General:
Annual herb from a more or less evident taproot; stems erect, solitary, branched, 15-80 cm tall.

Leaves:
Basal leaves smaller than the stem leaves, usually deciduous by flowering time; stem leaves lanceolate to oblanceolate, 2-12 cm long, 0.4-4 cm wide, more or less pinnately cut, irregularly toothed, stalked near the base, becoming unstalked upwards, sparsely to densely long-hairy or sometimes nearly glabrous.

Flowers:
Heads with ray and disk flowers, several to numerous heads on sparsely to densely long-hairy stalks in an open inflorescence; involucres 5-7 mm tall; involucral bracts lanceolate, black-tipped, sparsely long-hairy and sometimes glandular-hairy at the tips; bracteoles minute, inconspicuous or lacking; ray flowers yellow, inconspicuous, mostly 1-2 mm long; disk flowers yellow.

Fruits:
Achenes oblong, faintly ribbed, white stiff-hairy; pappus of white hairlike bristles.

Source:  The Illustrated Flora of British Columbia

If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.

Illustration Source:  The Illustrated Flora of British Columbia