Medicinal source:

Junsongduang, A., Balslev, H., Inta, A., Jampeetong, A. & Wangpakapattanawong, P. (2013). Medicinal Plants from Swidden Fallows and Sacred Forest of the Karen and the Lawa in Thailand. Journal of Ethnobiology and Ethnomedicine. 9: 44. [MPNS is grateful to Patricia van Eijndthoven for providing the data from this reference.]