Betula humilis Marshall Dataset GBIF Backbone Taxonomy Rank SPECIES Published in Arbust. Amer.: 19 (1785) Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Fagales family Betulaceae genus Betula species Betula lenta Name Homonyms Betula humilis Schrank Betula ×humilis Fr. ex Regel Betula humilis Marshall Betula ×humilis Fr.