| Classification | Polygonaceae: Polygonum | 
| Classification 1 | Polygonaceae: Persicaria | 
| Barcode(s) | 00736115 | 
| Collector | M. L. Fernald & B. H. Long | 
| Collector number | 16763 | 
| Country | United States of America | 
| State | Massachusetts | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Massachusetts: Barnstable County: Brewster | 
| Locality | Brewster | 
| Date Collected | 1918-08-27 [August 27 1918] | 
| Project | New England Vascular Plants TCN | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/d00c5ac8-a651-4855-9e73-2015f4c37c67 | 
| Harvard University Herbaria Barcode | 00736115 | 
| Herbarium | NEBC | 
| Family | Polygonaceae | 
| Determination |  Polygonum hydropiperoides Michaux | 
| Determined by | Park, Chong-wook | 
| Date Determined | 1990-06-** | 
| Determination Remarks |  [current name] | 
| Family | Polygonaceae | 
| Determination |  Persicaria hydropiperoides (Michaux) Small | 
| Determination Remarks |  [filed under] | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |