| Classification | Cyperaceae: Carex |
| Harvard University Herbaria Barcode(s) | 00766539 |
| Collector | E. F. Williams |
| Country | United States of America |
| State | Massachusetts |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Massachusetts: Middlesex County: Winchester |
| Locality | Winchester, Winter Pond |
| Date Collected | 1895-05-12 [May 12, 1895] |
| Project | New England Vascular Plants TCN |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/804bb825-18fb-4a51-80cc-5ae038c6aafb |
| Harvard University Herbaria Barcode | 00766539 |
| Herbarium | NEBC |
| Family | Cyperaceae |
| Determination | Carex tonsa var. rugosperma (Mackenzie) Crins |
| Determination Remarks | [is filed under name] [is Current name] |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
