| 1. | Leaves bipinnate , 10 - 25 cm long , usually with 2 pairs of pinnae , rachis often ending in a tendril ; pinnae with 2 - 4pairs of leaflets and terminal tendrils ; leaflets opposite , oblong or long obovate , 3 - 9cm long , 1 . 5 - 4cm wide , apex obtuse or emarginated , base slightly oblique
叶为二回羽状复叶，长10 - 25厘米，叶轴先端常变为?须，羽片通常2对，顶生1对羽片变为?须；小叶2 - 4对，对生，长椭圆形或长倒卵形，长3 - 9厘米，宽1 . 5 - 4厘米，先端钝、微凹，基部略偏斜。 |
