Perennial, tufted. Culms erect, 25–40 cm tall, 2–3-noded, terminal node at lower 1/3. Leaf sheaths smooth; ligule 1.5–2 mm, obtuse; leaf blades flat, 3–8 cm, 1.5–3 mm wide, scabrid. Panicle large, effuse, 12–20 × 5–7 cm; branches many per node, 5–10 cm, scabrid; pedicels 5–8 mm, scabrid. Spikelets 4–7 mm, florets 3–6; glumes with broadly membranous margins, lower glume 1–1.5 mm, 1-veined, upper glume ca. 2 mm; lemmas 3–4 mm, glabrous, apex acuminate; palea keels scabrid on upper part; anthers 0.3–0.5 mm. Fl. Jun–Jul.
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