| Name | Sphagnum robustum var. patulum J. Röll | 
| Authorship | Röll | 
| Rank | Variety | 
| Placed in | Sphagnum robustum (Warnstorf) J. Röll | 
| Citation | 1915 Hedwigia 56: 61 | 
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Sphagnum robustum var. patulum J. Röll | 
| Identification made in | [no date] (1) |