Culms usually erect, sometimes slightly decumbent at base, 60–90 cm tall. Leaf sheath glabrous; leaf blade flat, 10–15 × 0.5–1 cm, glabrous or adaxial surface slightly pubescent. Spike pendulous, lax, 15–20 cm; rachis margin scabrous, ciliolate. Spikelets glaucous or purplish glaucous, usually 2 per node, with (3 or)4 or 5 florets. Glumes narrowly lanceolate, 4–5 mm, 3–5-veined, glabrous, scabrous along veins, apex acuminate or with awn ca. 4 mm. Lemma lanceolate, 5-veined, obscurely so at base, scabrous or puberulent; first lemma 8–11 mm; awn 15–20 mm. Palea equaling lemma, ciliolate along keels, puberulent between keels. Fl. and fr. Jun–Aug. 2n = 28*, 42*.
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