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CCDB → Angiosperms → Compositae → Monoculus
| Taxon name | Status | Median (n) |
| Monoculus hyoseroides (DC.) B. Nord. | Accepted | 8 |
| Monoculus monstrosus (Burm.) B. Nord. | Accepted | 8 |
| Osteospermum hyoseroides (DC.) Norl. | Synonym of Monoculus hyoseroides (DC.) B. Nord. | 8 |
| Osteospermum clandestinum (Less.) Norl. | Synonym of Monoculus monstrosus (Burm.) B. Nord. | 8 |
| Tripteris clandestina Less. | Synonym of Monoculus monstrosus (Burm.) B. Nord. | 8 |