Compositae Working Group (CWG) (2021). Global Compositae Database. Cnicus afer Sm.. Accessed at: https://compositae.org/aphia.php?p=taxdetails&id=1167730 on 2024-05-09
original description(1837). Fl. Graec. 9: 20 (1837) page(s): 20 [details]
From other sources
Contributed data: Published Data only shown for fields conflicting with the consensus taxon record Fl. Graec. 9 [Govaerts World Compositae Checklist A-G] [details] LSID urn:lsid:compositae.org:names:7801149D-A1D9-4F3E-A346-0C1DD08FD1C9 [details]