| Classification | Polygonaceae: Polygonum |
| Harvard University Herbaria Barcode(s) | 02007784 |
| Collector | P. A. Rydberg |
| Collector number | 983 |
| Country | United States of America |
| State | South Dakota |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: South Dakota: Custer County: Custer |
| Locality | [no additional data] |
| Date Collected | 1892-07-16 |
| Verbatim Elevation | 5500 feet |
| Container | Flora of the Black Hills of South Dakota |
| Project | US and Canada - Mass Digitization |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/42dcb724-1df1-41c4-bee3-945b48183161 |
| Harvard University Herbaria Barcode | 02007784 |
| Herbarium | GH |
| Family | Polygonaceae |
| Determination | Polygonum sawatchense Small |
| Determined by | Costea, Mihai |
| Date Determined | 2003 |
| Determination Remarks | [is filed under name] [is Current name] |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
