Culms 5–6 m, 1.5–2.5 cm in diam.; internodes pale green, 10–27 cm, initially brown setose, later glabrous; nodes strongly prominent, pubescent; root thorns dense, basally swollen. Culm sheaths deciduous, initially yellow striped, oblong-elliptical, distally broad, longer than internode, leathery, striate, sparsely appressed tawny setose; setae deciduous, ca. 1 mm; apex triangular, 1.1–1.3 cm wide, truncate; auricles absent; ligule truncate or slightly convex, 5–7(–12) mm, apex membranous, fimbriate; blade erect, lanceolate, 5–7 × 0.5–0.7 cm. Leaves 3 or 4 per ultimate branch; sheaths glabrous, margins ciliate; auricles absent or inconspicuous; oral setae several, 4–7 mm; ligule convex, ca. 1.5 mm, pubescent; blade narrowly lanceolate, 9–13 × 0.9–1.3 cm, apex finely pointed, tip to 8 mm. Inflorescence unknown. New shoots Jun–Sep.
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A bamboo. It grows 6-8 m tall. The culms are 2-3 cm across. The internodes are pale green and 10-27 cm long. There are 3 or 4 leaves on the last branch. They are 9-13 cm long by 1 cm wide.
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