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Aromatic annual herb from a taproot; stems erect, solitary, simple or with a few ascending branches, long- to stiff-hairy, yellow stalked-glandular above, 10-95 cm tall.
Basal leaves lacking; stem leaves often with fascicles in their axils, alternate, simple, entire, linear or lance-linear, 2-9 cm long, 1-7 mm wide, glandular, stiff-hairy.
Heads with ray and disk flowers, glomerate in 1-many small clusters or in a more open inflorescence; involucres spindle-shaped, 6-9 mm tall; involucral bracts broadly lanceolate, glandular; ray flowers 1-3, about 2 mm long, sometimes lacking from some heads, greenish-yellow to purplish, 1.5-2.5 mm long; disk flowers 1-10.
Achenes 5-nerved, compressed, glabrous, black, 4-6 mm long; pappus lacking.
Source: The Illustrated Flora of British Columbia