1. Tribe BAMBUSEAE - China

66POACEAE23. Yushania lacera Q. F. Zheng & K. F. Huang, Acta Phytotax.Sin. 22: 218. 1984.撕 裂 玉 山 竹 si lie yu shan zhuRhizome neck ca. 27 cm; internodes solid. Culms to 2 m,to 0.8 cm in diam.; internodes terete, 11–23 cm, distally whitesetulose with a thickly white powdery ring below each node;wall 1.5–2.2 mm thick; nodes with weakly prominent supranodalridge; sheath scar prominent. Branches 3–6. Culm sheathgradually deciduous or persistent, shorter than internode, thinlyleathery, purplish setulose, margins purplish ciliate, longitudinalribs greatly prominent; auricles absent or small; oral setaeabsent; ligule ca. 1.5 mm, fissured, tomentulose, purple ciliate;blade linear-lanceolate, revolute. Leaves 3–8 per ultimatebranch; sheath glabrous; auricles absent or small; oral setae 2–6, easily deciduous, erect, 3–8 mm; ligule truncate, ca. 1 mm,glabrous; blade lanceolate, 4.5–13 × 1–1.2 cm, abaxially graypubescent, secondary veins 4- or 5-paired, transverse veins notdistinct, base cuneate or broadly cuneate, one margin denselyserrulate, other margin sparsely so, apex acuminate. Inflorescenceunknown. New shoots May.● 1700–1800 m. N Fujian.24. Yushania elevata T. P. Yi, J. Bamboo Res. 5(1): 17. 1986.腾 冲 玉 山 竹 teng chong yu shan zhuRhizome neck to 70 cm; internodes solid. Culms 4–7 m,1.4–6 cm in diam.; internodes terete, 24–60 cm, initially brownsetulose below nodes; wall 4–8 mm thick; nodes with weaklyprominent to prominent supra-nodal ridge; sheath scar initiallybrown setose. Branches 10–20, solid or nearly so. Culm sheathsgradually deciduous, narrowly triangular, shorter than internodes,leathery to cartilaginous, densely yellow-brown woollysetose, margins densely brown setose, longitudinal ribs prominent;auricles absent; oral setae gradually deciduous; liguleconvex or rarely truncate, ca. 1 mm, glabrous; blade linear-lanceolate,revolute, glabrous. Leaves 4–6 per ultimate branch;sheath glabrous; auricles absent; oral setae absent or few, erect,brown, 0.5–1 mm; ligule convex, ca. 0.5 mm, glabrous; bladenarrowly lanceolate, 4.5–9.5 × 0.4–0.9 cm, glabrous, secondaryveins 2- or 3-paired, transverse veins distinct, base cuneate, onemargin serrulate, other margin smooth, apex acuminate. Inflorescenceunknown. New shoots Jul.● 2000–2300 m. W Yunnan.25. Yushania baishanzuensis Z. P. Wang & G. H. Ye, J.Nanjing Univ., Nat. Sci. Ed. 1983(3): 494. 1983.百 山 祖 玉 山 竹 bai shan zu yu shan zhuRhizome neck ca. 25 cm; internodes solid. Culms 1.5–2m, to 0.5 cm in diam.; internodes terete, ca. 19 cm, initiallysparsely setose, thickly white powdery below nodes; wall 1.5–2mm thick; nodes with weakly prominent supra-nodal ridge;sheath scar weakly prominent. Branches 3 to many. Culmsheaths gradually deciduous, 1/2–2/3 as long as internodes, abaxiallyor marginally sparsely white setose; auricles absent orobscure; oral setae absent or few, erect, purple; ligule convex ortruncate, ca. 1 mm, ciliate; blade erect, linear or conical,glabrous. Leaves 3–5 per ultimate branch; sheath glabrous, initiallywhite powdery; auricles absent or obscure; oral setae 5–8,erect, 0.5–1 mm; ligule truncate or convex, ca. 0.5 mm, glabrous;blade linear-lanceolate, 6–14 × 0.7–1.2 cm, glabrous orabaxially hairy at base, secondary veins 4-paired, transverseveins slightly obscure, one margin serrulate, other marginsmooth. Inflorescence unknown. New shoots Apr–May.● 1000–1100 m. S Zhejiang.26. Yushania farcticaulis T. P. Yi, J. Bamboo Res. 5(1): 24.1986.独 龙 江 玉 山 竹 du long jiang yu shan zhuRhizome neck to 70 cm; internodes solid. Culms 4–7 m,1–2 cm in diam.; internodes purple spotted when dry, terete,32–45 cm, solid or nearly so, glabrous; supra-nodal ridge levelor weakly prominent; sheath scar prominent, initially yellowbrownsetose. Branches many. Culm sheaths persistent, triangularlynarrowly rounded, 1/2–3/5 as long as internodes,leathery, prominently longitudinally ribbed, densely brown todark brown setose, margins densely yellow-brown setulose;auricles absent; oral setae few, gradually deciduous, erect, yellow,2–6 mm; ligule truncate or arcuate, ca. 1 mm, initiallyciliate, later slightly fissured; blade reflexed, linear-lanceolate,glabrous, margins serrulate. Leaves 4–6 per ultimate branch;sheaths sometimes gray-brown setose; auricles absent; oralsetae few, erect, brown, 3–5 mm; ligule truncate, glabrous;blade lanceolate, 5–15 × 0.6–1.2 cm, abaxially sparsely graypubescent, secondary veins 3- or 4-paired, transverse veinsdistinct, base cuneate, margins spinescent-serrulate, apex acuminate.Inflorescence unknown. New shoots Aug.● 1900–2000 m. W Yunnan.27. Yushania levigata T. P. Yi, J. Bamboo Res. 5(1): 27. 1986.光 亮 玉 山 竹 guang liang yu shan zhuRhizome neck to 62 cm; internodes solid. Culms 2–4.5 m,1–3 cm in diam.; internodes terete, 16–40 cm, initially whitepowdery, glabrous, nearly solid; supra-nodal ridges level;sheath scar prominent. Branches 3–15 per node, erect or deflexed.Culm sheaths persistent, dark purple or with light yellowstripes, narrowly rounded-triangular or narrowly triangular,2/5–1/2 as long as internodes, cartilaginous, glabrous or basallyyellow-brown setulose, margins initially setulose; auricles andoral setae absent; ligule truncate or convex, glabrous; bladereflexed, linear-lanceolate, glabrous, margins initially serrulate.Leaves 3–5 per ultimate branch; sheath margins glabrous orinitially ciliate; auricles absent; oral setae present or absent;ligule truncate, glabrous; blade lanceolate or linear-lanceolate,3–12.5 × 0.7–1.2 cm, glabrous, secondary veins 3–5-paired,transverse veins distinct, base cuneate, one margin spinescentserrulate,other margin smooth. Inflorescence a panicle or raceme.Spikelets 2–12, dark purple, 2.2–7 cm; rachilla 3–4 mm,margins densely ciliolate, apically setulose and swollen; florets4–9, terminal one sterile. Lemma mucronate or acuminate atapex; palea 2-keeled, keels ciliolate, apically bifid. Ovary ovoid;style 1. Caryopsis purple, oblong, with persistent style base.New shoots Sep.● 2300–3000 m. SW Yunnan.