Acer truncatum (Acer truncatum): Acer truncatum is a small deciduous tree, with a height of 7 cm ~ 8 cm, umbrella-shaped or spherical crown, slender shoots, purple or grayish purple. Leaf blade diameter is 6 cm ~ 10 cm, palmately parted 5 cm ~ 7 cm, usually 7-parted, split, lobes oval to lanceolate, leaf margin with fine serrations, only tufts of hair below leaf axils, mixed flowers and purplish red. The fruit is spherical, Zhang Kaicheng right angle to obtuse angle, purplish red when young, and brownish yellow when mature. The flowering period is in May and the fruiting period is in September. Mainly distributed in East China and Central China.