| 1 | Helianthus | angustifolius | Swamp Sunflower | Aster Family | Asteraceae | Magnoliopsida |
| 2 | Helianthus | annuus | Common Sunflower | Aster Family | Asteraceae | Magnoliopsida |
| 3 | Helianthus | debilis ssp. cucumerifolius | Cucumberleaf Sunflower | Aster Family | Asteraceae | Magnoliopsida |
| 4 | Helianthus | decapetalus | Thin-leaved Sunflower | Aster Family | Asteraceae | Magnoliopsida |
| 5 | Helianthus | divaricatus | Woodland Sunflower | Aster Family | Asteraceae | Magnoliopsida |
| 6 | Helianthus | giganteus | Giant Sunflower | Aster Family | Asteraceae | Magnoliopsida |
| 7 | Helianthus | grosseserratus | Saw-toothed Sunflower | Aster Family | Asteraceae | Magnoliopsida |
| 8 | Helianthus | hirsutus | Hairy Sunflower | Aster Family | Asteraceae | Magnoliopsida |
| 9 | Helianthus | laevigatus | Smooth Sunflower | Aster Family | Asteraceae | Magnoliopsida |
| 10 | Helianthus | maximiliani | Maximilian Sunflower | Aster Family | Asteraceae | Magnoliopsida |
| 11 | Helianthus | mollis | Ashy Sunflower | Aster Family | Asteraceae | Magnoliopsida |
| 12 | Helianthus | occidentalis ssp. occidentalis | Few-leaved Sunflower | Aster Family | Asteraceae | Magnoliopsida |
| 13 | Helianthus | pauciflorus | Stiff Sunflower | Aster Family | Asteraceae | Magnoliopsida |
| 14 | Helianthus | strumosus | Pale-leaved Woodland Sunflower | Aster Family | Asteraceae | Magnoliopsida |
| 15 | Helianthus | tuberosus | Jerusalem Artichoke | Aster Family | Asteraceae | Magnoliopsida |