Distribution: Occurring east of the Cascades crest in Washington; central Washington to California, east to Montana and Utah.
Habitat: Sagebrush deserts to ponderosa pine forest opening and edges.
Conservation Status: Not of concern
Glabrous, glaucous, herbaceous perennial from a fleshy root, the several decumbent stems 2-5 dm. tall.
Leaves alternate, large, leathery, ternate, with the leaflets deeply ternately parted, and the segments once- or twice-dissected into oblong segments 3-10 mm. broad.
Flowers solitary on short, terminal peduncles; sepals 5, unequal, leathery, greenish to purplish, oval, 1-2 cm. long; petals 5, brownish-reddish-purple, oval, about equaling the sepals, deciduous; a prominent, lobed, yellowish disk covering the ovary supports numerous, yellow stamens; carpels distinct, 5.
Follicles 5, leathery, 4-5 cm. long, divergent.