Compositae Working Group (CWG) (2021). Global Compositae Database. Helianthus occidentalis subsp. occidentalis Riddell. Accessed at: https://www.compositae.org/aphia.php?p=taxdetails&id=1154723 on 2024-05-15
Present Inaccurate Introduced: alien Containing type locality
From other sources
Contributed data: Full Name Data only shown for fields conflicting with the consensus taxon record Helianthus occidentalis Riddell ssp. occidentalis [Preliminary Checklist of North American Compositae] Helianthus occidentalis subsp. occidentalis [Tropicos] [details] LSID urn:lsid:compositae.org:names:3E8CA31C-5520-4D89-9C52-C3CC037DE96F [details]