Compositae Working Group (CWG) (2021). Global Compositae Database. Senecio atropurpureus var. ulmeri (Steffen) A.E.Porsild. Accessed at: https://www.compositae.org/aphia.php?p=taxdetails&id=1228624 on 2024-10-30
Contributed data: Authors Data only shown for fields conflicting with the consensus taxon record (Steffen) A.E. Porsild [Preliminary Checklist of North American Compositae] (Steffen) A.E. Porsild [Tropicos] [details] Contributed data: Full Name Data only shown for fields conflicting with the consensus taxon record Senecio atropurpureus (Ledeb.) B.Fedtsch. var. ulmeri (Steffen) A.E.Porsild [IPNI] Senecio atropurpureus (Ledeb.) Fedtsch. var. ulmeri (Steffen) A.E. Porsild [Preliminary Checklist of North American Compositae] Senecio atropurpureus var. ulmeri (Steffen) A.E. Porsild [Tropicos] [details] Contributed data: Published Data only shown for fields conflicting with the consensus taxon record Bulletin of the National Museum of Canada 121: [Tropicos] [details] LSID urn:lsid:compositae.org:names:386236DB-93EA-4577-ACC9-49FBCFCDCDD3 [details]