| Classification | Polygonaceae: Polygonum |
| Classification 1 | Polygonaceae: Persicaria |
| Barcode(s) | 00036734 |
| Type Status | Isotype |
| Collector | W. M. Carpenter |
| Collector number | 1431 |
| Country | United States of America |
| State | Louisiana |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Louisiana: Saint Landry County: Opelousas |
| Date Collected | [Jun-Jul] |
| Habitat | Low prairies |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/e17a7d7e-a918-4b2e-a43f-d6d4855031a0 |
| Harvard University Herbaria Barcode | 00036734 |
| Herbarium | GH |
| Family | Polygonaceae |
| Type Status | Isotype |
| Isotype of | Polygonum opelousanum Riddell |
| Verified by | Kittredge, Walter Tobey |
| Date Determined | 2019 |
| Determination Remarks | [filed under] |
| Taxon Reference | (for Polygonum opelousanum Riddell) New Orleans Med. Surg. J. 1853. 8: 760. |
| Family | Polygonaceae |
| Determination | Persicaria hydropiperoides (Michaux) Small |
| Determined by | Kittredge, Walter Tobey |
| Date Determined | 2019 |
| Determination Remarks | [current name] |
| Family | Polygonaceae |
| Determination | Polygonum hydropiperoides var. opelousanum (Riddell) W. Stone |
| Determined by | M.L.F. [M. L. Fernald] |
| Date Determined | 1919 |
| Family | Polygonaceae |
| Determination | Polygonum opelousanum Riddell |
| Determination Remarks | [label name] |
| Family | Polygonaceae |
| Determination | Polygonum hydropiperoides Michaux |
| Determined by | [pencil annotation on sheet] |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
