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FOC | Family List | FOC Vol. 22 | Poaceae | Yushania

51. Yushania rugosa T. P. Yi, J. Bamboo Res. 5(1): 61. 1986.

皱叶玉山竹 zhou ye yu shan zhu

Rhizome neck 20–40 cm. Culms 1–2 m, 5–8 mm in diam.; internodes initially purple spotted, terete, 12–18 cm, white powdery below nodes, glabrous; wall 1.5–2.3 mm thick; supra-nodal ridges weakly prominent; sheath scar weakly prominent, initially brown setulose. Branches 1 per node, nearly as wide as culm. Culm sheath persistent, triangularly narrowly rounded, leathery, base sparsely purple-brown setose, margins purple setose; auricles purple, small; oral setae 3–5, purple, 2–3 mm; ligule convex, ca. 1 mm; blade reflexed, lanceolate, glabrous, margins slightly serrulate. Leaves 5–9 per ultimate branch; sheath glabrous, initially white powdery; auricles absent; oral setae 3–5, readily deciduous, 2–3 mm; ligule purple, truncate, ca. 1 mm, glabrous; blade broadly lanceolate or ovate-elliptic, 9–20 × 3–5 cm, glabrous, secondary veins 7–9-paired, transverse veins distinct, base rounded or broadly cuneate, margins serrulate. Inflorescence unknown. New shoots Aug.

* 1400–1600 m. NW Guangxi, S Guizhou.


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