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Perennial, tufted grass from fibrous roots; stems erect or decumbent, sometimes rooting at the lowest nodes, 30-90 (110) cm long/tall.
Sheaths open; blades flat, rough, mostly 3-10 mm wide; ligules of the lower leaves nearly entire, blunt, 1.5-2 mm long, those of the upper leaves finely jagged with fine hairs, sometimes more or less jagged, blunt to rounded, up to 6 mm long.
Inflorescence a cylindrical panicle, 3-10 cm long, the ends slightly tapered but not sharp-pointed (rounded); spikelets often over 4.5 mm long (excluding awns); glumes with the nerves and keels fringed with long, fine hairs, sharp-pointed, (4) 5 (6) mm long; lemmas smooth or hairy on the keels above, the margins fused for 1 mm or less, subequal to the glumes, sharp-pointed, awned, the awns inserted at about 1 mm above the base, abruptly bent, exserted 2-5 mm beyond the glumes; anthers 2.3-3.5 mm long.
Source: The Illustrated Flora of British Columbia