1.APD 2007+: African Plant Database (version 4.0.0). – Conservatoire et Jardin botaniques de la Ville de Genève & South African National Biodiversity Institute, Pretoria – https://africanplantdatabase.ch/en
=Ceraria H.Pearson & Stephensin Ann. S. African Mus. 9: 32. 1912 syn. sec. APD 2007+2
2.APD 2007+: African Plant Database (version 4.0.0). – Conservatoire et Jardin botaniques de la Ville de Genève & South African National Biodiversity Institute, Pretoria – https://africanplantdatabase.ch/en, 3. Phillips (1951)