Quintanar, Alejandro, David J. Harris, Diosdado Nguema, and Patricia Barberá. “Notes on Cauliflory, Sexual Dimorphism and Biogeography in Drypetes (Putranjivaceae, Malpighiales) and a Taxonomic Treatment for D. gabonensis and Two New Cauliflorous Threatened Species from Central Africa, D. aphanes sp. nov. And D. cauta sp. nov”. European Journal of Taxonomy 888, no. 1 (August 18, 2023): 175–202. Accessed April 24, 2026. https://ejt.sandbox.publicknowledgeproject.org/index.php/ejt/article/view/2241.