| Name | Carex speciosa subsp. dilatata Noltie |
| Authorship | Noltie |
| Rank | Subspecies |
| Placed in | Carex speciosa Kunth |
| Citation | 1993 Edinburgh J. Bot. 50(2): 197 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Carex speciosa subsp. dilatata Noltie |
| Identification made in | 2015 (2) |