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General:
Perennial herb from a strong taproot and freely branched crown, forming loose flat mats up to 60 cm wide; stems prostrate to ascending, simple, several, 10-30 cm tall/long, usually white-woolly.
Leaves:
Basal leaves elliptic to spoon-shaped, grey- to white woolly-hairy on the lower surface, greenish on the upper, the blades 1-3 (4) cm long, narrowed gradually to the stalks; stem leaves lacking.
Flowers:
Inflorescence a large, simple or compound umbel, subtended by a whorl of leaflike bracts; involucres bell-shaped, hairy, 4-6 mm long, the 6-12 lobes 2-3 mm long, often reflexed; perianths creamy or pale to deep yellow, often tinged with rose or purple, smooth, 6-l0 lobed; flowers usually imperfect.
Fruits:
Achenes, smooth.
Notes:
Two closely related varieties occur in BC:
1. Perianth white to cream or pale yellow................. var. subalpinum (Greene) M. E. Jones
1. Perianth bright yellow...................... var. umbellatum
Source: The Illustrated Flora of British Columbia
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