Compositae Working Group (CWG) (2021). Global Compositae Database. Haplopappus fremontii subsp. monocephalus (A.Nelson) H.M.Hall. Accessed at: https://www.compositae.org/aphia.php?p=taxdetails&id=1222107 on 2024-10-27
Contributed data: Authors Data only shown for fields conflicting with the consensus taxon record (A. Nelson) H.M. Hall [Preliminary Checklist of North American Compositae] (A. Nelson) H.M. Hall [Tropicos] [details] Contributed data: Basionym Data only shown for fields conflicting with the consensus taxon record Oonopsis monocephala A. Nelson [Tropicos] [details] Contributed data: Full Name Data only shown for fields conflicting with the consensus taxon record Haplopappus fremontii (A. Gray) Greene ssp. monocephalus (A. Nelson) H.M. Hall [Preliminary Checklist of North American Compositae] Haplopappus fremontii subsp. monocephalus (A. Nelson) H.M. Hall [Tropicos] [details] LSID urn:lsid:compositae.org:names:508F6775-72A9-47D2-8675-B7851EFA381B [details] Taxonomy as "fremonti" [details]