Index

R. 'R. calostrotum ssp keleticum X R. dauricum'

Rhododendron Hybrid

R. calostrotum ssp keleticum X R. dauricum

Hybridized By: Unknown

R. 'R.F.D.'

Rhododendron Hybrid

? X ?

Hybridized By: Stokes, W.E., 1969

R. 'R.O. Delp'

Rhododendron Hybrid

? X ?

Hybridized By: Unknown

R. 'Ra'

Vireya Hybrid

R. 'laetum x zoelleri' X R. 'Os's Oriana'

Hybridized By: Blumhardt, O. S.. Koromiko Nurseries, Whangarei, New Zealand, 1998

R. 'Rabatz'

Rhododendron Hybrid

R. 'Double Date' X R. 'Erato'

Hybridized By: Hachmann, Hans. Barmstedt in Holstein, Germany, 1984

R. 'Raby'

Azalea Hybrid

? X ?

Hybridized By: Pratt, M.C., 1986

R. 'Racearound'

Rhododendron Hybrid

R. racemosum X ?

Hybridized By: Cross J.E., 1985

R. racemosum

Species

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Scabrifolia

R. racemosum 'Cox Apricot Racemosum'

Rhododendron Species Selection

Selected By: Unknown

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Scabrifolia

R. racemosum 'Forrest's Dwarf'

Rhododendron Species Selection

Selected By: Unknown

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Scabrifolia

R. racemosum 'Glendoick'

Rhododendron Species Selection

Selected By: Unknown

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Scabrifolia

R. racemosum 'Puyallup'

Rhododendron Species Selection

Selected By: unknown, 1968

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Scabrifolia

R. racemosum 'Pyallup'

Rhododendron Species Selection

Selected By: unknown, 1968

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Scabrifolia

R. racemosum 'Rock Rose'

Rhododendron Species Selection

Selected By: Stevenson, J.B. , Ascot, Berkshire , England

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Scabrifolia

R. racemosum 'White Lace'

Rhododendron Species Selection

Selected By: unknown, 1974

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Scabrifolia

R. 'racemosum x keiskei'

Rhododendron Hybrid

R. racemosum X R. keiskei

Hybridized By: No hybridiser registered

R. 'Rachel'

Rhododendron Hybrid

? X ?

Hybridized By: Noble, C.. Standish & Noble, Bagshot, Surrey, England, 1860

R. 'Rachel'

Azalea Hybrid

? X ?

Hybridized By: van Geert, C., 1877

R. 'Rachel'

Azalea Hybrid

? X ?

Hybridized By: Vervaene, D. | Ghent | Belgium, 1869

R. 'Rachel Banda'

Azalea Hybrid

? X ?

Hybridized By: Mossholder, R, 1989

R. 'Rachel Biggs'

Azaleodendron Hybrid

R. minus Carolinianum Group X R. kaempferi

Hybridized By: Nearing, G.G. | Ramsey, NJ | USA, 1935

R. 'Rachel Cunningham'

Azalea Hybrid

? X R. 'Pluto'

Hybridized By: Morrison, B.Y. | Pass Christian, Mississippi | USA, 1964

R. 'Rachel Dacre'

Azalea Hybrid

? X ?

Hybridized By: Rothschild, Edmund Leopold de | Southampton | UK, 1982

R. 'Rachel von Varenhagen'

Azalea Hybrid

? X ?

Hybridized By: Schulz, O. (head-gardener, Royal Porcelain Factory) | Berlin | Germany, 1865

R. 'Racil Group'

Rhododendron Cultivar group

R. racemosum X R. ciliatum

Hybridized By: The Netherlands, hybridizer not registered, 1937

R. 'Racilina'

Rhododendron Hybrid

R. racemosum X ?

Hybridized By: USA, 1985

R. 'Racine'

Azalea Hybrid

? X ?

Hybridized By: Vuylsteke, C., 1900

R. 'Racoon'

Azalea Hybrid

R. 'Squirrel' X R. 'Chippewa'

Hybridized By: Cox, Peter A. | Glendoick | Scotland, 1979

R. 'Racy'

Rhododendron Hybrid

R. 'Pink Cameo' X R. 'Pink Cameo'

Hybridized By: Delp Weldon E.. Harrisville, Pensylvania, USA, 1974

R. 'Rad'

Rhododendron Hybrid

R. 'Lem's Tangerine' X R. 'Fabia Group x (Dido Gorup x Lem's Goal) X Crest'

Hybridized By: Newcomb,L.L.. Snohomish, Washington, USA, 1982

R. radendum

Species

Subgenus: Rhododendron
Section: Pogonanthum

R. 'Radhan Baby'

Rhododendron Hybrid

? X ?

Hybridized By: Reich, W.

R. 'Radiance'

Azalea Hybrid

R. 'Ivory' X R. 'Shinnyo-no-tsuki'

Hybridized By: Morrison, B.Y. | Pass Christian, Mississippi | USA, 1948

R. 'Radiance Group'

Rhododendron Cultivar group

R. griersonianum X R. 'Vanessa Group'

Hybridized By: Aberconway, Lord. Bodnant, Tal-y-Cafn, Wales, 1928

R. 'Radiancy'

Azalea Hybrid

? X ?

Hybridized By: No hybridiser registered, 1958

R. radians var minahasae

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. radians var pubitubum

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. radians var radians

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. 'Radiant'

Rhododendron Hybrid

? X ?

Hybridized By: Hall, S., 1983

R. 'Radiant'

Azalea Hybrid

R. molle ssp molle X R. molle ssp japonicum

Hybridized By: Kromhout & Co, 1958

R. 'Radiant Beauty'

Rhododendron Hybrid

R. 'Coronation Day' X R. 'Ruby Bowman'

Hybridized By: O'Rourke, H.. Burnie, Tasmania, Australia, 1990

R. 'Radiant Frills'

Rhododendron Hybrid

R. 'Marquis of Waterford' X R. 'One Thousand Butterflies'

Hybridized By: Gustafson, R.H.. West Windsor, New Jersey, USA, 2004

R. 'Radiant Heat'

Rhododendron Hybrid

R. 'Oh My!' X R. 'Little Gem'

Hybridized By: Delp Weldon E.. Harrisville, Pensylvania, USA, 1992

R. 'Radiant Knight'

Azalea Hybrid

R. 'Hotspur Group' X R. 'Brazil'

Hybridized By: Waterer (Bagshot) | Surrey | England, 1958

R. 'Radiant Morn'

Rhododendron Hybrid

R. 'Fabia Group' X R. 'Sunrise Group'

Hybridized By: Aberconway, Lord. Bodnant, Tal-y-Cafn, Wales, 1938

R. 'Radiant Morn Group'

Rhododendron Hybrid

R. 'Fabia Group' X R. 'Sunrise Group'

Hybridized By: Aberconway, Lord. Bodnant, Tal-y-Cafn, Wales, 1938

R. 'Radiant Red'

Azalea Hybrid

R. 'ON-3' X R. 'Red King'

Hybridized By: Aromi, E.J | Mobile, Alabama | USA, 1992

R. 'Radiant Star'

Rhododendron Hybrid

R. 'C.P. Raffill Group' X R. fortunei ssp fortunei

Hybridized By: Hardgrove, D.L., 1958

R. 'Radiatum'

Azalea Hybrid

? X ?

Hybridized By: No hybridiser registered, 1851

R. 'Radicans'

Azalea Hybrid

? X ?

Hybridized By: van Geert, J., 1835

R. 'Radistrotum'

Rhododendron Hybrid

R. calostrotum ssp keleticum Radicans Group X R. calostrotum ssp calostrotum

Hybridized By: Arends, G.. Wuppertal, Germany, 1940