| Name | Sphagnum palustre var. laxum Röll |
| Authorship | Röll |
| Rank | Variety |
| Placed in | Sphagnum palustre Linnaeus |
| Citation | 1915 Hedwigia 56: 98 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Sphagnum palustre var. laxum Röll |
| Identification made in | [no date] (1) |