Petersianthus is a genus of woody plant in the Lecythidaceae family first described as a genus in 1865 under the name Petersia.Welwitsch, Friedrich Martin Josef. 1865. ex Bentham, George, Genera plantarum :ad exemplaria imprimis in Herberiis Kewensibus servata definita 1: 721. in LatinTropicos, Petersia Welw. ex Benth. This turned out to be an illegitimate homonym, meaning that it had already been used by someone else to refer to a very different plant.Klotzsch, Johann Friedrich. 1861. Naturwissenschaftliche Reise nach Mossambique 168Tropicos, Petersia Klotzsch So the name of these species in the Lecythidaceae was changed to Petersianthus.Tropicos, Petersianthus Merr. It is native to the Philippines and to parts of Africa.Kew World Checklist of Selected Plant Families The following two species belong to this genus, with the basionyms of both taxa belonging to what is known today as the family Combretaceae.
species (syn. Combretum macrocarpum ) - Guinea, Ivory Coast, Cameroon, Congo Republic, Democratic Republic of the Congo, Cabinda, Gabon, Angola Petersianthus quadrialatus (syn. Terminalia quadrialata ) - Philippines
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