Compositae Working Group (CWG) (2021). Global Compositae Database. Helianthus petiolaris var. patens Rydb.. Accessed at: https://www.compositae.org/aphia.php?p=taxdetails&id=1228737 on 2025-03-28
original description(1894). Mem. Torrey Bot. Club 5(22): 334 (1894) page(s): 334 [details]
Unreviewed
Contributed data: Full Name Data only shown for fields conflicting with the consensus taxon record Helianthus petiolaris Nutt. var. patens Rydb. [Flora del Conosur] [details] LSID urn:lsid:compositae.org:names:6EE2D454-F67D-40A1-8DD7-4C1DC22B0600 [details]