Distribution: Occurring on both sides of the Cascades crest in Washington; southwestern British Columbia to California, disjunct in west-central Idaho.

Habitat: Open areas from the valleys and foothills to middle elevations in the mountains

Flowers: April-June

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern

Pollination: Bees, flies, butterflies, beetles, wasps

Robust perennial from a very large, woody taproot, the several ascending, glabrous stems 5-15 dm. tall.

Both basal and cauline leaves large and somewhat roughened, ternate-pinnately dissected into small, narrow ultimate segments up to 1 cm. long.

Inflorescence a compound umbel, the rays 10-30, usually about equal, 4-10 cm. long at maturity; involucre none; involucel of well-developed narrow bractlets; calyx teeth obsolete; flowers brownish-purple or yellow (the two color forms rarely found together), some of them always sterile.

Fruit elliptic, 8-17 mm. long and 4.5-10 mm. wide, the lateral wings narrow and thickened, up to 1 mm. wide, the dorsal ribs inconspicuous.