| Classification | Cyperaceae: Carex | 
| Harvard University Herbaria Barcode(s) | 00766538 | 
| Collector | M. L. Fernald | 
| Country | United States of America | 
| State | Massachusetts | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Massachusetts: Middlesex County: Weston | 
| Locality | Weston | 
| Date Collected | 1897-05-14 [May 14, 1897] | 
| Habitat | on rocky hills | 
| Frequency | Common | 
| Project | New England Vascular Plants TCN | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/969e0054-963b-4e54-82c2-d088a42ff6bc | 
| Harvard University Herbaria Barcode | 00766538 | 
| Herbarium | NEBC | 
| Family | Cyperaceae | 
| Determination | Carex tonsa var. rugosperma (Mackenzie) Crins | 
| Determination Remarks | [filed under] [current name] | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |