| Name | Sphagnum warnstorfianum Du Rietz |
| Authorship | Du Rietz |
| Rank | Species |
| Placed in | Sphagnum |
| Citation | 1945 Svensk Bot. Tidskr. 38: 405 |
| Holdings | 92 Specimens held in the Harvard University Herbaria identified as Sphagnum warnstorfianum Du Rietz |
| Identification made in | [no date] (92) |