Compositae Working Group (CWG) (2021). Global Compositae Database. Sonchus biennis Moench. Accessed at: https://www.compositae.org/aphia.php?p=taxdetails&id=1193898 on 2024-04-27
original description(1794). Methodus (Moench) page(s): 545 [details]
From other sources
Contributed data: Published Data only shown for fields conflicting with the consensus taxon record C. Moench, Methodus. 1794 [Cichorieae Portal] Methodus Plantas Horti Botanici . . . [Tropicos] [details] LSID urn:lsid:compositae.org:names:0BF829F5-646C-4163-8C99-95E9EF6F77CF [details] Taxonomy 4 May 1794 [details]