Culms 60–110 cm tall, glabrous throughout, or puberulent or pubescent at nodes, sometimes also densely retrorsely pubescent in upper part (exserted from leaf sheath). Leaf sheath glabrous, or retrorsely pubescent at least at base; leaf blade flat, 10–25 × 0.3–0.9 cm, glabrous, scabrous, or adaxial surface pilose. Spike slightly nodding, 12–25 cm. Spikelets 1 per node, green or purplish at base, 15–25 mm excluding awns, with 4–9 florets. Glumes lanceolate or oblong-lanceolate, 3–7-veined, sometimes scabrous along veins, margin sometimes laxly ciliolate, apex acute or pointed; proximal glume 7–9 mm; distal glume 7–10 mm. Lemma lanceolate or oblong-lanceolate, scabrous abaxially, pilose distally, laxly hirsutulous near apex, or hirsutulous throughout, margin ciliate distally; first lemma 8–11 mm; awn erect or slightly reflexed, slender, 15–30 mm. Palea slightly shorter than or subequaling lemma, ciliolate along keels distally, pubescent between keels. Anthers ca. 2 mm. Fl. and fr. May–Jul. 2n = 28*.
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