Deciduous trees, up to 27 m high; The crown of the tree is huge and spherical. Bark is grayish brown, with irregular flake peeling when it is old; Branchlets are stout, chestnut brown and smooth and hairless. Palmately compound leaves are opposite, with 5-7 leaflets, obovate-oblong, 8-16 cm long, tapering at the apex, wedge-shaped at the base, with blunt-pointed serrations at the edge, and only sparsely pilose on the veins below. Flowers are small, white, erect and dense panicles, nearly cylindrical. The capsule is obovate, with a flat and slightly concave top, brown-yellow, rough and spineless, with a diameter of 3 ~ 4 cm, containing1~ 2 seeds, shaped like chestnut and a large hilum. The flowering period is May, and the fruiting period is September ~1October.