A new classification system and taxonomic synopsis for Malpighiaceae (Malpighiales, Rosids) based on molecular phylogenetics, morphology, palynology, and chemistry Author de Almeida, Rafael F. 0000-0002-9562-9287 Universidade Estadual de Goiás, Campus Sudoeste, Quirinópolis, Goiás, Brazil & Royal Botanical Gardens, Kew, Richmond, UK Author de Morais, Isa L. 0000-0001-8748-9723 Universidade Estadual de Goiás, Campus Sudoeste, Quirinópolis, Goiás, Brazil Author Alves-Silva, Thais https://orcid.org/0009-0001-0760-6019 Universidade Estadual de Goiás, Campus Sudoeste, Quirinópolis, Goiás, Brazil Author Antonio-Domingues, Higor 0000-0001-9405-1930 Royal Botanical Gardens, Kew, Richmond, UK Author Pellegrini, Marco O. O. 0000-0002-8783-1362 Royal Botanical Gardens, Kew, Richmond, UK text PhytoKeys 2024 2024-05-22 242 69 138 journal article 10.3897/phytokeys.242.117469 2.2. Mcvaughieae R. F. Almeida trib. nov. Type genus. Mcvaughia W. R. Anderson. Diagnosis. Trees, shrubs to subshrubs; thyrses, cincinni 1–7 - flowered, bracteoles 1 - glandular; pollen 4 - zonocolporate (3 - zonocolporate in Glandonia ); drupes, epicarp striated, presence of linear 1, 3 - diarylpropanoids, and the absence of dithiols, indoles and derivatives. Notes. Mcvaughieae currently comprises three accepted genera, Burdachia , Glandonia , and Mcvaughia , and 12 species (five threatened species; Suppl. material 1 ) of trees, shrubs to subshrubs endemic to the Amazon rainforests and seasonally dry tropical forests of South America ( POWO 2024 ).