Position in a system
| system | Vitae - living organisms |
| domain | Eukaryota Whittaker & Margulis, 1978 - lifeforms with nucletic cells |
| superregnum | Bikonta - bikonts |
| Corticata | |
| Archaeplastida | |
| kingdom | Plantae Haeckel - plants |
| divisio | Magnoliophyta Cronquist, Takht. & W.Zimm. - flowering plants |
| class | Rosopsida Batsch - eudicots |
| order | Fabales Bromhead |
| family | Fabaceae Lindl. - Legumes |
| subfamily | Faboideae Rudd |
| tribus | Trifolieae (Bronn) Endl. |
| genus | Medicago L. - alfalfa |
| species | Medicago rigida (Boiss. & Balansa) E. Small |