Koelreuteria Laxm.
Koelreuteria is a small genus with three species in southeastern Asia (China and Japan) (Xia & Gadek 2007). One species, K. paniculata Laxm., is widely cultivated as an ornamental tree or for timber. It has been recorded as an escape in Belgium.
References
Meyer F.G. (1976) A revision of the genus Koelreuteria (Sapindaceae). J. Arnold Arbor. 57(2): 129-166. [available online at: https://www.biodiversitylibrary.org/item/41448#page/137/mode/1up]
Xia N.H. & Gadek P.A. (2007) Sapindaceae. In: Wu Z.Y. & Raven P.H. (eds.), Flora of China, vol. 12. Beijing: Science Press, and St. Louis: Missouri Botanical Garden Press: 5-24 [available online at: http://flora.huh.harvard.edu/china/mss/volume12/Sapindaceae.pdf]
Taxonomic name: