Compositae Working Group (CWG) (2025). Global Compositae Database. Heliopsis helianthoides var. gracilis (Nutt.) Gandhi & R.D.Thomas. Accessed at: https://www.compositae.org/gcd/aphia.php?p=taxdetails&id=1231747 on 2025-09-13
Contributed data: Full Name Data only shown for fields conflicting with the consensus taxon record Heliopsis helianthoides Britton, Sterns & Poggenb. var. gracilis (Nutt.) Gandhi & R.D.Thomas [IPNI] [details] LSID urn:lsid:compositae.org:names:F05F3525-D551-45F4-845B-7D75DA186606 [details]