| Name | Macromitrium palmense R. S. Williams |
| Authorship | R. S. Williams |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Macromitrium |
| Citation | 1914 Torreya 14: 25 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Macromitrium palmense R. S. Williams |
| Identification made in | [no date] (1) |