| Galpinsia fendleri | Oenothera fendleri A.Gray sect. Calylophus |
| Galpinsia filifolia | Oenothera filifolia (Eastw.) Tidestr. sect. Calylophus |
| Galpinsia glandulifera | Oenothera tubicula A.Gray sect. Calylophus |
| Galpinsia hartwegii | Oenothera hartwegii Benth. sect. Calylophus |
| Galpinsia lavandulifolia | Oenothera lavandulifolia Torr. & A.Gray sect. Calylophus |