| Name | Sphagnum fuscum var. fuscescens Warnstorf |
| Authorship | Warnstorf |
| Rank | Variety |
| Placed in | Sphagnum fuscum (Schimper) H. Klinggräff |
| Citation | 1888 Verh. Bot. Vereins Prov. Brandenburg 30: 103 |
| Holdings | 10 Specimens held in the Harvard University Herbaria identified as Sphagnum fuscum var. fuscescens Warnstorf |
| Identification made in | [no date] (10) |
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