| Classification | Polygonaceae: Polygonum | 
| Classification 1 | Polygonaceae: Persicaria | 
| Harvard University Herbaria Barcode(s) | 00036729 | 
| Type Status | Holotype | 
| Collector | S. M. Tracy & F. E. Lloyd | 
| Collector number | 193 | 
| Country | United States of America | 
| State | Mississippi | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Mississippi: Harrison County: Long Beach | 
| Date Collected | 1900-09-08 | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/a17ac1a7-0c03-4dc2-84a0-3d8eb8762022 | 
| Harvard University Herbaria Barcode | 00036729 | 
| Herbarium | GH | 
| Family | Polygonaceae | 
| Type Status | Holotype | 
| Holotype of | Polygonum mississippiense Stanford | 
| Verified by | Kittredge, Walter Tobey | 
| Date Determined | 2019 | 
| Determination Remarks | [filed under] | 
| Taxon Reference | (for  Polygonum mississippiense Stanford) Rhodora 1925. 27(322): 183. | 
| Family | Polygonaceae | 
| Determination | Persicaria pensylvanica (Linnaeus) M. Gomez | 
| Determined by | Kittredge, Walter Tobey | 
| Date Determined | 2019 | 
| Determination Remarks | [current name] | 
| Family | Polygonaceae | 
| Determination | Polygonum mississippiense Stanford | 
| Determined by | E.E.S. [E. E. Stanford] | 
| Date Determined | 1924 | 
| Annotation Text | Type | 
| Family | Polygonaceae | 
| Determination | Polygonum mexicanum Small | 
| Determined by | Weatherby, Charles Alfred | 
| Date Determined | 1922 | 
| Family | Polygonaceae | 
| Determination | InQuestion Polygonum mexicanum Small | 
| Determination Remarks | [label name] | 
| Annotation Text | Polygonum sp. Mexican? | 
| Sex | not determined | 
| Phenology | Flower | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |