Compositae Working Group (CWG) (2025). Global Compositae Database. Lactuca integrifolia Nutt.. Accessed at: https://www.compositae.org/gcd/aphia.php?p=taxdetails&id=1181927 on 2025-09-12
original description(1818). The Genera of North American Plants. 2: Addit. page(s): 124 [details]
Unreviewed
Contributed data: Published Data only shown for fields conflicting with the consensus taxon record T. Nuttall, Gen. N. Amer. Fl. 2. 1818 [Cichorieae Portal] [details] LSID urn:lsid:compositae.org:names:3D823DE9-E052-47D5-A4A1-578FE98803FE [details] Taxonomic remark Replacement name for Sonchus pulchellus Pursh [details] Taxonomy 14 Jul 1818 [details] Type material [USA] "On the banks of the Missouri" [details]