Synonyms
Rhododendron weyrichii f. purpuriflorum T.Yamaz.
Rhododendron weyrichii f. albiflorum T.Yamaz.
Rhododendron shikokianum Makino
Azalea weyrichii (Maxim.) Kuntze
Rhododendron farrerae var. weyrichii (Maxim.) Diels
Rhododendron shikokianum var. nudistemon Koidz.
Rhododendron weyrichii var. psilostylum Nakai
Rhododendron weyrichii var. purpuriflorum (T.Yamaz.) Minamit.