| Name | Macromitrium hamatum E. B. Bartram | 
| Authorship | E. B. Bartram | 
| Rank | Species | 
| NomenclaturalStatus | NomLeg | 
| Placed in | Macromitrium | 
| Citation | 1945 Bryologist 48: 117 | 
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Macromitrium hamatum E. B. Bartram | 
| Identification made in | [no date] (2) | 
