Compositae Working Group (CWG) (2021). Global Compositae Database. Sonchus flexuosus Ledeb.. Accessed at: https://www.compositae.org/aphia.php?p=taxdetails&id=1177962 on 2025-04-03
original description(1811). Hort. Dorpat. Suppl. 1 page(s): 5 [details]
Unreviewed
Contributed data: Published Data only shown for fields conflicting with the consensus taxon record C.F. von Ledebour, Ind. Sem. Horti Dorpat. 1811, Suppl.. 1811 [Cichorieae Portal] Ind. Pl. Hort. Dorpat. Suppl. [Tropicos] [details] LSID urn:lsid:compositae.org:names:59529F9A-C2AA-4A6B-B1D9-432117607C82 [details]