General:
Perennial grass from conspicuous rhizomes; stems erect to more or less decumbent, hollow, 100-150 cm tall/long.

Leaves:
Sheaths somewhat flattened, rough, the hairs directed backwards, closed to near the tops; blades 6-10 (12) mm wide, flat; ligules more or less cut-off at the ends, the margins usually irregularly jagged, strongly hairy, minutely rough, the lower leaf ligules 3-6 mm long.

Flowers:
Inflorescence a loose, open panicle, 15-25 cm long, the branches spreading; spikelets mostly 4- to 7-flowered, egg-shaped, about 5 mm long and 2 mm wide; glumes more or less fringed with fine hairs, the margins irregularly jagged, the lower ones (0.7) 1 (1.2) mm long, the upper ones about (1.1) 1.5 (1.8) mm long; lemmas prominently 7-nerved, slightly irregularly jagged, 2-2.5 mm long; palea tips with narrow slits, concealed by the lemmas; stamens 2; anthers 0.7-0.8 mm long.

Source:  The Illustrated Flora of British Columbia

If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.

Illustration Source:  The Illustrated Flora of British Columbia