Compositae Working Group (CWG) (2021). Global Compositae Database. Cirsium involucratum var. horridum Hook.f.. Accessed at: https://www.compositae.org/aphia.php?p=taxdetails&id=1225709 on 2025-03-24
Contributed data: Full Name Data only shown for fields conflicting with the consensus taxon record Cirsium involucratum var. horrida Hook.f. [Govaerts World Compositae Checklist A-G] [details] LSID urn:lsid:compositae.org:names:9687575E-01C1-4CDF-8440-16C44D7D0D34 [details]