Astragalus adsurgens subsp. robustior (Hooker) S.L. Welsh
Astragalus adsurgens subsp. robustior (Hooker) S.L. Welsh is a synonym sensu FNA Ed. Comm., 2023b of:
Astragalus laxmannii var. robustior (Hooker) Barneby & S.L. Welsh, an accepted variety name sensu FNA Ed. Comm., 2023b.