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General: Aromatic annual herb from a taproot; stems erect, simple, often branched above, glandular, 0.2-1.0 m tall.
Leaves: Basal leaves lacking; stem leaves often with clusters of smaller leaves in their axils, alternate, linear or linear-oblong, entire or slightly toothed, unstalked, glandular, 3-18 cm long, 3-12 mm wide; lower stem leaves crowded, soon deciduous.
Flowers: Heads with ray and disk flowers, numerous in an elongate inflorescence; involucres egg-shaped or broadly urn-shaped, 6-12 mm tall; involucral bracts rounded on the back, glandular; ray flowers yellow, 8-13, 3-7 mm long; disk flowers yellow, 11-14, fertile.
Fruits: Ray achenes flattened, 2.5-5 mm, glabrous, sometimes mottled, disk achenes sometimes 1-nerved; pappus lacking.
Source: The Illustrated Flora of British Columbia
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