| Classification | Polygonaceae: Polygonum | 
| Harvard University Herbaria Barcode(s) | 00353575 | 
| Collector | L. J. Mehrhoff & E. Corrigan | 
| Collector number | 22413 | 
| Country | United States of America | 
| State | Connecticut | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Connecticut: Litchfield County: Bridgewater | 
| Locality | north side of Route 67 just east of New Milford town line and Cascade Road. | 
| Locality Remarks | Maptech determined coordinates: 41.55705°N -73.38769°W | 
| Date Collected | 2004-10-22 | 
| Habitat | roadside hill near woods | 
| Frequency | Very abundant, forming dense thicket | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/db622a53-d469-40ca-9b60-6fde4547de78 | 
| Harvard University Herbaria Barcode | 00353575 | 
| Herbarium | NEBC | 
| Family | Polygonaceae | 
| Determination | Polygonum perfoliatum Linnaeus | 
| Determination Remarks | [filed under] [label name] [current name] | 
| Phenology | Fruit | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |