Rhododendron Index

R. 'Royston Reverie'

Rhododendron Hybrid

R. auriculatum x R. 'Fabia Group'

Hybridized By: Greig, E,J. & M.

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R. 'Royston Rose'

Rhododendron Hybrid

? x ?

Hybridized By: Greig, E,J. & M.

R. 'Royston Summertime'

Rhododendron Hybrid

? x ?

Hybridized By: Greig, E,J. & M.

R. 'Roza'

Azalea Hybrid

? x ?

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R. 'Roza Bonheur'

Evergreen Azalea Hybrid

? x ?

Hybridized By: Van der Cruyssen, E.

R. 'Roza Stevenson'

Rhododendron Hybrid

? x ?

Hybridized By: Stevenson, J.B.

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R. 'Rozamarie Group'

Rhododendron Cultivar group

? x ?

Hybridized By: Stevenson, J.B.

R. 'Rozanne Waterer'

Deciduous Azalea Hybrid

? x ?

R. 'Rozie Group'

Rhododendron Cultivar group

? x ?

Hybridized By: Stevenson, J.B.

R. 'Ruach'

Rhododendron Hybrid

? x ?

Hybridized By: Ogdon, B.J.

R. rubellum

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. 'Rubens'

Rhododendron Hybrid

? x ?

Hybridized By: Byls, J.

R. 'Rubens'

Rhododendron Hybrid

? x ?

Hybridized By: Waterer (Bagshot)

R. 'Rubens'

Deciduous Azalea Hybrid

? x ?

Hybridized By: Vuylsteke, C.

R. 'Rubens'

Deciduous Azalea Hybrid

? x ?

Hybridized By: Verschaffelt, L

R. 'Rubicon'

Rhododendron Hybrid

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

Hybridized By: Gordon, R.C

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R. rubiginosum

Species

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Heliolepida

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R. rubiginosum Desquamatum Group

Species

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Heliolepida

R. rubiginosum 'Finch'

Rhododendron Species Selection

Selected By: Henny, Rudolph

R. rubiginosum 'Rosey Ball'

Rhododendron Species Selection

R. rubiginosum var leclerei

Species

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Heliolepida

R. rubiginosum var ptilostylum

Species

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Heliolepida

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

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

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R. 'Rubinetta'

Evergreen Azalea Hybrid

R. 'Mother's Day' x R. 'Kermesinum'

Hybridized By: Hachmann, Hans

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R. 'Rubinetta x Vuyk's Scarlet'

Evergreen Azalea Hybrid

R. 'Rubinetta' x R. 'Vuyk's Scarlet'

R. 'Rubinfeuer'

Rhododendron Hybrid

? x ?

Hybridized By: Backhus, A.W.

R. 'Rubinstern'

Evergreen Azalea Hybrid

R. 'Mother's Day' x R. 'Kermesinum'

Hybridized By: Hachmann, Hans

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R. 'Rubinstern X Red Pimpernel x Kermesinum'

Evergreen Azalea Hybrid

R. 'Rubinstern' x R. 'Red Pimpernel x Kermesinum'

R. 'Rubinstern x Rubinetta'

Evergreen Azalea Hybrid

R. 'Rubinstern' x R. 'Rubinetta'

R. 'Rubis de Meirelbeke'

Evergreen Azalea Hybrid

? x ?

R. rubrobracteum

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. rubropilosum

Species

Subgenus: Tsutsusi
Section: Tsutsusi

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R. 'Rubrum Aurantiacum'

Evergreen Azalea Hybrid

? x ?

Hybridized By: van Geert, A.

R. 'Rubrum Elegans'

Evergreen Azalea Hybrid

? x ?

Hybridized By: Van Houtte, L. B. (Louis Benoit)

R. 'Ruby'

Vireya Hybrid

R. 'Jasminiflorum Carminatum' x R. multicolor var curtisii

R. 'Ruby Anne'

Vireya Hybrid

R. anagalliflorum x R. rubineiflorum

R. 'Ruby Bells'

Vireya Hybrid

(R. konori x laetum) x R. commonae

R. 'Ruby Bowman'

Rhododendron Hybrid

R. fortunei ssp fortunei x R. 'Lady Bligh'

Hybridized By: Bowman, R.F.

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R. 'Ruby Hart'

Rhododendron Hybrid

R. 'Carmen Group x Elizabeth Group' x R. elliottii

Hybridized By: Whitney, William E.

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R. 'Ruby Ice'

Rhododendron Hybrid

R. 'Dopey' x R. 'Doctor Tom Ring'

Hybridized By: Delp Weldon E.

R. 'Rubīns'

Deciduous Azalea Hybrid

R. kosterianum x R. canescens

Hybridized By: Kondratovičs, Rihard

R. 'Ruddy Red Max'

Rhododendron Hybrid

? x ?

R. 'Rudolf Abel'

Rhododendron Hybrid

? x ?

Hybridized By: Firma Seidel

R. 'Rudolph'

Rhododendron Hybrid

? x ?

Hybridized By: Liebig, L.L.

R. 'Rudolph's Orange'

Rhododendron Hybrid

R. 'Fabia Group' x R. 'Temple Belle Group'

Hybridized By: Henny, Rudolph

R. 'Rudy's Fairytail'

Rhododendron Hybrid

? x ?