Aesculus wangii

About

Aesculus assamica, the Assam horse-chestnut, is a widespread species of flowering plant in the genus Aesculus in the family Sapindaceae. It is native to warm temperate to subtropical areas of the eastern Himalayas from Sikkim through Bhutan and Assam to Arunachal Pradesh, and southwestern and southern China, Bangladesh, and mainland southeast Asia, except Cambodia and Peninsular Malaysia.

Summary from Wikipedia