| Calylophus berlandieri Spach | Oenothera berlandieri (Spach) D.Dietr. sect. Calylophus |
| Calylophus drummondiana berlandieri (Spach) Towner & P.H.Raven | Oenothera berlandieri (Spach) D.Dietr. sect. Calylophus |
| Calylophus hartwegii (Benth.) P.H.Raven | Oenothera hartwegii Benth. sect. Calylophus |
| Calylophus hartwegii lavandulifolius (Torr. & A.Gray) Shinners | Oenothera lavandulifolia Torr. & A.Gray sect. Calylophus |
| Calylophus lavandulifolia (Torr. & A.Gray) Small | Oenothera lavandulifolia Torr. & A.Gray sect. Calylophus |
| Calylophus serrulatus (Nutt.) P.H.Raven | Oenothera serrulata Nutt. sect. Calylophus |
| Calylophus tubicula (A.Gray) P.H.Raven | Oenothera tubicula A.Gray sect. Calylophus |