| Name | Sphagnum medium f. versicolor Warnstorf |
| Authorship | Warnstorf |
| Rank | Forma |
| Placed in | Sphagnum medium Limpricht |
| Citation | 1890 Bot. Gaz. 15: 253 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Sphagnum medium f. versicolor Warnstorf |
| Identification made in | [no date] (2) |