Betula pubescens f. murithii (Gaudin) Rouy, 1912 Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Fagales family Betulaceae genus Betula species Betula pubescens Name Homonyms Betula pubescens subsp. murithii (Gaudin ex Regel) Nyman Betula pubescens var. murithii (Gaudin ex Regel) Gremli