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Perennial herb from a thick short rhizome; stems solitary, simple, erect, 10-60 cm tall.
Basal leaves egg-shaped to oblong-elliptic, short- to long-stalked, 5-12 cm long; stem leaves opposite, reduced except at the first 2-3 nodes, short-stalked or unstalked.
Inflorescence of terminal and sometimes axillary clusters of 1 to several, long-stalked flowers; corollas bluish-purple to whitish with streaks of green, 10-16 mm long, 5-lobed, the lobes cleft nearly to the base, each lanceolate lobe with a pair of circular fringed depressions at the base; calyces deeply 5-lobed, the lobes lanceolate, just over 1/2 as long as the corollas; stamens 2/3 the length of the corollas; anthers 2.5 mm long.
Capsules, lance-elliptic, compressed, 7-12 mm long; seeds oblong, flattened or angular, irregularly broadly winged, dark-brown, glabrous.
Source: The Illustrated Flora of British Columbia