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Perennial herb from a thick woody base and taproot; stems erect, solitary to several, simple, glabrous or white long-hairy above, exuding milky juice when broken, 5-30 cm tall.
Basal leaves linear to linear-lanceolate, rarely over 1 cm wide, mostly 20-50 times as long as wide, rather stiff, pointed, the margins entire or distinctly wavy-margined, usually minutely fringed with small hairs; stem leaves usually lacking.
Heads with strap-shaped flowers, solitary at ends of branches; involucres bell-shaped to hemispheric, 14-30 mm tall; involucral bracts broadly or narrowly lanceolate, pointed, glabrous, or fringed with small hairs and white long-hairy along the midrib, usually dotted or lined with purple on the midrib, the outer bracts more than 3/4 as long as the inner ones; ray flowers yellow.
Achenes cylindric, pale brown, 8-13 mm; pappus silvery, somewhat unequal, each gradually widening upwards to a short terminal bristle, the scalelike portion about 0.5 mm wide near the base.
Source: The Illustrated Flora of British Columbia