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CCDB → Bryophytes → Polytrichaceae → Oligotrichum
| Taxon name | Status | Median (n) |
| Oligotrichum aligerum Mitt. | Accepted | 7 |
| Oligotrichum hercynicum (Hedw.) Lam. & DC. | Accepted | 7 |
| Oligotrichum parallelum (Mitt.) Kindb. | Accepted | 7 |
| Oligotrichum aligerum None | Synonym of Oligotrichum aligerum Mitt. | 7 |
| Oligotrichum japonicum Cardot | Synonym of Oligotrichum parallelum (Mitt.) Kindb. | 7 |
| Oligotrichum parallelum None | Synonym of Oligotrichum parallelum (Mitt.) Kindb. | 7 |