Glyceria grandis var. grandis

General:
Perennial grass from conspicuous rhizomes; stems erect to more or less decumbent, hollow, 90-160 (200) cm tall/long.

Leaves:
Sheaths smooth, closed completely or open for as much as 1 cm; blades 6-15 mm wide, flat, firm, the upper surfaces minutely rough, smooth on the lower surfaces; ligules blunt, nearly entire, 4-9 mm long.

Flowers:
Inflorescence an open, loose panicle, 20-35 cm long, the branches numerous, spreading; spikelets loosely (4-) 5- to 6- (7-) flowered, flattened slightly, egg-shaped, about 4.5 mm long and 1.8 mm wide; glumes lanceolate, the lower ones 1.5-1.7 (2) mm long, the upper ones about (2.3) 2.4-2.6 (3) mm long, usually more or less minutely fringed with fine hairs, the margins sometimes slightly irregularly jagged; lemmas prominently 7-nerved, purplish, about 2.1-2.7 mm long, somewhat irregularly jagged at the blunt tips; paleas abruptly notched, the notches wide, V-shaped, or the margins sometimes slightly irregularly jagged, concealed by the lemmas; stamens 3, sometimes 2; anthers mostly 0.5-0.8 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