1. Morphological characteristics: Koelreuteria paniculata is a deciduous shrub or tree of Koelreuteria of Sapindaceae. Its bark is thick and grayish brown or grayish black. Leaves opposite or alternate, ovate. When it blooms, it is a cymose panicle, orange-red. It usually blooms between June and August. This kind of fruit is a conical capsule. The fruiting period is between September and 10.

2, growth habits: Luan tree likes the sun very much and has a slight shade tolerance. Cold-tolerant, not waterlogging-tolerant. Therefore, attention should be paid to the plot when planting, and drainage should be convenient. It can endure the low temperature of MINUS 25 degrees and has strong wind resistance. There is almost no need to worry during the management period, as long as the soil does not accumulate water, it can flourish.

3. Distribution: Koelreuteria paniculata is distributed all over the world, and China is mainly distributed in northern and central provinces, especially in East China and Central China. The production bases are mainly concentrated in Anhui, Jiangxi, Jiangsu, Zhejiang and Henan.