露舌箭竹 lu she jian zhu

Rhizome neck (1.5–)2–5.5 cm, (0.8–)1–2 cm in diam. Culms 3–4.5(–5) m, 0.8–1.6(–2.5) cm in diam.; internodes terete, 20–23 cm, initially white powdery, glabrous; wall 3–4 mm thick; supra-nodal ridges level or slightly prominent; sheath scar prominent. Branches 7–15 per node; culm bud 1, narrowly ovoid, appressed, margins white ciliate. Culm sheaths deciduous, oblong-triangular, ca. 3/5 as long as internodes, leathery, shoulders convex on sheaths of upper culm, grayish white or yellow setose, margins slightly yellow or gray ciliate; auricles and oral setae absent; ligule purple, truncate or concave, 0.5–1 mm, wider than base of sheath blade, glabrous; blade erect or reflexed, triangular or linear-triangular, glabrous, margins serrulate. Leaves 3–6 per ultimate branch; sheath glabrous; auricles and oral setae absent; ligule purple, truncate or arched, ca. 0.5 mm, glabrous; blade narrowly linear-lanceolate, 4–9.5 × 0.4–0.8 cm, glabrous, secondary veins (2 or)3-paired, transverse veins distinct, base cuneate, margins serrulate. Inflorescence unknown. New shoots Jul.

* 2700–2800 m. S Sichuan (Mianning).

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