| Name | Sphagnum cuspidatum var. falcatum Russow | 
| Authorship | Russow | 
| Rank | Variety | 
| Placed in | Sphagnum cuspidatum Renauld | 
| Citation | 1865 Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 7: 137. | 
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Sphagnum cuspidatum var. falcatum Russow | 
| Identification made in | [no date] (1) |