Compositae Working Group (CWG) (2021). Global Compositae Database. Carduus americanus (A.Gray) Rydb.. Accessed at: https://www.compositae.org/aphia.php?p=taxdetails&id=1166474 on 2024-05-18
Contributed data: Authors Data only shown for fields conflicting with the consensus taxon record (A. Gray) Rydb. [Preliminary Checklist of North American Compositae] (A. Gray) Rydb. [Tropicos] Rydb. [Govaerts World Compositae Checklist A-G] Rydb. [IPNI] [details] Contributed data: Basionym Data only shown for fields conflicting with the consensus taxon record Cirsium acaule var. americanum A. Gray [Tropicos] [details] Contributed data: Full Name Data only shown for fields conflicting with the consensus taxon record Carduus americanus (A. Gray) Rydb. [Preliminary Checklist of North American Compositae] Carduus americanus (A. Gray) Rydb. [Tropicos] Carduus americanus Rydb. [Govaerts World Compositae Checklist A-G] Carduus americanus Rydb. [IPNI] [details] Contributed data: Published Data only shown for fields conflicting with the consensus taxon record Bull. Torrey Bot. Club [IPNI] Bulletin of the Torrey Botanical Club 28(9): [Tropicos] [details] LSID urn:lsid:compositae.org:names:82495412-C717-4D8D-955B-057EFD59E822 [details] Taxonomy nom. illeg.; as "Americanus" [details]