Rhododendron
Rhododendron griersonianum (California, USA)
Rhododendron occidentale (USA)
Rhododendron maddenii subsp. maddenii
Rhododendron ponticum (Cultivated)
Rhododendron dalhousiae
Rhododendron johnstoneanum
Rhododendron × pulchrum ?
Rhododendron veitchianum
Rhododendron formosum var. inaequale
Rhododendron arboreum var. cinnamomeum
Rhododendron arboreum ?
Rhododendron nivale subsp. nivale
Rhododendron grande
Rhododendron triflorum
Rhododendron lepidotum ?
Rhododendron praetervisum (Cultivated- USA)
Rhododendron austrinum (USA)
Rhododendron ferrugineum (Cultivated)
Rhododendron bhutanense