Distribution: In eastern portion of Washington; south to California, east to Idaho and Nevada.
Habitat: Stream banks in mixed conifer forests, road cuts, and rocky, serpentine soils.
Conservation Status: Not of concern
Nearly glabrous perennials with slender taproots, the stems 1-3, sparingly branched.
Leaves alternate, silvery, with winged petioles, basal and cauline, the blades elliptic or oblanceolate, 7-28 cm. long and 0.5-7 cm. wide, the margins pinnately lobed to dentate.
Heads 7-10 in a flat-topped inflorescence; involucres nearly cylindrical, 8-16 mm. long and 3-5 mm. wide; involucre bracts keeled, with white margins, usually 5, lanceolate, 10-16 mm. long, with 5-6 deltate bractlets 1.5-4 mm. long; flowers 5-10, the corollas yellow, strap-shaped, 15-20 mm. long; pappus yellowish-white, the bristles unequal, 6-12 mm. long.
Achene deep reddish-brown, sub-cylindric, 5-8 mm. long, with 10 prominent ribs.