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Annual, simple to somewhat tufted grass from fibrous roots, smooth; stems 5-50 cm tall.
Sheaths open; leaves mostly basal; blades threadlike, usually in-rolled, smooth to rough below, barely 1 (1.5) mm wide; ligules entire, hairy, sharp- to long-pointed, (1) 3-6 mm long.
Inflorescence a narrow to widely spreading panicle, up to 25 cm long, sometimes reduced to a simple raceme; glumes 3-nerved, smooth to more or less rough, long-pointed, usually slightly exceeding the upper florets, the lower glumes 1-nerved, usually slightly longer than the upper glumes, 5-8 mm long; rachilla joints with hairs about as long as the calluses; lemmas firm, 5-nerved, smooth, shining, often purplish, about 2.5 mm long, the tips blunt, jagged and more or less fringed with fine hairs, awned from below midlength, the awns abruptly bent, about 5 mm long, the calluses strongly stiff-hairy about 1 mm long; paleas nearly equal to the lemmas; lodicules lanceolate, 0.2-0.3 mm long; anthers 0.3-0.5 mm long.
Source: The Illustrated Flora of British Columbia