| Classification | Potamogetonaceae: Potamogeton | 
| Harvard University Herbaria Barcode(s) | 01688931 | 
| Collector | R. W. Couch with [data not captured] | 
| Collector number | 430 | 
| Country | United States of America | 
| State | Oklahoma | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Oklahoma: Stephens County | 
| Locality | R6W, T1N, Sec 5; Duncan, 9 miles N Hwy 81, 4 miles E OK 27, 3 miles S, 2 miles E Clear Creek Lake | 
| Date Collected | 1980-09-20 | 
| Habitat | Soil: Red-Yellow Podzolic; Rock Type: Duncan Sandstone | 
| Container | Plants of Oklahoma | 
| Frequency | Scattered | 
| Project | US and Canada - Mass Digitization | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/2ac9b89d-c5f4-4356-b4bf-cd227a9ccbfd | 
| Harvard University Herbaria Barcode | 01688931 | 
| Herbarium | GH | 
| Previous ownership | [ex] Herbarium of Oral Roberts University; ex North Adams State College Herbarium (NASC); Transferred from Massachusetts College of Liberal Arts Herbarium (NASC) | 
| Family | Potamogetonaceae | 
| Determination | Potamogeton nodosus Poiret | 
| Determined by | Hellquist, Carl Barre | 
| Date Determined | 1988 | 
| Determination Remarks | [filed under] [current name] | 
| Sex | not determined | 
| Phenology | NotDetermined | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |