Compositae Working Group (CWG) (2021). Global Compositae Database. Carduus megacephalus (A.Gray) Nutt. ex Daniels. Accessed at: https://www.compositae.org/aphia.php?p=taxdetails&id=1181039 on 2024-11-16
LSID urn:lsid:compositae.org:names:E44F9243-E3E0-4BB1-BE38-531F1E5FD56D [details] Status nom. inval. pro syn. of Cirsium megacephalum (A. Gray) Cockerell (1911). [details] Taxonomy Oct 1911 [details]