| Fabaceae | * |
Astragalus atratus var. arctus
| E. Sheld. | Minnesota Bot. Stud. 1(3): 160 | 1894 |
| Fabaceae | |
Astragalus atratus var. atratus
| | | |
| Fabaceae | |
Astragalus atratus var. inseptus
| Barneby | Vasc. Pl. Pacif. N.W. 3: 220, pl. [p. 221], f. s.n. [lower left center] | 1961 |
| Fabaceae | |
Astragalus atratus var. mensanus
| M.E. Jones | Proc. Calif. Acad. Sci., ser. 2, 5(18): 665 | 1895 |
| Fabaceae | |
Astragalus atratus var. owyheensis
| (A. Nelson & J.F. Macbr.) M.E. Jones | Rev. N.-Amer. Astragalus 182 | 1923 |
| Fabaceae | |
Astragalus atratus var. panamintensis
| (E. Sheld.) Jeps. | Man. Fl. Pl. Calif. 575 | 1925 |
| Fabaceae | |
Astragalus atratus var. phyllophorus
| M.E. Jones | Contr. W. Bot. 10: 62–63 | 1902 |
| Fabaceae | |
Astragalus atratus var. stenophyllus
| M.E. Jones | Zoë 3(4): 297 | 1893 |