Astragalus americanus(Hook.) M. E. Jones (redirected from: Astragalus frigidus var. americanus (Hook.) S.Watson)
Family: Fabaceae
American Milk-Vetch
[Astragalus americanus f. pallescens J.Rousseau, moreAstragalus americanus f. williamsii J.Rousseau, Astragalus frigidus var. americanus (Hook.) S.Watson, Astragalus frigidus var. gaspensis (J.Rousseau) Fernald, Phaca americana Rydb., Phaca frigida var. americana Hook.]