Compositae Working Group (CWG) (2025). Global Compositae Database. Cirsium scariosum var. americanum (A.Gray) D.J.Keil. Accessed at: https://www.compositae.org/gcd/aphia.php?p=taxdetails&id=1157488 on 2025-09-11
original description(ofCnicus americanus (A.Gray) A.Gray)Gray, A. (1883). Contributions to North American Botany. I. Characters of new Compositae, with revisions of certain genera, and critical notes. <em>Proc. Amer. Acad. Arts.</em> 19: 1-96. page(s): 56 [details]
Present Inaccurate Introduced: alien Containing type locality
Unreviewed
Contributed data: Authors Data only shown for fields conflicting with the consensus taxon record (A. Gray) D.J. Keil [Preliminary Checklist of North American Compositae] (A. Gray) D.J. Keil [Tropicos] [details] Contributed data: Basionym Data only shown for fields conflicting with the consensus taxon record Cirsium acaule (L.) Scop. var. americanum A.Gray [IPNI] Cirsium acaule var. americanum [Govaerts World Compositae Checklist A-G] Cirsium acaule var. americanum A. Gray [Tropicos] [details] Contributed data: Full Name Data only shown for fields conflicting with the consensus taxon record Cirsium scariosum Nutt. var. americanum (A. Gray) D.J. Keil [Preliminary Checklist of North American Compositae] Cirsium scariosum Nutt. var. americanum (A.Gray) D.J.Keil [IPNI] Cirsium scariosum var. americanum (A. Gray) D.J. Keil [Tropicos] [details] Contributed data: Published Data only shown for fields conflicting with the consensus taxon record Sida 21 [Govaerts World Compositae Checklist A-G] Sida 21(1): [Tropicos] [details] LSID urn:lsid:compositae.org:names:3A566F70-A658-4896-AD8B-9524FB02A0B4 [details] Taxonomy 20 Aug 2004 [details]