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川山橙
,→形态特征
*分布区域；[[贵州]]、[[四川]]南部和[[东南]]部
==形态特征==
[[File:Timg123BBKBJK 川山橙00000.jpg|缩略图|居右|[https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=16032758486381603276276387&di=f10fd74ddfb483eb3124546ac77cc5a5dca406a94cf41958e1386163195ac9a5&imgtype=0&src=http%3A%2F%2Fimg2Ff.familydoctorhiphotos.baidu.com.cn%2Fku2Fbaike%2Fs%3D220%2Fmedicine2Fsign%2F201412303D1e4c6b9eb74543a9f11bfdce2e168a7b%2F2014123005133054486752F8b13632762d0f7033cda20b608fa513d2697c574.jpg原图链接][https://image.baidu.com/search/detail?ct=503316480&z=0&ipn=d&word=%E5%B7%9D%E5%B1%B1%E6%A9%99&step_word=&hs=0&pn=08&spn=0&di=66053030&pi=0&rn=1&tn=baiduimagedetail&is=0%2C0&istype=0&ie=utf-8&oe=utf-8&in=&cl=2&lm=-1&st=undefined&cs=33569056422921510474%2C20936325652C3376696803&os=10257679952587769775%2C35532785072C1891413451&simid=34626397293407158888%2C6129951472C365066794&adpicid=0&lpn=0&ln=497&fr=&fmq=1603265762028_R1603266173259_R&fm=&ic=undefined&s=undefined&hd=undefined&latest=undefined©right=undefined&se=&sme=&tab=0&width=undefined&height=undefined&face=undefined&ist=&jit=&cg=&bdtype=015&oriquery=&objurl=http%3A%2F%2Fimg2Ff.hiphotos.familydoctorbaidu.com.cn%2Fku2Fbaike%2Fs%3D220%2Fmedicine2Fsign%2F201412303D1e4c6b9eb74543a9f11bfdce2e168a7b%2F2014123005133054486752F8b13632762d0f7033cda20b608fa513d2697c574.jpg&fromurl=ippr_z2C%24qAzdH3FAzdH3Fyrh_z24qAzdH3FAzdH3Fkwthj_z%26e3Buw4tsy15vp56_z26e3Bkwt17_z%26e3Bv54_z26e3Bv54AzdH3FetjoAzdH3F0lc9bc_z%26e3BvgAzdH3Fpv4_0c026e3Bip4&gsm=19&rpstart=0&rpnum=0&islist=&querylist=&force=undefined来自 百度 的图片]]]
粗壮木质[[藤本]]，长约6米，具乳汁；小枝、幼叶、[[叶柄]]、[[花序]]密被短绒毛；茎皮黄绿色。叶近革质，椭圆形或长圆形，稀椭圆状披针形，长7~15厘米，宽4~5厘米，顶端渐尖，基部楔形或钝；叶面具光泽，被毛脱落，叶背中脉明显，被短柔毛；[[叶柄]]长约5毫米。