Louis, J. & Leonard, J. (1948) Olacaceae Flore du Congo Belge et du Ruanda-Urundi Volume I 249-278
| Species | Content | |
| afra Sond. var. afra | Description, Image | |
| americana L. var. microphylla Welw. ex Oliv. | Description, Image | |
| americana L var. americana | Description |