Stoloniferous perennial; culms 70–100 cm. high, geniculately ascending from a prostrate base.. Leaf-blades flat, up to 14 cm. long and 3 mm. wide, glabrous.. Panicle linear to oblong, 10–20 cm. long, loose to moderately dense, the branches scaberulous, slender, spreading or ascending.. Spikelets narrowly elliptic, 2.5–3 mm. long, green or purple; glumes persistent, lanceolate, the upper a little shorter than the lower, 1-nerved, scabrid on the keel and sides, acute; lemma broadly elliptic, 1.7 mm. long, sparsely pubescent, finely 5-nerved, truncate and denticulate, awned from two-thirds the way up the back; awn straight, 2–4 mm. long, or some of the spikelets in the panicle awnless; palea almost as long as the lemma; rhachilla scarcely produced.
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