| Classification | Potamogetonaceae: Potamogeton | 
| Harvard University Herbaria Barcode(s) | 01695203 | 
| Collector | F. P. Metcalf | 
| Collector number | 2290 | 
| Country | United States of America | 
| State | Michigan | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Michigan: Luce County | 
| Locality | Tahquamenon R. | 
| Date Collected | 1922-09-** | 
| Project | US and Canada - Mass Digitization | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/f6c92ba4-55bd-43c9-910a-60bec268417c | 
| Harvard University Herbaria Barcode | 01695203 | 
| Herbarium | GH | 
| Previous ownership | Ex U.S. Nat. Herb. | 
| Family | Potamogetonaceae | 
| Determination | Potamogeton obtusifolius Mertens & W. D. J. Koch | 
| Determined by | Haynes, Robert Ralph | 
| Date Determined | 1971 | 
| Determination Remarks | [filed under] [current name] | 
| Sex | not determined | 
| Phenology | NotDetermined | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |