Rhizome neck 4–8 cm, 0.8–1.8 cm in diam. Culms 2.5–5.5 m, 1–1.7 cm in diam.; internodes terete, 21–25(–30) cm, smooth, initially sparsely white powdery; wall 3–5 mm thick; nodes and sheath scars weakly prominent. Branches 10–40 per node, subequal, slender, secondary branching only from lowermost branches. Culm sheaths deciduous, narrowly triangular-rounded, 1/2–3/5 as long as internodes, thinly leathery, radially white-gray setose, longitudinal ribs conspicuous, margins densely ciliate; auricles and oral setae absent; ligule arcuate or nearly truncate, 0.5–1 mm; blade erect, triangular to linear-triangular, width nearly equal to apex of culm sheath. Leaves 1 or 2 per ultimate branch; sheath margins ciliolate; auricles absent, oral setae few, 1–2 mm; ligule truncate, ca. 0.4 mm; blade linear-lanceolate, 4–9.4 × 0.5–0.9 cm, glabrous, secondary veins 2-or 3-paired, transverse veins obscure, base cuneate, one margin spinescent-serrulate, other margin obscure. Inflorescence unknown. New shoots Apr–May.
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A bamboo. It grows 3-6 m tall. The culms are 1-2 cm across. The internodes are 21-25 cm long. There are 10-40 branches at each node. There are 1 or 2 leaves at the last branch. The leaf blade is 4-10 cm long by 5-9 mm wide.
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