General:
Annual herb from a fibrous root; stems erect, branched above, solitary, exuding milky juice when broken, 0.3-1.5 m tall.

Leaves:
Basal leaves lacking; stem leaves alternate, toothed or occasionally basally lobed, egg-shaped to almost round or rounded, thin, lower ones stalked, upper ones more or less unstalked, toothed, 2.5-10 cm long, 2-7 cm wide.

Flowers:
Heads with strap-shaped flowers, several to many in an elongate to rounded inflorescence; involucres 4-8 mm tall; involucral bracts linear-lanceolate, the mostly 8 bracts evidently keeled at least toward the base; ray flowers yellow, usually about 13.Fruits; Achenes nerved, oblong, curved, tips rounded, 3-5 mm long, glabrous; pappus lacking.

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