| Classification | Asteraceae: Lactuca |
| Harvard University Herbaria Barcode(s) | 00872925 |
| Collector | H. D. Thoreau |
| Country | United States of America |
| Geography | North America: North America (CA, US, MX) (Region): United States of America |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/e412c9f1-622b-40db-b970-a2a1ae8a85f7 |
| Harvard University Herbaria Barcode | 00872925 |
| Herbarium | GH |
| Family | Asteraceae |
| Determination | Lactuca elongata Muhlenberg ex Willdenow |
| Determination Remarks | [is label name] |
| Family | Asteraceae |
| Determination | Lactuca canadensis Linnaeus |
| Determined by | Kittredge, Walter Tobey |
| Date Determined | 2017 |
| Determination Remarks | [is Current name] |
| Subcollection | Thoreau Herbarium |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
