Distribution: Eastern British Columbia, eastern Washington and northeast Oregon, east to Maine and Georgia.
Habitat: Open places in the plains and valleys to moderate elevations in the mountains.
Flowers: July - September
Conservation Status: Not of concern
Fibrous-rooted perennials with a short rhizome or crown, the stems 4-12 dm. tall, the herbage glabrous and somewhat glaucous.
Leaves thick, entire or toothed, highly variable in size and shape, lanceolate or broader, the lower petioled, the other sessile and sometimes clasping.
Inflorescence open and flat-topped, its bracts broad-based and sub-clasping; involucre 5-7 mm. high, its bracts firm, imbricate, sharply pointed, with a narrow, elongate green tip; rays 15-30, blue or purple, 6-9 mm. long; disk flowers yellow; pappus of reddish capillary bristles.