| Name | Macromitrium powellii Mitten |
| Authorship | Mitten |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Macromitrium |
| Citation | 1868 J. Linn. Soc., Bot. 10: 168 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Macromitrium powellii Mitten |
| Identification made in | [no date] (1) |
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