| Classification | Cirsium |
| Harvard University Herbaria Barcode(s) | 02172944 |
| Collector | W. R. Watson |
| Collector number | 5966 |
| Country | Canada |
| State | Ontario |
| Geography | North America: North America (CA, US, MX) (Region): Canada: Ontario |
| Locality | [data not captured] |
| Date Collected | 1922-07-20 |
| Project | US and Canada - Mass Digitization |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/eec99d05-42d7-49ce-8d00-03577df5c393 |
| Harvard University Herbaria Barcode | 02172944 |
| Herbarium | GH |
| Determination | Cirsium arvense (Linnaeus) Scopoli |
| Determination Remarks | [filed under] [current name] |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
