光竹 guang zhu

Qiongzhuea luzhiensis Hsueh & T. P. Yi, Acta Bot. Yunnan. 5: 45. 1983; Oreocalamus luzhiensis (Hsueh & T. P. Yi) P. C. Keng.

Culms 2.5–5 m, 1–2 cm in diam.; internodes terete or slightly 4-angled, (10–)14–18(–20) cm, (1 or)2-grooved, white powdery, glabrous; wall 3–5 mm; nodes with conspicuous ridge, glabrous, glossy; sheath scar conspicuous, yellow-brown hispid, with persistent base of culm sheath. Branches 3(–5) per node. Culm sheaths persistent, red-brown or yellow-brown, triangular, leathery, sparsely brown setose, margins densely brown hirsute, apex truncate; auricles absent; ligule truncate, ca. 1 mm, initially yellow-brown ciliate; blade erect, triangular, linear, or lanceolate, 2–9 mm, longitudinal veins distinct. Leaves 2 or 3(or 4) on ultimate branches; ligules truncate, ca. 1 mm, glabrous; blades lanceolate, (7–)15–23(–30) × (1.1–)1.6–2(–2.4) cm, thickly papery, secondary veins 5–7-paired. Inflorescence unknown. New shoots Sep–Oct.

* Broad-leaved forests; 1700–1900 m. Guizhou (Luzhi).