Yushania yadongensis T. P. Yi

Rhizome neck 11–65 cm, internodes hollow. Culms to 4 m, 1–2 cm in diam.; internodes terete, 21–34 cm, white powdery in ring below nodes, slightly setulose initially; wall 2–3 mm; longitudinal ribs prominent; nodes with weakly prominent supra-nodal ridge; sheath scar level, glabrous. Branches 3–7. Culm sheath gradually deciduous, rectangular, conspicuously longitudinally ribbed, leathery, abaxially glabrous and waxy, margins dark gray ciliolate; auricles and oral setae absent; ligule truncate, ca. 0.5 mm, glabrous; blade linear-triangular, adaxially yellow-brown hairy proximally, revolute. Leaves 2 or 3 per ultimate branch; sheath apically puberulous with glabrous margins; auricles absent; oral setae gray, 3–4 mm; ligule truncate, glabrous; blade lanceolate, 3.3–6 × 0.5–0.8 cm, basally broadly cuneate or rounded, abaxially gray pubescent, secondary veins 2-paired, transverse veins distinct, margins scabrous. Inflorescence unknown. New shoots May–Jun.

S Xizang [Bhutan].

Forests, pastures; 2000–2800 m.

Yushania longissima T. P. Yi, J. Bamboo Res. 2(2): 46. 1983, not K. F. Huang & Q. F. Zheng (1982); Fargesia longis-sima T. P. Yi, nom. illeg. superfl.

Yushania yadongensis là một loài thực vật có hoa trong họ Hòa thảo. Loài này được T.P.Yi miêu tả khoa học đầu tiên năm 1985.

亚东玉山竹（学名：Yushania yadongensis）为禾本科玉山竹属下的一个种。