E-Flora BC: Electronic Atlas of the Flora of British Columbia

General:
Perennial herb from a taproot and branching stem-base; stems erect or ascending, simple or several, harshly stiff-hairy to spreading-hairy or smooth below, 0.2-1 m tall.

Leaves:
Basal leaves soon deciduous; middle and upper leaves opposite, simple, entire, roughened, lanceolate or elliptic, more or less 3-nerved, up to 15 cm long, 5 cm wide; lowermost leaves oblanceolate and smaller than those above.

Flowers:
Heads with ray and disk flowers, solitary; involucral bracts lance-linear, often pointed, stiff-hairy, also with marginal hairs; ray flowers bright yellow, 13-21, 2-4.5 cm long; disk flowers yellow; involucres 12-15 mm tall.

Fruits:
Achenes strongly compressed, wing-margined, finely-appressed-hairy; pappus of 2 upwardly hairy, unequal awns.