Compositae Working Group (CWG) (2024). Global Compositae Database. Helianthus attenuatus E.Watson. Accessed at: https://www.compositae.org/gcd/aphia.php?p=taxdetails&id=1144338 on 2025-03-26
original description(1929). Pap. Michigan Acad. Sci. 9 page(s): 416 [details]
Unreviewed
Contributed data: Authors Data only shown for fields conflicting with the consensus taxon record E. Watson [Tropicos] [details] Contributed data: Full Name Data only shown for fields conflicting with the consensus taxon record Helianthus attenuatus E. Watson [Tropicos] [details] Contributed data: Published Data only shown for fields conflicting with the consensus taxon record Papers of the Michigan Academy of Science, Arts and Letters 9: [Tropicos] [details] LSID urn:lsid:compositae.org:names:B488942A-6F67-4BEB-A69A-DC85D363B865 [details]