Rhododendron canescens var. subglabrum Rehder Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Ericales family Ericaceae genus Rhododendron species Rhododendron canescens Name Homonyms Rhododendron canescens var. subglabrum Rehder Rhododendron canescens f. subglabrum Rehder