Leaves simple;leaf blade ovate to narrowly triangular, without foliar nectaries, base cordate, margin entire or crenate-dentate, apex acuminate.

• 单叶叶片卵形到狭三角形，没有叶蜜腺，基部心形，边缘全缘或具圆齿具牙齿的，先端渐尖。