| Name | Mnium marginatum (Dickson ex Withering) P. Beauvois |
| Authorship | (Dickson ex Withering) P. Beauvois |
| Rank | Species |
| Placed in | Mnium Hedwig |
| Contains | Mnium marginatum var. riparium (Mitten) Husnot |
| Citation | 1805 Prodr. Aethéogam. 75 |
| Holdings | 102 Specimens held in the Harvard University Herbaria identified as Mnium marginatum (Dickson ex Withering) P. Beauvois |
| Identification made in | [no date] (101), 2018 (1) |