| Phellopterus camporum | Vesper bulbosus (A.Nelson) R.L.Hartm. & G.L.Nesom |
| Phellopterus glaucus | Cymopterus glaucus Nutt. |
| Phellopterus jonesii | Cymopterus coulteri (M.E.Jones) Mathias |
| Phellopterus macrocarpus | Vesper montanus (Torr. & A.Gray) R.L.Hartm. & G.L.Nesom |
| Phellopterus macrorhizus | Vesper macrorhizus (Buckley) R.L.Hartm. & G.L.Nesom |
| Phellopterus montanus | Vesper montanus (Torr. & A.Gray) R.L.Hartm. & G.L.Nesom |
| Phellopterus multinervatus | Vesper multinervatus (J.M.Coult. & Rose) R.L.Hartm. |
| Phellopterus purpurascens | Vesper purpurascens (A.Gray) R.L.Hartm. & G.L.Nesom |