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General:
Perennial herb from a branching, thickened stem-base; stems erect, several, simple, finely hairy with short, appressed or loose hairs, 1.5-15 cm tall.
Leaves:
Basal leaves abruptly contracted to stalked, with broad, elliptic to egg-shaped or almost round blades, entire, 0.5-8 cm long, 4-13 mm wide, hairy like the stems; stem leaves few, reduced and narrow.
Flowers:
Heads with ray and disk flowers, solitary, the disks 7-16 mm wide; involucres 5-8 mm tall; involucral bracts loose, equal, leafy and sometimes tinged with red, sparsely to densely long woolly-hairy, the hairs sometimes with purple cross-walls; ray flowers mostly 25-70, yellow, 6-9 mm long, 1.4-2.5 mm wide; disk flowers 3.5-5.0 mm long.
Fruits:
Achenes hairy, 2-nerved; pappus double, inner of 10-25 bristles, outer of short bristles or narrow scales.
Notes:
Tonestus (Haplopappus) lyallii, a somewhat similar alpine species, is easily distinguished from Erigeron aureus by its abundance of glands.
Source: The Illustrated Flora of British Columbia
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