Betula dahurica f. ovalifolia (Liou) S.L.Tung Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Fagales family Betulaceae genus Betula species Betula dahurica Name Homonyms Betula dahurica var. ovalifolia Liou Betula dahurica f. ovalifolia (Liou) S.L.Tung