Rhododendron subsect. arborea
Rhododendron subsect. argyrophylla
Rhododendron subsect. auriculata
Rhododendron subsect. barbata
Rhododendron subsect. campanulata
Rhododendron subsect. campylocarpa
Rhododendron subsect. falconera
Rhododendron subsect. fortunea
Rhododendron subsect. fulgensia
Rhododendron subsect. fulva
Rhododendron subsect. glischra
Rhododendron subsect. grandia
Rhododendron subsect. griersoniana
Rhododendron subsect. irrorata
Rhododendron subsect. lanata
Rhododendron subsect. maculifera
Rhododendron subsect. neriiflora
Rhododendron subsect. parishia
Rhododendron subsect. pontica
Rhododendron subsect. selensia
Rhododendron subsect. taliensia
Rhododendron subsect. thomsonia
Rhododendron subsect. venatora
Rhododendron subsect. williamsiana