Perennial. Culms loosely tufted, erect, 60–120 cm tall, 3–5-noded. Leaf sheaths usually longer than internodes, basal sheaths densely pubescent, upper sheaths glabrous; leaf blades flat or margins involute, 10–25 cm, 3–5 mm wide, scabrid or adaxial surface thinly pubescent, apex acuminate; ligule truncate, 1–2 mm. Panicle loose, up to 20 cm, erect or nodding; branches 2–4 per node, ascending or spreading, lower 5–12 cm, slender, scabrid, bare in lower part, with up to 9 spikelets. Spikelets 1–1.4 cm, greenish or purplish, florets 2–5; rachilla hairs 1–2 mm; glumes hyaline at margins and apex, lower glume 4–9 mm, 1–3-veined, upper glume 7–10 mm, 3–5-veined; lemmas subleathery with hyaline apex, lowest 9–11 mm, 5–7-veined, scabrid at least toward apex, apex 2-lobed, lobes acuminate or shortly awn-pointed; awn 1–2 cm, weakly geniculate, column loosely twisted, terete; palea keels minutely ciliolate to ciliate with 0.1–0.2 mm hairs. Anthers 2–3.5 mm. Fl. and fr. Jun–Aug.
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