Index

R. 'Royston Reverie' Rhododendron Hybrid R. auriculatum X R. 'Fabia Group' Hybridized By: Greig, E,J. & M. More information and pictures
R. 'Royston Rose' Rhododendron Hybrid ? X ? Hybridized By: Greig, E,J. & M. More information
R. 'Royston Summertime' Rhododendron Hybrid ? X ? Hybridized By: Greig, E,J. & M. More information
R. 'Roza' Azalea Hybrid ? X ? More information and pictures
R. 'Roza Bonheur' Azalea Hybrid ? X ? Hybridized By: Van der Cruyssen, E. More information
R. 'Roza Stevenson' Rhododendron Hybrid ? X ? Hybridized By: Stevenson, J.B. More information and pictures
R. 'Rozamarie Group' Rhododendron Cultivar group ? X ? Hybridized By: Stevenson, J.B. More information
R. 'Rozanne Waterer' Azalea Hybrid ? X ? More information
R. 'Rozie Group' Rhododendron Cultivar group ? X ? Hybridized By: Stevenson, J.B. More information
R. 'Ruach' Rhododendron Hybrid ? X ? Hybridized By: Ogdon, B.J. More information
R. rubellum Species Subgenus: Rhododendron Section: Vireya Subsection: Euvireya More information
R. 'Rubens' Azalea Hybrid ? X ? Hybridized By: Verschaffelt, L More information
R. 'Rubens' Azalea Hybrid ? X ? Hybridized By: Vuylsteke, C. More information
R. 'Rubens' Rhododendron Hybrid ? X ? Hybridized By: Byls, J. More information
R. 'Rubens' Rhododendron Hybrid ? X ? Hybridized By: Waterer (Bagshot) More information
R. 'Rubicon' Rhododendron Hybrid R. arboreum ssp nilagiricum 'Noyo Chief' X R. 'Kilimanjaro' Hybridized By: Gordon, R.C More information and pictures
R. rubiginosum Species Subgenus: Rhododendron Section: Rhododendron Subsection: Heliolepida More information and pictures
*R. rubiginosum* Desquamatum Group Species Subgenus:** Rhododendron Section: Rhododendron Subsection: Heliolepida More information
*R. rubiginosum* 'Finch' Rhododendron Species Selection Selected By:** Henny, Rudolph More information
*R. rubiginosum* 'Rosey Ball'** Rhododendron Species Selection More information
R. rubiginosum var leclerei Species Subgenus: Rhododendron Section: Rhododendron Subsection: Heliolepida More information
R. rubiginosum var ptilostylum Species Subgenus: Rhododendron Section: Rhododendron Subsection: Heliolepida More information
*R. rubiginosum* 'Wakehurst'** Rhododendron Species Selection More information
R. 'Rubina' Vireya Hybrid R. Tropic Glow X R. culminicola var culminicola More information
R. 'Rubina Group' Rhododendron Cultivar group ? X ? More information
R. 'Rubina Group x Fabia Group' Rhododendron Hybrid R. 'Rubina Group' X R. 'Fabia Group' More information
R. rubineiflorum Species Subgenus: Rhododendron Section: Vireya Subsection: Euvireya More information and pictures
R. 'Rubinetta' Azalea Hybrid R. 'Mother's Day' X R. 'Kermesinum' Hybridized By: Hachmann, Hans More information and pictures
R. 'Rubinetta x Vuyk's Scarlet' Azalea Hybrid R. 'Rubinetta' X R. 'Vuyk's Scarlet' More information
R. 'Rubinfeuer' Rhododendron Hybrid ? X ? Hybridized By: Backhus, A.W. More information
R. 'Rubinstern' Azalea Hybrid R. 'Mother's Day' X R. 'Kermesinum' Hybridized By: Hachmann, Hans More information and pictures
R. 'Rubinstern X Red Pimpernel x Kermesinum' Azalea Hybrid R. 'Rubinstern' X R. 'Red Pimpernel x Kermesinum' More information
R. 'Rubinstern x Rubinetta' Azalea Hybrid R. 'Rubinstern' X R. 'Rubinetta' More information
R. 'Rubis de Meirelbeke' Azalea Hybrid ? X ? More information
R. rubrobracteum Species Subgenus: Rhododendron Section: Vireya Subsection: Euvireya More information
R. rubropilosum Species Subgenus: Tsutsusi Section: Tsutsusi More information and pictures
R. 'Rubrum Aurantiacum' Azalea Hybrid ? X ? Hybridized By: van Geert, A. More information
R. 'Rubrum Elegans' Azalea Hybrid ? X ? Hybridized By: Van Houtte, L. B. (Louis Benoit) More information
R. 'Ruby' Vireya Hybrid R. 'Jasminiflorum Carminatum' X R. multicolor var curtisii More information
R. 'Ruby Anne' Vireya Hybrid R. anagalliflorum X R. rubineiflorum More information
R. 'Ruby Bells' Vireya Hybrid R. konori x laetum X R. commonae More information
R. 'Ruby Bowman' Rhododendron Hybrid R. fortunei ssp fortunei X R. 'Lady Bligh' Hybridized By: Bowman, R.F. More information and pictures
R. 'Ruby Hart' Rhododendron Hybrid R. 'Carmen Group x Elizabeth Group' X R. elliottii Hybridized By: Whitney, William E. More information and pictures
R. 'Ruby Ice' Rhododendron Hybrid R. 'Dopey' X R. 'Doctor Tom Ring' Hybridized By: Delp Weldon E. More information
R. 'Rubīns' Azalea Hybrid R. kosterianum X R. canescens Hybridized By: Kondratovičs, Rihard More information
R. 'Ruddy Red Max' Rhododendron Hybrid ? X ? More information
R. 'Rudolf Abel' Rhododendron Hybrid ? X ? Hybridized By: Firma Seidel More information
R. 'Rudolph' Rhododendron Hybrid ? X ? Hybridized By: Liebig, L.L. More information
R. 'Rudolph's Orange' Rhododendron Hybrid R. 'Fabia Group' X R. 'Temple Belle Group' Hybridized By: Henny, Rudolph More information
R. 'Rudy's Fairytail' Rhododendron Hybrid ? X ? More information

Index

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R. 'Royston Reverie'

Rhododendron Hybrid

R. auriculatum X R. 'Fabia Group'

R. 'Royston Rose'

Rhododendron Hybrid

? X ?

R. 'Royston Summertime'

Rhododendron Hybrid

? X ?

R. 'Roza'

Azalea Hybrid

? X ?

R. 'Roza Bonheur'

Azalea Hybrid

? X ?

R. 'Roza Stevenson'

Rhododendron Hybrid

? X ?

R. 'Rozamarie Group'

Rhododendron Cultivar group

? X ?

R. 'Rozanne Waterer'

Azalea Hybrid

? X ?

R. 'Rozie Group'

Rhododendron Cultivar group

? X ?

R. 'Ruach'

Rhododendron Hybrid

? X ?

R. rubellum

Species

R. 'Rubens'

Azalea Hybrid

? X ?

R. 'Rubens'

Azalea Hybrid

? X ?

R. 'Rubens'

Rhododendron Hybrid

? X ?

R. 'Rubens'

Rhododendron Hybrid

? X ?

R. 'Rubicon'

Rhododendron Hybrid

R. arboreum ssp nilagiricum 'Noyo Chief' X R. 'Kilimanjaro'

R. rubiginosum

Species

R. rubiginosum Desquamatum Group

Species

R. rubiginosum 'Finch'

Rhododendron Species Selection

R. rubiginosum 'Rosey Ball'

Rhododendron Species Selection

R. rubiginosum var leclerei

Species

R. rubiginosum var ptilostylum

Species

R. rubiginosum 'Wakehurst'

Rhododendron Species Selection

R. 'Rubina'

Vireya Hybrid

R. Tropic Glow X R. culminicola var culminicola

R. 'Rubina Group'

Rhododendron Cultivar group

? X ?

R. 'Rubina Group x Fabia Group'

Rhododendron Hybrid

R. 'Rubina Group' X R. 'Fabia Group'

R. rubineiflorum

Species

R. 'Rubinetta'

Azalea Hybrid

R. 'Mother's Day' X R. 'Kermesinum'

**R. rubiginosum Desquamatum Group**

**R. rubiginosum 'Finch'**

**R. rubiginosum 'Rosey Ball'**

**R. rubiginosum 'Wakehurst'**