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落叶灌木或小乔木,高2—5米;树皮灰色,不裂;小枝粗壮,密被黄褐色绒毛,有少数红褐色圆形皮孔,芽密被褐黄色绒毛。叶互生,连叶柄长14—22厘米,叶柄长4—8厘米,奇数羽状复叶,有小叶3—4(—5)对,叶轴具窄翅,每对小叶间距1.5—4.5厘米,叶轴与叶柄密被黄褐色绒毛;小叶对生,无柄或几无柄,生于叶轴上部的较大,卵状椭圆形或椭圆形,长6—12厘米,宽4—7厘米,先端急尖,基部不对称,宽楔形或圆形,顶生小叶的基部渐窄成翅柄,上部的1(—2)对小叶基部下侧常与叶轴之翅
Deciduous shrubs or small trees, 2-5 m tall; bark gray, not split; branchlets thick, densely yellowish brown tomentose, with a few reddish brown round leather holes, buds densely brownish yellow tomentose. Leaves alternate, with petiole 14-22 cm long, petiole 4-8 cm long, odd pinnately compound leaflets 3-4 (-5) pairs of lobes with narrow wings, each pair of leaflet spacing 1.5-4.5 cm, Leaf blade and petiole densely yellowish brown tomentose; leaflets opposite, sessile or sessile, arising on upper part of leaf blade larger, ovate-elliptic or elliptic, 6-12 cm long, 4-7 cm wide, Apex acute, basally asymmetric, broadly cuneate or rounded, base of terminal leaflets tapering to winged, upper 1 (-2) on the underside of the base of leaflets often associated with the wings of the leaf shaft