Rhododendron subg. Tsutsuji
 Rhododendron subgenus Tsutsuji (known also as Tsutsusi) is a subgenus of the genus Rhododendron commonly referred to as evergreen azaleas. Native to Japan they are of high cultural importance to the Japanese. Among the species in this genus lie the largest flowering azaleas.[citation needed]The subgenus includes two sections:Rhododendron sect. BrachycalyxRhododendron sect. Tsutsusi↑ ↑