| Name | Carex atrofusca var. decolorata Porsild |
| Authorship | Porsild |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Carex atrofusca Schkuhr |
| Citation | 1943 Sargentia 4: 20 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Carex atrofusca var. decolorata Porsild |
| Identification made in | [no date] (1) |