Compositae Working Group (CWG) (2021). Global Compositae Database. Haplopappus phyllocephalus var. megacephalus (Nash) Waterf.. Accessed at: https://www.compositae.org/aphia.php?p=taxdetails&id=1234537 on 2025-03-25
Contributed data: Full Name Data only shown for fields conflicting with the consensus taxon record Haplopappus phyllocephalus DC. var. megacephalus (Nash) Waterf. [IPNI] Haplopappus phyllocephalus DC. var. megacephalus (Nash) Waterf. [Preliminary Checklist of North American Compositae] [details] LSID urn:lsid:compositae.org:names:74456AE1-E494-4693-8EF8-ADE221496343 [details]