| Classification | Potamogetonaceae: Potamogeton |
| Barcode(s) | 00967201 |
| Collector | H. D. Thoreau |
| Country | United States of America |
| State | Massachusetts |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Massachusetts: Middlesex County: Concord |
| Locality | Off Clam Shell |
| Remarks | ["The Elliptic Leaved Potamogeton off Clam Shell also just above RR bridge -- is still out." unpublished passage for Journal from Aug. 3, 1856] |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/43e6baac-a909-4ee6-86f5-030d4cb8161b |
| Harvard University Herbaria Barcode | 00967201 |
| Herbarium | GH |
| Family | Potamogetonaceae |
| Determination | Potamogeton epihydrus Rafinesque |
| Determined by | RJE [R. J. Eaton] |
| Date Determined | 1969 |
| Determination Remarks | [current name] |
| Annotation Text | var. epihydrus |
| Subcollection | Thoreau Herbarium |
| Phenology | Fruit |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
