| Amsonia brevfolia | Amsonia tomentosa Torr. & Frém. trib. Vinceae |
| Amsonia eastwoodiana | Amsonia arenaria Standl. trib. Vinceae |
| Amsonia filiformis | Amsonia arenaria Standl. trib. Vinceae |
| Amsonia lanata | Amsonia tomentosa Torr. & Frém. trib. Vinceae |
| Amsonia latifolia | Amsonia jonesii Woodson trib. Vinceae |