Culms 6–8 m, 2–3 cm in diam.; internodes 30–40 cm, thinly glaucous especially below nodes, initially roughly hairy, distally minutely papillate; cavity with slightly granular pith; nodes prominent; sheath ring corky, initially setose. Culm sheaths green or yellow-brown, basally suboblong, leathery, sparsely setose, apex broad; auricles kidney-shaped to elliptic, 7–8(–15) × 4–5(–9) mm, scabrid; oral setae radiate, 1–1.5 cm; blade usually reflexed or horizontal, lanceolate at culm apex, triangular at mid-culm, pubescent, margins serrulate. Leaves 4–6 per ultimate branch, sheath glabrous, margins ciliate, auricles weak or absent; oral setae erect, ca. 1 cm; ligule truncate or arcuate; very short, blade lanceolate, 11–18 × 1.1–1.6 cm, thin, glabrous, secondary veins 4–6-paired, margins serrulate. Inflorescence unknown. New shoots Apr–May.
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