Oguri, E., Tagane, S., Dang, V.-S., Yang, C.-J., Toyama, H., Tran, H., Murakami, N. & Yahara, T. (2019) A new species of Gynochthodes (Rubiaceae), G. honbaensis from Hon Ba Nature Researve, southern Vietnam. Phytotaxa 406 (3): 213–217. https://doi.org/10.11646/phytotaxa.406.3.8