Compositae Working Group (CWG) (2021). Global Compositae Database. Sonchus polyodon Webb & Berthel.. Accessed at: https://www.compositae.org/aphia.php?p=taxdetails&id=1198424 on 2025-03-30
Contributed data: Published Data only shown for fields conflicting with the consensus taxon record P.B. Webb, S. Berthelot, Hist. Nat. Iles Canaries 3(2,2). 1849-1850 [Cichorieae Portal] [details] LSID urn:lsid:compositae.org:names:88A2FF8D-A393-462C-B25A-B1C8C6FB1568 [details]