Leaves petiolate;stipules filiform;leaf blade papery, basal veins usually 3, usually with linear appendages at or near base, margin serrate, serrulate, or crenate.

• 叶具叶柄托叶丝状叶片纸质，通常基部脉3，通常具线形的附属物在或近基部，边缘有锯齿，有细锯齿，或具圆齿的。