Betula nana var. tundrarum (Perfil.) Elven Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Fagales family Betulaceae genus Betula species Betula nana Name Homonyms Betula nana subsp. tundrarum (Perfil.) Á.Löve & D.Löve Betula nana var. tundrarum (Perfil.) Elven