Rhododendron caucasicum var. bicolor Verschaff. Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Ericales family Ericaceae genus Rhododendron species Rhododendron caucasicum Name Homonyms Rhododendron caucasicum var. bicolor Verschaff. ex Van Geert Rhododendron caucasicum var. bicolor Verschaff.