Compositae Working Group (CWG) (2021). Global Compositae Database. Carduus nutans var. strictus Kauffm.. Accessed at: https://www.compositae.org/aphia.php?p=taxdetails&id=1236114 on 2024-04-30
original description(1906). Fl. Mosc.: 294 (1906) page(s): 294 [details]
From other sources
Contributed data: Published Data only shown for fields conflicting with the consensus taxon record Fl. Mosc. [Govaerts World Compositae Checklist A-G] [details] LSID urn:lsid:compositae.org:names:896F1AC5-B42B-4950-9780-C836D800D29F [details]