Caespitose perennial; culms 30–60 cm. high; basal sheaths neither broad and papery nor horny.. Leaf-blades involute, 5–10 cm. long, up to 2 mm. wide.. Panicle linear to narrowly lanceolate, 6–17 cm. long; primary branches in 6–15 whorls, bare in the lower half of their length, longer than the interval between whorls.. Spikelets 2.5–3 mm. long, glabrous, dark green; lower glume narrowly lanceolate, 1–1.7 mm. long; upper glume lanceolate-elliptic, as long as the spikelet; lemma similar to the upper glume or a little shorter; anthers 3, 1.5–1.7 mm. long.. Grain unknown.
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