Taxonomy Type: P. spinosus (T. Nuttall) Rydberg (Lygodesmia spinosa T. Nuttall), 31 Dec 1917
Taxonomy Type: P. spinosus (T. Nuttall) Rydberg (Lygodesmia spinosa T. Nuttall), 31 Dec 1917 [details]
Compositae Working Group (CWG) (2025). Global Compositae Database. Pleiacanthus (Nutt.) Rydb.. Accessed at: https://www.compositae.org/gcd/aphia.php?p=taxdetails&id=1075409 on 2025-09-12
Contributed data: Authors Data only shown for fields conflicting with the consensus taxon record (T. Nutall) Rydb. [Kadereit & Jeffrey 2007] Rydb. [IPNI] Rydb. [Preliminary Checklist of North American Compositae] [details] Contributed data: Basionym Data only shown for fields conflicting with the consensus taxon record Lygodesmia subgen. Pleiacanthus Nutt. [IPNI] Lygodesmia subgen. Pleiacanthus Nutt. [Tropicos] [details] Contributed data: Full Name Data only shown for fields conflicting with the consensus taxon record Pleiacanthus (T. Nutall) Rydb. [Kadereit & Jeffrey 2007] Pleiacanthus Rydb. [IPNI] Pleiacanthus Rydb. [Preliminary Checklist of North American Compositae] [details] Contributed data: Published Data only shown for fields conflicting with the consensus taxon record Fl. Rocky Mount. 1023 [Kadereit & Jeffrey 2007] Flora of the Rocky Mountains [Tropicos] Rydb., Fl. Rocky Mts.. 1917 [Cichorieae Portal] [details] LSID urn:lsid:compositae.org:names:ECBE44E2-4F11-430A-9C04-086752FB7757 [details] Taxonomy Type: P. spinosus (T. Nuttall) Rydberg (Lygodesmia spinosa T. Nuttall), 31 Dec 1917 [details]