Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, east across most of North America to the Atlantic Coast.
Habitat: Beach strand, grassy balds, grasslands, and other open areas at low elevations.
Growth Duration: Annual
Conservation Status: Not of concern
Sparsely to densely pubescent annual or biennial, the freely-branched stem 1.5-6 dm. tall.
Basal leaves from toothed to nearly pinnate, oblanceolate, 5-15 cm. long and 1-5 cm. broad; cauline leaves gradually reduced upward and often entire.
Inflorescence of numerous, elongate, many-flowered racemes; pedicles slender, terete, longer than the fruits; sepals 4; petals 4, white, 1-3 mm. long; stamens 2; style lacking.
Silicles elliptic-rotund to nearly orbicular, 2.5-4 mm. long, strongly obcompressed, glabrous, shallowly notched.