| Name | Sphagnum riparium var. platyphyllum Warnstorf |
| Authorship | Warnstorf |
| Rank | Variety |
| Placed in | Sphagnum riparium Angstrom |
| Citation | 1900 Bull. Soc. Imp. Naturalistes Moscou 14: 268 |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Sphagnum riparium var. platyphyllum Warnstorf |
| Identification made in | [no date] (4) |