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Perennial, tufted herb from short-creeping rhizomes; stems 5-25 cm tall, exceeding the leaves.
Sheaths light brown, the lower ones bladeless; blades several on each stem, crowded toward the bases, thread-like, the margins in-rolled, 0.5-1 mm wide, typically curving or arching.
Spikes solitary, lanceolate to cylindrical, 1.5-2.5 cm long, 2-4 mm wide, erect, with both female and male flowers, the male flowers towards the tips; bractless.
Perigynia few, lanceolate, 4.5-6 mm long, 1-1.5 mm wide, erect to ascending, reddish-tinged, obscurely compressed-triangular, smooth, nerved, 2 of these prominent, stalked, narrowly wing-margined, the beaks bidentate, about 1 mm long; female scales lanceolate, slightly shorter than the perigynia, the lower ones awn-tipped, the upper ones round-tipped, with broad, green or straw-coloured midribs and brown margins; stigmas 3; achenes 3-angled, smooth, 1.3-1.7 mm long.
Source: The Illustrated Flora of British Columbia