2; see text Millettia leucantha Kurz (1873) Millettia leucantha or sathon is a species of plant in the legume family, Fabaceae.

It is a perennial flowering tree native to Indo-China – Cambodia, Laos, Myanmar, Thailand, and Vietnam – as well as Bangladesh and southern Yunnan province in China.

[2] It is the provincial tree and flower of Khorat or Nakhon Ratchasima Province in Isaan (Thailand), where it is known as sathon (สาธร).

buteoides (aka Imbralyx leucanthus var.

[3] This sauce used for cooking is the only OTOP product made from the sathon tree.