Astragalus frigidus subsp. americanus (Hook.) Hultén Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Fabales family Fabaceae genus Astragalus species Astragalus americanus Name Homonyms Astragalus frigidus var. americanus (Hook.) S.Watson Astragalus frigidus subsp. americanus (Hook.) Hultén