| Classification | Potamogetonaceae: Potamogeton |
| Harvard University Herbaria Barcode(s) | 01695332 |
| Collector | H. St. John |
| Collector number | 2542 |
| Country | United States of America |
| State | New York |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: New York: Suffolk County |
| Locality | Vicinity of Riverhead, town of Southampton |
| Date Collected | 1920-07-25 - 1920-08-03 |
| Habitat | Creek in salt marsh |
| Container | Flora of Eastern Long Island |
| Project | US and Canada - Mass Digitization |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/ea6be344-1332-4709-860b-87738b9a073e |
| Harvard University Herbaria Barcode | 01695332 |
| Herbarium | GH |
| Family | Potamogetonaceae |
| Determination | Potamogeton perfoliatus Linnaeus |
| Determined by | Haynes, Robert Ralph |
| Date Determined | 1979 |
| Determination Remarks | [is filed under name] [is Current name] |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
