Compositae Working Group (CWG) (2025). Global Compositae Database. Cirsium polymorphum Porta. Accessed at: https://www.compositae.org/gcd/aphia.php?p=taxdetails&id=1129268 on 2025-03-24
original description(1913). Ann. Bot. (Rome) 12 page(s): 23 [details]
Unreviewed
Contributed data: Full Name Data only shown for fields conflicting with the consensus taxon record Cirsium ×polymorphum Porta [Govaerts World Compositae Checklist A-G] [details] LSID urn:lsid:compositae.org:names:E4F685D9-9DBA-44E0-B83F-613DAE86A1DA [details]