Revision of the genus Wielandia (Euphorbiaceae-Phyllanthoideae)

The monotypic genus Wielandia (Euphorbiaceae-Phyllanthoideae), long considered to be endemic to the Seychelles, but later found also in Madagascar, and recently in the Comoro Islands, is revised. Wielandia elegans var. perrieri from Madagascar could not be confirmed as a separate taxon. Showing no adaptations to long-distance dispersal, Wielandia elegans presents another example of a species with a relic distribution in the Indian Ocean.