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Pennellia longifolia
Pennellia longifolia
(Benth.) Rollins
Family:
Brassicaceae
longleaf mock thelypody,
more...
long-leaf mock thelypody
[
Streptanthus longifolius
Benth.,
more
Thelypodium longifolium
(Benth.) S. Wats.
]
Max Licher
Flora of North America
Resources
Sara Fuentes-Soriano, Ihsan A. Al-Shehbaz in Flora of North America (vol. 7)
Stems
simple or few from base, 4-15 dm, pubescent proximally, trichomes simple and long-stalked, 2-rayed, mixed with smaller, dendritic ones.
Basal leaves
caducous; petiole to 3 cm; blade spatulate to oblanceolate, 1.8-3 cm × 2-4 mm, margins dentate, sinuate, incised, or runcinate, surfaces pubescent, trichomes stalked, forked and dendritic, mixed with fewer, simple ones.
Cauline leaves
(distal) sessile; blade linear, 3-9.2 cm × 0.8-5 mm, surfaces glabrous or glabrate.
Racemes
secund, 1.6-7.9 dm in fruit.
Fruiting pedicels
slightly descending, recurved, 5-13 mm.
Flowers
(slightly zygomorphic, receptacle asymmetric); sepals purple or green, oblong, 4-9 × 1.5-4 mm, (adaxial largest); petals lavender to purple apically, spatulate, (4-)5-7(-12) × 1-3 mm, (adaxial largest); filaments 4-9 mm; anthers 1-1.2(-2) mm.
Fruits
pendent, straight or nearly so, 5-10 cm × 1-1.2 mm, slightly latiseptate; valves glabrous; septum transparent; ovules 150-250 per ovary; style 0.5-1.2 mm.
Seeds
biseriate, plump, not winged, oblong, 0.7-1.3 × 0.4-0.5 mm; seed coat mucilaginous when wetted; cotyledons incumbent.
2
n
= 16. Flowering Jul-Oct. Mixed pine-oak forest, limestone hills, rocky outcrops and meadows, stream banks, shaded ravines; 1400-3400 m; Ariz., N.Mex., Tex.; Mexico; Central America (Costa Rica, Guatemala).
Open Interactive Map
Max Licher
Max Licher
Patrick Alexander
Patrick Alexander
Patrick Alexander
Patrick Alexander
Jillian Cowles
Liz Makings
Jillian Cowles
Kirstin Olmon
Jillian Cowles
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