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

General:
Annual or biennial herb from a fibrous root; stems erect, solitary, branched above, with long (over 1 mm) yellowish (sometimes whitish) hairs, 0.5-1.2 m tall.

Leaves:
Basal leaves oblong to elliptic or narrowly oblanceolate, pinnately lobed or toothed to nearly entire, with or without stalks, 3-20 cm long, 0.5-3 cm wide; stem leaves gradually reduced upwards, lanceolate to oblong, pinnately lobed to irregularly toothed.

Flowers:
Heads with ray and disk flowers, several to many in a rounded inflorescence; involucres 3-13 mm tall; involucral bracts lance-linear, greenish to yellowish, sometimes suffused with purple, glabrous or softly long-hairy or woolly-hairy with yellowish hairs; bracteoles few, usually purplish-tipped; ray flowers yellow, mostly 3-9 mm long or lacking; disk flowers yellow.

Fruits:
Achenes oblong, ribbed, glabrous; pappus of white hairlike bristles.