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Varilla
Varilla
Family:
Asteraceae
Flora of North America
Resources
John L. Strother in Flora of North America (vol. 21)
Subshrubs
[shrubs], (10-)20-30+ cm (± succulent, sometimes rhizomatous).
Stems
erect.
Leaves
cauline; mostly alternate [opposite]; ± sessile; blades linear to filiform (± terete) [lance-linear], margins entire, faces glabrous (not gland-dotted).
Heads
discoid, borne singly [in corymbiform arrays].
Involucres
obconic, [3-]5-8 mm diam.
Phyllaries
persistent, [30-]45-60 in [2-]4-5 series ± appressed, lance-linear to subulate, unequal, resinous-nerved).
Receptacles
conic, paleate; paleae falling, linear, scarious, flat or weakly conduplicate, resinous-veined.
Ray florets
0.
Disc florets
60-150+, bisexual, fertile; corollas greenish yellow, tubes shorter than or about equaling campanulate to cylindric throats, lobes 5, narrowly deltate.
Cypselae
columnar to clavate, ribs 8-15, faces glabrous;
pappi
0 [bristles].
x
= 18.
Species within checklist:
ASU Types
Varilla mexicana
Images
not available