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Medium shrub, 0.5-2 m tall; branches erect to arching, angled, minutely star-shaped-hairy when young, eventually with brown, papery, shredding bark.
Alternate, deciduous, stalked, the blades egg- to heart-shaped in outline, 3-5 cm long, palmately 3- to 5-lobed, the lobes irregularly double-toothed, star-shaped-hairy at least on the lower surface.
Inflorescences dense, terminal, half-rounded clusters of several to many stalked flowers, the stalks star-shaped-hairy; corollas white, saucer-shaped, the petals 5, nearly circular, about 3 mm long; calyces densely star-shaped-hairy, 5-lobed, the lanceolate lobes about 3 mm long, somewhat bent back; ovaries superior; stamens about 30.
Follicles, 2, joined at the base at least to midlength, inflated, 7-10 mm long, densely star-shaped-hairy; seeds 1 to 4 per follicle, hardened, shiny.
Source: The Illustrated Flora of British Columbia