Betula alba var. pumila Zanoni Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Fagales family Betulaceae genus Betula species Betula pubescens Name Homonyms Betula alba var. pumila L. Betula alba var. pumila Zanoni ex Murray Betula alba var. pumila Zanoni