| Classification | Polygonaceae: Polygonum |
| Classification 1 | Polygonaceae: Persicaria |
| Harvard University Herbaria Barcode(s) | 00267379 |
| Type Status | Syntype |
| Collector | A. Gray |
| Country | United States of America |
| State | New York |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: New York |
| Locality | Head of Cayuga Lake [Cayuga-Seneca County line] |
| Date Collected | 1831 |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/972b52d5-f49f-4ed5-ac0e-6738cd6f2325 |
| Harvard University Herbaria Barcode | 00267379 |
| Herbarium | GH |
| Family | Polygonaceae |
| Type Status | Syntype |
| Syntype of | Polygonum hartwrightii A. Gray |
| Verified by | Kittredge, Walter Tobey |
| Date Determined | 2008 |
| Taxon Reference | (for Polygonum hartwrightii A. Gray) Proc. Amer. Acad. Arts 1870. 8: 294. |
| Family | Polygonaceae |
| Determination | Persicaria amphibia (Linnaeus) Delarbre |
| Determined by | Kittredge, Walter Tobey |
| Date Determined | 2019 |
| Determination Remarks | [current name] |
| Family | Polygonaceae |
| Determination | Polygonum hartwrightii A. Gray |
| Determined by | [A. Gray (scripsit) W. T. Kittredge, 2019] |
| Determination Remarks | [label name] |
| Annotation Text | n. sp. |
| Family | Polygonaceae |
| Determination | Polygonum amphibium var. hartwrightii (A. Gray) Bissell |
| Determined by | [annotation on sheet] |
| Family | Polygonaceae |
| Determination | Polygonum natans f. hartwightii (A. Gray) Stanford |
| Determined by | [E. E. Stanford (scripsit) W. T. Kittredge, 2019] |
| Family | Polygonaceae |
| Determination | Polygonum amphibium var. stipulaceum N. Coleman |
| Determined by | [M. L. Fernald (scripsit) W. T. Kittredge, 2019] |
| Sex | not determined |
| Phenology | Flower |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
