Compositae Working Group (CWG) (2021). Global Compositae Database. Sonchus zacinthoides DC.. Accessed at: https://www.compositae.org/aphia.php?p=taxdetails&id=1172722 on 2025-04-03
Contributed data: Published Data only shown for fields conflicting with the consensus taxon record A.P. de Candolle, Prodr. 7. 1838 [Cichorieae Portal] [details] LSID urn:lsid:compositae.org:names:D679E2C4-49AC-4C92-8A3D-27A41E300EA0 [details] Taxonomy late Apr 1838 [details] Type material [South Africa] "ad Cap. Bonae-Spei", Drege [details]