Distribution: Occurring chiefly east of the Cascades crest in Washington; southern British Columbia to California, east to the Rocky Mountains from Alberta to Utah.
Habitat: Forest openings and edge, thickets, and riparian zones from low to middle elevations.
Growth Duration: Perennial
Conservation Status: Not of concern
Stout, mostly glabrous, aromatic perennial, 4-12 dm. tall, the stems clustered on a stout root that quickly melts away.
Leaves 1-3 ternate-pinnate, the leaflets lanceolate to ovate, serrate, 2-10 cm. long and 0.5-5 cm. wide; basal leaves clustered and long-petiolate, the cauline leaves several and sub-sessile; stems usually branched above.
Inflorescence of several compound umbels, the long peduncles rising from leaf axils as well as terminal; the 5-12 rays 1-4 cm. long, elongating to 8 cm. or more in fruit; involucre and involucel wanting; calyx teeth obsolete, flowers yellow.
Fruit glabrous, linear-oblong, 12-20 mm. long, narrowed above to a short, beak-like tip; stylopodium low-conic.