| Classification | Asteraceae: Sonchus | 
| Harvard University Herbaria Barcode(s) | 00637479 | 
| Collector | F. C. Seymour | 
| Collector number | 1808 | 
| Country | United States of America | 
| State | Massachusetts | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Massachusetts: Dukes County: Oak Bluffs | 
| Locality | Oak Bluffs | 
| Date Collected | 1917-09-12 [12 Sept. 1917] | 
| Project | New England Vascular Plants TCN | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/40b706bf-0ef7-408a-b8cf-9834fedc44e2 | 
| Harvard University Herbaria Barcode | 00637479 | 
| Herbarium | GH | 
| Family | Asteraceae | 
| Determination | Sonchus asper (Linnaeus) Hill | 
| Determination Remarks | [filed under] [current name] | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |