| Name | Carex filifolia var. erostrata Kükenthal |
| Authorship | Kükenthal |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Carex filifolia Nuttall |
| GUID | urn:lsid:ipni.org:names:46179-2 |
| Citation | 1909 Pflanzenr. [Engler] 4, Fam. 20: 86 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Carex filifolia var. erostrata Kükenthal |
| Identification made in | [no date] (1) |