Culms erect or geniculate at base, 40–140 cm tall, 2–4-noded. Leaf sheath glabrous, or densely pilose at base; leaf blade ± glaucous, flat, rarely rolled, 5–25 × 0.5–1(–1.2) cm, abaxial surface smooth, adaxial surface smooth or scabrous. Spike erect, somewhat dense, 14–18 × 0.5–1 cm; rachis margin ciliolate. Spikelets green or purplish green, usually stramineous at maturity, (1 or)2 per node, 9–15 mm, with 2–5 florets. Glumes lanceolate or linear-lanceolate, 7–10 mm, 3–5-veined, scabrous or scabrous-hirsutulous along veins, apex acuminate or with awn to 5 mm. Lemma lanceolate, puberulent, pubescent, or densely hirsutulous throughout; first lemma 7–9 mm; awn straight or recurved, 2–20 mm. Palea equaling lemma, ciliate along keels, ± pubescent between keels, apex narrowly truncate. Fl. and fr. Jun–Aug.
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A grass. The culms can be erect or bent at the base. It grows 40-140 cm tall. There are 2-4 nodes. The leaf blade is 5-25 cm long by 1 cm wide.
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