Rhododendron zeylanicum Loudon Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Ericales family Ericaceae genus Rhododendron species Rhododendron arboreum Name Homonyms Rhododendron zeylanicum T.J.Booth Rhododendron zeylanicum Loudon