The monotypic genus Ctenophrynium K. Schum. was described to accommodate a sp originally described as Phrynium unilaterale Baker which was based on a plant cultivated at Kew, believed to have originated from Madagascar. The specimen can be equated with material from Brazil, that is now referred to the genus Saranthe (Regel & Körn.) Eichler, which comprises ca. 10 spp, all from South America. It is assumed that the "Madagascar" origin of the cultivated plant was recorded in error, and we exclude the species from the Madagascar Catalogue. Unfortunately, the correct name for this Brazilian sp is S. madagascariensis (Benth.) K.Schum. since the combination Saranthe unilateralis is occupied by a different sp, and Myrosma madagascariensis Benth. & Hook. f. was published as a new name for Phrynium unilaterale Baker by Bentham & Hooker.