| Name | Sphagnum acutifolium var. flavorubellum Warnstorf |
| Authorship | Warnstorf |
| Rank | Variety |
| Placed in | Sphagnum acutifolium Schrader |
| Citation | 1890 Bot. Gaz. 15: 193 |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Sphagnum acutifolium var. flavorubellum Warnstorf |
| Identification made in | [no date] (4) |