| Orophaca aretioides (M.E.Jones) Rydb. | Astragalus aretioides (M.E.Jones) Barneby |
| Orophaca barrii (Barneby) Isely | Astragalus barrii Barneby trib. Galegeae |
| Orophaca caespitosa (Nutt.) Britton | Astragalus spatulatus E.Sheld. |
| Orophaca caespitosa (Nutt.) Rydb. | Astragalus gilviflorus E.Sheld. trib. Galegeae |
| Orophaca hyalina (M.E.Jones) Isely | Astragalus hyalinus M.E.Jones |
| Orophaca proimantha (Barneby) Isely | Astragalus proimanthus Barneby |
| Orophaca sericea (Nutt.) Brittom | Astragalus sericoleucus A.Gray trib. Galegeae |
| Orophaca tridactylica (A.Gray) Rydb. | Astragalus tridactylicus A.Gray trib. Galegeae |