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Perennial herb from a slender rhizome; stems decumbent to ascending, several, branched,4-angled, glabrous or slightly hairy above, 20-90 cm tall/long.
Basal leaves few, reduced, soon deciduous; stem leaves opposite, lanceolate to linear-lanceolate, unstalked, 1.5-4 cm long, usually long-fringed at the base, the margins entire; stipules lacking.
Inflorescence of many flowers in a terminal, membranous-bracted, diffuse cluster; petals 5, white, 2-cleft, 4-8 mm long; sepals 5, lanceolate, abruptly sharp-pointed, 3.5-7 mm long, membranous-margined and usually strongly hairy-fringed, 3-nerved.
Capsules green, oblong to egg-shaped, 4-8 mm long, 6-valved; seeds reddish-brown, 0.9-1.1 mm wide, wrinkled in concentric rows.
Source: The Illustrated Flora of British Columbia