Rhizome neck 20–50 cm. Culms ca. 1.6 m, 4–5 mm in diam.; internodes terete, 15–25 cm, initially slightly white powdery, glabrous, nearly solid. Branches (1 or)2–6, deflexed; nodes with weakly prominent supra-nodal ridge; sheath scar prominent, glabrous. Culm sheath persistent, cartilaginous, narrowly rounded, 2/5–1/2 as long as internodes, abaxially gray or yellow-gray adnately clavate-setose, setae especially dense at base, longitudinal ribs prominent, margins densely ciliate, apex rounded; auricles falcate, with 5–15 oral setae 5–16 mm; ligule arcuate, short; blade erect or reflexed, linear-lanceolate or striped. Leaves 2–5 per ultimate branch. Leaf sheath purple, glabrous; auricle absent or small, oral setae 3–5, erect, 3–6 mm; ligule arcuate, ca. 0.2 mm; blade linear-lanceolate, 4.5–10 × 0.5–0.9 cm, glabrous, secondary veins 3-or 4-paired, transverse veins prominent, base cuneate. Inflorescence unknown. New shoots Jun.
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