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

37. Yushania mabianensis T. P. Yi, J. Bamboo Res. 5(1): 47. 1986.

马边玉山竹 ma bian yu shan zhu

Rhizome neck 20–35 cm. Culms 1–2 m, 4–8 mm in diam.; internodes initially purple spotted, terete, 17–27 cm, white powdery and gray-brown setulose below nodes, smooth; wall ca. 2 mm; supra-nodal ridges level or prominent; sheath scar weakly prominent, initially densely retrorsely brown setose. Branches 1 at lower nodes to more than 3 at upper nodes. Culm sheaths persistent, yellow-brown, narrowly triangularly rounded, shorter than internodes, leathery, retrorsely yellow-brown setose, margins densely ciliate; auricles falcate; oral setae erect, ca. 5 mm; ligule truncate or arcuate, ca. 0.5 mm, glabrous; blade readily deciduous, reflexed, linear-lanceolate, glabrous. Leaves 3–5 per ultimate branch; sheath glabrous or setulose, margins initially ciliate; auricles falcate or elliptic; oral setae ca. 11, radiating, 5–7 mm; ligule truncate or arcuate, glabrous; blade lanceolate or linear-lanceolate, 7–20 × 1.4–2.8 cm, glabrous, secondary veins 5- or 6-paired, transverse veins distinct, base broadly cuneate, one margin densely serrulate, other margin obscurely so. Inflorescence unknown. New shoots Sep.

* 1400–2000 m. S Sichuan.


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