Unifoliate opposite, bottle green, circle of egg state regulations or egg form, tip gradually pointed, base the ministry is perfectly round, vein by base ministry 3, whole reason, have short power.

• 单叶对生,深绿色,卵状矩圆形或卵形,先端渐尖,基部浑圆,叶脉由基部三出,全缘,有短柄。