| Name | Mnium orthorrhynchum Bridel |
| Authorship | Bridel |
| Rank | Species |
| Placed in | Mnium Hedwig |
| Citation | 1817 Muscol. Recent. Suppl. 3: 45 |
| Holdings | 8 Specimens held in the Harvard University Herbaria identified as Mnium orthorrhynchum Bridel |
| Identification made in | [no date] (8) |