Leaflet blades abaxially pilose on basal veins, adaxially puberulous on basal midvein, margin sparsely dentate. Pedicel puberulous. Sepals abaxially with a ca. 1 mm wide longitudinal wing on midvein.

• 小叶叶片背面具柔毛在基部脉上，正面被微柔毛在基部中脉，边缘疏生具牙齿的。花梗被微柔毛。萼片背面具一约1毫米宽纵向的翅在中脉上。