| Name | Groutiella tumidula (Mitten) Vitt |
| Authorship | (Mitten) Vitt |
| Rank | Species |
| Placed in | Groutiella |
| Citation | 1979 Bryologist 82(1): 9 |
| Holdings | 28 Specimens held in the Harvard University Herbaria identified as Groutiella tumidula (Mitten) Vitt |
| Identification made in | [no date] (28) |