Compositae Working Group (CWG) (2021). Global Compositae Database. Cirsium undulatum var. undulatum (Nutt.) Spreng.. Accessed at: https://www.compositae.org/aphia.php?p=taxdetails&id=1156945 on 2024-05-13
Present Inaccurate Introduced: alien Containing type locality
From other sources
Contributed data: Full Name Data only shown for fields conflicting with the consensus taxon record Cirsium undulatum var. undulatum [Tropicos] [details] LSID urn:lsid:compositae.org:names:1875D9F2-B47C-439C-9FBE-6370F39C782E [details]