| Name | Astragalus amphioxys var. vespertinus (E. Sheldon) M. E. Jones |
| Authorship | (E. Sheldon) M. E. Jones |
| Rank | Variety |
| Placed in | Astragalus amphioxys A. Gray |
| Citation | 1923 Rev. N.-Amer. Astragalus 215 |
| Holdings | 14 Specimens held in the Harvard University Herbaria identified as Astragalus amphioxys var. vespertinus (E. Sheldon) M. E. Jones |
| Identification made in | [no date] (14) |
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