Genus: Thamnosma 

Life > eukaryotes > Archaeoplastida > Chloroplastida > Charophyta > Streptophytina > Plantae (land plants) > Tracheophyta (vascular plants) > Euphyllophyta > Lignophyta (woody plants) > Spermatophyta (seed plants) > Angiospermae (flowering plants) > Eudicotyledons > Order: Sapindales > Family: Rutaceae

About six species, native to America, Sokotra and Africa, with two species native to southern Africa.

Species native to southern Africa

List from Plants of Southern Africa - an Online Checklist (SANBI) and Flora of Zimbabwe.