Helianthus neglectus is a species of sunflower known by the common names neglected sunflower. It is native to the southwestern United States in southeastern New Mexico and West Texas.Biota of North America Program 2014 county distribution map
Helianthus neglectus grows on sand dunes and other sandy soil. This wildflower is an annual herb up to 200 cm (almost 7 ft) tall, growing from a thick, fleshy taproot. One plant produces one to five flower heads containing 21-31 yellow ray florets surrounding 150 or more red or purple disc florets.Flora of North America Helianthus neglectus Heiser, 1958. Neglected sunflower Heiser, Charles Bixler 1958. Rhodora 60(718): 275–279 description in Latin, commentary in English, full-page line drawing on page 276
Helianthus neglectus hybridizes with several other species in the region: H. annuus, H. debilis, and H. petiolaris.
References
External links Lady Bird Johnson Wildflower Center, University of Texas