| Name | Macromitrium megalocladon M. Fleischer |
| Authorship | M. Fleischer |
| Rank | Species |
| NomenclaturalStatus | Unknown |
| Placed in | Macromitrium |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Macromitrium megalocladon M. Fleischer |
| Identification made in | [no date] (1), 1992 (1) |