| Classification | Polygonaceae: Polygonum |
| Classification 1 | Polygonaceae: Persicaria |
| Classification 2 | Polygonaceae: Polygonum |
| Harvard University Herbaria Barcode(s) | 00339134 |
| Type Status | Isosyntype |
| Collector | J. G. Schaffner |
| Collector number | 882 |
| Country | Mexico |
| State | San Luis Potosà |
| Geography | North America: North America (CA, US, MX) (Region): Mexico: San Luis Potosà |
| Locality | prope Morales |
| Date Collected | 1876 |
| Habitat | In paludosis |
| Container | Flora Mexicana |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/bbc6bb3e-3492-4ac5-9df5-6cb9cf256b88 |
| Harvard University Herbaria Barcode | 00339134 |
| Herbarium | GH |
| Family | Polygonaceae |
| Determination | Polygonum mexicanum Small |
| Determined by | Small, John Kunkel |
| Annotation Text | Monog. Am. Polyg. |
| Family | Polygonaceae |
| Determination | Polygonum mexicanum Small |
| Annotation Text | Cited by Stanford, Rhodora 27: 182 [1925] |
| Family | Polygonaceae |
| Determination | Polygonum pensylvanicum Linnaeus |
| Determination Remarks | [is label name] |
| Family | Polygonaceae |
| Determination | Persicaria mexicana (Small) Small |
| Determined by | Kim, Sangtae |
| Date Determined | 2007-12-19 |
| Family | Polygonaceae |
| Determination | Persicaria segetum (Kunth) Small |
| Determined by | Kittredge, Walter Tobey |
| Date Determined | 2019 |
| Determination Remarks | [is Current name] |
| Family | Polygonaceae |
| Type Status | Isosyntype |
| Isosyntype of | Polygonum mexicanum Small |
| Verified by | Kittredge, Walter Tobey |
| Date Determined | 2011 |
| Determination Remarks | [is filed under name] |
| Taxon Reference | (for Polygonum mexicanum Small) Bull. Torrey Bot. Club 1892. 19: 356. |
| Phenology | FlowerAndFruit |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
