CCDB → Angiosperms → Rubiaceae → Conostomium
| Taxon name | Status | Median (n) |
| Conostomium natalense (Hochst.) Bremek. | Accepted | 9 |
| Conostomium quadrangulare (Rendle) Cufod. | Accepted | 9 |
| Conostomium kenyense Bremek. | Synonym of Conostomium longitubum (Beck) Cufod. | 18 |
| Conostomium natalense (Hochst) Bremek. | Synonym of Conostomium natalense (Hochst.) Bremek. | 9 |