| Calylophus berlandieri | Oenothera berlandieri (Spach) Steud. |
| Calylophus hartwegii | Oenothera hartwegii Benth. sect. Calylophus |
| Calylophus lavandulifolia | Oenothera lavandulifolia Torr. & A.Gray sect. Calylophus |
| Calylophus nuttallii | Oenothera serrulata Nutt. sect. Calylophus |
| Calylophus tubicula | Oenothera tubicula A.Gray sect. Calylophus |