| Name | Astragalus nuttallianus var. imperfectus (Rydberg) Barneby |
| Authorship | (Rydberg) Barneby |
| Rank | Variety |
| Placed in | Astragalus nuttallianus de Candolle |
| Citation | 1942 Leafl. W. Bot. 3(5): 109 |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Astragalus nuttallianus var. imperfectus (Rydberg) Barneby |
| Identification made in | [no date] (4) |
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