Helianthus debilis subsp. cucumerifolius, or cucumberleaf dune sunflower, is a subspecies of the species Helianthus debilis in the genus Helianthus, family Asteraceae.Baldwin, B. G., D. H. Goldman, D. J. Keil, R. Patterson, T. J. Rosatti, and D. H. Wilken, editors. 2012. "The Jepson Manual: vascular plants of California", second edition. University of California press, Berkeley. . pp 344 It is native to the South Central regions of the United States and exists naturalized in every continent except Antarctica.Helianthus debilis ssp. cucumerifolius. Flora of North America.
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