Gonostemon

Gonostemon is a genus of plants in the Apocynaceae, first described as a genus in 1812.

Over 70 names have been published for species assigned to Gonostemon, most of the regarded as "unresolved," i.e., of uncertain affiliation. Only the following 3 are listed as "accepted" by the Plant List maintained by Kew Gardens in London

1. Gonostemon fissirostris (Jacq.) P.V. Heath - southern Africa
2. Gonostemon grandiflorus (N.E. Br.) Fisch. & C.A. Mey. ex C.A. Mey. - southern Africa
3. Gonostemon rubiginosa (Nel) P.V. Heath - Little Namaqualand

moved to another genus (Stapelia)

1. G. giganteus now Stapelia gigantea
2. G. giganteus var. nobilis now Stapelia nobilis
3. G. macowanii now Stapelia macowanii
4. G. parvulus now Stapelia parvula
5. G. pulvinatus now Stapelia pulvinata
6. G. schinzii var. angolensis now Stapelia schinzii var. angolensis