Distribution: Occurring west of the Cascades crest and east in the Columbia River Gorge in Washington; British Columbia to California.
Habitat: Meadows, balds, prairies, and open woods from the coast to low elevations in the mountains.
Growth Duration: Perennial
Conservation Status: Not of concern
Pollination: Bees, flies, moths
Taprooted perennial, the solitary, erect stem 2.5-12 dm. tall.
Basal and lower cauline leaved long-petiolate, the blade 3- to 5-lobed or cleft, 3-13 cm. long and 2-18 cm. broad, the primary segments broad and toothed; middle and upper cauline leaves few and reduced, becoming sessile.
Primary umbels few-rayed and irregular, ultimate umbels small and head-like; involucre of small, leafy bracts, involucel of about 5 bractlets 1-2 mm. long; calyx lobes soft, lanceolate, less than 1 mm. long; flowers yellow.
Fruit sub-globose, 2-5 mm. long and 2-4 mm. wide, covered with stout, recurved prickles.