Distribution: Known only from Whatcom County in Washington; southern British Columbia to Washington, east across the Rocky Mountains and Great Plains to the Atlantic Coast.
Habitat: Swamps and other moist, open places, from sea level to middle elevations.
Conservation Status: Historical in Washington (WANHP)
Stout, fibrous-rooted perennial, 6-20 dm. tall.
: Leaves whorled, mostly in 3u00e2u20acu2122s or 4u00e2u20acu2122s, lance-elliptic to lance-ovate, narrowed to the petiole, 6-20 cm. long and 2-7 cm. wide, sharply serrate, densely covered beneath with short, spreading, curly hairs.
Heads clustered in a rather flat-topped inflorescence; involucre 6.5-9 mm. high, often purplish; flowers purple, all with tubular corollas, 9-22 in each head; pappus of numerous capillary bristles.
Achenes 5-angled, glandular.