| Name | Astragalus pinonis var. atwoodii (S. L. Welsh & K. H. Thorne) Barneby & Isely |
| Authorship | (S. L. Welsh & K. H. Thorne) Barneby & Isely |
| Rank | Variety |
| Placed in | Astragalus pinonis M. E. Jones |
| Citation | 1989 Intermount. Fl. [Cronquist et al.] 3(B): 67 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Astragalus pinonis var. atwoodii (S. L. Welsh & K. H. Thorne) Barneby & Isely |
| Identification made in | [no date] (1) |
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