Culms to 4 m, to 2.5 cm in diam.; internodes initially green, to 35 cm, glabrous, glaucous. Culm sheaths narrowly triangular, longer than internodes, brown setose, densely so at base, margins ciliate, auricles and oral setae absent; ligule arched, ca. 1 mm, ciliate; blade erect, conical-lanceolate, 1–3 cm, glabrous. Leaves 2 or 3 per ultimate branch; sheath pale, initially pubescent, margins glabrous; auricles and oral setae absent; ligule ca. 5 mm, fragile; pseudopetiole 7–15 mm; blade elliptic-lanceolate to ovate-lanceolate, 22–32 × 2–4.5 cm, abaxially pubescent, secondary veins 9–11-paired, base cuneate, margins serrulate, apex acuminate or acute. Inflorescence unknown.

This species is possibly a synonym of Acidosasa nanunica.

* Slopes; below 500 m. S Zhejiang.