| Hartmannia berlandieri (Spach) Rose | Oenothera berlandieri (Spach) D.Dietr. sect. Calylophus |
| Hartmannia boliviana Rusby | Oenothera multicaulis Ruiz & Pav. sect. Xanthocoryne |
| Hartmannia dissecta (A.Gray ex S.Watson) Rose | Oenothera dissecta A.Gray ex S.Watson sect. Leucocoryne |
| Hartmannia domingensis Urb. & Ekman | Oenothera kunthiana (Spach) Munz |
| Hartmannia havardii (S.Watson) Rose | Oenothera havardii S.Watson sect. Paradoxus |
| Hartmannia kunthiana Spach | Oenothera kunthiana (Spach) Munz |
| Hartmannia montana Rose | Oenothera orizabae W.L.Wagner sect. Leucocoryne |
| Hartmannia parviflora Spach | Oenothera kunthiana (Spach) Munz |
| Hartmannia rosea (Lâ€�HĂ©r. ex Aiton) G.Don | Oenothera rosea L‘Hér. ex Aiton sect. Hartmannia |
| Hartmannia speciosa (Nutt.) Small | Oenothera speciosa Nutt. sect. Hartmannia |