Compositae Working Group (CWG) (2021). Global Compositae Database. Cirsium grettstadtianum Gross. Accessed at: https://www.compositae.org/aphia.php?p=taxdetails&id=1140957 on 2024-05-03
original description(1906). Allg. Bot. Z. Syst. 12 page(s): 94 [details]
From other sources
Contributed data: Full Name Data only shown for fields conflicting with the consensus taxon record Cirsium ×grettstadtianum Gross [Govaerts World Compositae Checklist A-G] [details] LSID urn:lsid:compositae.org:names:33C1B85D-572F-401B-B346-C093CABE5A40 [details]