Index

R. 'Reshma'

Rhododendron Hybrid

? X ?

Hybridized By: Hübbers, K-H.. Kranenburg, Germany, 1987

R. 'Resonanz'

Rhododendron Hybrid

? X ?

Hybridized By: Hachmann, Hans. Barmstedt in Holstein, Germany

R. reticulatum

Species

Subgenus: Tsutsusi
Section: Brachycalyx

R. reticulatum var albiflorum

Species

R. reticulatum var bifolium

Species

R. retivenium

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. 'Retreat Group'

Rhododendron Cultivar group

? X ?

Hybridized By: Rothschild, L. de. Founder of Exbury Gardens, UK

R. 'Retrich'

Azalea Hybrid

R. reticulatum X R. weyrichii

Hybridized By: Ingram, C. | Benenden, Kent | England

R. retrorsipilum

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. retusum var retusum

Species

Subgenus: Rhododendron
Section: Discovireya

R. retusum var trichostylum

Species

Subgenus: Rhododendron
Section: Discovireya

R. 'Revell's Red'

Rhododendron Hybrid

? X ?

Hybridized By: Waterer, H. (Knaphill). Woking, Surrey (Knaphill), UK

R. 'Reverend Paul'

Rhododendron Hybrid

R. 'Point Defiance' X R. 'Countess of Derby'

Hybridized By: Vinson, B.. Sumner, WA, USA, 1975

R. 'Reverie Group'

Rhododendron Cultivar group

? X ?

Hybridized By: Rothschild, L. de. Founder of Exbury Gardens, UK

R. 'Reversi'

Rhododendron Hybrid

? X ?

Hybridized By: Lady Loder, 1935

R. 'Revery'

Azalea Hybrid

? X ?

Hybridized By: Morrison, B.Y. | Pass Christian, Mississippi | USA

R. revolutum

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. 'Reward'

Azalea Hybrid

? X ?

Hybridized By: Morrison, B.Y. | Pass Christian, Mississippi | USA

R. 'Rex'

Azalea Hybrid

? X ?

Hybridized By: Germany, 1984

R. 'Rex'

Azalea Hybrid

R. 'Hinomayo' X R. 'Kirin'

Hybridized By: Van Hecke, A., 1945

R. rex ssp fictolacteum

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Falconera

R. rex ssp fictolacteum 'Cherry Tip'

Rhododendron Species Selection

Selected By: unknown, 1953

Subgenus: Hymenanthes
Section: Pontica
Subsection: Falconera

R. rex ssp fictolacteum 'Harold Jordan'

Rhododendron Species Selection

Selected By: Jordan, H, 1999

Subgenus: Hymenanthes
Section: Pontica
Subsection: Falconera

R. rex ssp fictolacteum var miniforme

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Falconera

R. rex ssp gratum

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Falconera

R. rex ssp rex

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Falconera

R. rex ssp rex 'Nicholas Vaartnou'

Rhododendron Species Selection

Selected By: Vaartnou, H., 1985

Subgenus: Hymenanthes
Section: Pontica
Subsection: Falconera

R. rex ssp rex 'Quartz'

Rhododendron Species Selection

Selected By: Crown Estate Commissioners , Windsor, Berkshire , England, 1955

Subgenus: Hymenanthes
Section: Pontica
Subsection: Falconera

R. rex ssp rex 'Roseum'

Rhododendron Species Selection

Selected By: Unknown

Subgenus: Hymenanthes
Section: Pontica
Subsection: Falconera

R. rex ssp rex 'Ward's Rex'

Rhododendron Species Selection

Selected By: Unknown

Subgenus: Hymenanthes
Section: Pontica
Subsection: Falconera

R. 'rex x Desert Gold'

Rhododendron Hybrid

R. rex ssp rex X R. 'Desert Gold'

Hybridized By: Unknown

R. 'rex x Desert Gold X Goldprinz'

Rhododendron Hybrid

R. 'rex x Desert Gold' X R. 'Goldprinz'

Hybridized By: Rasmussen, Mogens. Gedser, Denmark, 2008

R. 'rex x smirnowii'

Rhododendron Hybrid

R. rex ssp rex X R. smirnowii

Hybridized By: No hybridiser registered

R. 'Rexima'

Rhododendron Hybrid

? X ?

Hybridized By: Robeneck, H.. Westerstede, Germany

R. reynosoi

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. 'Rhein's Legacy'

Rhododendron Hybrid

? X ?

Hybridized By: Rhein, W.L.. Mechanicsburg, Pennsylvania, USA

R. 'Rhein's Luna'

Rhododendron Hybrid

R. minus Carolinianum Group X R. 'Russautinii Group'

Hybridized By: Rhein, W.L.. Mechanicsburg, Pennsylvania, USA, 1978

R. 'Rhein's Picotee'

Rhododendron Hybrid

R. 'Sappho' X R. 'Janet Blair'

Hybridized By: Rhein, W.L.. Mechanicsburg, Pennsylvania, USA, 1973

R. 'Rheingold'

Rhododendron Hybrid

? X ?

Hybridized By: Guyens, H.J.A.

R. rhodanthum

Species

Subgenus: Tsutsusi
Section: Tsutsusi

R. 'Rhode Island Yellow'

Rhododendron Hybrid

? X ?

Hybridized By: Unknown

R. 'Rhodelin'

Azalea Hybrid

? X ?

Hybridized By: Unknown

R. 'Rhodelite'

Rhododendron Hybrid

? X ?

Hybridized By: Delp Weldon E.. Harrisville, Pensylvania, USA

R. 'Rhodochrosite'

Rhododendron Hybrid

? X ?

Hybridized By: Stockman, M.. Port Angeles, Washington, USA

R. rhodochroum

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. rhodoleucum

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. rhodopus

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. rhodora f albiflora

Species

R. rhodosalpinx

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. rhodostomum

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. 'Rhodsoc'

Rhododendron Hybrid

? X ?

Hybridized By: Delp Weldon E.. Harrisville, Pensylvania, USA