Distribution: Occurring west of the Cascades crest in the San Juan Islands; disjunct in southern Vancouver Island and adjacent San Juan Islands, otherwise occurring in central California.
Habitat: Vernal pools and saline soils.
Flowers: March-May
Origin: Native
Growth Duration: Annual
Conservation Status: Endangered in Washington (WANHP)
Pollination: Bumblebees, bees, flies, beetles, wasps
Slender, puberulent annual, the erect or spreading stems 0.5-2 dm. tall.
Basal leaves 2-6 cm. long, pinnatifid into linear segments; cauline leaves alternate, mostly linear, entire, not auriculate.
Inflorescence of open, bractless, elongate racemes; pedicles distinctly flattened, spreading, often S-shaped, slightly longer than the fruits; sepals 4, 0.5 mm. long; petals 4, white, up to 0.5 mm. long, often wanting; stamens 4; style lacking.
Silicles ovate, 2.5-3.5 mm. long and 2-2.5 mm. broad, strongly obcompressed, glabrous, finely net-veined, deeply lobed, the 2 lobes nearly 1 mm. long.
Publication: Fl. N. Amer. 1: 116. 1838.
PNW Herbaria: Specimen records of Lepidium oxycarpum in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Lepidium oxycarpum checklist entry
OregonFlora: Lepidium oxycarpum information
E-Flora BC: Lepidium oxycarpum atlas page
CalPhotos: Lepidium oxycarpum photos
