Rhizome neck 4–10 cm. Culms 4–8 m, 1–3 cm in diam.; internodes terete, 24–30 cm, initially densely white powdery, glabrous, longitudinal ribs prominent; wall 4–5 mm thick; supra-nodal ridges level or weakly prominent; sheath scar prominent, initially gray-yellow setose. Branches 7–15 per node, initially white powdery; culm sheaths persistent, triangularly narrowly rounded, proximally papery, distally leathery, glabrous or sparsely yellow-brown setose, longitudinal ribs very prominent, margins densely yellow-brown setose; auricles absent; oral setae deciduous, yellow-brown, 1–2 mm; ligule truncate or arcuate, 1–2 mm, glabrous, initially densely yellow-brown ciliate; blade reflexed or erect, lanceolate or triangular-lanceolate, glabrous. Leaves 1–3 per ultimate branch; sheath glabrous; auricles and oral setae absent; ligule purple, truncate, glabrous; blade narrowly lanceolate, 4–8 × 0.5–0.8 cm, thin, both surfaces glabrous, secondary veins 2-or 3-paired, transverse veins distinct, base broadly cuneate, margins serrulate, apex acuminate. Inflorescence unknown. New shoots Aug.
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A bamboo. It grows 4-6 m high. The culms are 1-3 cm across. The internodes are 24-30 cm long. There are 7-15 branches at each node. There are 1-3 leaves at the last branch. The leaf blades are 4-8 cm long by 5-8 mm wide.
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