eastern and central United States; Canada Helianthus laevigatus Torr. & A.Gray – smooth sunflower – Georgia, South Carolina, North Carolina, Virginia, Maryland, West Virginia Helianthus lenticularis Douglas ex Lindl. California, Texas Helianthus longifolius Pursh – longleaf sunflower – Alabama, Georgia, North Carolina Helianthus × luxurians (E.Watson) E.Watson – Great Lakes region Helianthus maximiliani Schrad. – Maximillian sunflower – much of United States and Canada Helianthus membranifolius Poir. – French Guiana Helianthus microcephalus Torr. & A.Gray – eastern United States Helianthus mollis Lam. – downy sunflower, ashy sunflower – Ontario, eastern and central United States Helianthus multiflorus L. – manyflower sunflower – Ohio Helianthus navarri Phil. – Chile Helianthus neglectus Heiser – neglected sunflower – New Mexico, Texas Helianthus niveus (Benth.) Brandegee – showy sunflower – United States: California, Arizona; Mexico: Baja California, Baja California Sur Helianthus nuttallii Torr. & A.Gray – western and central United States, Canada Helianthus occidentalis Riddell – fewleaf sunflower, western sunflower – Great Lakes region, scattered in southeastern United States Helianthus × orgyaloides Cockerell – Colorado, Kansas Helianthus paradoxus Heiser – paradox sunflower – Utah, New Mexico, Texas Helianthus pauciflorus Nutt. – stiff sunflower – central United States, Canada Helianthus petiolaris Nutt. – prairie sunflower, lesser sunflower – much of United States, Canada Helianthus porteri (A.Gray) Pruski – Porter's sunflower – Alabama, Georgia, South Carolina, North Carolina Helianthus praecox Engelm. & A.Gray Texas sunflower – Texas †Helianthus praetermissus – New Mexico sunflower – New Mexico† Helianthus pumilus Nutt. – little sunflower – Colorado, Wyoming, Montana, Utah, Idaho Helianthus radula (Pursh) Torr. & A.Gray – rayless sunflower – Louisiana, Mississippi, Alabama, Georgia, South Carolina, Florida Helianthus resinosus Small – resindot sunflower – Mississippi, Alabama, Georgia, South Carolina, North Carolina, Florida Helianthus salicifolius A.Dietr. – willowleaf sunflower – Texas, Oklahoma, Kansas, Missouri, Illinois, Wisconsin, Ohio, Pennsylvania, New York Helianthus sarmentosus Rich. – French Guiana Helianthus scaberrimus Elliott – South Carolina Helianthus schweinitzii Torr. & A.Gray – Schweinitz's sunflower – South Carolina, North Carolina Helianthus silphioides Nutt. – rosinweed sunflower – Lower Mississippi Valley Helianthus simulans E.Watson – muck sunflower – southeastern United States Helianthus smithii Heiser – Smith's sunflower – Alabama, Georgia, Tennessee Helianthus speciosus Hook. – Michoacán Helianthus strumosus L. – eastern and central United States, Canada Helianthus subcanescens (A.Gray) E.Watson – Manitoba, north-central United States Helianthus subtuberosus Bourg. Helianthus tuberosus L. – Jerusalem artichoke, sunchoke, earth-apple, topinambur – much of United States and Canada Helianthus verticillatus