Thomas, P., Soulivanh Lanorsavanh, Sounthone Ketphanh, Bouakhaykhone Svengsuksa, and Vichith Lamxay. 2007. “NEW RECORDS OF ANGIOSPERMS AND PTERIDOPHYTES IN THE FLORA OF LAOS”. Edinburgh Journal of Botany 64 (2): 225-51. https://doi.org/10.1017/S0960428607000923.