Perennial forming small dense tussocks from a short rootstock; basal sheaths persistent. Culms stiffly erect, 7–45 cm tall, 1–2 mm in diam., scabrid under panicle, otherwise smooth, 2–3-noded. Leaf sheaths scaberulous; leaf blades stiff, setaceous, 3–16 cm, 1–2 mm wide, both surfaces and margins scabrid, apex acute; ligule membranous, 0.5–2 mm, truncate or obtuse, ciliolate. Panicle narrowly lanceolate in outline, 3–8.5 cm; branches erect, up to 3 cm; pedicels hispid. Spikelets 8–12 mm, greenish with purple apices; rachilla extension minute; glumes lanceolate, as long as spikelet, 5-veined, almost smooth or scaberulous; lemma (6–)8–9 mm, 5-veined, villous, lobes 3–6 mm; awn 0.9–1.1 cm; palea a little shorter than lemma, pubescent between veins, apex 2-toothed. Lodicules 1.5–2 mm. Anthers ca. 1 mm. Ovary glabrous. Fl. and fr. Aug–Sep.
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