| Geoprumnon crassicarpum (Nutt.) Rydb. | Astragalus crassicarpus Nutt. |
| Geoprumnon plattense (Nutt.) Rydb. | Astragalus plattensis Nutt. trib. Galegeae |
| Geoprumnon tennesseensis (A.Gray ex Chapm.) Rydb. | Astragalus tennesseensis A.Gray ex Chapm. |
| Geoprumnon crassicarpum (Nutt.) Rydb. | Astragalus crassicarpus Nutt. |
| Geoprumnon plattense (Nutt.) Rydb. | Astragalus plattensis Nutt. trib. Galegeae |
| Geoprumnon tennesseensis (A.Gray ex Chapm.) Rydb. | Astragalus tennesseensis A.Gray ex Chapm. |