| Name | Sarmentypnum exannulatum (Schimper) Hedenäs |
| Authorship | (Schimper) Hedenäs |
| Rank | Species |
| Placed in | Sarmentypnum |
| Citation | 2006 J. Hattori Bot. Lab. 100: 132 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Sarmentypnum exannulatum (Schimper) Hedenäs |
| Identification made in | 2016 (1) |