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Annual or biennial herb from a taproot; stems erect, solitary, usually branched, sticky-glandular, 10-60 cm tall.
Basal leaves smaller than the stem leaves, usually deciduous by flowering time; stem leaves lanceolate to oblanceolate, stalked to unstalked, 2.5-10 cm long, 1-6 cm wide, deeply pinnately lobed, the segments again toothed or lobed, sticky-glandular, not much reduced upwards.
Heads with ray and disk flowers, few to numerous on sticky-glandular stalks in an open inflorescence; involucres 7-10 mm tall; involucral bracts lanceolate, sticky-glandular, green, margins papery, faintly black-tipped; bracteoles few, inconspicous; ray flowers yellow, mostly 1-4 mm long; disk flowers yellow.
Achenes oblong, faintly ribbed, glabrous; pappus of white hairlike bristles.
Source: The Illustrated Flora of British Columbia