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General:
Perennial herb from a taproot and branched, woody stem-base; stems ascending to erect, simple to branched above, with finely-appressed, stiff, basally-swollen hairs, densely so at the base, 10-50 cm tall.
Leaves:
Basal leaves linear to threadlike, entire, 1-8 cm long, 0.3-3 mm wide, hairy like the stems; stem leaves similar, evenly distributed along the stem, gradually reduced upwards.
Flowers:
Heads with ray and disk flowers, solitary or several, the disks 5-15 mm wide; involucres 4-6 mm tall; involucral bracts with closely-appressed, long, stiff, basally swollen hairs and/or finely glandular, somewhat thickened on the back, subequal; ray flowers 15-50 (70), blue, sometimes pink or white, 3-13 mm long, 1-2 mm wide; disk flowers about 2.5-4.4 mm long.
Fruits:
Achenes 2-nerved, more or less hairy or glabrous; pappus simple, of 20-30 slender but firm, white bristles, rarely with inconspicuous outer scales.
Source: The Illustrated Flora of British Columbia
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