Compositae Working Group (CWG) (2021). Global Compositae Database. Helianthus occidentalis var. occidentalis Cronquist. Accessed at: https://www.compositae.org/aphia.php?p=taxdetails&id=1234310 on 2025-04-01
original description(1945). Rhodora 47 page(s): 399 [details]
Unreviewed
Contributed data: Full Name Data only shown for fields conflicting with the consensus taxon record Helianthus occidentalis Riddell var. occidentalis Cronquist [IPNI] Helianthus occidentalis var. occidentalis [Tropicos] [details] LSID urn:lsid:compositae.org:names:D0CADFE4-5CDB-4CC6-8906-A99862C7206B [details]