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Aromatic annual herb from a slender taproot; stems erect, simple, branched above, stiff-hairy, 5-30 cm tall.
Basal leaves lacking; stem leaves alternate, simple, entire, linear, 1-4 cm long, 1-2 mm wide, glandular, stiff-hairy.
Heads with ray and disk flowers, solitary at the ends of branches in an open, flat-topped inflorescence; involucres depressed-globose, 2.5-4.5 mm tall; involucral bracts linear dorsally, crescent shaped laterally, 4-8, glandular; ray flowers yellow, 4-8, 1 mm long; disk flower yellow, receptacular bracts united around the fertile disk flower.
Achenes compressed, 1.8-2.8 mm long, dark brown or black; disk achenes sterile; pappus lacking.
Source: The Illustrated Flora of British Columbia