| Name | Lactuca canadensis f. angustata Wiegand |
| Authorship | Wiegand |
| Rank | Forma |
| NomenclaturalStatus | NomLeg |
| Placed in | Lactuca canadensis Linnaeus |
| GUID | urn:lsid:ipni.org:names:290641-2 |
| Citation | 1920 Rhodora 22: 11 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Lactuca canadensis f. angustata Wiegand |
| Identification made in | [no date] (1), 1921 (2) |
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