Marts 2023
Rhododendron racemosum Franch.
Rhododendron radendum Fang
Rhododendron radians (håret) J.J.Sm.
Rhododendron radians (uhåret)J.J.Sm.
Rhododendron ramsdenianum Cowan
Rhododendron ravum
Rhododendron recurvoides Tagg & Kingdon-Ward
Rhododendron redowskianum Maxim.
Rhododendron reticulatum D .Don
Rhododendron rex H .Lév.
Rhododendron rex ssp. fictolacteum
Rhododendron rex ssp. fictolacteum f. miniforme
Rhododendron rigidum (GFP) Franch.
Rhododendron rigidum (AC) Franch.
Rhododendron riparioides (Cullen) Cubey
Rhododendron ripense Makino
Rhododendron ririei Hemsl. & E.H.Wilson
Rhododendron roseatum Hutch.
Rhododendron rothschildii Davidian
Rhododendron rothschildii Davidian
Rhododendron roxieanum var. roxieanum Forrest
Rhododendron roxieanum var. roxieanum Forrest
Rhododendron roxieanum var. aischropeplum
Rhododendron roxieanum var. coccinopeplum
Rhododendron roxieanum var. cucullatum
Rhododendron roxieanum var. oreonastes
Rhododendron roxieanum var. parvum
Rhododendron roxieanum var. recurvum
Rhododendron roxieoides
Rhododendron rubiginosum Franch.
Rhododendron rubiginosum var. desquamatum
Rhododendron rubiginosum var. ptilostylum
Rhododendron rubropilosum Hayata
Rhododendron rufescens Franch.
Rhododendron rufohirtum Hand.-Mazz.
Rhododendron rufum Batalin
Rhododendron rufum var. glandulosum
Rhododendron rupicola var. achroanthum
Rhododendron rupicola var. chryseum
Rhododendron rupicola var. muliense
Rhododendron rupicola var. rupicola
Rhododendron russatum Balf.f. & Forrest