Culms 15–30 cm tall, ca. 1 mm in diam., 3–4-noded. Leaf sheaths pilose along margins and at mouth, otherwise glabrous; leaf blades stiff, narrowly linear or involute, 2–9 × 0.1–0.2 cm, glabrous, apex acute; ligule ca. 0.5 mm. Inflorescence 3–7 × ca. 1.5 cm; rachis pilose; pedicels 1.5–3 mm. Spikelets narrowly oblong to elliptic-oblong, 4–8 × 1.5–2.5 mm, florets 4–8, imbri-cate, slightly decreasing in length toward spikelet apex; glumes linear-oblong, keel scabrid; lower glume 1–1.5 mm, truncate; upper glume 2–2.5 mm, obtuse; lemmas lanceolate with straight keel, lowest ca. 2.5 mm, minutely puberulous, apex abruptly acute to apiculate; palea keels winged, wing margins ciliolate, apex obtuse. Anthers 0.5–1 mm. Fl. and fr. Jun–Nov.
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