Distribution: Alaska to Washington, east to Montana
Habitat: Uncommon in moist woods and on stream banks, moderate elevations in the mountains
Flowers: July - August
Conservation Status: Not of concern
Glabrous perennial with fibrous roots, 3-8 dm. tall.
Thin, the basal one elliptic or broadly ovate, usually tapering at the base, petiolate, serrate or sometimes incised; cauline leaves sharply incised-pinnatifid, the lobes irregularly again few toothed, reduced and becoming sessile upward.
Heads 6-40, yellow, discoid or rarely with short rays; involucre 7-10 mm. high, its bracts often with purple tips.
The thin, serrate basal leaves and ray-less yellow flowers should distinguish this species.