum
                                              Silphium terebinthinaceum var. terebinthinaceum
                                            Silphium trifoliatum
                                              Silphium trifoliatum var. latifolium
                                              Silphium trifoliatum var. trifoliatum
                                            Silphium venosum
                                            Silphium wasiotense
                                    Silybum
                                            Silybum eburneum
                                            Silybum marianum
                                                   [Carduus marianus]
                                                   [Mariana mariana]
                                    Simsia
                                            Simsia amplexicaulis
                                            Simsia calva
                                            Simsia chaseae
                                            Simsia foetida
                                              Simsia foetida var. decipiens
                                            Simsia lagasceiformis
                                                   [Simsia exaristata var. perplexa]
                                                   [Simsia exaristata]
                                                   [Simsia lagascaeformis]
                                            Simsia sanguinea
                                            Simsia setosa
                                            Simsia sylvicola
                                    Sinclairia
                                            Sinclairia palmeri
                                    Sinosenecio
                                            Sinosenecio newcombei
                                    Sitilias
                                    Smallanthus
                                            Smallanthus maculatus
                                            Smallanthus macvaughii
                                            Smallanthus oaxacanus
                                            Smallanthus uvedalia
                                            Smallanthus uvedalius
                                                   [Osteospermum uvedalia]
                                                   [Polymnia maculata]
                                                   [Polymnia uvedalia var. densipilis]
                                                   [Polymnia uvedalia var. floridana]
                                                   [Polymnia uvedalia]
                                    Sobreyra
                                    Solidago
                                            Solidago aestivalis
                                            Solidago albopilosa
                                            Solidago altiplanities
                                            Solidago altissima
                                              Solidago altissima ssp. altissima
                                              Solidago altissima ssp. gilvocanescens
                                              Solidago altissima var. pluricephala
                                              Solidago altissima var. procera
                                            Solidago angusta
                                            Solidago anticostensis
                                            Solidago arguta
                                              Solidago arguta ssp. arguta
                                              Solidago arguta ssp. boottii
                                              Solidago arguta ssp. caroliniana
                                              Solidago arguta ssp. pseudoyadkinensis
                                              Solidago arguta var. arguta
                                              Solidago arguta var. boottii
                                              Solidago arguta var. caroliniana
                                              Solidago arguta var. harrisii
                                              Solidago arguta var. neurolepis
                                              Solidago arguta var. strigosa
                                            Solidago aspera
                                            Solidago asteroides
                                            Solidago aureola
                                            Solidago auriculata
                                                   [Solidago amplexicaulis]
                                                   [Solidago notabilis]
                                            Solidago austrina
                                            Solidago axillaris
                                            Solidago bicolor
                                              Solidago bicolor var. concolor
                                              Solidago bicolor var. lanata
                                              Solidago bicolor var. ovalis
                                              Solidago bicolor var. tonsa
                                            Solidago boottii
                                              Solidago boottii var. brachyphylla
                                              Solidago boottii var. caroliniana
                                              Solidago boottii var. ludoviciana
                                            Solidago brachyphylla
                                            Solidago buckleyi
                                            Solidago caesia
                                              Solidago caesia var. axillaris
                                              Solidago caesia var. caesia
                                              Solidago caesia var. curtisii
                                              Solidago caesia var. hispida
                                              Solidago caesia var. paniculata
                                              Solidago caesia var. zedia
                                            Solidago calcicola
                                            Solidago californica
                                            Solidago camporum
                                            Solidago canadensis
                                              Solidago canadensis var. bartramiana
                                              Solidago canadensis var. canadensis
                                              Solidago canadensis var. gilvocanescens
                                                     [Solidago altissima var. gilvocanescens]
                                                     [Solidago gilvocanescens]
                                                     [Solidago pruinosa]
                                              Solidago canadensis var. hargeri
                                              Solidago canadensis var. lepida
                                                     [Solidago canadensis var. subserrata]
                                                     [Solidago lepida var. molina]
                                              Solidago canadensis var. rupestris
                                              Solidago canadensis var. scabra
                                                     [Solidago altissima var. altissima]
                                                     [Solidago hirsutissima]
                                                     [Solidago lunellii]
                                            Solidago canescens
                                            Solidago capulinensis
                                            Solidago caroliniana
                                            Solidago celtidifolia
                                            Solidago chapmanii
                                            Solidago chilensis
                                              Solidago chilensis var. megapotamica
                                            Solidago chrysolepis
                                            Solidago chrysothamnoides
                                            Solidago conferta
                                            Solidago confinis
                                            Solidago corymbosa
                                            Solidago curtisii
                                              Solidago curtisii var. curtisii
                                              Solidago curtisii var. flaccidifolia
                                              Solidago curtisii var. pubens
                                            Solidago cutleri
                                            Solidago deamii
                                            Solidago delicatula
                                            Solidago discoidea
                                            Solidago dispersa
                                            Solidago drummondii
                                            Solidago edisoniana
                                            Solidago elliottii
                                              Solidago elliottii var. ascendens
                                              Solidago elliottii var. edisoniana
                                              Solidago elliottii var. pedicellata
                                            Solidago elliptica
                                            Solidago elongata
                                            Solidago erecta
                                            Solidago ericamerioides
                                            Solidago farwellii
                                            Solidago faucibus
                                            Solidago fistulosa
                                            Solidago flaccidifolia
                                            Solidago flavovirens
                                            Solidago flexicaulis
                                                   [Solidago latifolia]
                                            Solidago galetorum
                                            Solidago garrettii
                                            Solidago gattingeri
                                            Solidago gigantea
                                                   [Aster latissimifolius var. serotinus]
                                                   [Solidago gigantea ssp. serotina]
                                                   [Solidago gigantea var. leiophylla]
                                                   [Solidago gigantea var. pitcheri]
                                                   [Solidago gigantea var. serotina]
                                                   [Solidago gigantea var. shinnersii]
                                                   [Solidago pitcheri]
                                                   [Solidago serotina var. gigantea]
                                                   [Solidago serotina]
                                                   [Solidago serotinoides]
                                                   [Solidago x leiophallax]
                                            Solidago gillmanii
                                                   [Solidago glutinosa var. gillmanii]
                                                   [Solidago spathulata var. gillmanii]
                                            Solidago glomerata
                                            Solidago gracilis
                                            Solidago gracillima
                                            Solidago graminifolia
                                              Solidago graminifolia var. galetorum
                                              Solidago graminifolia var. gymnospermoides
                                              Solidago graminifolia var. major
                                              Solidago graminifolia var. media
                                              Solidago graminifolia var. nuttallii
                                              Solidago graminifolia var. polycephala
                                            Solidago grandiflora
                                            Solidago guiradonis
                                            Solidago gymnospermoides
                                              Solidago gymnospermoides var. callosa
                                            Solidago gypsophila
                                            Solidago harperi
                                            Solidago harrisii
                                            Solidago helleri
                                            Solidago hintoniorum
                                            Solidago hirtella
                                            Solidago hispida
                                              Solidago hispida var. arnoglossa
                                              Solidago hispida var. hispida
                                              Solidago hispida var. lanata
                                              Solidago hispida var. tonsa
                                            Solidago houghtonii
                                            Solidago humilis
                                              Solidago humilis var. nana
                                            Solidago jacksonii
                                              Solidago jacksonii var. humilis
                                            Solidago jejunifolia
                                            Solidago juliae
                                                   [Solidago altissima var. canescens]
                                                   [Solidago canadensis var. canescens]
                                            Solidago juncea
                                                   [Solidago juncea var. neobohemica]
                                                   [Solidago juncea var. ramosa]
                                            Solidago kralii
                                            Solidago laevicaulis
                                            Solidago lancifolia
                                            Solidago lateriflora
                                            Solidago latissimifolia
                                            Solidago leavenworthii
                                            Solidago lepida
                                              Solidago lepida ssp. fallax
                                              Solidago lepida ssp. lepida
                                              Solidago lepida var. lepida
                                              Solidago lepida var. salebrosa
                                                     [Solidago canadensis ssp. elongata]
                                                     [Solidago canadensis ssp. salebrosa]
                                                     [Solidago canadensis var. elongata]
                                                     [Solidago canadensis var. salebrosa]
                                                     [Solidago dumetorum]
                                                     [Solidago lepida var. elongata]
                                                     [Solidago lepida var. fallax]
                                            Solidago lindheimeriana
                                            Solidago ludoviciana
                                            Solidago macrophylla
                                              Solidago macrophylla var. thyrsoidea
                                            Solidago maxonii
                                            Solidago media
                                            Solidago mensalis
                                            Solidago microcephala
                                            Solidago microglossa
                                            Solidago microphylla
                                            Solidago milleriana
                                            Solidago minor
                                            Solidago mirabilis
                                            Solidago missouriensis
                                              Solidago missouriensis var. fasciculata
                                                     [Solidago glaberrima var. moritura]
                                                     [Solidago glaberrima]
                                                     [Solidago missouriensis var. glaberrima]
                                              Solidago missouriensis var. missouriensis
                                                     [Solidago missouriensis var. extraria]
                                                     [Solidago missouriensis var. montana]
                                              Solidago missouriensis var. tenuissima
                                                     [Solidago tenuissima]
                                              Solidago missouriensis var. tolmieana
                                            Solidago mollis
                                              Solidago mollis var. angustata
                                              Solidago mollis var. mollis
                                            Solidago monticola
                                            Solidago moseleyi
                                            Solidago multiradiata
                                                   [Solidago dilatata]
                                              Solidago multiradiata var. arctica
                                              Solidago multiradiata var. multiradiata
                                              Solidago multiradiata var. scopulorum
                                                     [Solidago ciliosa]
                                                     [Solidago multiradiata ssp. scopulorum]
                                                     [Solidago scopulorum]
                                            Solidago nana
                                            Solidago neglecta
                                            Solidago nemoralis
                                              Solidago nemoralis ssp. decemflora
                                                     [Solidago decemflora]
                                                     [Solidago longipetiolata]
                                                     [Solidago nemoralis ssp. longipetiolata]
                                                     [Solidago nemoralis var. decemflora]
                                                     [Solidago nemoralis var. longipetiolata]
                                                     [Solidago pulcherrima]
                                              Solidago nemoralis ssp. haleana
                                              Solidago nemoralis ssp. nemoralis
                                              Solidago nemoralis var. haleana
                                              Solidago nemoralis var. nemoralis
                                            Solidago neurolepis
                                            Solidago nitida
                                            Solidago nuttallii
                                            Solidago odora
                                              Solidago odora ssp. chapmanii
                                              Solidago odora ssp. odora
                                              Solidago odora var. chapmanii
                                              Solidago odora var. odora
                                            Solidago ohioensis
                                            Solidago ouachitensis
                                            Solidago paniculata
                                            Solidago parvirigida
                                            Solidago patula
                                              Solidago patula ssp. patula
                                              Solidago patula ssp. strictula
                                              Solidago patula var. patula
                                              Solidago patula var. strictula
                                            Solidago pauciflosculosa
                                            Solidago pendula
                                            Solidago perglabra
                                            Solidago perlonga
                                            Solidago petiolaris
                                              Solidago petiolaris var. angusta
                                              Solidago petiolaris var. petiolaris
                                              Solidago petiolaris var. wardii
                                            Solidago pinetorum
                                            Solidago plumosa
                                            Solidago polycephala
                                            Solidago polyphylla
                                            Solidago porteri
                                            Solidago ptarmicoides
                                            Solidago pubens
                                            Solidago puberula
                                              Solidago puberula ssp. puberula
                                              Solidago puberula ssp. pulverulenta
                                              Solidago puberula var. puberula
                                              Solidago puberula var. pulverulenta
                                            Solidago pulchra
                                            Solidago pulverulenta
                                            Solidago pumila
                                            Solidago purshii
                                            Solidago racemosa
                                                   [Solidago glutinosa var. racemosa]
                                                   [Solidago spathulata var. racemosa]
                                              Solidago racemosa var. gillmanii
                                            Solidago radula
                                              Solidago radula var. laeta
                                              Solidago radula var. radula
                                              Solidago radula var. stenolepis
                                            Solidago radulina
                                            Solidago randii
                                                   [Solidago glutinosa ssp. randii]
                                                   [Solidago spathulata ssp. randii]
                                              Solidago randii var. monticola
                                            Solidago remota
                                            Solidago riddellii
                                            Solidago rigida
                                              Solidago rigida ssp. glabrata
                                              Solidago rigida ssp. humilis
                                              Solidago rigida ssp. rigida
                                              Solidago rigida var. glabrata
                                              Solidago rigida var. humilis
                                              Solidago rigida var. laevicaulis
                                            Solidago rigidiuscula
                                            Solidago roanensis
                                              Solidago roanensis var. monticola
                                            Solidago rotundifolia
                                            Solidago rugosa
                                              Solidago rugosa ssp. aspera
                                              Solidago rugosa ssp. rugosa
                                              Solidago rugosa var. aspera
                                              Solidago rugosa var. celtidifolia
                                              Solidago rugosa var. cronquistiana
                                              Solidago rugosa var. rugosa
                                              Solidago rugosa var. sphagnophila
                                            Solidago rupestris
                                            Solidago salicina
                                            Solidago scaberrima
                                            Solidago scabrida
                                            Solidago sciaphila
                                            Solidago sempervirens
                                              Solidago sempervirens ssp. mexicana
                                              Solidago sempervirens ssp. sempervirens
                                              Solidago sempervirens var. mexicana
                                                     [Solidago angustifolia]
                                                     [Solidago mexicana]
                                                     [Solidago petiolata]
                                              Solidago sempervirens var. sempervirens
                                            Solidago serra
                                            Solidago shortii
                                            Solidago simplex
                                              Solidago simplex ssp. randii
                                              Solidago simplex ssp. simplex
                                                     [Solidago bellidifolia]
                                                     [Solidago chlorolepis]
                                                     [Solidago decumbens var. chlorolepis]
                                                     [Solidago decumbens var. oreophila]
                                                     [Solidago decumbens]
                                                     [Solidago glutinosa var. chlorolepis]
                                                     [Solidago glutinosa var. nana]
                                                     [Solidago oreophila]
                                                     [Solidago spathulata ssp. spathulata]
                                                     [Solidago spathulata var. nana]
                                              Solidago simplex var. chlorolepis
                                              Solidago simplex var. gillmanii
                                              Solidago simplex var. monticola
                                              Solidago simplex var. nana
                                              Solidago simplex var. ontarioensis
                                              Solidago simplex var. racemosa
                                              Solidago simplex var. simplex
                                                     [Solidago glutinosa var. ontarioensis]
                                                     [Solidago glutinosa]
                                                     [Solidago neomexicana]
                                                     [Solidago spathulata ssp. glutinosa]
                                                     [Solidago spathulata var. neomexicana]
                                              Solidago simplex var. spathulata
                                            Solidago simulans
                                            Solidago spathulata
                                            Solidago speciosa
                                              Solidago speciosa ssp. pallida
                                              Solidago speciosa ssp. speciosa
                                              Solidago speciosa var. angustata
                                              Solidago speciosa var. erecta
                                              Solidago speciosa var. jejunifolia
                                              Solidago speciosa var. pallida
                                                     [Solidago pallida]
                                              Solidago speciosa var. rigidiuscula
                                              Solidago speciosa var. speciosa
                                            Solidago spectabilis
                                              Solidago spectabilis var. confinis
                                              Solidago spectabilis var. spectabilis
                                            Solidago sphacelata
                                                   [Brachychaeta sphacelata]
                                            Solidago spithamaea
                                            Solidago squarrosa
                                            Solidago stricta
                                              Solidago stricta ssp. gracillima
                                              Solidago stricta ssp. stricta
                                            Solidago strigosa
                                            Solidago suaveolens
                                            Solidago tarda
                                            Solidago tenuifolia
                                              Solidago tenuifolia var. pycnocephala
                                            Solidago texensis
                                            Solidago tortifolia
                                            Solidago uliginosa
                                              Solidago uliginosa var. jejunifolia
                                              Solidago uliginosa var. levipes
                                              Solidago uliginosa var. linoides
                                              Solidago uliginosa var. neglecta
                                              Solidago uliginosa var. peracuta
                                              Solidago uliginosa var. terrae-novae
                                              Solidago uliginosa var. uliginosa
                                            Solidago ulmifolia
                                              Solidago ulmifolia var. microphylla
                                              Solidago ulmifolia var. palmeri
                                              Solidago ulmifolia var. ulmifolia
                                            Solidago uniligulata
                                              Solidago uniligulata var. levipes
                                            Solidago velutina
                                                   [Solidago arizonica]
                                                   [Solidago californica var. nevadensis]
                                                   [Solidago canadensis var. arizonica]
                                                   [Solidago howellii]
                                                   [Solidago sparsiflora]
                                                   [Solidago spathulata var. subcinerea]
                                                   [Solidago trinervata]
                                                   [Solidago velutina var. nevadensis]
                                              Solidago velutina ssp. sparsiflora
                                              Solidago velutina ssp. californica
                                            Solidago verna
                                            Solidago villosicarpa
                                            Solidago virgauera
                                              Solidago virgauera var. arctica
                                            Solidago virgaurea
                                            Solidago viscidula
                                            Solidago wardii
                                            Solidago wrightii
                                              Solidago wrightii var. adenophora
                                                     [Solidago bigelovii]
                                              Solidago wrightii var. guadalupensis
                                              Solidago wrightii var. wrightii
                                                     [Solidago bigelovii var. wrightii]
                                            Solidago x asperula
                                            Solidago x bartramiana
                                            Solidago x beaudryi
                                            Solidago x bernardii
                                            Solidago x erskinei
                                            Solidago x hirtipes
                                            Solidago x krotkovii
                                            Solidago x lutescens
                                            Solidago x ovata
                                            Solidago x ulmicaesia
                                            Solidago yadkinensis
                                    Solidaster
                                    Soliva
                                            Soliva anthemifolia
                                            Soliva mutisii
                                            Soliva sessilis
                                                   [Soliva daucifolia]
                                                   [Soliva pterosperma]
                                            Soliva stolonifera
                                    Sonchus
                                            Sonchus arvensis
                                              Sonchus arvensis ssp. arvensis
                                              Sonchus arvensis ssp. uliginosus
                                              Sonchus arvensis var. glabrescens
                                              Sonchus arvensis var. shumovichii
                                            Sonchus asper
                                                   [Sonchus asper ssp. asper]
                                                   [Sonchus asper ssp. glaucescens]
                                                   [Sonchus nymanii]
                                            Sonchus oleraceus
                                            Sonchus palmensis
                                            Sonchus palustris
                                            Sonchus tenerrimus
                                            Sonchus uliginosus
                                    Sphaeranthus
                                            Sphaeranthus suaveolens
                                    Sphaeromeria
                                            Sphaeromeria argentea
                                            Sphaeromeria cana
                                                   [Tanacetum canum]
                                            Sphaeromeria capitata
                                            Sphaeromeria compacta
                                            Sphaeromeria diversifolia
                                                   [Tanacetum diversifolium]
                                            Sphaeromeria martirensis
                                            Sphaeromeria potentilloides
                                              Sphaeromeria potentilloides var. nitrophila
                                              Sphaeromeria potentilloides var. potentilloides
                                            Sphaeromeria ruthiae
                                            Sphaeromeria simplex
                                    Sphagneticola
                                            Sphagneticola gracilis
                                            Sphagneticola trilobata
                                                   [Complaya trilobata]
                                                   [Silphium trilobatum]
                                                   [Thelechitonia trilobata]
                                    Spilanthes
                                            Spilanthes acmella
                                            Spilanthes alba
                                            Spilanthes americana
                                              Spilanthes americana var. repens
                                              Spilanthes americana var. stolonifera
                                            Spilanthes disciformis
                                              Spilanthes disciformis var. phaneractis
                                            Spilanthes iodiscaea
                                            Spilanthes oleracea
                                            Spilanthes pusilla
                                            Spilanthes stolonifera
                                            Spilanthes uliginosa
                                            Spilanthes urens
                                    Spiracantha
                                            Spiracantha cornifolia
                                    Squamopappus
                                    Stachycephalum
                                    Standleyanthus
                                    Starkea
                                    Stebbinsoseris
                                            Stebbinsoseris decipiens
                                            Stebbinsoseris heterocarpa
                                                   [Microseris heterocarpa]
                                    Steiractinia
                                    Stemmatella
                                    Stemmodontia
                                            Stemmodontia calycina
                                    Stenactis
                                            Stenactis strigosa
                                    Stenopadus
                                    Stenotopsis
                                    Stenotus
                                            Stenotus acaulis
                                                   [Haplopappus acaulis var. glabratus]
                                                   [Stenotus acaulis var. glabratus]
                                              Stenotus acaulis var. acaulis
                                                     [Haplopappus acaulis ssp. typicus]
                                                     [Haplopappus acaulis]
                                              Stenotus acaulis var. kennedyi
                                            Stenotus armerioides
                                              Stenotus armerioides var. armerioides
                                                     [Haplopappus armerioides]
                                              Stenotus armerioides var. gramineus
                                                     [Haplopappus armerioides var. gramineus]
                                            Stenotus caespitosus
                                            Stenotus falcatus
                                            Stenotus lanuginosus
                                                   [Haplopappus lanuginosus ssp. andersonii]
                                                   [Haplopappus lanuginosus ssp. typicus]
                                                   [Haplopappus lanuginosus var. andersonii]
                                                   [Haplopappus lanuginosus]
                                                   [Stenotus andersonii]
                                              Stenotus lanuginosus var. andersonii
                                              Stenotus lanuginosus var. lanuginosus
                                            Stenotus latifolius
                                            Stenotus linearifolius
                                            Stenotus macleanii
                                            Stenotus pulvinatus
                                            Stenotus pygmaeus
                                            Stenotus scaber
                                            Stenotus stenophyllus
                                    Stephananthus
                                    Stephanomeria
                                            Stephanomeria blairii
                                            Stephanomeria carotifera
                                            Stephanomeria cichoriacea
                                            Stephanomeria coronaria
                                            Stephanomeria diegensis
                                            Stephanomeria elata
                                            Stephanomeria exigua
                                              Stephanomeria exigua ssp. carotifera
                                              Stephanomeria exigua ssp. coronaria
                                              Stephanomeria exigua ssp. deanei
                                              Stephanomeria exigua ssp. exigua
                                                     [Lygodesmia bigelovii]
                                                     [Stephanomeria exigua ssp. pentachaeta]
                                                     [Stephanomeria exigua var. pentachaeta]
                                                     [Stephanomeria schottii]
                                              Stephanomeria exigua ssp. macrocarpa
                                              Stephanomeria exigua var. coronaria
                                              Stephanomeria exigua var. deanei
                                            Stephanomeria fluminea
                                            Stephanomeria guadalupensis
                                            Stephanomeria lactucina
                                            Stephanomeria malheurensis
                                            Stephanomeria minor
                                              Stephanomeria minor var. myrioclada
                                              Stephanomeria minor var. uintaensis
                                              Stephanomeria minor var. uintensis
                                            Stephanomeria monocephala
                                            Stephanomeria myrioclada
                                                   [Stephanomeria tenuifolia var. myrioclada]
                                            Stephanomeria paniculata
                                            Stephanomeria parryi
                                            Stephanomeria pauciflora
                                                   [Lygodesmia pauciflora]
                                                   [Ptiloria pauciflora]
                                                   [Stephanomeria cinerea]
                                                   [Stephanomeria lygodesmoides]
                                                   [Stephanomeria neomexicana]
                                                   [Stephanomeria pauciflora var. parishii]
                                                   [Stephanomeria pauciflora var. pauciflora]
                                            Stephanomeria pentachaeta
                                            Stephanomeria runcinata
                                              Stephanomeria runcinata var. parishii
                                            Stephanomeria tenuifolia
                                                   [Ptiloria tenuifolia]
                                                   [Stephanomeria minor var. minor]
                                            Stephanomeria thurberi
                                                   [Lygodesmia thurberi]
                                            Stephanomeria virgata
                                              Stephanomeria virgata ssp. pleurocarpa
                                              Stephanomeria virgata ssp. virgata
                                              Stephanomeria virgata var. tomentosa
                                            Stephanomeria wrightii
                                                   [Lygodesmia wrightii]
                                    Stevia
                                            Stevia alatipes
                                            Stevia amabilis
                                            Stevia amblyolepis
                                              Stevia amblyolepis var. umbratilis
                                            Stevia anadenotricha
                                            Stevia aschenborniana
                                              Stevia aschenborniana var. occidentalis
                                            Stevia berlandieri
                                              Stevia berlandieri var. anadenotricha
                                            Stevia caltepecana
                                            Stevia canescens
                                            Stevia caracasana
                                            Stevia clinopodia
                                            Stevia elatior
                                            Stevia eupatoria
                                            Stevia glandulosa
                                              Stevia glandulosa var. gentryi
                                              Stevia glandulosa var. glandulosa
                                            Stevia incognita
                                            Stevia jaliscensis
                                            Stevia jorullensis
                                            Stevia latifolia
                                            Stevia laxa
                                            Stevia lemmonii
                                              Stevia lemmonii var. hispidula
                                              Stevia lemmonii var. lemmonii
                                            Stevia linoides
                                            Stevia lucida
                                              Stevia lucida var. robinsoniana
                                            Stevia madrensis
                                            Stevia martinii
                                            Stevia micradenia
                                            Stevia micrantha
                                            Stevia microchaeta
                                            Stevia myricoides
                                            Stevia nelsonii
                                            Stevia origanoides
                                            Stevia ovata
                                              Stevia ovata var. ovata
                                              Stevia ovata var. texana
                                            Stevia palmeri
                                              Stevia palmeri var. palmeri
                                            Stevia pelophila
                                            Stevia pilosa
                                            Stevia plummerae
                                              Stevia plummerae var. alba
                                              Stevia plummerae var. durangensis
                                              Stevia plummerae var. plummerae
                                            Stevia polycephala
                                            Stevia porphyrea
                                            Stevia pringlei
                                            Stevia purpusii
                                            Stevia rebaudiana
                                            Stevia reticulata
                                            Stevia rhombifolia
                                            Stevia salicifolia
                                                   [Stevia salicifolia var. stenophylla]
                                                   [Stevia stenophylla]
                                              Stevia salicifolia var. salicifolia
                                              Stevia salicifolia var. virgulifera
                                            Stevia scabrella
                                              Stevia scabrella var. venosa
                                            Stevia seleriana
                                            Stevia serrata
                                                   [Stevia serrata var. haplopappa]
                                                   [Stevia serrata var. ivifolia]
                                              Stevia serrata var. ivaefolia
                                              Stevia serrata var. linoides
                                              Stevia serrata var. serrata
                                            Stevia subpubescens
                                              Stevia subpubescens var. intermedia
                                              Stevia subpubescens var. opaca
                                            Stevia tephra
                                            Stevia tomentosa
                                            Stevia trifida
                                            Stevia venosa
                                            Stevia viminea
                                            Stevia viscida
                                    Steviopsis
                                            Steviopsis dryophila
                                            Steviopsis fendleri
                                    Stilpnopappus
                                    Stizolophus
                                            Stizolophus balsamita
                                    Stokesia
                                            Stokesia laevis
                                    Stomatanthes
                                    Strotheria
                                            Strotheria gypsophila
                                    Struchium
                                            Struchium sparganophorum
                                                   [Ethulia sparganophora]
                                    Stuckertiella
                                    Stuessya
                                            Stuessya michoacana
                                    Stylocline
                                            Stylocline acaulis
                                            Stylocline amphibola
                                            Stylocline amphiloba
                                            Stylocline citroleum
                                            Stylocline filaginea
                                              Stylocline filaginea var. depressa
                                              Stylocline filaginea var. filaginea
                                            Stylocline gnaphaloides
                                                   [Stylocline gnaphalioides]
                                            Stylocline intertexta
                                            Stylocline masonii
                                            Stylocline micropoides
                                            Stylocline psilocarphoides
                                            Stylocline sonorensis
                                    Stylopappus
                                            Stylopappus elatus
                                    Symphyotrichum
                                            Symphyotrichum adnatum
                                            Symphyotrichum amethystinum
                                            Symphyotrichum anomalum
                                            Symphyotrichum anticostense
                                            Symphyotrichum ascendens
                                                   [Aster adscendens]
                                                   [Aster ascendens]
                                                   [Aster chilensis ssp. adscendens]
                                                   [Aster macounii]
                                                   [Aster subgriseus]
                                                   [Virgulaster ascendens]
                                            Symphyotrichum bahamense
                                            Symphyotrichum boreale
                                            Symphyotrichum bracei
                                            Symphyotrichum burgessii
                                                   [Aster burgessii]
                                            Symphyotrichum campestre
                                              Symphyotrichum campestre var. bloomeri
                                              Symphyotrichum campestre var. campestre
                                            Symphyotrichum chapmanii
                                            Symphyotrichum chilense
                                              Symphyotrichum chilense var. chilense
                                                     [Aster chilensis var. medius]
                                                     [Aster chilensis]
                                              Symphyotrichum chilense var. invenustum
                                              Symphyotrichum chilense var. medium
                                            Symphyotrichum ciliatum
                                                   [Aster brachyactis]
                                                   [Brachyactis angusta]
                                                   [Brachyactis ciliata ssp. angusta]
                                                   [Brachyactis ciliata]
                                                   [Tripolium angustum]
                                            Symphyotrichum ciliolatum
                                              Symphyotrichum ciliolatum var. comatum
                                              Symphyotrichum ciliolatum var. maccallae
                                              Symphyotrichum ciliolatum var. wilsonii
                                            Symphyotrichum concolor
                                              Symphyotrichum concolor var. concolor
                                              Symphyotrichum concolor var. devestitum
                                            Symphyotrichum cordifolium
                                                   [Aster cordifolius ssp. laevigatus]
                                                   [Aster cordifolius ssp. sagittifolius]
                                                   [Aster cordifolius var. furbishiae]
                                                   [Aster cordifolius var. incisus]
                                                   [Aster cordifolius var. laevigatus]
                                                   [Aster cordifolius var. lanceolatus]
                                                   [Aster cordifolius var. moratus]
                                                   [Aster cordifolius var. polycephalus]
                                                   [Aster cordifolius var. racemiflorus]
                                                   [Aster cordifolius var. sagittifolius]
                                                   [Aster cordifolius]
                                                   [Aster finkii var. moratus]
                                                   [Aster lowrieanus var. incisus]
                                                   [Aster lowrieanus var. lanceolatus]
                                                   [Aster plumarius]
                                                   [Aster sagittifolius]
                                                   [Symphyotrichum cordifolium var. furbishiae]
                                                   [Symphyotrichum cordifolium var. lanceolatum]
                                                   [Symphyotrichum cordifolium var. moratum]
                                                   [Symphyotrichum cordifolium var. polycephalum]
                                                   [Symphyotrichum cordifolium var. racemiflorum]
                                                   [Symphyotrichum sagittifolium]
                                            Symphyotrichum crenifolium
                                            Symphyotrichum cusickii
                                            Symphyotrichum defoliatum
                                            Symphyotrichum depauperatum
                                            Symphyotrichum divaricatum
                                                   [Aster boykinii]
                                                   [Aster carmesinus]
                                                   [Aster castaneus]
                                                   [Aster claytoni]
                                                   [Aster divaricatus]
                                                   [Aster excavatus]
                                                   [Aster exilis var. australis]
                                                   [Aster exilis]
                                                   [Aster flexilus]
                                                   [Aster neomexicana]
                                                   [Aster neomexicanus]
                                                   [Aster stilettiformis]
                                                   [Aster subulatus var. ligulatus]
                                                   [Aster tenebrosus]
                                            Symphyotrichum drummondii
                                              Symphyotrichum drummondii var. drummondii
                                              Symphyotrichum drummondii var. parviceps
                                              Symphyotrichum drummondii var. texanum
                                            Symphyotrichum dumosum
                                              Symphyotrichum dumosum var. dodgei
                                              Symphyotrichum dumosum var. dumosum
                                              Symphyotrichum dumosum var. gracilipes
                                              Symphyotrichum dumosum var. pergracile
                                              Symphyotrichum dumosum var. strictior
                                              Symphyotrichum dumosum var. subulifolium
                                            Symphyotrichum eatonii
                                                   [Aster bracteolatus]
                                                   [Aster cordalenus]
                                                   [Aster eatonii]
                                                   [Aster foliaceus var. eatonii]
                                                   [Aster mearnsii]
                                                   [Aster oregonus]
                                                   [Symphyotrichum bracteolatum]
                                            Symphyotrichum elliotii
                                            Symphyotrichum elliottii
                                            Symphyotrichum ericoides
                                              Symphyotrichum ericoides var. ericoides
                                                     [Aster ericoides var. platyphyllus]
                                                     [Aster ericoides var. prostratus]
                                                     [Aster ericoides var. pusillus]
                                                     [Aster ericoides]
                                                     [Aster exiguus]
                                                     [Aster multiflorus var. exiguus]
                                                     [Aster multiflorus var. prostratus]
                                                     [Aster multiflorus]
                                                     [Aster polycephalus]
                                                     [Lasallea ericoides]
                                                     [Symphyotrichum ericoides var. prostratum]
                                                     [Virgulus ericoides]
                                              Symphyotrichum ericoides var. pansum
                                                     [Aster ericoides ssp. pansus]
                                                     [Aster ericoides var. pansus]
                                                     [Aster multiflorus var. pansus]
                                                     [Aster pansus]
                                              Symphyotrichum ericoides var. stricticaule
                                                     [Aster ericoides var. stricticaulis]
                                                     [Aster multiflorus var. stricticaulis]
                                                     [Aster stricticaulis]
                                            Symphyotrichum eulae
                                            Symphyotrichum falcatum
                                                   [Aster falcatus]
                                              Symphyotrichum falcatum ssp. commutatum
                                              Symphyotrichum falcatum var. commutatum
                                                     [Aster commutatus var. polycephalus]
                                                     [Aster commutatus]
                                                     [Aster cordineri]
                                                     [Aster ericoides var. commutatus]
                                                     [Aster falcatus ssp. commutatus]
                                                     [Aster falcatus var. commutatus]
                                                     [Aster multiflorus var. commutatus]
                                                     [Aster nahanniensis]
                                              Symphyotrichum falcatum var. crassulum
                                                     [Aster adsurgens]
                                                     [Aster commutatus var. crassulus]
                                                     [Aster crassulus]
                                                     [Aster falcatus var. crassulus]
                                              Symphyotrichum falcatum var. falcatum
                                                     [Aster elegantulus]
                                                     [Aster ramulosus]
                                                     [Lasallea falcata]
                                                     [Virgulus falcatus var. commutatus]
                                                     [Virgulus falcatus]
                                            Symphyotrichum fendleri
                                                   [Aster fendleri]
                                                   [Virgulus fendleri]
                                            Symphyotrichum firmum
                                            Symphyotrichum foliaceum
                                              Symphyotrichum foliaceum var. apricum
                                              Symphyotrichum foliaceum var. canbyi
                                                     [Aster foliaceus var. burkei]
                                                     [Aster foliaceus var. canbyi]
                                                     [Aster phyllodes]
                                                     [Aster tweedyi]
                                              Symphyotrichum foliaceum var. foliaceum
                                                     [Aster foliaceus var. hesperius]
                                                     [Aster foliaceus var. lyallii]
                                                     [Aster foliaceus var. sublinearis]
                                                     [Aster foliaceus]
                                              Symphyotrichum foliaceum var. parryi
                                                     [Aster ascendens var. parryi]
                                                     [Aster diabolicus]
                                                     [Aster foliaceus var. frondeus]
                                                     [Aster foliaceus var. parryi]
                                                     [Aster foliaceus var. subpetiolatus]
                                                     [Aster frondeus]
                                            Symphyotrichum fontinale
                                            Symphyotrichum frondosum
                                                   [Aster frondosus]
                                                   [Brachyactis frondosa]
                                                   [Tripolium frondosum]
                                            Symphyotrichum georgianum
                                            Symphyotrichum grandiflorum
                                            Symphyotrichum greatae
                                            Symphyotrichum hallii
                                            Symphyotrichum hendersonii
                                            Symphyotrichum jessicae
                                            Symphyotrichum kralii
                                            Symphyotrichum laeve
                                              Symphyotrichum laeve var. concinnum
                                              Symphyotrichum laeve var. geyeri
                                                     [Aster geyeri]
                                                     [Aster laevis var. geyeri]
                                                     [Aster laevis var. guadalupensis]
                                                     [Aster pickettianus]
                                              Symphyotrichum laeve var. laeve
                                                     [Aster falcidens]
                                                     [Aster laevis var. falcatus]
                                                     [Aster laevis]
                                                     [Aster steeleorum]
                                              Symphyotrichum laeve var. purpuratum
                                            Symphyotrichum lanceolatum
                                              Symphyotrichum lanceolatum var. hesperium
                                                     [Aster hesperius var. laetevirens]
                                                     [Aster hesperius var. wootonii]
                                                     [Aster hesperius]
                                                     [Aster laetevirens]
                                                     [Aster lanceolatus ssp. hesperius]
                                                     [Aster osterhoutii]
                                                     [Aster wootonii]
                                                     [Symphyotrichum hesperium]
                                                     [Symphyotrichum lanceolatum ssp. hesperium]
                                              Symphyotrichum lanceolatum var. hirsuticaule
                                              Symphyotrichum lanceolatum var. interior
                                              Symphyotrichum lanceolatum var. lanceolatum
                                                     [Aster bellidiflorus]
                                                     [Aster interior]
                                                     [Aster lamarckianus]
                                                     [Aster lanceolatus ssp. interior]
                                                     [Aster lanceolatus ssp. simplex]
                                                     [Aster lanceolatus var. hirsuticaulis]
                                                     [Aster lanceolatus var. interior]
                                                     [Aster lanceolatus var. latifolius]
                                                     [Aster lanceolatus var. simplex]
                                                     [Aster laxus]
                                                     [Aster paniculatus var. simplex]
                                                     [Aster paniculatus]
                                                     [Aster simplex var. estuarinus]
                                                     [Aster simplex var. interior]
                                                     [Aster simplex var. ramosissimus]
                                                     [Aster simplex]
                                                     [Aster tenuifolius var. ramosissimus]
                                                     [Symphyotrichum lanceolatum ssp. lanceolatum]
                                                     [Symphyotrichum simplex]
                                              Symphyotrichum lanceolatum var. latifolium
                                            Symphyotrichum lateriflorum
                                              Symphyotrichum lateriflorum var. angustifolium
                                              Symphyotrichum lateriflorum var. flagellare
                                              Symphyotrichum lateriflorum var. hirsuticaule
                                              Symphyotrichum lateriflorum var. horizontale
                                              Symphyotrichum lateriflorum var. lateriflorum
                                              Symphyotrichum lateriflorum var. spatelliforme
                                              Symphyotrichum lateriflorum var. tenuipes
                                            Symphyotrichum laurentianum
                                            Symphyotrichum lentum
                                            Symphyotrichum leone
                                                   [Aster leonis]
                                            Symphyotrichum lowrieanum
                                            Symphyotrichum lucayanum
                                                   [Aster lucayanus]
                                            Symphyotrichum molle
                                            Symphyotrichum nahanniense
                                            Symphyotrichum novae-angliae
                                                   [Aster novae-angliae]
                                                   [Lasallea novae-angliae]
                                                   [Virgulus novae-angliae]
                                            Symphyotrichum novi-belgii
                                              Symphyotrichum novi-belgii var. crenifolium
                                              Symphyotrichum novi-belgii var. elodes
                                              Symphyotrichum novi-belgii var. novi-belgii
                                                     [Aster eminens]
                                                     [Aster junceus]
                                                     [Aster longifolius var. villicaulis]
                                                     [Aster longifolius]
                                                     [Symphyotrichum longifolium]
                                              Symphyotrichum novi-belgii var. novibelgii
                                              Symphyotrichum novi-belgii var. tardiflorum
                                              Symphyotrichum novi-belgii var. villicaule
                                            Symphyotrichum oblongifolium
                                                   [Aster kumleinii]
                                                   [Aster oblongifolius var. angustatus]
                                                   [Aster oblongifolius var. orientis]
                                                   [Aster oblongifolius var. rigidulus]
                                                   [Aster oblongifolius]
                                                   [Lasallea oblongifolia]
                                                   [Virgulus oblongifolius]
                                            Symphyotrichum ontarione
                                              Symphyotrichum ontarione var. glabratum
                                            Symphyotrichum ontarionis
                                              Symphyotrichum ontarionis var. glabratum
                                              Symphyotrichum ontarionis var. ontarionis
                                            Symphyotrichum oolentangiense
                                              Symphyotrichum oolentangiense var. oolentangiense
                                              Symphyotrichum oolentangiense var. poaceum
                                            Symphyotrichum parviceps
                                            Symphyotrichum patens
                                              Symphyotrichum patens var. gracile
                                              Symphyotrichum patens var. patens
                                                     [Aster patens var. floridanus]
                                                     [Aster patens]
                                                     [Lasallea patens]
                                                     [Virgulus patens var. gracilis]
                                                     [Virgulus patens var. patentissimus]
                                                     [Virgulus patens]
                                              Symphyotrichum patens var. patentissimum
                                            Symphyotrichum phlogifolium
                                                   [Aster patens var. phlogifolius]
                                                   [Aster phlogifolius]
                                                   [Virgulus patens var. phlogifolius]
                                            Symphyotrichum pilosum
                                              Symphyotrichum pilosum var. pilosum
                                              Symphyotrichum pilosum var. pringlei
                                            Symphyotrichum plumosum
                                            Symphyotrichum porteri
                                                   [Aster ericoides var. strictus]
                                                   [Aster porteri]
                                            Symphyotrichum potosinum
                                                   [Aster lemmonii]
                                                   [Aster potosinus]
                                            Symphyotrichum praealtum
                                                   [Aster coerulescens]
                                              Symphyotrichum praealtum var. angustior
                                              Symphyotrichum praealtum var. nebraskense
                                              Symphyotrichum praealtum var. praealtum
                                                     [Aster caerulescens]
                                                     [Aster novi-belgii var. litoreus]
                                                     [Aster praealtus var. angustior]
                                                     [Aster praealtus var. caerulescens]
                                                     [Aster praealtus var. imbricatior]
                                                     [Aster praealtus var. texicola]
                                                     [Aster praealtus]
                                                     [Aster salicifolius]
                                                     [Symphyotrichum novi-belgii var. litoreum]
                                                     [Symphyotrichum praealtum var. texicola]
                                              Symphyotrichum praealtum var. subasperum
                                            Symphyotrichum pratense
                                            Symphyotrichum prenanthoides
                                            Symphyotrichum priceae
                                            Symphyotrichum puniceum
                                              Symphyotrichum puniceum var. calderi
                                              Symphyotrichum puniceum var. puniceum
                                              Symphyotrichum puniceum var. scabricaule
                                            Symphyotrichum pygmaeum
                                            Symphyotrichum racemosum
                                              Symphyotrichum racemosum var. subdumosum
                                            Symphyotrichum retroflexum
                                            Symphyotrichum rhiannon
                                            Symphyotrichum robynsianum
                                            Symphyotrichum sericeum
                                                   [Aster sericeus]
                                                   [Lasallea sericea ssp. pratensis]
                                                   [Lasallea sericea]
                                                   [Virgulus sericeus]
                                            Symphyotrichum shortii
                                            Symphyotrichum simmondsii
                                            Symphyotrichum spathulatum
                                              Symphyotrichum spathulatum var. intermedium
                                              Symphyotrichum spathulatum var. spathulatum
                                                     [Aster ascendens var. fremontii]
                                                     [Aster delectabilis]
                                                     [Aster fremontii var. parishii]
                                                     [Aster fremontii]
                                                     [Aster occidentalis var. delectabilis]
                                                     [Aster occidentalis var. fremontii]
                                                     [Aster occidentalis var. intermedius]
                                                     [Aster occidentalis var. parishii]
                                                     [Aster occidentalis]
                                                     [Aster spathulatus]
                                                     [Symphyotrichum spathulatum var. fremontii]
                                                     [Tripolium occidentale]
                                              Symphyotrichum spathulatum var. yosemitanum
                                            Symphyotrichum squamatum
                                            Symphyotrichum subgeminatum
                                            Symphyotrichum subspicatum
                                              Symphyotrichum subspicatum var. grayi
                                              Symphyotrichum subspicatum var. subspicatum
                                            Symphyotrichum subulatum
                                                   [Aster subulatus var. euroauster]
                                                   [Aster subulatus var. obtusifolius]
                                              Symphyotrichum subulatum var. elongatum
                                                     [Aster bahamensis]
                                              Symphyotrichum subulatum var. parviflorum
                                                     [Aster inconspicuus]
                                                     [Aster subulatus var. cubensis]
                                                     [Symphyotrichum expansum]
                                                     [Tripolium subulatum var. parviflorum]
                                              Symphyotrichum subulatum var. squamatum
                                              Symphyotrichum subulatum var. subulatum
                                              Symphyotrichum subulatum var. ligulatum
                                            Symphyotrichum tenuifolium
                                              Symphyotrichum tenuifolium var. aphyllum
                                              Symphyotrichum tenuifolium var. tenuifolium
                                            Symphyotrichum tradescantii
                                            Symphyotrichum turbinellum
                                            Symphyotrichum undulatum
                                            Symphyotrichum urophyllum
                                            Symphyotrichum vahlii
                                              Symphyotrichum vahlii var. vahlii
                                            Symphyotrichum walteri
                                            Symphyotrichum welshii
                                                   [Aster welshii]
                                            Symphyotrichum x amethystinum
                                            Symphyotrichum x batesii
                                            Symphyotrichum x columbianum
                                            Symphyotrichum x finkii
                                            Symphyotrichum x gravesii
                                            Symphyotrichum x longulum
                                            Symphyotrichum x salignum
                                            Symphyotrichum x schistosum
                                            Symphyotrichum x tardiflorum
                                            Symphyotrichum x versicolor
                                            Symphyotrichum x woldenii
                                            Symphyotrichum yukonense
                                    Syncretocarpus
                                    Synedrella
                                            Synedrella nodiflora
                                                   [Verbesina nodiflora]
                                    Synedrellopsis
                                    Synosma
                                            Synosma suaveolens
                                    Syntrichopappus
                                            Syntrichopappus fremontii
                                            Syntrichopappus lemmonii
                                    Tafalla
                                    Tagetes
                                            Tagetes campanulata
                                            Tagetes coronopifolia
                                            Tagetes erecta
                                                   [Tagetes major]
                                            Tagetes filifolia
                                            Tagetes foetidissima
                                            Tagetes jaliscensis
                                            Tagetes lacera
                                            Tagetes lemmonii
                                                   [Tagetes alamensis]
                                                   [Tagetes palmeri]
                                            Tagetes lucida
                                            Tagetes lunulata
                                            Tagetes micrantha
                                                   [Tagetes fragrantissima]
                                            Tagetes microglossa
                                            Tagetes minima
                                            Tagetes minuta
                                                   [Tagetes bonariensis]
                                                   [Tagetes glandulifera]
                                                   [Tagetes glandulosa]
                                                   [Tagetes porophylla]
                                            Tagetes parryi
                                            Tagetes patula
                                                   [Tagetes corymbosa]
                                                   [Tagetes remotiflora]
                                                   [Tagetes signata]
                                                   [Tagetes tenuifolia]
                                            Tagetes pringlei
                                            Tagetes pusilla
                                            Tagetes stenophylla
                                            Tagetes subulata
                                            Tagetes triradiata
                                            Tagetes wislizeni
                                    Talamancalia
                                    Tamaulipa
                                            Tamaulipa azurea
                                    Tanacetum
                                            Tanacetum bajacalifornicum
                                            Tanacetum balsamita
                                                   [Balsamita major var. tanacetoides]
                                                   [Balsamita major]
                                                   [Chrysanthemum balsamita var. tanacetoides]
                                                   [Chrysanthemum balsamita]
                                                   [Pyrethrum majus]
                                            Tanacetum bipinnatum
                                              Tanacetum bipinnatum ssp. bipinnatum
                                              Tanacetum bipinnatum ssp. huronense
                                            Tanacetum camphoratum
                                            Tanacetum capitatum
                                            Tanacetum chiliophyllum
                                            Tanacetum cinerariifolium
                                            Tanacetum coccineum
                                            Tanacetum compactum
                                            Tanacetum corymbosum
                                            Tanacetum douglasii
                                            Tanacetum huronense
                                              Tanacetum huronense var. bifarium
                                              Tanacetum huronense var. floccosum
                                              Tanacetum huronense var. johannense
                                              Tanacetum huronense var. terrae-novae
                                            Tanacetum nuttallii
                                            Tanacetum parthenium
                                                   [Matricaria parthenium]
                                            Tanacetum potentilloides
                                              Tanacetum potentilloides var. nitrophilum
                                            Tanacetum santolinoides
                                            Tanacetum simplex
                                            Tanacetum vulgare
                                                   [Chrysanthemum uliginosum]
                                                   [Chrysanthemum vulgare]
                                                   [Tanacetum boreale]
                                                   [Tanacetum vulgare var. crispum]
                                    Taraxacum
                                            Taraxacum alaskanum
                                            Taraxacum alatum
                                            Taraxacum ambigens
                                              Taraxacum ambigens var. flutius
                                            Taraxacum amphiphron
                                            Taraxacum arcticum
                                            Taraxacum arctogenum
                                            Taraxacum brachyceras
                                            Taraxacum californicum
                                            Taraxacum carneocoloratum
                                            Taraxacum carthamopsis
                                            Taraxacum ceratophorum
                                            Taraxacum dumetorum
                                            Taraxacum eriophorum
                                            Taraxacum erythrospermum
                                                   [Taraxacum laevigatum]
                                            Taraxacum eurylepium
                                            Taraxacum holmenianum
                                            Taraxacum hyparcticum
                                            Taraxacum hyperboreum
                                            Taraxacum integratum
                                            Taraxacum lacerum
                                            Taraxacum lapponicum
                                            Taraxacum lateritium
                                            Taraxacum latilobum
                                                   [Taraxacum officinale ssp. officinale]
                                            Taraxacum latispinulosum
                                            Taraxacum laurentianum
                                            Taraxacum leucanthum
                                            Taraxacum longii
                                            Taraxacum mackenziense
                                            Taraxacum malteanum
                                            Taraxacum maurolepium
                                            Taraxacum mitratum
                                            Taraxacum multesimum
                                            Taraxacum naevosum
                                            Taraxacum officinale
                                              Taraxacum officinale ssp. ceratophorum
                                            Taraxacum olympicum
                                            Taraxacum ovinum
                                            Taraxacum palustre
                                                   [Taraxacum turfosum]
                                            Taraxacum paucisquamosum
                                            Taraxacum pellianum
                                            Taraxacum phymatocarpum
                                            Taraxacum pseudonorvegicum
                                            Taraxacum pumilum
                                            Taraxacum purpuridens
                                            Taraxacum scopulorum
                                                   [Taraxacum lyratum]
                                            Taraxacum spectabile
                                            Taraxacum stevenii
                                            Taraxacum taraxacum
                                            Taraxacum torngatense
                                            Taraxacum trigonolobum
                                            Taraxacum umbrinum
                                    Telanthophora
                                    Tephroseris
                                            Tephroseris atropurpurea
                                              Tephroseris atropurpurea ssp. atropurpurea
                                              Tephroseris atropurpurea ssp. frigida
                                              Tephroseris atropurpurea ssp. tomentosa
                                            Tephroseris frigida
                                            Tephroseris integrifolia
                                              Tephroseris integrifolia ssp. atropurpurea
                                            Tephroseris kjellmanii
                                            Tephroseris lindstroemii
                                            Tephroseris palustris
                                            Tephroseris tundricola
                                              Tephroseris tundricola var. lindstroemii
                                            Tephroseris yukonensis
                                    Tepion
                                            Tepion alatum
                                    Tessaria
                                            Tessaria absinthioides
                                            Tessaria borealis
                                            Tessaria integrifolia
                                    Tetrachyron
                                            Tetrachyron grayi
                                            Tetrachyron manicatum
                                    Tetradymia
                                            Tetradymia argyraea
                                            Tetradymia axillaris
                                              Tetradymia axillaris var. axillaris
                                              Tetradymia axillaris var. longispina
                                                     [Tetradymia spinosa var. longispina]
                                            Tetradymia canescens
                                                   [Tetradymia canescens var. inermis]
                                            Tetradymia comosa
                                              Tetradymia comosa ssp. tetrameres
                                            Tetradymia filifolia
                                            Tetradymia glabrata
                                            Tetradymia inermis
                                            Tetradymia linearis
                                            Tetradymia nuttallii
                                            Tetradymia spinosa
                                            Tetradymia stenolepis
                                            Tetradymia tetrameres
                                    Tetragonotheca
                                            Tetragonotheca helianthoides
                                            Tetragonotheca ludoviciana
                                            Tetragonotheca repanda
                                                   [Halea repanda]
                                            Tetragonotheca texana
                                    Tetramolopium
                                            Tetramolopium arbusculum
                                            Tetramolopium arenarium
                                              Tetramolopium arenarium ssp. arenarium
                                              Tetramolopium arenarium ssp. laxum
                                              Tetramolopium arenarium var. dentatum
                                            Tetramolopium calcisabulorum
                                            Tetramolopium capillare
                                            Tetramolopium consanguineum
                                              Tetramolopium consanguineum ssp. consanguineum
                                              Tetramolopium consanguineum ssp. leptophyllum
                                            Tetramolopium conyzoides
                                              Tetramolopium conyzoides var. dentatum
                                            Tetramolopium filiforme
                                              Tetramolopium filiforme var. filiforme
                                              Tetramolopium filiforme var. polyphyllum
                                            Tetramolopium humile
                                              Tetramolopium humile ssp. haleakalae
                                              Tetramolopium humile ssp. humile
                                              Tetramolopium humile var. skottsbergii
                                            Tetramolopium lepidotum
                                              Tetramolopium lepidotum ssp. arbusculum
                                              Tetramolopium lepidotum ssp. lepidotum
                                              Tetramolopium lepidotum var. luxurians
                                            Tetramolopium polyphyllum
                                            Tetramolopium remyi
                                            Tetramolopium rockii
                                              Tetramolopium rockii var. calcisabulorum
                                              Tetramolopium rockii var. rockii
                                            Tetramolopium sylvae
                                            Tetramolopium tenerrimum
                                    Tetraneuris
                                            Tetraneuris acaulis
                                                   [Hymenoxys acaulis]
                                              Tetraneuris acaulis var. acaulis
                                                     [Actinea acaulis var. simplex]
                                                     [Actinea acaulis]
                                                     [Actinella acaulis]
                                                     [Hymenoxys acaulis var. acaulis]
                                                     [Tetraneuris simplex]
                                              Tetraneuris acaulis var. arizonica
                                                     [Actinea acaulis var. arizonica]
                                                     [Hymenoxys acaulis var. arizonica]
                                                     [Hymenoxys acaulis var. nana]
                                                     [Tetraneuris acaulis var. nana]
                                                     [Tetraneuris arizonica]
                                              Tetraneuris acaulis var. caespitosa
                                                     [Hymenoxys acaulis var. caespitosa]
                                                     [Hymenoxys acaulis var. lanata]
                                                     [Tetraneuris brevifolia]
                                              Tetraneuris acaulis var. epunctata
                                                     [Hymenoxys acaulis var. epunctata]
                                                     [Tetraneuris crandallii]
                                                     [Tetraneuris epunctata]
                                            Tetraneuris angustata
                                            Tetraneuris angustifolia
                                            Tetraneuris argentea
                                                   [Actinella argentea]
                                                   [Hymenoxys argentea]
                                            Tetraneuris formosa
                                            Tetraneuris herbacea
                                                   [Hymenoxys acaulis var. glabra]
                                                   [Hymenoxys herbacea]
                                            Tetraneuris intermedia
                                            Tetraneuris ivesiana
                                                   [Hymenoxys acaulis var. ivesiana]
                                                   [Hymenoxys argentea var. ivesiana]
                                                   [Hymenoxys ivesiana]
                                                   [Tetraneuris mancosensis]
                                                   [Tetraneuris pilosa]
                                            Tetraneuris linearifolia
                                              Tetraneuris linearifolia var. arenicola
                                              Tetraneuris linearifolia var. linearifolia
                                                     [Hymenoxys linearifolia]
                                            Tetraneuris scaposa
                                              Tetraneuris scaposa var. argyrocaulon
                                              Tetraneuris scaposa var. linearis
                                              Tetraneuris scaposa var. scaposa
                                                     [Hymenoxys glabra]
                                                     [Hymenoxys scaposa var. argyrocaulon]
                                                     [Hymenoxys scaposa var. glabra]
                                                     [Hymenoxys scaposa var. linearis]
                                                     [Hymenoxys scaposa var. villosa]
                                                     [Hymenoxys scaposa]
                                                     [Tetraneuris fastigiata]
                                                     [Tetraneuris glabra]
                                                     [Tetraneuris stenophylla]
                                              Tetraneuris scaposa var. villosa
                                            Tetraneuris torreyana
                                                   [Hymenoxys depressa]
                                                   [Hymenoxys torreyana]
                                                   [Tetraneuris depressa]
                                            Tetraneuris trinervata
                                            Tetraneuris turneri
                                                   [Hymenoxys turneri]
                                            Tetraneuris verdiensis
                                    Thelechitonia
                                            Thelechitonia gracilis
                                    Thelesperma
                                            Thelesperma ambiguum
                                                   [Thelesperma fraternum]
                                                   [Thelesperma megapotamicum var. ambiguum]
                                            Thelesperma burridgeanum
                                            Thelesperma curvicarpum
                                            Thelesperma filifolium
                                              Thelesperma filifolium var. filifolium
                                              Thelesperma filifolium var. intermedium
                                            Thelesperma flavodiscum
                                            Thelesperma formosum
                                            Thelesperma intermedium
                                            Thelesperma longipes
                                            Thelesperma marginatum
                                            Thelesperma megapotamicum
                                                   [Bidens megapotamica]
                                                   [Thelesperma gracile]
                                            Thelesperma nuecense
                                            Thelesperma pubescens
                                            Thelesperma simplicifolium
                                            Thelesperma subaequale
                                            Thelesperma subnudum
                                                   [Thelesperma pubescens var. caespitosum]
                                              Thelesperma subnudum var. alpinum
                                              Thelesperma subnudum var. caespitosum
                                              Thelesperma subnudum var. maliterrimum
                                              Thelesperma subnudum var. marginatum
                                              Thelesperma subnudum var. subnudum
                                            Thelesperma tenue
                                            Thelesperma trifidum
                                            Thelesperma windhamii
                                    Thurovia
                                            Thurovia triflora
                                    Thymophylla
                                            Thymophylla acerosa
                                                   [Dyssodia acerosa]
                                            Thymophylla anomala
                                                   [Dyssodia anomala]
                                            Thymophylla aurea
                                              Thymophylla aurea var. aurea
                                                     [Dyssodia aurea]
                                                     [Lowellia aurea]
                                              Thymophylla aurea var. polychaeta
                                                     [Dyssodia aurea var. polychaeta]
                                                     [Dyssodia polychaeta]
                                                     [Thymophylla polychaeta]
                                            Thymophylla belenidium
                                            Thymophylla concinna
                                                   [Dyssodia concinna]
                                            Thymophylla micropoides
                                            Thymophylla pentachaeta
                                                   [Dyssodia pentachaeta]
                                              Thymophylla pentachaeta var. belenidium
                                                     [Dyssodia belenidium]
                                                     [Dyssodia pentachaeta var. belenidium]
                                                     [Dyssodia thurberi]
                                              Thymophylla pentachaeta var. hartwegii
                                                     [Dyssodia hartwegii]
                                                     [Dyssodia pentachaeta ssp. hartwegii]
                                                     [Dyssodia pentachaeta var. hartwegii]
                                              Thymophylla pentachaeta var. pentachaeta
                                                     [Hymenatherum pentachaetum]
                                              Thymophylla pentachaeta var. puberula
                                                     [Dyssodia pentachaeta var. puberula]
                                            Thymophylla pringlei
                                            Thymophylla setifolia
                                              Thymophylla setifolia var. greggii
                                              Thymophylla setifolia var. radiata
                                                     [Dyssodia setifolia var. greggii]
                                                     [Dyssodia setifolia var. radiata]
                                              Thymophylla setifolia var. setifolia
                                                     [Dyssodia setifolia]
                                            Thymophylla tenuifolia
                                            Thymophylla tenuiloba
                                              Thymophylla tenuiloba var. tenuiloba
                                              Thymophylla tenuiloba var. texana
                                              Thymophylla tenuiloba var. treculii
                                              Thymophylla tenuiloba var. wrightii
                                            Thymophylla tephroleuca
                                    Tilesia
                                    Tithonia
                                            Tithonia auriculata
                                            Tithonia brachypappa
                                            Tithonia calva
                                              Tithonia calva var. auriculata
                                              Tithonia calva var. calva
                                              Tithonia calva var. lancifolia
                                            Tithonia diversifolia
                                            Tithonia fruticosa
                                            Tithonia pedunculata
                                            Tithonia rotundifolia
                                                   [Tagetes rotundifolia]
                                                   [Tithonia speciosa]
                                            Tithonia thurberi
                                            Tithonia tubaeformis
                                            Tithonia tubiformis
                                    Toiyabea
                                            Toiyabea alpina
                                    Tolpis
                                            Tolpis barbata
                                            Tolpis umbellata
                                            Tolpis virgata
                                    Tomanthea
                                            Tomanthea daralaghezica
                                    Tomentaurum
                                            Tomentaurum niveum
                                    Tonestus
                                            Tonestus aberrans
                                            Tonestus alpinus
                                            Tonestus eximius
                                            Tonestus graniticus
                                                   [Haplopappus graniticus]
                                            Tonestus kingii
                                              Tonestus kingii var. barnebyana
                                              Tonestus kingii var. kingii
                                            Tonestus lyallii
                                            Tonestus microcephalus
                                                   [Haplopappus microcephalus]
                                            Tonestus peirsonii
                                            Tonestus pygmaeus
                                                   [Haplopappus pygmaeus]
                                    Townsendia
                                            Townsendia alpigena
                                              Townsendia alpigena var. alpigena
                                              Townsendia alpigena var. caelilinensis
                                              Townsendia alpigena var. minima
                                            Townsendia annua
                                            Townsendia anomala
                                            Townsendia aprica
                                            Townsendia bakeri
                                            Townsendia condensata
                                              Townsendia condensata var. anomala
                                              Townsendia condensata var. condensata
                                            Townsendia eximia
                                                   [Townsendia vreelandii]
                                            Townsendia exscapa
                                                   [Aster exscapus]
                                                   [Townsendia intermedia]
                                                   [Townsendia sericea]
                                            Townsendia fendleri
                                            Townsendia florifer
                                              Townsendia florifer var. watsonii
                                            Townsendia florifera
                                              Townsendia florifera var. watsonii
                                            Townsendia formosa
                                                   [Townsendia pinetorum]
                                            Townsendia glabella
                                            Townsendia goodrichii
                                            Townsendia grandiflora
                                            Townsendia gypsophila
                                            Townsendia hookeri
                                            Townsendia incana
                                                   [Townsendia arizonica]
                                            Townsendia jonesii
                                              Townsendia jonesii var. jonesii
                                                     [Townsendia mensana var. jonesii]
                                              Townsendia jonesii var. lutea
                                              Townsendia jonesii var. tumulosa
                                            Townsendia leptotes
                                                   [Townsendia sericea var. leptotes]
                                            Townsendia mensana
                                            Townsendia mexicana
                                            Townsendia microcephala
                                            Townsendia minima
                                            Townsendia montana
                                              Townsendia montana var. caelilinensis
                                              Townsendia montana var. minima
                                            Townsendia nuttallii
                                            Townsendia parryi
                                            Townsendia rothrockii
                                            Townsendia scapigera
                                              Townsendia scapigera var. caulescens
                                            Townsendia smithii
                                            Townsendia spathulata
                                            Townsendia strigosa
                                            Townsendia texensis
                                    Tracyina
                                            Tracyina rostrata
                                    Tragoceros
                                            Tragoceros mocinianus
                                            Tragoceros zinnioides
                                    Tragopogon
                                            Tragopogon dubius
                                                   [Tragopogon dubius ssp. major]
                                                   [Tragopogon major]
                                            Tragopogon floccosus
                                            Tragopogon hybridus
                                            Tragopogon kemulariae
                                            Tragopogon lamottei
                                                   [Tragopogon orientalis]
                                                   [Tragopogon pratensis ssp. orientalis]
                                            Tragopogon mirabilis
                                            Tragopogon mirus
                                            Tragopogon miscellus
                                            Tragopogon porrifolius
                                            Tragopogon pratensis
                                            Tragopogon x crantzii
                                            Tragopogon x neohybridus
                                    Trichocline
                                    Trichocoronis
                                            Trichocoronis rivularis
                                            Trichocoronis wrightii
                                                   [Trichocoronis riparia]
                                              Trichocoronis wrightii var. wigginsii
                                              Trichocoronis wrightii var. wrightii
                                    Trichocoryne
                                            Trichocoryne connata
                                    Trichogonia
                                    Tricholepis
                                            Tricholepis nigrescens
                                              Tricholepis nigrescens var. donnellii
                                    Trichoptilium
                                            Trichoptilium incisum
                                    Trichospira
                                    Tridax
                                            Tridax accedens
                                            Tridax balbisioides
                                            Tridax bicolor
                                            Tridax brachylepis
                                            Tridax candidissima
                                            Tridax coronopifolia
                                            Tridax dubia
                                            Tridax erecta
                                            Tridax leptophylla
                                            Tridax luisana
                                            Tridax mexicana
                                            Tridax platyphylla
                                            Tridax procumbens
                                            Tridax tenuifolia
                                            Tridax trilobata
                                            Tridax yecorana
                                    Trigonospermum
                                            Trigonospermum annuum
                                            Trigonospermum floribundum
                                            Trigonospermum melampodioides
                                    Trilisa
                                            Trilisa odoratissima
                                            Trilisa paniculata
                                    Trimorpha
                                            Trimorpha acris
                                              Trimorpha acris var. asteroides
                                              Trimorpha acris var. debilis
                                              Trimorpha acris var. kamtschatica
                                            Trimorpha borealis
                                            Trimorpha elata
                                            Trimorpha elongata
                                            Trimorpha scotteri
                                    Triniteurybia
                                            Triniteurybia aberrans
                                    Tripleurospermum
                                            Tripleurospermum inodorum
                                            Tripleurospermum maritimum
                                              Tripleurospermum maritimum ssp. maritimum
                                              Tripleurospermum maritimum ssp. phaeocephalum
                                                     [Matricaria ambigua]
                                                     [Matricaria hookeri]
                                                     [Matricaria maritima ssp. phaeocephala]
                                                     [Matricaria maritima var. nana]
                                                     [Tripleurospermum phaeocephalum]
                                            Tripleurospermum perforatum
                                    Tripolium
                                            Tripolium oregonum
                                            Tripolium pannonicum
                                                   [Aster tripolium ssp. pannonicus]
                                                   [Aster tripolium]
                                    Tripteris
                                            Tripteris vaillantii
                                    Trixis
                                            Trixis angustifolia
                                            Trixis cacalioides
                                            Trixis californica
                                              Trixis californica var. californica
                                            Trixis divaricata
                                            Trixis frutescens
                                            Trixis hyposericea
                                            Trixis inula
                                            Trixis longifolia
                                            Trixis michuacana
                                              Trixis michuacana var. longifolia
                                            Trixis peninsularis
                                            Trixis pringlei
                                            Trixis pterocaulis
                                            Trixis radialis
                                            Trixis suffruticosa
                                            Trixis vauthieri
                                            Trixis wrightii
                                    Troximon
                                            Troximon apargioides
                                            Troximon arizonicum
                                            Troximon aurantiacum
                                            Troximon plebeium
                                    Tuberostylis
                                    Tuckermannia
                                    Tussilago
                                            Tussilago farfara
                                            Tussilago nutans
                                    Uleophytum
                                    Unamia
                                            Unamia alba
                                            Unamia lutescens
                                    Unxia
                                    Urbinella
                                            Urbinella palmeri
                                    Urolepis
                                    Uropappus
                                            Uropappus lindleyi
                                                   [Microseris lindleyi]
                                                   [Microseris linearifolia]
                                                   [Uropappus linearifolius]
                                    Urospermum
                                            Urospermum echioides
                                            Urospermum picroides
                                    Ursinia
                                            Ursinia anthemoides
                                            Ursinia calenduliflora
                                            Ursinia nana
                                    Vanclevea
                                    Varilla
                                            Varilla mexicana
                                              Varilla mexicana var. gypsophila
                                            Varilla texana
                                    Varthemia
                                            Varthemia montana
                                    Vasquezia
                                    Venegasia
                                            Venegasia carpesioides
                                            Venegasia deltoidea
                                    Venidium
                                            Venidium fastuosum
                                    Verbesina
                                            Verbesina alata
                                            Verbesina alcabrerae
                                            Verbesina alternifolia
                                                   [Actinomeris alternifolia]
                                                   [Ridan alternifolia]
                                            Verbesina angustifolia
                                            Verbesina apiculata
                                            Verbesina apleura
                                            Verbesina aristata
                                            Verbesina aspera
                                                   [Chaenocephalus lobatus]
                                            Verbesina australis
                                            Verbesina callilepis
                                            Verbesina capitaneja
                                            Verbesina chapmanii
                                            Verbesina chihuahuensis
                                            Verbesina cinerascens
                                            Verbesina corral-diazii
                                            Verbesina crocata
                                            Verbesina discoidea
                                            Verbesina dissita
                                            Verbesina encelioides
                                              Verbesina encelioides ssp. exauriculata
                                                     [Verbesina encelioides var. exauriculata]
                                                     [Verbesina exauriculata]
                                                     [Ximenesia encelioides var. exauriculata]
                                                     [Ximenesia exauriculata]
                                            Verbesina fastigiata
                                            Verbesina fayi
                                            Verbesina felgeri
                                            Verbesina gentryi
                                            Verbesina gigantea
                                            Verbesina gracilipes
                                            Verbesina grayi
                                            Verbesina greenmanii
                                            Verbesina hastata
                                            Verbesina helianthoides
                                            Verbesina heterocarpa
                                            Verbesina heterophylla
                                            Verbesina hypomalaca
                                            Verbesina jacksonii
                                            Verbesina klattii
                                            Verbesina laciniata
                                            Verbesina lanata
                                            Verbesina langlassei
                                            Verbesina lavenia
                                            Verbesina liebmannii
                                            Verbesina lindenii
                                            Verbesina lindheimeri
                                            Verbesina longifolia
                                                   [Actinomeris longifolia]
                                            Verbesina lottiana
                                            Verbesina lundellii
                                            Verbesina microptera
                                                   [Verbesina encelioides ssp. encelioides]
                                            Verbesina montanoifolia
                                              Verbesina montanoifolia var. leptopoda
                                            Verbesina myriocephala
                                            Verbesina nana
                                                   [Wootonella nana]
                                                   [Ximenesia encelioides var. nana]
                                                   [Ximenesia nana]
                                            Verbesina neriifolia
                                            Verbesina nervosa
                                                   [Chaenocephalus venosus]
                                            Verbesina nudicaulis
                                            Verbesina occidentalis
                                            Verbesina oerstediana
                                            Verbesina oligantha
                                            Verbesina oligocephala
                                            Verbesina olivacea
                                            Verbesina olsenii
                                            Verbesina oncophora
                                            Verbesina oreophila
                                            Verbesina ovatifolia
                                            Verbesina palmeri
                                              Verbesina palmeri ssp. oligocephala
                                            Verbesina pantoptera
                                            Verbesina parviflora
                                              Verbesina parviflora var. zacatecana
                                            Verbesina pedunculosa
                                            Verbesina peninsularis
                                            Verbesina persicifolia
                                            Verbesina pleistocephala
                                            Verbesina propinqua
                                                   [Chaenocephalus propinquus]
                                            Verbesina pustulata
                                            Verbesina robinsonii
                                            Verbesina rothrockii
                                                   [Ancistrophora wrightii]
                                                   [Verbesina longipes]
                                            Verbesina rupestris
                                                   [Chaenocephalus rupestris]
                                            Verbesina scabrida
                                            Verbesina scaposa
                                            Verbesina sericea
                                            Verbesina serrata
                                            Verbesina sinaloensis
                                            Verbesina sinuata
                                            Verbesina sphaerocephala
                                            Verbesina stricta
                                            Verbesina strotheri
                                            Verbesina suncho
                                            Verbesina synotis
                                            Verbesina tetraptera
                                            Verbesina texana
                                            Verbesina turbacensis
                                            Verbesina virgata
                                            Verbesina virginica
                                              Verbesina virginica var. insularis
                                              Verbesina virginica var. laciniata
                                              Verbesina virginica var. virginica
                                            Verbesina walteri
                                            Verbesina warei
                                    Vernonia
                                            Vernonia acaulis
                                            Vernonia alamanii
                                            Vernonia albicaulis
                                                   [Lepidaploa glabra]
                                            Vernonia angustifolia
                                              Vernonia angustifolia ssp. angustifolia
                                              Vernonia angustifolia ssp. mohrii
                                              Vernonia angustifolia ssp. scaberrima
                                              Vernonia angustifolia var. mohrii
                                              Vernonia angustifolia var. scaberrima
                                            Vernonia anthelmintica
                                            Vernonia arborescens
                                            Vernonia arctioides
                                            Vernonia argyropappa
                                            Vernonia arkansana
                                            Vernonia autumnalis
                                            Vernonia baldwinii
                                              Vernonia baldwinii ssp. baldwinii
                                              Vernonia baldwinii ssp. interior
                                            Vernonia barbinervis
                                            Vernonia barclayi
                                            Vernonia blodgettii
                                            Vernonia boquerona
                                            Vernonia borinquensis
                                            Vernonia canescens
                                            Vernonia cinerea
                                              Vernonia cinerea var. parviflora
                                            Vernonia cordata
                                              Vernonia cordata var. hooveri
                                            Vernonia crinita
                                            Vernonia ctenophora
                                            Vernonia deppeana
                                            Vernonia durangensis
                                            Vernonia fasciculata
                                              Vernonia fasciculata ssp. corymbosa
                                              Vernonia fasciculata ssp. fasciculata
                                              Vernonia fasciculata var. corymbosa
                                            Vernonia ferruginea
                                            Vernonia flaccidifolia
                                            Vernonia foliosa
                                            Vernonia galamensis
                                            Vernonia gigantea
                                              Vernonia gigantea ssp. gigantea
                                                     [Vernonia altissima var. lilacina]
                                                     [Vernonia altissima var. taeniotricha]
                                                     [Vernonia altissima]
                                              Vernonia gigantea ssp. ovalifolia
                                            Vernonia glauca
                                            Vernonia greggii
                                            Vernonia incana
                                            Vernonia interior
                                            Vernonia jamesii
                                            Vernonia jonesii
                                            Vernonia joyaliae
                                            Vernonia kuntzei
                                            Vernonia larseniae
                                            Vernonia larsenii
                                            Vernonia leiocarpa
                                            Vernonia lettermannii
                                            Vernonia lindheimeri
                                              Vernonia lindheimeri var. leucophylla
                                            Vernonia marginata
                                                   [Vernonia marginata var. tenuifolia]
                                            Vernonia missurica
                                                   [Vernonia aborigina]
                                            Vernonia noveboracensis
                                                   [Vernonia harperi]
                                              Vernonia noveboracensis var. tomentosa
                                            Vernonia oaxacana
                                            Vernonia odoratissima
                                            Vernonia ovalifolia
                                            Vernonia pallens
                                            Vernonia palmeri
                                            Vernonia paniculata
                                            Vernonia patens
                                            Vernonia pauciflora
                                            Vernonia pinguis
                                            Vernonia pinifolia
                                            Vernonia pluvialis
                                            Vernonia pooleae
                                            Vernonia proctori
                                            Vernonia pugana
                                            Vernonia pulchella
                                            Vernonia recurva
                                            Vernonia salicifolia
                                            Vernonia saltensis
                                            Vernonia salvinae
                                            Vernonia scaberrima
                                            Vernonia scorpioides
                                            Vernonia sericea
                                            Vernonia serratuloides
                                              Vernonia serratuloides ssp. serratuloides
                                            Vernonia squamulosa
                                            Vernonia tarchonanthifolia
                                            Vernonia taylorae
                                            Vernonia tequilana
                                            Vernonia texana
                                            Vernonia tortuosa
                                            Vernonia triflosculosa
                                              Vernonia triflosculosa var. palmeri
                                            Vernonia uniflora
                                            Vernonia vernonioides
                                            Vernonia x concinna
                                            Vernonia x dissimilis
                                            Vernonia x georgiana
                                            Vernonia x guadalupensis
                                            Vernonia x illinoensis
                                            Vernonia x peralta
                                            Vernonia x vulturina
                                    Vesicarpa
                                            Vesicarpa potentilloides
                                              Vesicarpa potentilloides var. nitrophilum
                                              Vesicarpa potentilloides var. potentilloides
                                    Vigethia
                                            Vigethia mexicana
                                    Viguiera
                                            Viguiera adenophylla
                                            Viguiera angustifolia
                                            Viguiera bombycina
                                            Viguiera brevifolia
                                            Viguiera buddleiaeformis
                                            Viguiera canescens
                                            Viguiera carterae
                                            Viguiera chenopodina
                                            Viguiera cordata
                                            Viguiera cordifolia
                                            Viguiera decurrens
                                            Viguiera deltoidea
                                                   [Viguiera deltoidea var. genuina]
                                              Viguiera deltoidea var. chenopodina
                                              Viguiera deltoidea var. tastensis
                                              Viguiera deltoidea var. townsendii
                                            Viguiera dentata
                                                   [Helianthus dentatus]
                                              Viguiera dentata var. dentata
                                              Viguiera dentata var. lancifolia
                                            Viguiera ensifolia
                                            Viguiera eriophora
                                            Viguiera excelsa
                                            Viguiera flava
                                              Viguiera flava var. papposa
                                            Viguiera gentryi
                                            Viguiera goldmanii
                                            Viguiera grahamii
                                            Viguiera grammatoglossa
                                            Viguiera greggii
                                            Viguiera helianthoides
                                            Viguiera hypochlora
                                            Viguiera insignis
                                            Viguiera laciniata
                                            Viguiera lanata
                                            Viguiera latibracteata
                                            Viguiera linearis
                                            Viguiera ludens
                                            Viguiera microcephala
                                            Viguiera microphylla
                                            Viguiera montana
                                            Viguiera morelensis
                                            Viguiera palmeri
                                            Viguiera parkinsonii
                                            Viguiera pazensis
                                            Viguiera phenax
                                            Viguiera pinnatilobata
                                            Viguiera porteri
                                            Viguiera pringlei
                                            Viguiera purisimae
                                            Viguiera puruana
                                            Viguiera quinqueradiata
                                            Viguiera reticulata
                                            Viguiera revoluta
                                            Viguiera seemannii
                                            Viguiera similis
                                            Viguiera soliceps
                                            Viguiera stenoloba
                                              Viguiera stenoloba var. chihuahuensis
                                              Viguiera stenoloba var. stenoloba
                                            Viguiera subincisa
                                            Viguiera superaxillaris
                                            Viguiera tenuis
                                            Viguiera tomentosa
                                            Viguiera triangularis
                                    Villasenoria
                                            Villasenoria orcuttii
                                    Vilobia
                                    Virgulaster
                                            Virgulaster bernardinus
                                    Virgulus
                                            Virgulus adnatus
                                            Virgulus campestris
                                            Virgulus carolinianus
                                            Virgulus concolor
                                            Virgulus georgianus
                                                   [Virgulus patens var. georgianus]
                                            Virgulus grandiflorus
                                            Virgulus pratensis
                                            Virgulus walteri
                                            Virgulus x amethystinus
                                            Virgulus yukonensis
                                    Vittadinia
                                            Vittadinia remyi
                                    Volutaria
                                            Volutaria muricata
                                    Wamalchitamia
                                    Weberaster
                                            Weberaster modestus
                                    Weberbaueriella
                                    Wedelia
                                            Wedelia acapulcensis
                                              Wedelia acapulcensis var. hispida
                                            Wedelia biflora
                                            Wedelia calycina
                                              Wedelia calycina var. parviflora
                                            Wedelia chihuahuana
                                            Wedelia fruticosa
                                            Wedelia gentryi
                                            Wedelia glauca
                                            Wedelia gracilis
                                            Wedelia greenmanii
                                            Wedelia hispida
                                            Wedelia incarnata
                                              Wedelia incarnata ssp. anodonta
                                              Wedelia incarnata ssp. villosa
                                            Wedelia lanceolata
                                            Wedelia latifolia
                                            Wedelia mexicana
                                            Wedelia parviflora
                                            Wedelia pimana
                                            Wedelia purpurea
                                            Wedelia reticulata
                                            Wedelia rosei
                                            Wedelia scabra
                                            Wedelia serrata
                                                   [Calydermos spilanthoides]
                                            Wedelia strigosa
                                            Wedelia talpana
                                            Wedelia texana
                                            Wedelia trilobata
                                    Werneria
                                            Werneria poposa
                                    Westoniella
                                    Whitneya
                                            Whitneya dealbata
                                    Wilkesia
                                            Wilkesia grayana
                                            Wilkesia gymnoxiphium
                                            Wilkesia hobdyi
                                    Willoughbya
                                            Willoughbya halei
                                    Wollastonia
                                            Wollastonia biflora
                                    Wootonella
                                    Wootonia
                                            Wootonia parviflora
                                    Wulffia
                                    Wyethia
                                            Wyethia amplexicaulis
                                                   [Espeletia amplexicaulis]
                                            Wyethia angustifolia
                                              Wyethia angustifolia var. foliosa
                                              Wyethia angustifolia var. solanensis
                                            Wyethia arizonica
                                            Wyethia bolanderi
                                            Wyethia coriacea
                                            Wyethia elata
                                            Wyethia glabra
                                            Wyethia helenioides
                                            Wyethia helianthoides
                                            Wyethia invenusta
                                            Wyethia longicaulis
                                            Wyethia magna
                                            Wyethia mexicana
                                            Wyethia mollis
                                            Wyethia reticulata
                                            Wyethia x cusickii
                                            Wyethia x magna
                                    Xanthisma
                                            Xanthisma blephariphyllum
                                            Xanthisma coloradoense
                                            Xanthisma gracile
                                              Xanthisma gracile var. gracile
                                            Xanthisma gracilis
                                                   [Dieteria gracilis]
                                                   [Haplopappus gracilis]
                                                   [Haplopappus ravenii]
                                                   [Machaeranthera gracilis]
                                                   [Sideranthus gracilis]
                                            Xanthisma grindelioides
                                                   [Eriocarpum grindelioides]
                                                   [Haplopappus nuttallii]
                                                   [Machaeranthera grindelioides]
                                              Xanthisma grindelioides var. depressum
                                                     [Haplopappus nuttallii var. depressus]
                                                     [Machaeranthera grindelioides var. depressa]
                                              Xanthisma grindelioides var. grindelioides
                                                     [Machaeranthera grindelioides var. grindelioides]
                                                     [Sideranthus grindelioides]
                                              Xanthisma grindelioides var. grindeloides
                                            Xanthisma gypsophilum
                                            Xanthisma junceum
                                            Xanthisma spinulosum
                                                   [Amellus spinulosus]
                                                   [Aster pinnatifidus]
                                                   [Dieteria spinulosa]
                                                   [Diplopappus pinnatifidus]
                                                   [Eriocarpum australe]
                                                   [Eriocarpum spinulosum]
                                                   [Eriocarpum wootonii]
                                                   [Haplopappus coulteri]
                                                   [Haplopappus spinulosus ssp. australis]
                                                   [Haplopappus spinulosus ssp. cotulus]
                                                   [Haplopappus spinulosus ssp. glaberrimus]
                                                   [Haplopappus spinulosus ssp. incisifolius]
                                                   [Haplopappus spinulosus ssp. laevis]
                                                   [Haplopappus spinulosus var. canescens]
                                                   [Haplopappus spinulosus var. glaber]
                                                   [Haplopappus spinulosus var. glaberrimus]
                                                   [Haplopappus spinulosus var. turbinellus]
                                                   [Haplopappus texensis]
                                                   [Machaeranthera australis]
                                                   [Machaeranthera laevis]
                                                   [Machaeranthera pinnata]
                                                   [Machaeranthera pinnatifida ssp. pinnatifida]
                                                   [Machaeranthera pinnatifida var. incisifolia]
                                                   [Machaeranthera pinnatifida var. pinnatifida]
                                                   [Machaeranthera pinnatifida]
                                                   [Machaeranthera texensis]
                                                   [Sideranthus australis]
                                                   [Sideranthus cotula]
                                                   [Sideranthus glaberrimus]
                                                   [Sideranthus laevis]
                                                   [Sideranthus machaerantherus]
                                                   [Sideranthus puberulus]
                                                   [Sideranthus spinulosus var. glaberrimus]
                                                   [Sideranthus spinulosus]
                                                   [Sideranthus turbinellus]
                                                   [Sideranthus wootonii]
                                                   [Starkea pinnata]
                                              Xanthisma spinulosum var. chihuahuanum
                                                     [Haplopappus spinulosus var. chihuahuanus]
                                                     [Machaeranthera pinnatifida var. chihuahuana]
                                              Xanthisma spinulosum var. glaberrimum
                                              Xanthisma spinulosum var. gooddingii
                                                     [Haplopappus gooddingii]
                                                     [Haplopappus spinulosus var. gooddingii]
                                                     [Machaeranthera pinnatifida ssp. gooddingii]
                                                     [Machaeranthera pinnatifida var. gooddingii]
                                                     [Sideranthus gooddingii]
                                              Xanthisma spinulosum var. goodingii
                                              Xanthisma spinulosum var. paradoxum
                                                     [Haplopappus spinulosus var. paradoxa]
                                                     [Machaeranthera pinnatifida var. paradoxa]
                                              Xanthisma spinulosum var. scabrellum
                                              Xanthisma spinulosum var. spinulosum
                                            Xanthisma texanum
                                              Xanthisma texanum ssp. texanum
                                              Xanthisma texanum var. drummondii
                                                     [Xanthisma texanum ssp. drummondii]
                                              Xanthisma texanum var. orientale
                                              Xanthisma texanum var. texanum
                                            Xanthisma viscidum
                                    Xanthium
                                            Xanthium ambrosioides
                                            Xanthium macrocarpum
                                            Xanthium silphifolium
                                            Xanthium spinosum
                                                   [Acanthoxanthium spinosum]
                                                   [Xanthium spinosum var. inerme]
                                            Xanthium strumarium
                                                   [Xanthium acerosum]
                                                   [Xanthium californicum var. rotundifolium]
                                                   [Xanthium californicum]
                                                   [Xanthium campestre]
                                                   [Xanthium canadense]
                                                   [Xanthium cavanillesii]
                                                   [Xanthium cenchroides]
                                                   [Xanthium commune]
                                                   [Xanthium echinatum]
                                                   [Xanthium glanduliferum]
                                                   [Xanthium italicum]
                                                   [Xanthium macounii]
                                                   [Xanthium oligacanthum]
                                                   [Xanthium oviforme]
                                                   [Xanthium pensylvanicum]
                                                   [Xanthium saccharatum]
                                                   [Xanthium speciosum]
                                                   [Xanthium strumarium ssp. italicum]
                                                   [Xanthium strumarium var. canadense]
                                                   [Xanthium strumarium var. oviforme]
                                                   [Xanthium strumarium var. pensylvanicum]
                                                   [Xanthium varians]
                                              Xanthium strumarium var. glabratum
                                                     [Xanthium americanum]
                                                     [Xanthium calvum]
                                                     [Xanthium chasei]
                                                     [Xanthium chinense]
                                                     [Xanthium curvescens]
                                                     [Xanthium cylindraceum]
                                                     [Xanthium echinellum]
                                                     [Xanthium globosum]
                                                     [Xanthium inflexum]
                                                     [Xanthium macrocarpum var. glabratum]
                                                     [Xanthium occidentale]
                                                     [Xanthium orientale]
                                                     [Xanthium strumarium var. wootonii]
                                                     [Xanthium wootonii]
                                              Xanthium strumarium var. strumarium
                                    Xanthocephalum
                                            Xanthocephalum amoenum
                                              Xanthocephalum amoenum var. intermedium
                                            Xanthocephalum benthamianum
                                            Xanthocephalum centauroides
                                            Xanthocephalum durangense
                                            Xanthocephalum eradiatum
                                            Xanthocephalum gymnospermoides
                                                   [Grindelia gymnospermoides]
                                                   [Gutierrezia gymnospermoides]
                                              Xanthocephalum gymnospermoides var. eradiatum
                                              Xanthocephalum gymnospermoides var. intermedium
                                            Xanthocephalum megalocephalum
                                            Xanthocephalum petradoria
                                            Xanthocephalum texanum
                                    Xeranthemum
                                            Xeranthemum annuum
                                            Xeranthemum squarrosum
                                    Xerochrysum
                                            Xerochrysum bracteatum
                                    Ximenesia
                                    Xiphochaeta
                                    Xylorhiza
                                            Xylorhiza brandegei
                                            Xylorhiza cognata
                                            Xylorhiza coloradoensis
                                            Xylorhiza confertifolia
                                            Xylorhiza cronquistii
                                            Xylorhiza frutescens
                                            Xylorhiza glabriuscula
                                              Xylorhiza glabriuscula var. glabriuscula
                                              Xylorhiza glabriuscula var. linearifolia
                                              Xylorhiza glabriuscula var. villosa
                                            Xylorhiza linearifolia
                                            Xylorhiza orcuttii
                                                   [Aster orcuttii]
                                                   [Machaeranthera orcuttii]
                                            Xylorhiza standleyi
                                            Xylorhiza tortifolia
                                                   [Machaeranthera tortifolia]
                                              Xylorhiza tortifolia var. imberbis
                                                     [Machaeranthera tortifolia var. imberbis]
                                              Xylorhiza tortifolia var. tortifolia
                                                     [Aplopappus tortifolius]
                                                     [Aster abatus]
                                                     [Aster goodingii]
                                                     [Aster mohavensis]
                                                     [Aster tortifolius]
                                                     [Xylorhiza lanceolata]
                                                     [Xylorhiza scopulorum]
                                            Xylorhiza venusta
                                                   [Aster venustus]
                                                   [Machaeranthera venusta]
                                            Xylorhiza villosa
                                            Xylorhiza wrightii
                                                   [Aster wrightii]
                                                   [Machaeranthera wrightii]
                                                   [Townsendia wrightii]
                                    Xylothamia
                                            Xylothamia diffusa
                                                   [Ericameria diffusa]
                                                   [Haplopappus sonoriensis]
                                            Xylothamia palmeri
                                              Xylothamia palmeri var. pachylepis
                                            Xylothamia pseudobaccharis
                                            Xylothamia triantha
                                                   [Ericameria triantha]
                                                   [Haplopappus trianthus]
                                    Yermo
                                            Yermo xanthocephalus
                                    Youngia
                                            Youngia japonica
                                                   [Crepis japonica]
                                                   [Youngia japonica ssp. elstonii]
                                                   [Youngia thunbergiana]
                                    Zacintha
                                    Zaluzania
                                            Zaluzania augusta
                                            Zaluzania discoidea
                                            Zaluzania globosa
                                            Zaluzania grayana
                                                   [Viguiera triloba]
                                            Zaluzania megacephala
                                            Zaluzania montagnifolia
                                            Zaluzania parthenioides
                                            Zaluzania subcordata
                                            Zaluzania triloba
                                    Zexmenia
                                            Zexmenia crocea
                                            Zexmenia ghiesbrechtii
                                            Zexmenia gradata
                                            Zexmenia hispida
                                            Zexmenia lantanifolia
                                            Zexmenia pringlei
                                            Zexmenia seemannii
                                            Zexmenia serrata
                                    Zinnia
                                            Zinnia acerosa
                                                   [Zinnia pumila]
                                            Zinnia americana
                                            Zinnia angustifolia
                                              Zinnia angustifolia var. angustifolia
                                            Zinnia anomala
                                            Zinnia bicolor
                                            Zinnia flavicoma
                                            Zinnia grandiflora
                                                   [Crassina grandiflora]
                                            Zinnia greggii
                                            Zinnia haageana
                                            Zinnia juniperifolia
                                            Zinnia leucoglossa
                                            Zinnia linearis
                                            Zinnia maritima
                                              Zinnia maritima var. palmeri
                                            Zinnia palmeri
                                            Zinnia peruviana
                                                   [Crassina multiflora]
                                                   [Zinnia multiflora]
                                                   [Zinnia pauciflora]
                                            Zinnia purpusii
                                            Zinnia tenella
                                            Zinnia tenuis
                                            Zinnia violacea
                                                   [Crassina elegans]
                                                   [Zinnia elegans]
                                            Zinnia zinnioides
                                    Zollikoferia
                                    Zyzyxia
                                    x Argyrautia
                                            x Argyrautia degeneri
                                    x Solidaster
                                            x Solidaster luteus

Problematic Rooting (14444)
                                              Achillea lanulosa subsp. lanulosa

Problematic Rooting (151465)
                                              Actinella richardsonii var. canescens

Problematic Rooting (15287)
                                              Haplopappus armerioides var. armerioides

Problematic Rooting (15292)
                                              Haplopappus nuttallii var. nuttallii

Problematic Rooting (15909)
                                              Riddellia tagetina var. pumila

Problematic Rooting (16194)
                                              Viguiera multiflora var. multiflora

Problematic Rooting (16215)
                                              Xanthium commune var. wootoni

Problematic Rooting (31726)
                                              Chrysothamnus nauseosus var. linearifolius
                                              Chrysothamnus nauseosus var. macrophyllus

Problematic Rooting (31740)
                                              Senecio douglasii var. normalis
                                              Senecio douglasii var. sublanceolatus

Problematic Rooting (44008)
                                              Hemizonia fasciculata ssp. ramosissima

Problematic Rooting (44009)
                                              Hemizonia paniculata ssp. cruzensis
                                              Hemizonia paniculata ssp. foliosa
                                              Hemizonia paniculata ssp. increscens

Problematic Rooting (62598)
                                              Aster occidentalis var. scabriusculus

Problematic Rooting (62976)
                                              Brachyactis ciliata var. carnosula

Problematic Rooting (64957)
                                              Haplopappus arborescens ssp. peninsularis

Problematic Rooting (64986)
                                              Haplopappus venetus ssp. tridentatus

Problematic Rooting (68357)
                                              Senecio streptanthifolius var. streptanthifolius

Problematic Rooting (6987)
                                              Artemisia dracunculoides var. wolfii

Problematic Rooting (7351)
                                              Townsendia sericea var. papposa

Problematic Rooting (9126)
                                              Aster adscendens var. parryi

Problematic Rooting (9246)
                                              Bidens odorata var. odorata