Compositae Working Group (CWG) (2025). Global Compositae Database. Carduus pycnocephalus var. tenuiflorus (Curtis). Accessed at: https://www.compositae.org/gcd/aphia.php?p=taxdetails&id=1236867 on 2025-09-15
Contributed data: Authors Data only shown for fields conflicting with the consensus taxon record (Curtis) Fiori [Tropicos] (Curtis) Fiori & Bég. [Flora del Conosur] [details] Contributed data: Full Name Data only shown for fields conflicting with the consensus taxon record Carduus pycnocephalus L. var. tenuiflorus (Curtis) Fiori & Bég. [Flora del Conosur] Carduus pycnocephalus var. tenuiflorus (Curtis) Fiori [Tropicos] [details] LSID urn:lsid:compositae.org:names:FD009911-32E2-49E5-AF34-D483438F8D1A [details] Status comb. superfl. [details]