Culms 6–10 m, 1–3.5(–5) cm in diam.; internodes yellow-green, 18–22(–28) cm, distally pilose, hollow; wall 5–6 mm thick; nodes prominent, with a basal ring of tawny hairs. Culm sheaths longer than internode, 12–16 cm wide at base, gradually attenuate upward, papery, striate, base with a thick belt of soft tawny hairs, margins ciliate, apex 3–5 mm wide; auricles tiny; oral setae few; ligule short, sparsely ciliate; blade triangular, 0.3–3 cm, twisted when dry. Leaves 3–7 per ultimate branch; sheaths purple, glabrous; ligule truncate, ca. 1 mm; auricles absent; oral setae scarce; blade lanceolate, 12–20 × 1.2–2.4 cm. Inflorescence a terminal panicle, subtended by several sheathing bracts. Spikelets in verticillate clusters on thin, wavy, scabrous, hairy pedicels, 2.5–3.8 cm; florets 4–6. Glumes 2; rachilla internodes flattened, 5–7.5 mm; lemma lanceolate, 1.2–1.4 cm, papery, long mucronate; palea slightly shorter than lemma; lodicules obovate, one shorter and narrower. Anthers emarginate. Style short; stigmas 2. Caryopsis unknown. New shoots Jul–Aug.
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A bamboo. It grows 6-10 m tall. The culms are 1-4 cm wide. The internodes are yellow-green and 18-22 cm long. They are hollow. There are 3-7 leaves on the last branch. The leaf blades are 12-20 cm long by 1-2 cm wide.
It is a tropical plant. It grows in evergreen broad-leaved forests between 1,700-2,200 m above sea level.
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Evergreen broad-leaved forests; at elevations from 1,700-2,200 metres.
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