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

39. Physaria hemiphysaria (Maguire) O’Kane & Al-Shehbaz, Novon. 12: 323. 2002.

Intermountain or skyline bladderpod

Lesquerella hemiphysaria Maguire, Amer. Midl. Naturalist 27: 466. 1942

Perennials; caudex simple or branched (tightly); sparsely to densely pubescent, trichomes (sessile or short-stalked), 4-6- rayed, rays furcate or bifurcate, distinct or slightly fused at base, (sometimes umbonate, tuberculate throughout). Stems few to several from base, decumbent, 0.5-1(-2) dm, (rather stout, sparsely pubescent). Basal leaves: blade elliptic to suborbicular, 1.5-3.5(-5.5) cm, margins entire or shallowly dentate (at base, surfaces densely pubescent, silvery). Cauline leaves (petiolate or distal nearly sessile); blade elliptic to obovate, 0.5-1.5 cm, margins entire. Racemes dense, congested, (few-flowered). Fruiting pedicels (spreading or recurved, sometimes loosely sigmoid), 2-6.5 mm. Flowers: sepals lanceolate, oblanceolate, or narrowly elliptic, 3.8-5 mm, (median pair thickened apically, cucullate); petals narrowly lanceolate to linear, 6-10(-13) mm. Fruits (sessile or substipitate), broadly obcordate, obdeltate, or obcompressed, slightly compressed (angustiseptate), 3-5(-7) mm; valves (not retaining seeds after dehiscence), sparsely pubescent or glabrous, trichomes appressed; replum as wide as or wider than fruit; ovules 8-16 per ovary; style (1.8-)3-6(-7) mm. Seeds slightly flattened, (ellipsoid to suborbicular).

Subspecies 2 (2 in the flora): wc United States

1 Styles 3-5 mm; fruiting pedicels 4-6.5 mm; fruit valves pubescent, often sparsely so.   39a Physaria hemiphysaria subsp. hemiphysaria
+ Styles 1.8-2.5(-3) mm; fruiting pedicels 2-4(-5.5) mm; fruit valves glabrous or sparsely pubescent.   39b Physaria hemiphysaria subsp. lucens

Lower Taxa


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