Compositae Working Group (CWG) (2025). Global Compositae Database. Sonchus friesii Boulos. Accessed at: https://www.compositae.org/gcd/aphia.php?p=taxdetails&id=1095895 on 2025-04-03
Present Inaccurate Introduced: alien Containing type locality
Unreviewed
Contributed data: Published Data only shown for fields conflicting with the consensus taxon record Bot. Notiser cxx. 456 (1967). [African Plant Database] Boulos in Bot. Not. 120. 1967 [Cichorieae Portal] [details] LSID urn:lsid:compositae.org:names:565180A9-2AED-4E02-BE4D-65492072F2A4 [details]