Compositae Working Group (CWG) (2021). Global Compositae Database. Helianthus giganteus subsp. alienus (E.Watson) Long. Accessed at: https://www.compositae.org/aphia.php?p=taxdetails&id=1218338 on 2024-05-19
Contributed data: Authors Data only shown for fields conflicting with the consensus taxon record (E.E. Watson) R.W. Long [Preliminary Checklist of North American Compositae] [details] Contributed data: Full Name Data only shown for fields conflicting with the consensus taxon record Helianthus giganteus L. ssp. alienus (E.E. Watson) R.W. Long [Preliminary Checklist of North American Compositae] Helianthus giganteus L. subsp. alienus (E.Watson) Long [IPNI] [details] LSID urn:lsid:compositae.org:names:3566E40C-6DD5-4E2B-A792-4440D494AC18 [details]