| Name | Tortula ammonsiana H. A. Crum & L. E. Anderson |
| Authorship | H. A. Crum & L. E. Anderson |
| Rank | Species |
| Placed in | Tortula Hedwig |
| Citation | 1979 Bryologist 82: 469. f. 3–5. |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Tortula ammonsiana H. A. Crum & L. E. Anderson |
| Identification made in | [no date] (1) |