E-Flora BC: Electronic Atlas of the Flora of British Columbia

General:
Perennial, tufted grass from fibrous roots; stems erect, to 130 cm tall.

Leaves:
Sheaths smooth; blades flat, folded or in-rolled in young shoots, 2-7 mm wide; ear-shaped lobes at the leaf-bases sickle-shaped (sometimes obscure or absent), smooth; ligules 0.2-0.4 (0.5) mm long.

Flowers:
Inflorescence an open or contracted, simple panicle, (6) 10-25 cm long; spikelets (2-) 4- to 10- (12-) flowered, stalked, (8.5) 12-15.5 (17) mm long, each with 2 glumes; lower glumes (2) 2.6-4.5 mm long, upper glumes 3-5 mm long; lemmas 5-8 mm long, smooth or slightly rough near the tips, unawned or awned, the awns short, sharp, abrupt points up to 0.2 mm long; anthers (1.5) 2-4.6 mm long.