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 2.9. 9. Mionandra Griseb. , Abh. Königl. Ges. Wiss. Göttingen 19: 101. 1874 . = Brittonella Rusby , Bull. Torrey Bot. Club 20: 429. 1893. Type species: Brittonella pilosa Rusby [= Mionandra camareoides Griseb. ]. = Cordobia Nied. , Verzeichnis Vorles. Konigl. Akad. Braunsberg 1912–13: 41. 1912. Type species: Cordobia argentea (Griseb.) Nied. [≡ Mionandra argentea Griseb. ]. = Gallardoa Hicken , Physis ( Buenos Aires ) 2: 101. 1916. Type species: Gallardoa fischeri Hicken [≡ Mionandra fischeri (Hicken) R. F. Almeida ] Type species. Mionandra camareoides Griseb. Notes. Mionandra comprises four currently accepted species (one threatened species; Suppl. material 1 ) of shrubs endemic to savannas and seasonally dry tropical forests of Argentina , Bolivia , and Paraguay , South America ( Almeida et al. 2023 b ). For an identification key for all species of Mionandra , see Almeida et al. (2023 b ).