| Name | Atrichum polycarpum (Müller Halle) Mitten |
| Authorship | (Müller Halle) Mitten |
| Rank | Species |
| Placed in | Atrichum |
| Citation | 1869 J. Linn. Soc., Bot. 12: 604 |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Atrichum polycarpum (Müller Halle) Mitten |
| Identification made in | [no date] (4) |