Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Montana, Wyoming, and Colorado

Habitat: Stream margins, wet meadows, pond shores, and other riparian areas.

Flowers: April-August

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern

Pollination: Bees, flies

Erect to spreading perennial, with slender rhizomes 2 mm. thick, but 4 mm. thick at the base of the stems; flowering stems simple to branched, 2-6 dm. tall, mostly glabrous.

: Leaves glabrous, the few basal ones usually simple, the blade 1-3 cm. long, cordate or ovate; cauline leaves compound with 2-4 lanceolate to ovate lobes, the terminal one dentate-lobed.

Flowers in racemes, the pedicles ascending, 5-20 mm. long; sepals 4, 1.5-2.5 mm. long; petals 4, white, obovate, 3-7 mm. long; style 0.5-2 mm. long.

Siliques erect, 2-3 cm. long, 1-1.5 mm. broad.