Culms 5–7(–9) m, 2–3.5(–5) cm in diam.; internodes 60–80(–100) cm, glabrous, nearly solid; nodes prominent; branchlet internodes 1–2 cm at branch base, to 65 cm from 4th or 5th nodes. Culm sheaths drying entire on culms, initially yellow-green, leathery, densely brown or dark brown hairy, apex papery; auricles absent; ligule truncate, 2–3 mm; blade reflexed, initially green, turning brown in age, broadly lanceolate or oblong-lanceolate. Leaf sheath glabrous; auricles absent; oral setae deciduous, 1–2 cm; blade broadly lanceolate, 30–35 × 6–9 cm, base cuneate. Panicles 30–45 cm. Spikelets 1.4–1.8 cm; florets 3–10; rachilla internodes glabrous. Glumes 3–5 mm; lemma ca. 7 mm; lodicules ca. 3 mm. Stamens unknown. Style short; stigmas ca. 1.5 mm. Fruit dark brown, ca. 2 cm, ovoid or subglobose. New shoots Mar–May, fl. Apr.

* Montane broad-leaved forests; 900–1200 m. S Yunnan (Jinping, Luchun).