Compositae Working Group (CWG) (2025). Global Compositae Database. Cirsium rydbergii Petr.. Accessed at: https://www.compositae.org/gcd/aphia.php?p=taxdetails&id=1114821 on 2025-03-26
Present Inaccurate Introduced: alien Containing type locality
Unreviewed
Contributed data: Authors Data only shown for fields conflicting with the consensus taxon record Petrak [Preliminary Checklist of North American Compositae] [details] Contributed data: Full Name Data only shown for fields conflicting with the consensus taxon record Cirsium rydbergii Petrak [Preliminary Checklist of North American Compositae] [details] Contributed data: Published Data only shown for fields conflicting with the consensus taxon record Beih. Bot. Centralbl. 35(2) [Govaerts World Compositae Checklist A-G] Beihefte zum Botanischen Centralblatt 35(2[2/3]): [Tropicos] [details] LSID urn:lsid:compositae.org:names:57074A4B-3DEE-4B82-BC1C-FBFD024A6B55 [details] Taxonomy as "Rydbergii" [details]