Status of the Genera Colpoon, Osyris and Rhoiacarpos in South Africa
Background: The taxonomic and phylogenetic status of Colpoon, Osyris and Rhoiacarpos (Santalaceae, Osyrideae) is reviewed.
Objectives: To resolve confusion regarding whether Colpoon is deserving of generic status separate from Osyris.
Methods: Existing morphological information was examined for the three genera as well as previously published molecular phylogenies.
Results: From both morphological and phylogenetic perspectives, Colpoon is distinct from Osyris. The status of Rhoiacarpos was not contentious and this genus is also easily differentiated from the other two genera in Osyrideae.
Conclusions: Colpoon and Osyris are not congeneric; therefore, floras, databases and herbarium collections should recognise these as distinct taxa.