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General:
Perennial herb from a taproot; stems erect, branched, glabrous or somewhat sparsely long-hairy, 0.4-1.0 m tall.
Leaves:
Basal leaves oblanceolate to elliptic, base tapering into the stalk, deeply to shallowly lobed or irregularly pinnately cut, glabrous or often lightly hairy below, up to 15 cm long and 3 cm wide; stem leaves lanceolate, unstalked, reduced upwards.
Flowers:
Heads discoid, numerous, solitary at the ends of ascending branches; disk flowers reddish-purple, the marginal ones, if present, enlarged, lobed and conspicuous; involucres 12-15 mm tall, 8-11 mm wide; involucral bracts cylindric, taller than wide, with slightly enlarged, rounded, tattered to comb-like, darker appendages at the tips, these wider than the bracts.
Fruits:
Achenes grey or light brown, 3.2-3.5 mm long; pappus reduced to small scales or lacking.
Source: The Illustrated Flora of British Columbia
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