York Helianthus annuus L. – common sunflower, girasol – most of United States + Canada Helianthus anomalus S.F.Blake – western sunflower – Nevada, Utah, Arizona, New Mexico Helianthus argophyllus Torr. & A.Gray – silverleaf sunflower – Texas, North Carolina, Florida Helianthus arizonensis R.C.Jacks. – Arizona sunflower – Arizona, New Mexico Helianthus atrorubens L. – purpledisk sunflower – Louisiana, Alabama, Georgia, Florida, South Carolina, North Carolina, Tennessee, Kentucky, Virginia Helianthus bolanderi A.Gray – serpentine sunflower – California, Oregon Helianthus × brevifolius E.Watson – Texas, Indiana, Ohio Helianthus californicus DC. – California sunflower – California Helianthus carnosus Small – lakeside sunflower – Florida Helianthus ciliaris DC. – Texas blueweed – United States: Washington, California, Arizona, New Mexico, Nevada, Utah, Texas, Oklahoma, Colorado, Kansas, Illinois; Mexico: Tamaulipas, Coahuila, Chihuahua, Sonora Helianthus cinereus Small – Missouri, Kentucky, Indiana, Ohio Helianthus coloradensis Cockerell – prairie sunflower – Colorado, New Mexico Helianthus cusickii A.Gray – Cusick's sunflower – Washington, Oregon, California, Idaho, Nevada Helianthus debilis Nutt. – cucumberleaf sunflower – Texas to Maine, Mississippi Helianthus decapetalus L. – thinleaf sunflower – eastern United States; Ontario, Quebec Helianthus deserticola Heiser – desert sunflower – Arizona, Nevada, Utah †Helianthus diffusus Sims – Missouri† Helianthus dissectifolius R.C.Jacks. – Mexico Helianthus divaricatus L. – woodland sunflower or rough woodland sunflower – eastern United States; Ontario, Quebec Helianthus × divariserratus R.W.Long Michigan, Indiana, Ohio, Connecticut Helianthus × doronicoides Lam. – Texas, Oklahoma, Arkansas, Missouri, Iowa, Minnesota, Illinois, Kentucky, Indiana, Ohio, Pennsylvania, Michigan, New Jersey, Virginia Helianthus eggertii Small – Alabama, Kentucky, and Tennessee Helianthus exilis A.Gray – California Helianthus floridanus A.Gray ex Chapm. – Florida sunflower – Louisiana, Alabama, Georgia, Florida, South Carolina, North Carolina Helianthus giganteus L. – giant sunflower – eastern United States; most of Canada Helianthus glaucophyllus D.M.Sm – whiteleaf sunflower – Tennessee, South Carolina, North Carolina Helianthus × glaucus Small – scattered locales in southeastern United States Helianthus gracilentus A.Gray – slender sunflower – California Helianthus grosseserratus M.Martens – sawtooth sunflower – Great Plains, Great Lakes, Ontario, Quebec Helianthus heterophyllus Nutt. – variableleaf sunflower – Coastal plain of Texas to North Carolina Helianthus hirsutus Raf. – hairy sunflower – central and eastern United States, Ontario Helianthus × intermedius R.W.Long – intermediate sunflower – scattered locales in United States Helianthus laciniatus A.Gray – alkali sunflower – United States: Arizona, New Mexico, Texas; Mexico: Coahuila, Nuevo León Helianthus × laetiflorus Pers. – cheerful sunflower, mountain sunflower – scattered in