Where does the snowflake tree grow?

There is a "snowflake tree" in Shuikou Mountain, Dongkou County, Hunan Province, with a height of about 10 meter and a waist circumference of 1.5 meter. Its leaves are like camphor trees and poplars, its crown diameter exceeds 10 m, and it has white flowers. This kind of tree will bloom when it snows in winter, and it will bloom several times a year when it snows. The reason remains to be studied.