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

General:
Aromatic annual herb from a tap root; stems erect, simple, usually branched, roughly hairy becoming glandular upwards, 10-100 cm tall.

Leaves:
Basal leaves lacking; stem leaves alternate, linear to lance-linear, 2-11 cm long, 1-10 mm wide, stiff-hairy and often densely glandular upwards.

Flowers:
Heads with ray and disk flowers, numerous in an elongate inflorescence; involucres urn-shaped, 6-11 mm tall; involucral bracts linear dorsally, crescent-shaped laterally, glandular; ray flowers yellow, 3-9, 1.5-2 mm long; disk flowers 13-15, fertile, with black anthers.

Fruits:
Achenes flattened, hairless, often mottled, 2.8-5 mm long; pappus lacking.