Rhizome neck 4–6.5 cm. Culms 3–5 m, 1–2 cm in diam.; internodes terete, 20–30 cm, initially white powdery, glabrous, longitudinal ribs absent; wall 2.5–3.5 mm thick, pith spongy, becoming granular; supra-nodal ridges level or weakly prominent; sheath scar prominent to greatly prominent. Branches 5–15 per node; buds subcircular or elliptic, pubescent, margins ciliate. Culm sheaths deciduous, narrowly triangular, longer than internodes, proximally leathery, distally papery, densely yellow-brown setulose, longitudinal ribs prominent, margins brown setose; auricles and oral setae absent; ligule truncate, 1.5–7 mm, sparsely ciliate; blade reflexed, linear-lanceolate, proximally sparsely pilose, articulate with sheath. Leaves 3–5 per ultimate branch; sheath initially gray-yellow pubescent on ventral ridge, margins yellow-brown ciliolate; auricles and oral setae absent; ligule purple, truncate, ca. 1 mm, ciliate; blade narrowly lanceolate, 5.5–13 × 0.4–0.9 cm, abaxially proximally gray or gray-yellow pubescent, secondary veins 3-or 4-paired, transverse veins distinct, base cuneate, margins spinescent-serrulate. Inflorescence unknown. New shoots Jul.
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A bamboo. It grows 3-5 m tall and the culms are 1-2 cm across. The internodes are 20-30 cm long. There are 5-15 branches at each node. There are 3-5 leaves at the end branch. The leaf blade is 6-13 cm long by 4-9 mm wide.
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