| Name | Sphagnum robustum var. obscurum (Russow) Cardot |
| Authorship | (Russow) Cardot |
| Rank | Variety |
| Placed in | Sphagnum robustum (Warnstorf) J. Röll |
| Citation | 1897 Bull. Soc. Hist. Nat. Autun 10: 383 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Sphagnum robustum var. obscurum (Russow) Cardot |
| Identification made in | [no date] (2) |
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