Distribution: Occurring east of the Cascades crest in Washington; Washington to California, east to the Rocky Mountains, also along the coast in northeastern U.S.

Habitat: Fields, roadsides, and other disturbed areas.

Flowers: May-June

Origin: Introduced from Eurasia

Growth Duration: Annual, Biennial

Conservation Status: Not of concern

Pollination: Bees, flies, butterflies

Freely-branched annual, strongly pubescent with forked hairs, the stem 1-4 dm. tall.

Leaves all cauline, alternate, short-petiolate, oblong-oblanceolate, 2-5 cm. long, remotely dentate.

Flowers sub-sessile in open, spike-like racemes; pedicles stout, 1 mm. long; sepals 4, not saccate; petals 4, white, spatulate, 1 mm. long, rounded or very shallowly notched; stamens 6; style stout, beaklike, nearly as long as the silicle.

Silicles obovoid, 2-3 mm. long, covered with pungent hairs.