小喬木；幼(you)枝細(xi)長。葉近革質，

橢圓形(xing)(xing)或(huo)橢圓狀(zhuang)披(pi)針形(xing)(xing)，先(xian)(xian)端(duan)短(duan)(duan)漸尖，基部(bu)寬楔形(xing)(xing)或(huo)近圓形(xing)(xing)，兩面(mian)無(wu)毛；側脈8-10對；葉柄長(chang)7-10毫(hao)米。雄花(hua)(hua)(hua)序長(chang)1-3厘米，無(wu)毛，著花(hua)(hua)(hua)3-20，稀1-2，小花(hua)(hua)(hua)長(chang)4-5毫(hao)米；花(hua)(hua)(hua)被(bei)(bei)裂片3-4，三角狀(zhuang)卵(luan)(luan)形(xing)(xing)，外(wai)面(mian)密被(bei)(bei)灰褐色絨(rong)(rong)毛；花(hua)(hua)(hua)藥9-12枚，線形(xing)(xing)，長(chang)約雄蕊柱(zhu)的(de)(de)一半；雌花(hua)(hua)(hua)序較雄花(hua)(hua)(hua)序為長(chang)；總梗粗壯、著花(hua)(hua)(hua)1-2朵；花(hua)(hua)(hua)長(chang)6毫(hao)米，直徑約4毫(hao)米；花(hua)(hua)(hua)被(bei)(bei)裂片3，外(wai)面(mian)密被(bei)(bei)微絨(rong)(rong)毛；花(hua)(hua)(hua)梗長(chang)于雌花(hua)(hua)(hua)；小苞片著生(sheng)在花(hua)(hua)(hua)被(bei)(bei)基部(bu)，脫落后殘存(cun)通(tong)常(chang)為環形(xing)(xing)的(de)(de)疤痕(hen)；子(zi)房(fang)橢圓形(xing)(xing)，外(wai)面(mian)密被(bei)(bei)銹色絨(rong)(rong)毛，花(hua)(hua)(hua)柱(zhu)極(ji)短(duan)(duan)，柱(zhu)頭先(xian)(xian)端(duan)2裂。果通(tong)常(chang)單生(sheng)，具(ju)短(duan)(duan)柄，有時具(ju)殘存(cun)的(de)(de)花(hua)(hua)(hua)被(bei)(bei)片；假(jia)種皮紅色，至基部(bu)撕裂；種子(zi)卵(luan)(luan)珠形(xing)(xing)；子(zi)葉短(duan)(duan)，蜷曲，基部(bu)連(lian)合