Taxonomy fide Merrill in Journ. Arn. Arb. 1938, xix. 372,in syn.
Taxonomy fide Merrill in Journ. Arn. Arb. 1938, xix. 372,in syn. [details]
Compositae Working Group (CWG) (2021). Global Compositae Database. Helianthus dodecapetalus Panz.. Accessed at: https://compositae.org/aphia.php?p=taxdetails&id=1143895 on 2024-05-15