| Name | Astragalus whitneyi var. siskiyouensis (P. A. Rydberg) Barneby | 
| Authorship | (P. A. Rydberg) Barneby | 
| Rank | Variety | 
| Placed in | Astragalus whitneyi A. Gray | 
| Holdings | 9 Specimens held in the Harvard University Herbaria identified as Astragalus whitneyi var. siskiyouensis (P. A. Rydberg) Barneby | 
| Identification made in | [no date] (7), 1982 (2) | 
