Compositae Working Group (CWG) (2025). Global Compositae Database. Haplopappus engelmannii (A.Gray) H.M.Hall. Accessed at: https://compositae.org/gcd/aphia.php?p=taxdetails&id=1204582 on 2025-04-24
Contributed data: Authors Data only shown for fields conflicting with the consensus taxon record (A. Gray) H.M. Hall [Preliminary Checklist of North American Compositae] (A. Gray) H.M. Hall [Tropicos] H.M.Hall [IPNI] [details] Contributed data: Basionym Data only shown for fields conflicting with the consensus taxon record Bigelowia engelmannii A. Gray [Tropicos] [details] Contributed data: Full Name Data only shown for fields conflicting with the consensus taxon record Haplopappus engelmannii (A. Gray) H.M. Hall [Preliminary Checklist of North American Compositae] Haplopappus engelmannii (A. Gray) H.M. Hall [Tropicos] Haplopappus engelmannii H.M.Hall [IPNI] [details] LSID urn:lsid:compositae.org:names:EE88E23C-71FC-4BDB-83EA-CD4FB18C97EA [details] Taxonomy as "engelmanni" [details]