| Classification | Polygonaceae: Polygonum |
| Classification 1 | Polygonaceae: Persicaria |
| Harvard University Herbaria Barcode(s) | 00036717 |
| Collector | H. St. John |
| Collector number | 1215 |
| Country | Canada |
| State | Nova Scotia |
| Geography | North America: North America (CA, US, MX) (Region): Canada: Nova Scotia |
| Locality | Sable Island |
| Georeference | 43.9833333, -59.783333 Method: Unknown |
| Date Collected | 1913-08-16 |
| Habitat | Shallow fresh water pond |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/5eacdac7-bdfd-475c-ab33-7a031100dd65 |
| Harvard University Herbaria Barcode | 00036717 |
| Herbarium | GH |
| Family | Polygonaceae |
| Determination | Polygonum hydropiperoides var. psilostachyum H. St. John |
| Determination Remarks | [is label name] |
| Annotation Text | n. var. [Paratype] |
| Family | Polygonaceae |
| Determination | Persicaria hydropiperoides (Michaux) Small |
| Determination Remarks | [is Current name] |
| Sex | not determined |
| Phenology | Flower |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
