Compositae Working Group (CWG) (2025). Global Compositae Database. Cirsium vulgare var. oligocephalum. Accessed at: https://www.compositae.org/gcd/aphia.php?p=taxdetails&id=1161827 on 2025-09-13
Contributed data: Full Name Data only shown for fields conflicting with the consensus taxon record Cirsium vulgare var. oligocephalum Erdner [Govaerts World Compositae Checklist A-G] [details] LSID urn:lsid:compositae.org:names:80EA8C01-583B-476C-9C61-224E5DAC500F [details]