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Physaria pachyphylla
Family:
Brassicaceae
Thick-Leaf Bladderpod
FNA
Resources
Steve L. O´Kane Jr. in Flora of North America (vol. 7)
Perennials;
caudex usually simple, rarely branched, (loosely mounded, rosette-like growth); densely (silvery or gray) pubescent, trichomes (sessile), 5-rayed, rays bifurcate, slightly fused near base of main rays, (tuberculate throughout, less over umbo).
Stems
several from base, decumbent to prostrate, (well-exserted beyond basal leaves), 0.2-0.5 dm.
Basal leaves:
(petiole differentiated from blade); blade (slightly cupped, leathery, nearly 1 mm thick), oblanceolate to orbicular, 1.2-2 cm, margins entire, (apex acute).
Cauline leaves:
blade spatulate, similar to basal.
Racemes
dense, (subumbellate).
Fruiting pedicels
(ascending, curved), 5-7 mm.
Flowers:
sepals (pale yellow), elliptic to oblong, 3.5-4.0 mm, (median pair somewhat thickened apically, cucullate); petals lingulate, 5-6 mm.
Fruits
globose or ellipsoid, slightly inflated (with slight apical constriction), 3-6 mm; valves pubescent, trichomes closely appressed; ovules 8 per ovary; style 1-3 mm (shorter than mature fruit).
Seeds
plump, (oblong).
Flowering Jun-Jul. Barren areas of mixed white, pink, or reddish limestone and diatomaceous earth; of conservation concern; 1300-1600 m; Mont.
Physaria pachyphylla
is known from the Pryor Mountain Desert near the Wyoming state line.
Open Interactive Map
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13 Total Images
This project was made possible in part by the Institute of Museum and Library Services [MG-70-19-0057-19].
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