General:
Perennial herb or semi-shrub from a freely branched base, forming clumps or loose mats up to 60 cm wide; stems ascending to erect, simple, several, 10-40 cm tall/long, white woolly.

Leaves:
Basal leaves linear to linear-lanceolate, grey-hairy on both surfaces, the upper surface less hairy, the blades 3-10 cm long, narrowed gradually to the stalk; stem leaves lacking.

Flowers:
Inflorescence a compound umbel, subtended by a whorl of leaflike bracts; flower stalks usually with whorl of leaflike bracts at about midlength; involucres bell-shaped, woolly, 5- to 12-lobed, the lobes 2-3 mm long, at least half as long as tubes, reflexed or spreading; perianths white to cream or creamy yellow, occasionally rose-tinged, 3-4 mm long, 6-lobed, smooth.

Fruits:
Achenes, hairy above the middle.

Source:  The Illustrated Flora of British Columbia