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Physaria parvula
(Greene) O'Kane & Al-Shehbaz
Family:
Brassicaceae
Images
not available
Flora of North America
Resources
Steve L. O´Kane Jr. in Flora of North America (vol. 7)
Perennials;
caudex (buried), usually branched, sometimes simple, (cespitose); densely pubescent, trichomes (appressed), 4-7-rayed, rays distinct, furcate or bifurcate near base.
Stems
few to several from base, erect, (unbranched, slender), 0.3-1.5 (-3) dm.
Basal leaves
(tufted, erect); blade linear to very narrowly spatulate, 1-3(-4) cm, margins entire (involute).
Cauline leaves
similar to basal.
Racemes
relatively dense.
Fruiting pedicels
(ascending, curved or sigmoid), 2-10 mm.
Flowers:
sepals (greenish yellow), elliptic, 3.5-7 mm; petals spatulate, 5-6 mm, (not clawed).
Fruits
(erect), ovoid (or longer than broad), usually inflated, 4-5 mm, (apex acute, slightly flattened); valves pubescent, trichomes appressed; ovules 4-8 per ovary; style 2-4 mm.
Seeds
flattened, (mucilaginous).
2
n
= 10, 20. Flowering May-Jul. Exposed windblown ridges, gravelly hills, open rocky knolls, gravelly hilltops, clay hillsides, granitic sand, reddish soil, sagebrush, mountain scrub, and pinyon-juniper areas; 1800-2800 m; Colo., Utah, Wyo.
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