Leaflet blades abaxially pilose basally on veins, adaxially puberulous basally on midvein, margin entire or 2-dentate. Pedicel puberulous. Sepals abaxially not winged.

• 小叶叶片在脉上基部背面具柔毛的，正面被微柔毛基部在中脉上，边缘全缘或2具牙齿的。花梗被微柔毛。萼片背面的无翅。