Compositae Working Group (CWG) (2021). Global Compositae Database. Cirsium lactucinum Rydb.. Accessed at: https://www.compositae.org/aphia.php?p=taxdetails&id=1214122 on 2025-03-27
original description(1917). Fl. Rocky Mts.[details]
Unreviewed
Contributed data: Notes Data only shown for fields conflicting with the consensus taxon record based on same collection as C. rydbergii Petr. (1917) [Tropicos] [details] Contributed data: Published Data only shown for fields conflicting with the consensus taxon record Flora of the Rocky Mountains [Tropicos] [details] LSID urn:lsid:compositae.org:names:0B2194BF-91BC-47AD-8F84-FFEB34010E29 [details] Taxonomy 31 Dec 1917 [details]