| Name | Grimmia unicolor Hooker |
| Authorship | Hooker |
| Rank | Species |
| Placed in | Grimmia |
| Citation | 1825 Scott. Crypt. Fl. 3: 123 |
| Holdings | 25 Specimens held in the Harvard University Herbaria identified as Grimmia unicolor Hooker |
| Identification made in | [no date] (22), 2013 (1), 2017 (2) |
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