Rhizome neck 5.5–10.5 cm, 1.5–3 cm in diam. Culms 4–8(–10) m, 1–3 cm in diam.; internodes terete, 20–25(–40) cm or longer, initially often slightly white powdery, glabrous; wall 2–3 mm thick; supra-nodal ridge level or weakly prominent; sheath scar prominent, narrow, initially brown setose. Branches 8–11 per node. Culm sheaths persistent, narrowly triangularly rounded, equal to or longer than internodes, leathery, densely yellow to yellow-brown setose, longitudinal ribs prominent, margins apically ciliate; auricles absent; oral setae few, erect or slightly curved, yellow-brown, 2–8 mm; ligule truncate, 2–5 mm, margins sometimes ciliate; blade readily deciduous, reflexed, linear-lanceolate, adaxially slightly pilose proximally. Leaves 2–5 per ultimate branch; sheath initially white powdery apically, margins initially ciliate; auricles absent; oral setae few, erect, gray-yellow, 3–11 mm, undulate; ligule light green, truncate, ca. 1 mm, glabrous; blade lanceolate, 13–18(–20) × 1.3–2.3(–2.5) cm, usually rugose when dry, glabrous, secondary veins 4-or 5(or 6)-paired, transverse veins distinct, base cuneate, one margin spinescent-serrulate, other margin obscure, apex acuminate. Inflorescence unknown. New shoots Aug.
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A bamboo. It grows 4-8 m tall. The culms are 1-3 cm across. The internodes are 20-25 cm long. There are 8-11 branches at each node. There are 2-5 leaves at the last branch. The leaf blade is 13-18 cm long by 13-23 mm wide.
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