Sobrado, Sandra V., João A.M. do Carmo, André O. Simões, and Roberto M. Salas. “Two New Species of Psyllocarpus (Spermacoceae, Rubiaceae) from the State of Minas Gerais, Southeastern Brazil”. European Journal of Taxonomy 806, no. 1 (March 30, 2022): 161–176. Accessed November 25, 2024. https://europeanjournaloftaxonomy.eu/index.php/ejt/article/view/1713.