| Classification | Asteraceae: Lactuca | 
| Harvard University Herbaria Barcode(s) | 00626188 | 
| Collector | R. A. Howard & B. J. Howard | 
| Collector number | 5913 | 
| Country | United States of America | 
| State | Massachusetts | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Massachusetts: Middlesex County: Waltham | 
| Locality | Waltham,  on peninsula near spillway | 
| Date Collected | 1965 [Sept.-Oct. 1965] | 
| Habitat | exposed areas | 
| Project | New England Vascular Plants TCN | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/3e872e6e-64f9-4061-a6aa-f071d4049078 | 
| Harvard University Herbaria Barcode | 00626188 | 
| Herbarium | NEBC | 
| Family | Asteraceae | 
| Determination | Lactuca serriola Linnaeus | 
| Determination Remarks | [filed under] [current name] | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |