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Annual, tufted grass from fibrous roots, often rooting at the lower nodes, sometimes forming perennial mats; stems solid, erect to abruptly bent, freely branching below, (3) 5-20 (35) cm tall.
Sheaths smooth or minutely rough; blades flat or in-rolled, 0.6-1.6 mm wide, 1-4 (6) cm long, rough to hairy above, smooth or minutely rough below; ligules translucent to membranous, blunt to sharp-pointed, 1-3.5 mm long.
Inflorescence a very narrow, compact, spikelike, interrupted panicle, 1.6-6 cm long, 2-5 mm wide, few-flowered, the branches ascending, closely appressed, 0.9-1.2 cm long; spikelets 1-flowered, nearly unstalked to short-stalked; glumes greenish-grey, smooth, more or less jagged, 1-nerved, 0.6-1.7 mm long, subequal, blunt, rounded to nearly sharp-pointed, the awn tips about 0.4 mm long, the lower ones 0.6-1.4 mm long, the upper ones 0.7-1.7 mm long; lemmas lanceolate, dark greenish, with appressed, inconspicuous hairs along midnerves and margins on the lower 3/4 or smooth, minutely rough near the tips, (1.5) 1.8-2.5 (3.2) mm long, including the long-pointed to sharp-pointed, less than 1 mm long, awnlike tips, the calluses not bearded; paleas lanceolate, minutely rough near the tips, 1.6-2.6 (3.1) mm long; anthers 0.5-1.2 mm long, purplish.
Source: The Illustrated Flora of British Columbia