Simbiano, F.J., Couch, C., Magassouba, S., van der Burgt, X.M., Plummer, J. and Cheek, M. 2025. Keetia tinka & K. kounounkan sp. nov. (Rubiaceae - Vanguerieae) new threatened forest climbers and shrubs of sandstone plateaux of the Republic of Guinea. Webbia. 80, 2 (Nov. 2025), 183–195. DOI:https://doi.org/10.36253/jopt-19152.