| Name | Carex tonsa var. rugosperma (Mackenzie) Crins |
| Authorship | (Mackenzie) Crins |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Carex tonsa (Fernald) E. P. Bicknell |
| GUID | urn:lsid:ipni.org:names:1152203-2 |
| Holdings | 238 Specimens held in the Harvard University Herbaria identified as Carex tonsa var. rugosperma (Mackenzie) Crins |
| Identification made in | [no date] (224), 2004 (2), 2010 (1), 2011 (9), 2018 (2) |
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