Compositae Working Group (CWG) (2025). Global Compositae Database. Pleiacanthus spinosus (Nutt.) Rydb.. Accessed at: https://compositae.org/gcd/aphia.php?p=taxdetails&id=1095037 on 2025-04-01
Present Inaccurate Introduced: alien Containing type locality
Unreviewed
Contributed data: Authors Data only shown for fields conflicting with the consensus taxon record Rydb. [IPNI] [details] Contributed data: Full Name Data only shown for fields conflicting with the consensus taxon record Pleiacanthus spinosus Rydb. [IPNI] [details] Contributed data: Published Data only shown for fields conflicting with the consensus taxon record Flora of the Rocky Mountains [Tropicos] Rydb., Fl. Rocky Mts.. 1917 [Cichorieae Portal] [details] LSID urn:lsid:compositae.org:names:BC1CC114-C45B-475A-95C6-5F52AAE18822 [details] Taxonomy 31 Dec 1917 [details] Type material [USA] "In the Rocky Mountain Plains towards California." [details]