Rhododendron subsect. Scabrifolium Rhododendron subsect. Ledum Rhododendron subsect. Camelliiflora Rhododendron subsect. Caroliniana Rhododendron subsect. Genestieriana Rhododendron subsect. Lapponica Rhododendron subsect. Micrantha Rhododendron subsect. Rhododendron Rhododendron subsect. Triflora Rhododendron heatherae Rhododendron subsect. Afghanica Rhododendron subsect. Fragariflora Rhododendron subsect. Monantha Rhododendron subsect. Rhodorastrum Rhododendron subsect. Trichoclada Rhododendron subsect. Virgatum Rhododendron subsect. Baileya Rhododendron subsect. Boothia Rhododendron subsect. Campylogyna Rhododendron subsect. Cinnabarina Rhododendron subsect. Edgeworthia Rhododendron subsect. Glauca Rhododendron subsect. Heliolepida Rhododendron subsect. Lepidota Rhododendron subsect. Maddenia Rhododendron subsect. Moupinensia Rhododendron subsect. Saluenensia Rhododendron subsect. Tephropepla Rhododendron subsect. Uniflora
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024