| Name | Lactuca canadensis var. integrifolia (Bigelow) A. Gray |
| Authorship | (Bigelow) A. Gray |
| Rank | Variety |
| Placed in | Lactuca canadensis Linnaeus |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Lactuca canadensis var. integrifolia (Bigelow) A. Gray |
| Identification made in | [no date] (4) |
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