| Fabaceae | |
Astragalus agrestis var. bracteatus
| (Osterh.) M.E. Jones | Contr. W. Bot. 10: 87 | 1902 |
| Fabaceae | |
Astragalus agrestis var. polyspermus
| (Torr. & A. Gray) M.E. Jones | Contr. W. Bot. 10: 65 | 1902 |
| Fabaceae | |
Astragalus agrestis fo. virgultulus
| (E. Sheld.) B. Boivin | Naturaliste Canad. 87(2): 28 | 1960 |
| Fabaceae | ** |
Astragalus agrestis fo. virgultulus
| (E. Sheld.) Scoggan | Flora Canada 52 | 1978 |