Index

R. 'Silver Dust'

Rhododendron Hybrid

R. 'Golfer' X R. 'Chemainus'

Hybridized By: Fujioka, Frank. Whidbey Island, USA, 2002

R. 'Silver Lady'

Rhododendron Hybrid

R. degronianum ssp yakushimanum X R. smirnowii

Hybridized By: Horstman, G., 1973

R. 'Silver Queen'

Azalea Hybrid

? X ?

Hybridized By: Unknown

R. 'Silver Sixpence'

Rhododendron Hybrid

R. 'Fabia Group X fortunei discolor x facetum X fortunei discolor x griersonianum' X R. 'wardii x yakushimanum'

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

R. 'Silver Skies'

Rhododendron Hybrid

R. degronianum ssp yakushimanum 'Koichiro Wada' X R. 'Medusa Group'

Hybridized By: Fujioka, Frank. Whidbey Island, USA, 1982

R. 'Silver Slipper'

Azalea Hybrid

? X ?

Hybridized By: Exbury | The Rothschild Estate, Hampshire | England, 1948

R. 'Silver Sovereign'

Rhododendron Hybrid

? X ?

Hybridized By: Unknown

R. 'Silver Star'

Vireya Hybrid

X ?

Hybridized By: Unknown

R. 'Silver Sword'

Azalea Hybrid

? X ?

Hybridized By: No hybridiser registered

R. 'Silver Thimbles'

Vireya Hybrid

X R. anagalliflorum

Hybridized By: Unknown

R. 'Silverwood'

Azalea Hybrid

R. 'Silver Slipper' X ?

Hybridized By: Millais, E.G., 1976

R. 'Silvester'

Azalea Hybrid

R. 'Aladdin' X R. 'Amoenum'

Hybridized By: Boskoop | Research Center fo Arboreus Crops | Netherlands, 1963

R. 'Silvetta'

Rhododendron Hybrid

? X ?

Hybridized By: Unknown

R. 'Silvia Marie'

Rhododendron Hybrid

R. 'Janet Blair' X R. 'Purple Lace'

Hybridized By: Doppel,J.. Lenharstville, PA, USA, 2001

R. silvicolum

Natural Hybrid

R. cuneifolium var cuneifolium X R. ericoides

Subgenus: Rhododendron
Section: Discovireya

R. 'Simbu Goldstrike'

Vireya Hybrid

X

Hybridized By: Unknown

R. 'Simbu Sunset'

Vireya Hybrid

R. laetum X R. zoelleri

Hybridized By: Lelliott, T.. Boronia, Victoria, Australia, 1984

R. simiarum

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Argyrophylla

R. simiarum ssp youngae

Species

R. 'Simmon's Classic'

Rhododendron Hybrid

? X ?

Hybridized By: Whitney, William E.. Brinnon, Washington, USA, 1973

R. 'Simona'

Rhododendron Hybrid

R. 'Harvest Moon' X R. 'Letty Edwards Group'

Hybridized By: Hachmann, Hans. Barmstedt in Holstein, Germany, 1964

R. 'Simplet'

Azalea Hybrid

R. 'Madame Adolphe d'Haene' X R. 'Avenir'

Hybridized By: Truffaut, A., 1958

R. 'Simplicity'

Rhododendron Hybrid

R. 'Solon' X R. 'Loderi Group'

Hybridized By: Aberconway, Lord. Bodnant, Tal-y-Cafn, Wales, 1950

R. 'Simplicity'

Azalea Hybrid

R. mucronatum var mucronatum 'Lilacinum' X R. 'Willy'

Hybridized By: Morrison, B.Y. | Pass Christian, Mississippi | USA, 1947

R. 'Simplon'

Azalea Hybrid

R. yedoense var yedoense X ?

Hybridized By: Frei, H. | Wildensbuch | Switzerland, 1970

R. simsii var albiflorum

Species

Subgenus: Tsutsusi
Section: Tsutsusi

R. simsii var mesembrinum

Species

Subgenus: Tsutsusi
Section: Tsutsusi

R. simsii var simsii

Species

Subgenus: Tsutsusi
Section: Tsutsusi

R. simsii var simsii 'Grandiflorum Roseum'

Azalea Species Selection

Selected By: van Geert, A., 1849

Subgenus: Tsutsusi
Section: Tsutsusi

R. simsii var simsii 'Gumpo Fancy'

Azalea Species Selection

Selected By: unknown

Subgenus: Tsutsusi
Section: Tsutsusi

R. simsii var simsii 'Gumpo Pink'

Azalea Species Selection

Selected By: No hybridiser registered, 1958

Subgenus: Tsutsusi
Section: Tsutsusi

R. simsii var simsii 'Gumpo Red'

Azalea Species Selection

Selected By: Wada, K. , Hakonea Nursery, Numazu , Japan, 1937

Subgenus: Tsutsusi
Section: Tsutsusi

R. simsii var simsii 'Vittatum'

Azalea Species Selection

Selected By: China, 1850

Subgenus: Tsutsusi
Section: Tsutsusi

R. simsii var simsii 'Zi Yan'

Azalea Species Selection

Selected By: Zhang, Chang Qin , Kunming , China, 1985

Subgenus: Tsutsusi
Section: Tsutsusi

R. 'Simson'

Rhododendron Hybrid

? X R. 'New Comet'

Hybridized By: Hachmann, Hans. Barmstedt in Holstein, Germany, 1989

R. simulans

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. 'Sincerity'

Rhododendron Hybrid

? X ?

Hybridized By: Unknown

R. 'Sinfonia'

Rhododendron Hybrid

R. 'Lem's Tangerine' X R. 'Anita Dunstan'

Hybridized By: Newcomb,L.L.. Snohomish, Washington, USA, 1985

R. 'Singapore'

Rhododendron Hybrid

R. 'Fanfare' X R. 'Gertrud Schäle'

Hybridized By: Leach, Dr. David G.. North Madison, Ohio, USA, 1956

R. 'Singing Sun'

Rhododendron Hybrid

R. 'Sun Blush' X R. 'Goldprinz'

Hybridized By: Barlup, Jim. Bellevue, USA, 2002

R. sinofalconeri

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Falconera

R. sinogrande

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Grandia

R. sinonuttallii

Species

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Maddenia

R. sinosimulans

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Taliensia

R. 'Siouxon x sanguineum ssp sanguineum var haemaleum'

Rhododendron Hybrid

R. degronianum ssp yakushimanum 'Siouxon' X R. sanguineum ssp sanguineum var haemaleum

Hybridized By: Unknown

R. Sir Charles Lemon

Natural Hybrid

R. arboreum ssp cinnamomeum X R. campanulatum ssp campanulatum

Subgenus: Hymenanthes
Section: Pontica
Subsection: Arborea

R. 'Sir Frederick Moore'

Rhododendron Hybrid

? X ?

Hybridized By: Unknown

R. 'Sir George Holford'

Vireya Hybrid

R. javanicum ssp javanicum X ?

Hybridized By: Unknown

R. 'Sir George Holford x leucogigas'

Vireya Hybrid

R. 'Sir George Holford' X R. leucogigas

Hybridized By: No hybridiser registered

R. 'Sir Humphrey de Trafford'

Rhododendron Hybrid

? X ?

Hybridized By: Waterer (Bagshot). Surrey, England

R. 'Sir Isaac Brock'

Rhododendron Hybrid

? X ?

Hybridized By: Behring, R.. St. Catharines, Ontario, Canada