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General:
Biennial or perennial herb from a taproot and short woody stem-base; stems erect, several, branched above, 0.3-1.2 m tall, stiffly coarse-hairy.
Leaves:
Basal leaves lacking; stem leaves alternate, pinnately cut, the segments linear or lanceolate and entire, coarsely short stiff-hairy, 10-20 cm long, 2-7 cm wide.
Flowers:
Heads with ray and disk flowers, few to numerous, terminal at the ends of branches; disks columnar, grey to yellow, becoming purplish-brown, mostly 1.5-4.0 cm tall, 5-20 mm wide; involucral bracts 5-10 mm long, lanceolate, reflexed when mature, hairy; ray flowers yellow or rarely purplish, 1.5-4.5 cm long, reflexed, usually 3-7; disk flowers dark, columnar.
Fruits:
Achenes flattened, fringed with small hairs and slightly winged on the inner margin and tip, grey-black, about 2 mm long; pappus an evident bristle-tooth on the inner angle of the achene, often with a shorter one on the outer angle.
Source: The Illustrated Flora of British Columbia
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