| Name | Sphagnum dusenii var. parvifolium Warnstorf |
| Authorship | Warnstorf |
| Rank | Variety |
| Placed in | Sphagnum dusenii Russow & Warnst. |
| Citation | 1892 Samml. Eur. Torfm. 3: n. 281 |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Sphagnum dusenii var. parvifolium Warnstorf |
| Identification made in | [no date] (4) |