| Classification | Polygonaceae: Rumex | 
| Barcode(s) | 02005097 | 
| Collector | C. B. Hellquist & L. Crouch | 
| Collector number | 12480 | 
| Country | United States of America | 
| State | Oklahoma | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Oklahoma: Marshall County | 
| Locality | "Mayfield Flats" 0.25 miles west of O.U. Biological Station, Sec. 8, T8S, R5E | 
| Date Collected | 1978-06-03 | 
| Habitat | Salix nigra marsh | 
| Container | Flora of Oklahoma | 
| Project | US and Canada - Mass Digitization | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/5f54fd2c-ae47-47a9-bf52-8811f7ca5399 | 
| Harvard University Herbaria Barcode | 02005097 | 
| Herbarium | GH | 
| Previous ownership | ex Herbarium of Boston State College; Transferred from Massachusetts College of Liberal Arts Herbarium (NASC) | 
| Family | Polygonaceae | 
| Determination |  Rumex crispus Linnaeus | 
| Determination Remarks |  [filed under] [current name] | 
| Sex | not determined | 
| Phenology | NotDetermined | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |