葡萄科酸蔹藤属二新种

西藏酸蔹藤 新种 图1 Ampelocissus xizangensis C.L.Li,sp.nov. A.latifolia auct.non.(Roxb.) Planch.1887:W.T.Wang in Act.Phytotax.Sin.17(3):91.1979,in clavi et in C.Y.Wu,Fl.Xizang.3;225,fig.95:1～2.1986. Affinis A.latifoliae(Roxb.)Planch,a qua foliorum laminis non lobatis,margine regu-latim acute serrulatis,supra subtusque pubescentibus differt. Frutex scandens.Ramuli teretes,striati,glabri vel parce arachnoidei;cirrhi 2-furcati.Folia simplicia,late ovata,c.23 cm longa,c.24 cm lata,apice obtusa,basi cordata,sinubasali arcto,margine acute serrulata,supra viridia,pubescentia,subtus viridula,parce