Index

R. 'Souvenir de Paul Kort'

Rhododendron Hybrid

? X ?

Hybridized By: Belder de, R., 1968

R. 'Souvenir de T.J. Seidel'

Azalea Hybrid

? X ?

Hybridized By: Van Houtte, L. B. (Louis Benoit) | Gentbrugge | Belgium, 1909

R. 'Souvenir du Duc d'Albany'

Azalea Hybrid

? X ?

Hybridized By: Van Houtte, L. B. (Louis Benoit) | Gentbrugge | Belgium, 1882

R. 'Souvenir du Président Carnot'

Azalea Hybrid

? X ?

Hybridized By: Moser & Son, 1909

R. 'Souvenir Kathleen van der Linden'

Azalea Hybrid

? X ?

Hybridized By: Unknown

R. 'Souvenir of Anthony Waterer'

Rhododendron Hybrid

? X ?

Hybridized By: No hybridiser registered, 1958

R. 'Souvenir of Anthony Waterer x Direktor E. Hjelm'

Rhododendron Hybrid

R. 'Souvenir of Anthony Waterer' X R. 'Direktor E Hjelm'

Hybridized By: No hybridiser registered

R. 'Souvenir of W C Slocock'

Rhododendron Hybrid

R. campylocarpum ssp campylocarpum X ?

Hybridized By: Slocock, Walter C.. Goldsworth Nursery, Woking, UK, 1928

R. 'Spanish Dancer'

Vireya Hybrid

X R. aurigeranum ssp aurigeranum

Hybridized By: Unknown

R. 'Spanish Galleon'

Rhododendron Hybrid

R. 'Belle' X R. 'Margaret Dunn Group'

Hybridized By: Sunningdale Nursery, 1955

R. 'Spanish Glory'

Rhododendron Hybrid

? X ?

Hybridized By: Sumner, M.H. & Mrs. F. San Francisco, California, USA

R. 'Spanish Gold'

Azalea Hybrid

? X ?

Hybridized By: Slocock, Walter C. | Goldsworth Nursery, Woking | UK, 1958

R. 'Spanish Lady'

Rhododendron Hybrid

R. 'Evening Glow' X R. 'Lamplighter'

Hybridized By: Stockman, M.. Port Angeles, Washington, USA, 1972

R. 'Spanish Main'

Azalea Hybrid

? X ?

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

R. spanotrichum

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Irrorata

R. 'Sparkle'

Azalea Hybrid

? X ?

Hybridized By: Unknown

R. 'Sparkler'

Azalea Hybrid

? X ?

Hybridized By: Weston Nurseries

R. 'Sparkling Burgundy'

Rhododendron Hybrid

X

Hybridized By: Unknown

R. 'Sparkling Stars'

Rhododendron Hybrid

R. 'Yaku Sunrise x Hansel' X R. 'Lem's Cameo'

Hybridized By: Fujioka, Frank. Whidbey Island, USA, 1983

R. sparsifolium

Species

Subgenus: Tsutsusi
Section: Tsutsusi

R. spathulatum

Species

Subgenus: Rhododendron
Section: Discovireya

R. 'speciosum x canescens'

Azalea Hybrid

R. flammeum X R. canescens

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

R. 'Speckled Honey'

Rhododendron Hybrid

R. 'Janet Blair' X R. 'Apritan x Seattle Gold'

Hybridized By: MacMullan, D. (Dennis). Hamburg, Pennsylvania, USA, 1978

R. 'Spectacular'

Rhododendron Hybrid

? X ?

Hybridized By: Cowles, J.C.. Stow, MA (superintendent of Dexter Estate 1959-1967), USA, 1959

R. 'Spellbinder'

Rhododendron Hybrid

R. 'Russell Harmon' X R. 'calophytum x sutchuense'

Hybridized By: Leach, Dr. David G.. North Madison, Ohio, USA, 1955

R. sperabile var sperabile

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Neriiflora

R. sperabile var weihsiense

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Neriiflora

R. sperabiloides

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Neriiflora

R. sphaeroblastum var sphaeroblastum

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Taliensia

R. sphaeroblastum var wumengense

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Taliensia

R. 'Spicil'

Rhododendron Hybrid

? X ?

Hybridized By: Unknown

R. 'Spicy Lights'

Azalea Hybrid

R. prinophyllum X ?

Hybridized By: Pellet, H. | University of Minnesota Landscape Arboretum | USA, 1963

R. 'Spider Dane'

Rhododendron Hybrid

R. degronianum ssp yakushimanum X R. longesquamatum

Hybridized By: Birck, Jens. Kastrup, Denmark, 1976

R. 'Spiegelei'

Rhododendron Hybrid

? X ?

Hybridized By: Wieting, J.. Baumschulen, Gisselhorst/Westerstede, Germany

R. 'Spiegelei'

Azalea Hybrid

? X ?

Hybridized By: Meltzer, H.L. | Neustadt a/d Waldnaab | Germany, 1985

R. 'Spiked Punch'

Rhododendron Hybrid

R. 'Holden' X R. 'Shaazam'

Hybridized By: Whitman, M.J.. Wall, NJ, USA, 1996

R. spilotum

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Glischra

R. 'Spinout'

Rhododendron Hybrid

? X ?

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

R. 'Spinoza'

Azalea Hybrid

? X ?

Hybridized By: Endtz, L.J. & Co | Boskoop | Netherlands

R. spinuliferum

Species

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Scabrifolia

R. spinuliferum 'Blackwater'

Rhododendron Species Selection

Selected By: Unknown

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Scabrifolia

R. spinuliferum 'Jack Hext'

Rhododendron Species Selection

Selected By: Holman, N.T., 1971

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Scabrifolia

R. 'Spinulosum'

Rhododendron Hybrid

R. spinuliferum X R. racemosum

Hybridized By: Kew. Royal Botanical Gardens, Surrey, England, 1926

R. 'Spinulosum Group'

Rhododendron Cultivar group

R. spinuliferum X R. racemosum

Hybridized By: Kew. Royal Botanical Gardens, Surrey, England, 1926

R. 'Spirited'

Rhododendron Hybrid

R. 'Tony's Gift' X R. 'Mrs T H Lowinsky'

Hybridized By: Delp Weldon E.. Harrisville, Pensylvania, USA, 1981

R. 'Spit Fire'

Azalea Hybrid

? X ?

Hybridized By: Unknown

R. 'Spitfire'

Rhododendron Hybrid

R. griffithianum X ?

Hybridized By: Kluis Antony. Boskoop, Netherlands, 1946

R. 'Spitfire x Frühlingszauber'

Rhododendron Hybrid

R. 'Spitfire' X R. 'Frühlingszauber'

Hybridized By: No hybridiser registered

R. 'Splashy Vision'

Rhododendron Hybrid

R. 'Keystone' X R. 'Cecil'

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

R. 'Splendens'

Azalea Hybrid

? X ?

Hybridized By: Smith, 1844

R. 'Splendens'

Azalea Hybrid

? X ?

Hybridized By: Loddiges, C. & Sons | Hackney, London | England, 1826