| Name | Astragalus canadensis var. mortonii (Nuttall) S. Watson |
| Authorship | (Nuttall) S. Watson |
| Rank | Variety |
| Placed in | Astragalus canadensis Linnaeus |
| Citation | 1871 Botany [Fortieth Parallel] 68 |
| Holdings | 71 Specimens held in the Harvard University Herbaria identified as Astragalus canadensis var. mortonii (Nuttall) S. Watson |
| Identification made in | [no date] (71) |
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