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General:
Annual grass from fibrous roots; stems usually smooth or hairy only above, 40-80 (100) cm tall.
Leaves:
Sheaths usually spreading soft-hairy or the hairs angled downwards; blades 3-10 (12) mm wide, flat, soft-hairy on both surfaces; ear-shaped lobes lacking at the leaf-bases; ligules somewhat jagged, (2) 3-5 (6) mm long.
Flowers:
Inflorescence a panicle, 10-15 cm long, the branches elongate, nearly erect to spreading, bearing mostly 1 or 2 spikelets; spikelets 5- to 7- (8-) flowered, widest above the midlength, 2.5-4 cm long; florets closed, self-fertilizing; glumes narrowly lanceolate, smooth, the lower ones 1- (rarely 3-) nerved, 13-20 (22) mm long, the upper ones 3-nerved, 25-33 mm long; lemmas rough to short-hairy, 22-30 mm long, long-pointed, bidentate, the teeth slender, 3-4 mm long, awned, the awns straight, 35-60 mm long; anthers (2) 3, mostly included, 1-1.5 mm long, but sometimes exserted and 3-3.5 mm long.
Source: The Illustrated Flora of British Columbia
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