| Author | Title | Journal/publisher | Literature ref. no. |
| Williamson, G. (1977) | The Orchids of South Central Africa | J.M. Dent & Sons Ltd., London. | 984 |
Note that the process of capturing references from species to the literature and the reverse may be incomplete.
| Species found: 8 |
| Ansellia africana |
| Bonatea steudneri |
| Eulophia leachii |
| Eulophia livingstoneana |
| Eulophia speciosa |
| Habenaria kilimanjari |
| Habenaria subarmata |
| Orthochilus walleri |