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. Author Quintanar, Alejandro Herbarium MA, Unidad de Herbarios, Real Jardín Botánico de Madrid CSIC, 28014 Madrid, Spain. quintanar@rjb.csic.es Author Harris, David J. Royal Botanic Garden Edinburgh, Inverleith Row, Edinburgh EH 3 5 LR, United Kingdom. DHarris@rbge.org.uk Author Nguema, Diosdado TROPIC-FOREST, Ancien Sobraga St., No. 3246, 4474 Libreville, Gabon. ddnguema@hotmail.com Author Barberá, Patricia Africa and Madagascar Department, Missouri Botanical Garden, 4344 Shaw Blvd., St. Louis, Missouri 63110, United States of America. pbarbera@mobot.org text European Journal of Taxonomy 2023 2023-08-18 888 175 202 https://europeanjournaloftaxonomy.eu/index.php/ejt/article/view/2241 journal article 10.5852/ejt.2023.888.2241 2118-9773 8269439 Drypetes sect. Sphragidia (Thwaites) Pax & K.Hoffm. Das Pflanzenreich 147, 15 (Heft 81): 234 ( Pax & Hoffmann 1922 ). Basionym Sphragidia Thwaites , Hooker’s journal of botany and Kew garden miscellany 7: 269 ( Thwaites 1855 ) . – Type : Sphragidia zeylanica Thwaites ( D. longifolia (Blume) Pax & K.Hoffm. ).