Razafimandimbisonia  Razafimandimbisonia is a genus of flowering plants in the family Rubiaceae. It is endemic to Madagascar. The genus "Alberta" was shown to be paraphyletic in a phylogenetic analysis of the tribe Alberteae. The type species "Alberta magna" is set apart from the Malagasy "Alberta" species. A new genus, "Razafimandimbisonia", was proposed to accommodate these Malagasy species. It is named in honour of the botanist Sylvain G. Razafimandimbison.