Sunflower (Helianthus) -

• Showy Sunflower (Niveus)
  Showy Sunflower, Algodones Sunflower
• Neglected Sunflower (Neglectus)
  
• Nuttall's Sunflower (Nuttallii)
  Parish's Sunflower, Nuttall's Sunflower, Rydberg's Sunflower
• Fewleaf Sunflower (Occidentalis)
  Fewleaf Sunflower, Fewleaf Sunflower
• Paradox Sunflower (Paradoxus)
  
• Orgyaloides (Orgyaloides)
  
• Manyflower Sunflower (Multiflorus)
  
• Ashy Sunflower (Mollis)
  
• Smooth Sunflower (Laevigatus)
  
• Cheerful Sunflower (Laetiflorus)
  
• Longleaf Sunflower (Longifolius)
  
• Luxurians (Luxurians)
  
• Small Woodland Sunflower (Microcephalus)
  
• Maximilian Sunflower (Maximiliani)
  
• Stiff Sunflower (Pauciflorus)
  Stiff Sunflower, Stiff Sunflower
• Smith's Sunflower (Smithii)
  
• Rosinweed Sunflower (Silphioides)
  
• Schweinitz's Sunflower (Schweinitzii)
  
• Muck Sunflower (Simulans)
  
• Paleleaf Woodland Sunflower (Strumosus)
  
• Verticillatus (Verticillatus)
  
• Jerusalem Artichoke (Tuberosus)
  
• Willowleaf Sunflower (Salicifolius)
  
• Resindot Sunflower (Resinosus)
  
• Porter's Sunflower (Porteri)
  
• Prairie Sunflower (Petiolaris)
  Prairie Sunflower, Prairie Sunflower
• Texas Sunflower (Praecox)
  Texas Sunflower, Texas Sunflower, Runyon's Sunflower
• New Mexico Sunflower (Praetermissus)
  
• Rayless Sunflower (Radula)
  
• Little Sunflower (Pumilus)
  
• Alkali Sunflower (Laciniatus)
  
• Kellermanii (Kellermanii)
  
• California Sunflower (Californicus)
  
• Brevifolius (Brevifolius)
  
• Lakeside Sunflower (Carnosus)
  
• Cinereus (Cinereus)
  
• Cusick's Sunflower (Cusickii)
  
• Texas Blueweed (Ciliaris)
  
• Serpentine Sunflower (Bolanderi)
  
• Purpledisk Sunflower (Atrorubens)
  
• Swamp Sunflower (Angustifolius)
  
• Ambiguus (Ambiguus)
  
• Common Sunflower (Annuus)
  
• Western Sunflower (Anomalus)
  
• Arizona Sunflower (Arizonensis)
  
• Silverleaf Sunflower (Argophyllus)
  
• Cucumberleaf Sunflower (Debilis)
  Cucumberleaf Sunflower, Cucumberleaf Sunflower, Cucumberleaf Sunflower
• Thinleaf Sunflower (Decapetalus)
  
• Slender Sunflower (Gracilentus)
  
• Glaucus (Glaucus)
  
• Sawtooth Sunflower (Grosseserratus)
  
• Variableleaf Sunflower (Heterophyllus)
  
• Intermedius (Intermedius)
  
• Hairy Sunflower (Hirsutus)
  
• Whiteleaf Sunflower (Glaucophyllus)
  
• Giant Sunflower (Giganteus)
  
• Doronicoides (Doronicoides)
  
• Divariserratus (Divariserratus)
  
• Woodland Sunflower (Divaricatus)
  
• Eggert's Sunflower (Eggertii)
  
• Florida Sunflower (Floridanus)
  
• Southeastern Sunflower (Agrestis)