| Galpinsia Britton, 1894 |
| Galpinsia greggii (A. Gray) Small, 1896 |
| Gaura L., 1753 |
| Gaura (L.) W.L. Wagner & Hoch, 2007 |
| Gaura (L.) W.L. Wagner & Hoch, 2007 |
| Gaura boquillensis P.H. Raven & D.P. Greg., 1973 |
| Gaura bracteata Ser., 1828 |
| Gaura calcicola P.H. Raven & D.P. Greg., 1973 |
| Gaura coccinea Pursh, 1813 |
| Gaura drummondii (Spach) Torr. & A. Gray, 1840 |
| Gaura epilobioides Kunth, 1823 |
| Gaura fruticosa Loefl., 1758 |
| Gaura glabra Lehm., 1830 |
| Gaura gracilis Wooton & Standl., 1913 |
| Gaura grandiflora Rose, 1909 |
| Gaura hexandra Ortega, 1797 |
| Gaura hexandra subsp. gracilis (Wooton & Standl.) P.H. Raven & D.P. Greg., 1973 |
| Gaura mckelveyae (Munz) P.H. Raven & D.P. Greg., 1973 |
| Gaura mollis James, 1823 |
| Gaura mutabilis Cav., 1795 |