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General: Loosely tufted perennial herb from a taproot and a simple or branched stem-base; stems erect, 10-40 cm tall, starlike-hairy, rarely with a few simple hairs below.
Leaves: Basal leaves oblanceolate, 0.5-4 cm long, 2-10 mm wide, entire or toothed; stem leaves 2-10, egg-shaped to lanceolate, 0.8-3 cm long, 3-12 mm wide, toothed or entire; hairy with stalked starlike hairs, 4- to 5-rayed with the longer 2 rays usually paralleling the leaf axis and again branched; margins hairy-fringed with mostly simple or branched hairs, generally starlike with branches again branched.
Flowers: Racemes several- to many-flowered, occasionally with solitary flowers in upper leaf axils; flower stalks 2-15 mm long, ascending, straight, sparsely soft-hairy to glabrous; petals white, occasionally cream to yellow, notched at the tips, 3.5-5 mm long; sepals 2-3 mm long, sparsely soft-hairy.
Fruits: Silicles, 6-15 mm long, 1.5-3 mm wide, lanceolate to oblong, plane or rarely twisted, glabrous or short-hairy; styles less than 0.25 mm long.
Source: The Illustrated Flora of British Columbia
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