Description from Flora of China
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.
* Evergreen broad-leaved forests; 1700–1900 m. SE Yunnan (Maguan).