Perennial, tufted. Culms geniculate at base, 7–20 cm tall. Leaf sheaths smooth, uppermost often reaching inflorescence base; ligule ca. 1 mm; leaf blade conduplicate or inrolled, 1–4 cm, 1–2 mm wide, adaxial surface scabrid. Panicle dense, 4–6 cm; branches 2–4 cm, smooth, upper part with 2–4 spikelets. Spikelets 4–5.5 mm, florets 3 or 4; lower glume 1–1.2 mm, upper glume ca. 1.5 mm; lemmas 2.5–3 mm, glabrous, upper part keeled, apex obtuse; palea keels with a few teeth; anthers 0.6–0.8 mm. Fl. Jun–Jul.
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