Distribution: At the east end of the Columbia River Gorge in Washington; Washington south to northern Oregon.
Habitat: Deeper soil in shrub-steppe.
Conservation Status: Not of concern
Stout, aromatic, glabrous and glaucous perennial from a very thick, woody taproot and crown, 3-6 dm. tall, with several stems from the base.
Leaves light green, mostly basal, ternate-pinnately dissected into numerous linear ultimate segments up to 2 cm. long and 1 mm. wide; bladeless basal sheathes well developed and conspicuous.
Inflorescence a compound umbel, the rays 7-14, nearly equal, 4-20 cm. long; involucre wanting; involucel of well-developed, narrow bractlets; pedicels 10-30 mm. long at maturity; calyx teeth obsolete, flowers pinkish purple.
Fruit elliptic to oblong-ovate, 16-28 mm. long and 8-15 mm. wide, the lateral wings thickened, up to 1/3 as wide as the body.