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
Growth Duration: Perennial
Conservation Status: Not of concern
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.