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FNA | Family List | FNA Vol. 7 | Brassicaceae | Physaria

31. Physaria fremontii (Rollins & E. A. Shaw) O’Kane & Al-Shehbaz, Novon. 12: 323. 2002.

Fremont’s bladderpod Fremont’s bladderpod

Lesquerella fremontii Rollins & E. A. Shaw, Gen. Lesquerella, 228. 1973

Perennials; caudex simple; densely pubescent, trichomes (subsessile), 5-7-rayed, rays distinct or slightly fused at base, usually furcate, (roughly tuberculate). Stems few to several from base, prostrate, (arising proximal to a terminal cluster of erect leaves, usually unbranched, slender), 0.5-1(-1.5) dm. Basal leaves: (petiole slender); blade elliptic to rhombic, 1.5-4(-5) cm, (base gradually tapering to petiole), margins usually entire, rarely dentate. Cauline leaves: blade narrowly obovate to oblanceolate, 5-15 mm, margins entire. Racemes (relatively short), rather loose. Fruiting pedicels (usually secund, recurved), 5-8 mm. Flowers: sepals ± elliptic, 4-6 mm; petals ovate, 6-8 mm, (claw slightly expanded at base). Fruits (pendent), globose, subglobose, or slightly obcompressed, slightly or not inflated, 3-6 mm, (rigid, apex usually beaked); valves pubescent throughout; ovules 8-12 per ovary; style 1-2 mm, (pubescent). Seeds slightly flattened, (suborbicular).

Flowering May-Jun. Calcareous gravel, loose whitish rubble, limestone pavement, rocky calcareous ridges; of conservation concern; 2100-2800 m; Wyo.

Physaria fremontii is known from the area of the Wind River Mountains.


 

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