Rhododendron simsii var. tawadii (Ohwi) Hatus. Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Ericales family Ericaceae genus Rhododendron species Rhododendron eriocarpum Name Homonyms Rhododendron simsii var. tawadii (Ohwi) Hatus.