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

24. Physaria douglasii (S. Watson) O’Kane & Al-Shehbaz, Novon. 12: 322. 2002.

Douglas’s bladderpod

Lesquerella douglasii S. Watson, Proc. Amer. Acad. Arts 23: 255. 1888

Perennials; caudex simple; densely pubescent, trichomes (sessile or nearly so), 4-6(-10)- rayed, rays usually furcate near base, rarely bifurcate, (umbonate, tuberculate throughout). Stems simple from base, erect, (usually unbranched), to 4.5 dm. Basal leaves: blade suborbicular to elliptic, 2-9.5(-11.5) cm, margins entire, sinuate, coarsely dentate, or almost lyrate-pinnatifid. Cauline leaves similar to basal, blade narrowly linear or, sometimes, orbicular. Racemes loose (lax). Fruiting pedicels (recurved, straight, curved, or sigmoid), 6-20 mm. Flowers: sepals elliptic or ovate, (2-)3.5-7.5 mm, (cucullate); petals 6-11 mm. Fruits obovoid to subglobose, not inflated (not angustiseptate), 3-6 mm; valves sparsely pubescent, sometimes glabrous inside, trichomes sessile or stalked; ovules 4 (-8) per ovary; style (1.6-)3-6 mm. Seeds flattened. 2n = 10, 30.

Subspecies 2 (2 in the flora): w North America.

1 Fruit valves: trichomes sessile; cauline leaves loosely arranged, blades narrowly linear; British Columbia, Idaho, Montana, Oregon, Washington.   24a Physaria douglasii subsp. douglasii
+ Fruit valves: trichomes stalked; cauline leaves imbricate, blades sometimes orbicular; White Bluffs adjacent to Columbia River of Washington.   24b Physaria douglasii subsp. tuplashensis

Lower Taxa


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