Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to Oregon.

Habitat: Streambanks and moist rocks, from the coast to above timberline

Flowers: June-August

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern

Pollination: Flies

Slender perennial from well-developed rhizomes, the 1-several stems 2.5-6 dm. tall, mostly glabrous.

Leaves mostly basal, the blades cordate-ovate, 3-9 cm. broad and shorter than wide, glabrous on the upper surface, 5-lobed nearly half way to the base, the lobes unevenly toothed; cauline leaves 1-2, greatly reduced and bract-like.

Inflorescence large, many-flowered and open, the branches and pedicels filiform; calyx obconic, 2-3 mm. long, the 5 lobes ovate-oblong, glandular-pubescent, 2/3 as long as the tubular portion; petals 5, white, 2-4 times as long as the sepals, with slender claws equal to the spatulate, entire blades; stamens 5, exserted.

Ovary mostly inferior; capsule 5-6 mm. long, the 2 carpels with short, slender beaks; seeds narrowly ellipsoid, slightly curved, 3-4 times long as broad, with prominent rows of spines.