| Classification | Polygonaceae: Polygonum | 
| Harvard University Herbaria Barcode(s) | 00552329 | 
| Collector | M. L. Fernald & B. H. Long | 
| Collector number | 16736 | 
| Country | United States of America | 
| State | Massachusetts | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Massachusetts: Barnstable County: Harwich | 
| Locality | Harwich | 
| Date Collected | 1918-08-13 [August 13, 1918] | 
| Project | New England Vascular Plants TCN | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/8e6f9259-8af9-4674-8c51-d0ec960ad8a0 | 
| Harvard University Herbaria Barcode | 00552329 | 
| Herbarium | NEBC | 
| Family | Polygonaceae | 
| Determination | Polygonum pensylvanicum Linnaeus | 
| Determination Remarks | [filed under] [current name] | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |