| Fabaceae | |
Astragalus nuttallianus var. acutirostris
| (S. Watson) Jeps. | Fl. Calif. 2(4): 379–380 | 1936 |
| Fabaceae | |
Astragalus nuttallianus var. austrinus
| Barneby | | |
| Fabaceae | |
Astragalus nuttallianus var. austrinus
| (Small) Barneby | Veg. Fl. Sonoran Desert 1: 709 | 1964 |
| Fabaceae | |
Astragalus nuttallianus var. canescens
| Torrey & A. Gray ex S. Watson | Bibl. Index N. Amer. Bot. 1: 198 | 1878 |
| Fabaceae | |
Astragalus nuttallianus var. cedrosensis
| M.E. Jones | Rev. N.-Amer. Astragalus 270 | 1923 |
| Fabaceae | |
Astragalus nuttallianus var. enneajugus
| M.E. Jones | Contr. W. Bot. 8: 22 | 1898 |
| Fabaceae | |
Astragalus nuttallianus var. imperfectus
| (Rydb.) Barneby | Leafl. W. Bot. 3(5): 109 | 1942 |
| Fabaceae | |
Astragalus nuttallianus var. leptocarpoides
| M.E. Jones | Contr. W. Bot. 8: 22 | 1898 |
| Fabaceae | |
Astragalus nuttallianus var. macilentus
| Barneby | Mem. New York Bot. Gard. 13(2): 1065 | 1964 |
| Fabaceae | |
Astragalus nuttallianus var. macilentus
| (Small) Barneby | Mem. New York Bot. Gard. 13: 1065 | 1964 |
| Fabaceae | |
Astragalus nuttallianus var. micranthiformis
| Barneby | Mem. New York Bot. Gard. 13: 1064, map 150 | 1964 |
| Fabaceae | |
Astragalus nuttallianus var. micronthiformis
| Barneby | | |
| Fabaceae | |
Astragalus nuttallianus var. nuttallianus
| | | |
| Fabaceae | |
Astragalus nuttallianus var. piliferus
| Barneby | Leafl. W. Bot. 3: 110 | 1942 |
| Fabaceae | |
Astragalus nuttallianus var. piliferus
| Barneby | Leafl. W. Bot. 3(5): 110–111, pl. 1, f. F, 1–3 | 1942 |
| Fabaceae | |
Astragalus nuttallianus var. pleianthus
| (Shinners) Barneby | Mem. New York Bot. Gard. 13: 1066 | 1964 |
| Fabaceae | |
Astragalus nuttallianus var. pumilus
| A. Gray | Smithsonian Contr. Knowl. 3(5): 52 | 1852 |
| Fabaceae | |
Astragalus nuttallianus var. quadrilateralis
| M.E. Jones | Contr. W. Bot. 8: 22 | 1898 |
| Fabaceae | |
Astragalus nuttallianus var. trichocarpus
| Torr. & A. Gray | Fl. N. Amer. 1(2): 334–335 | 1838 |
| Fabaceae | |
Astragalus nuttallianus var. zapatanus
| Barneby | Field & Lab. 24(1): 36–37 | 1956 |