1、 Leaf difference

Ash tree has pinnately compound leaves, 15 to 25 cm long, 4 to 6 cm long petiole, straight leaf axis, 5 to 7 leaflets, hard paper, oval and obovate leaves, oblong to lanceolate, about 3 to 10 cm long and about 2 to 4 cm wide. The apex of the leaves is sharp, the base is blunt round or wedge-shaped, and the leaf margin has neat serrations

The leaves of tassel are leathery or thin leathery, oblong, oval or round, about 3 to 12 cm long and about 2 to 6.5 cm wide. The apex of the leaves is blunt, sometimes concave or sharp, the base is round or wide wedge or wedge-shaped, the leaves are complete or have small serrations, and the leaf margin is slightly inverted

2、 Flower difference

Ash tree panicles terminal or axillary on branches, 8 to 10 cm long, peduncle 2 to 4 cm long, dense male flowers, small calyx, bell shaped, about 1 mm long, without corolla

Fimbriate panicle of tassel tree, 3 to 12 cm long, terminal at the branch end, flowers 1.2 to 2.5 cm long, corolla white, 4-parted, lobes linear lanceolate