| Name | Macromitrium homalacron Müller Halle |
| Authorship | Müller Halle |
| Rank | Species |
| NomenclaturalStatus | Unknown |
| Placed in | Macromitrium |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Macromitrium homalacron Müller Halle |
| Identification made in | [no date] (2) |