| Name | Sphagnum cuspidatum var. serratum (Austin) Austin |
| Authorship | (Austin) Austin |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Sphagnum cuspidatum Ehrhart ex Hoffmann |
| Citation | 1880 Bull. Torrey Bot. Club 7: 15 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Sphagnum cuspidatum var. serratum (Austin) Austin |
| Identification made in | [no date] (1) |