Distribution: Occurring on both sides of the Cascades crest in Washington; Yukon Territory to northern California, east to Montana and Colorado.

Habitat: Shady woodlands and forests, from low elevations to mid-elevations in the mountains.

Flowers: May-August

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern

Pollination: Wind

Dioecious, glabrous to glandular-puberulent perennial, the stems 4-10 dm. tall.

Leaves mostly cauline, 3-4 times ternate, the leaflets obovate, 1.5-3 cm. long, rounded at the base, 3-lobed, the lobes entire or shallowly 2- or 3-toothed.

Inflorescence an open, leafy-bracteate panicle; sepals 4-5, 2-3 mm. long, greenish-white to purplish; petals none; stamens 15-30, the filaments filiform, 4-8 mm. long, purplish; ovaries glandular-puberulent; stigmas purplish, 3-4.5 mm. long; ovary superior.

Achenes 4-9, spreading, 5-8 mm. long, with 3 prominent nerves on each side.