| Name | Carex atrata var. aterrima (Hoppe) A. Winkler |
| Authorship | (Hoppe) A. Winkler |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Carex atrata Linnaeus |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Carex atrata var. aterrima (Hoppe) A. Winkler |
| Identification made in | [no date] (1) |
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