| Author | Title | Journal/publisher | Literature ref. no. |
| Troupin, G. (1978) | Crassulaceae | Flore du Rwanda Spermatophytes Volume I 334-340 | 1431 |
Note that the process of capturing references from species to the literature and the reverse may be incomplete.
| Species found: 7 |
| Crassula schimperi subsp. schimperi |
| Crassula vaginata |
| Kalanchoe crenata |
| Kalanchoe glaucescens |
| Kalanchoe marmorata |
| Sedum ruwenzoriense |
| Umbilicus botryoides |