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Subgenus: Rhododendron Section: Vireya Subsection: Euvireya
Subgenus: Rhododendron Section: Rhododendron Subsection: Baileya
Subgenus: Hymenanthes Section: Pontica Subsection: Selensia
Subgenus: Hymenanthes Section: Pontica Subsection: Grandia
Subgenus: Hymenanthes Section: Pontica Subsection: Taliensia
Subgenus: Hymenanthes Section: Pontica Subsection: Barbata
Subgenus: Hymenanthes Section: Pontica Subsection: Falconera
Subgenus: Hymenanthes Section: Pontica Subsection: Neriiflora
Subgenus: Rhododendron Section: Rhododendron Subsection: Boothia
Subgenus: Rhododendron Section: Rhododendron Subsection: Glauca
Subgenus: Hymenanthes Section: Pontica Subsection: Pontica
Selected By: Hobbie, Dietrich G.
Subgenus: Rhododendron Section: Rhododendron Subsection: Heliolepida
Subgenus: Rhododendron Section: Rhododendron Subsection: Micrantha
Subgenus: Hymenanthes Section: Pontica Subsection: Irrorata
Subgenus: Tsutsusi Section: Tsutsusi
Subgenus: Rhododendron Section: Rhododendron Subsection: Lapponica
Selected By: Greer Gardens
Subgenus: Rhododendron Section: Rhododendron Subsection: Maddenia
Selected By: Mackenzie, E. Mrs