Compositae Working Group (CWG) (2021). Global Compositae Database. Cirsium undulatum f. album Farw.. Accessed at: https://www.compositae.org/aphia.php?p=taxdetails&id=1240997 on 2024-05-18
original description(1927). Amer. Midl. Naturalist 10 page(s): 219 [details]
From other sources
Contributed data: Published Data only shown for fields conflicting with the consensus taxon record American Midland Naturalist 10: [Tropicos] [details] LSID urn:lsid:compositae.org:names:2764DAA3-48BC-441D-B1CE-C7CDEDE0CC50 [details]