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General: Annual tufted grass from fibrous roots; stems 2-15 cm tall.
Leaves: Sheath margins open about 2/3 their length; sterile shoots emerging inside the sheaths with indistinct two-keeled buds protecting the scales; blades 1-4 mm wide, flat, thin; ligules 0.5-3 mm long, the backs smooth, hairless.
Flowers: Inflorescence an erect panicle, 1-6 cm long, 1.5-3 times longer than wide, the branches 1 to 2 (5) per node, ascending; spikelets laterally compressed, 3-5 mm long, 2- to 6-flowered; the lower glumes 1-nerved; rachillas smooth, hairless, visible from the side, terminal internodes 1/2-3/4 the length of the terminal lemmas; lemmas lanceolate, 2-2.5 mm long, the tips rounded to sharp-pointed, surface smooth, keel, marginal, and lateral nerves short silky-hairy, lateral nerves moderately prominent; calluses hairless; palea keels silky-hairy; flowers bisexual, or the upper ones in a spikelet female; anthers 0.1-0.5 mm long, more or less globe-shaped prior to opening.
Source: The Illustrated Flora of British Columbia
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