玉龙山箭竹 yu long shan jian zhu

Rhizome neck 6–12 cm. Culms 5–7 m, 1–2.5 cm in diam.; internodes terete, 35–45 cm, initially white powdery, brown setose immediately below node, white-gray setose above; wall 2–4 mm thick; supra-nodal ridges level or weakly prominent; sheath scar prominent, initially yellow-brown setose. Branches many per node. Culm sheaths gradually deciduous to persistent, triangularly narrowly rounded, leathery, longitudinal ribs obscure, densely yellow-brown setose, margins yellow-brown setose; auricles absent; oral setae few, yellow-brown, 1–5 mm, slender; ligule truncate or convex, 1–2 mm, initially ciliate; blade reflexed or erect, linear-lanceolate, glabrous, margins smooth. Leaves 2–5 per ultimate branch; sheath glabrous; auricles and oral setae absent; ligule arcuate, 1–1.5 mm; blade narrowly lanceolate, 5–8 × 0.4–0.9 cm, glabrous, secondary veins 2–4-paired, transverse veins distinct, base broadly cuneate, margins spinescent-serrulate. Inflorescence unknown. New shoots Jun–Jul.

* 3000–4200 m. NW Yunnan.

The shoots are edible, and the split culms are used for weaving.