Perennial, rhizomes crowded. Culms densely tufted, 50–120 cm tall, erect, minutely hairy. Leaf sheaths densely pubescent with reflexed hairs or upper part glabrous; leaf blades flat, 10–25 cm × 5–12 mm, scattered pubescent, margins densely hairy. Panicle spreading, 12–20 × 10–15 cm, 1-sided, apex nodding: branches elongate, slender, bearing 1–4 spikelets, lowermost branches with basal non-ciliate bracts. Spikelets lanceolate-acuminate, 15–30 mm, florets 5–9; glumes scabrid, lower glume linear-lanceolate, 7–8 mm, 1-veined, upper glume oblong-lanceolate, 9–11 mm, 3-veined; lemmas narrowly lanceolate, 11–14 mm, pubescent; awn 5–8 mm, straight; palea conspicuously shorter than lemma. Anthers 2.5–3 mm. Fl. Jun–Jul. 2n = 28.
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