Distribution: Widely distributed throughout Washington; common throughout North America.
Habitat: Wet ground and low elevations.
Conservation Status: Not of concern
Annual or biennial herbs, glabrous to stiff-hairy, the stems simple to freely-branched, erect, 3-10 dm. tall.
Leaves alternate, ovate-oblong to oblong-obovate, up to 17 cm. long, all pinnatifid or the upper merely toothed, slightly auriculate.
Inflorescence of bractless racemes; pedicles 4-12 mm. long, equaling the fruits; sepals 4, about 1.5 mm. long, not saccate at the base, falling off shortly after flowering; petals 4, light yellow, about 1 mm. long; stamens 6; style 0.5-1 mm. long.
Siliques ovate to oblong, spreading to ascending, mostly straight, 3-8 mm. long and 2-3 mm. broad; seeds in 2 series.