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Perennial herb from a yellow to pale brown rhizome; stems erect, 8-12 cm tall in flower, to 35 cm tall in fruit, smooth.
Evergreen, all basal, stalked, 4-17 cm long, 2- or 3-times pinnately compound, occasionally twice 3-parted, the 5 or more leaflets short- to long-stalked, 2-6 cm long, egg-shaped, deeply lobed or incised, toothed.
Inflorescence a 2- or 3-flowered cyme, the flowers nodding; bracts minute; flower stalks 1-4 cm long; petals 5-7, shorter than sepals, clawed, linear-lanceolate, bent back, flattened, nectary on inside surface near base; sepals 5-7, pale greenish-white, bent back and ascending, linear-lanceolate, 6-15 mm long, 0.3-1 mm wide; stamens 9-15.
Follicles, 6 to 10, oblong, 7-10 mm long, spreading on stalks equal to or longer than fruit; beaks curved back, less than 1 mm long; seeds dark, ellipsoid, shiny, about 2 mm long.
Source: The Illustrated Flora of British Columbia