Aesculus chinensis

About

Aesculus chinensis, the Chinese horse chestnut or Chinese buckeye, is a deciduous temperate tree species in the genus Aesculus found across China. It was first successfully introduced to Britain in 1912 by plant collector William Purdom, who collected six young plants from the grounds of a temple in the western hills of Beijing, and brought them back to Veitch's Nursery in Coombe Hill near London. Purdom's correspondence regarding this event are held in the archives of the Arnold Arboretum. One plant was sent to the Royal Botanic Gardens Kew and two to the Arnold Arboretum in Boston. The original tree at Kew no longer exists but a young tree grafted from the original now grows in the Rhododendron Dell.

Summary from Wikipedia