Index

R. 'Cornelia Sanders'

Rhododendron Hybrid

R. hyperythrum X R. degronianum ssp yakushimanum

Hybridized By: Sanders, S & C. Bethesda, Maryland, USA

R. 'Cornelia Schröder'

Rhododendron Hybrid

R. 'Genoveva' X R. 'Hassan'

Hybridized By: Seidel, T.J.H.. Dresden, Germany, 1938

R. 'Cornish Cross Group'

Rhododendron Cultivar group

R. thomsonii ssp thomsonii X R. griffithianum

Hybridized By: Smith, S.. Gardener to R.B. Fox, Penjerrick, Cornwall, England, 1927

R. 'Cornish Loderi'

Rhododendron Hybrid

R. fortunei ssp discolor X R. griffithianum

Hybridized By: Williams, John Charles. Caerhays, Cornwall, England, 1958

R. 'Cornish Loderi Group'

Rhododendron Hybrid

? X ?

Hybridized By: Unknown

R. 'Cornsutch Group'

Rhododendron Cultivar group

? X ?

Hybridized By: Unknown

R. cornu-bovis

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. 'Cornubia'

Rhododendron Hybrid

R. arboreum ssp arboreum X R. 'Shilsonii'

Hybridized By: Fox, R.B.. Penjerrick, Cornwall, UK, 1912

R. 'Cornubia Group'

Rhododendron Cultivar group

R. arboreum ssp arboreum X R. 'Shilsonii Group'

Hybridized By: Gill, Richards & Sons. Penryn, Cornwall, England, 1911

R. 'Cornwallis'

Rhododendron Hybrid

R. fortunei ssp fortunei X ?

Hybridized By: Kentville Research Station, 1977

R. 'Coromandel'

Rhododendron Hybrid

R. 'Roberte' X R. 'Vanessa'

Hybridized By: Sunningdale Nursery, 1957

R. 'Corona'

Rhododendron Hybrid

? X ?

Hybridized By: Waterer (Bagshot). Surrey, England, 1911

R. 'Corona x griersonianum'

Rhododendron Hybrid

R. 'Corona' X R. griersonianum

Hybridized By: Unknown

R. 'Coronation Day'

Rhododendron Hybrid

R. 'Pink Shell' X R. 'Loderi Group'

Hybridized By: Crosfield, J. J.. Embley Park, Romsey, Hampshire, UK, 1937

R. 'Coronation Day x Gargantua'

Rhododendron Hybrid

X

Hybridized By: Unknown

R. 'Coronation Lady'

Azalea Hybrid

R. 'Cecile' X ?

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

R. 'Coronis Group'

Rhododendron Cultivar group

? X ?

Hybridized By: Unknown

R. 'Coronis Group x griersonianum'

Rhododendron Cultivar group

R. 'Coronis Group' X R. griersonianum

Hybridized By: No hybridiser registered

R. correoides

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. 'Corringe'

Azalea Hybrid

? X ?

Hybridized By: Rothschild, L. de | Founder of Exbury Gardens | UK, 1958

R. 'Corry'

Azalea Hybrid

R. mucronatum var mucronatum X R. 'Heiwa'

Hybridized By: Gartrell, R. D. | Highland Farms, Black Mountain, North Carolina | USA, 1962

R. 'Corry Koster'

Rhododendron Hybrid

? X ?

Hybridized By: Koster M. & Sons. Boskoop, Netherlands, 1909

R. 'Corry Koster x Mrs G.W. Leak'

Rhododendron Hybrid

R. 'Corry Koster' X R. 'Mrs G. W. Leak'

Hybridized By: No hybridiser registered

R. 'Corsage'

Azalea Hybrid

? X ?

Hybridized By: Gable, J.B. | Stewartstown, Pennsylvania | USA, 1958

R. 'Cortez'

Rhododendron Hybrid

R. 'Mars x Koichiro Wada' X R. basilicum

Hybridized By: Cisney, M.E., 1969

R. 'Cortonii'

Rhododendron Hybrid

? X ?

Hybridized By: Leroy, A.. Angers, France, 1868

R. 'Coruscans'

Azalea Hybrid

? X ?

Hybridized By: Jacob-Makoy, L. | Liege/Luik | Belgium, 1849

R. 'Coruscum'

Azalea Hybrid

? X ?

Hybridized By: van Geert, J., 1839

R. coryanum

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Argyrophylla

R. coryanum 'Chelsea Chimes'

Rhododendron Species Selection

Selected By: Unknown

Subgenus: Hymenanthes
Section: Pontica
Subsection: Argyrophylla

R. 'Corydon'

Azalea Hybrid

R. 'Yozakura' X R. 'Kagaribi'

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

R. 'Cos'

Rhododendron Hybrid

R. decorum ssp decorum X R. 'Vanessa Group'

Hybridized By: Sunningdale Nursery, 1955

R. 'Cosel'

Rhododendron Hybrid

R. catawbiense X ?

Hybridized By: Seidel, T.J.R.. Dresden/Grüngräbchen, Germany, 1918

R. 'Cosima'

Rhododendron Hybrid

R. 'Everestianum' X R. 'Everestianum'

Hybridized By: Seidel, T.J.R.. Dresden/Grüngräbchen, Germany, 1893

R. 'Cosmic Rays'

Rhododendron Hybrid

R. 'Purple Susy' X R. 'Ritchie'

Hybridized By: Delp Weldon E.. Harrisville, Pensylvania, USA, 1995

R. 'Cosmopolitan'

Rhododendron Hybrid

R. 'Cunningham's White' X R. 'Vesuvius'

Hybridized By: Hagen, J.C.. Boskoop, Netherlands, 1957

R. 'Cosmopolitan'

Rhododendron Hybrid

? X ?

Hybridized By: Waterer, A.. Woking, Surrey, UK, 1870

R. 'Cosmopolitan x Scintillation'

Rhododendron Hybrid

R. 'Cosmopolitan' X R. 'Scintillation'

Hybridized By: No hybridiser registered

R. 'Costa del Sol'

Rhododendron Hybrid

R. campylocarpum ssp caloxanthum X R. lacteum

Hybridized By: Rothschild, Edmund Leopold de. Southampton, UK, 1969

R. 'Cote Group'

Azalea Hybrid

R. atlanticum X ?

Hybridized By: Stevenson, J.B. | Ascot, Berkshire | England, 1937

R. 'Cotton Candy'

Rhododendron Hybrid

R. 'Loderi Venus' X R. 'Marinus Koster'

Hybridized By: Henny & Wennekamp. Salem, Oregon, USA, 1958

R. 'Cotton Candy x Van Nes Sensation'

Rhododendron Hybrid

R. 'Cotton Candy' X R. 'Van Nes Sensation'

Hybridized By: Unknown

R. 'Cotton Candy's Sister'

Rhododendron Hybrid

? X ?

Hybridized By: Henny & Wennekamp. Salem, Oregon, USA, 1961

R. 'Cotton Top'

Azalea Hybrid

? X ?

Hybridized By: Guttormsen, W.L. | Greenwood Gardens, Canby, Oregon | USA

R. 'Cottontail'

Azalea Hybrid

R. 'Linda Jean' X R. 'Satanta'

Hybridized By: Guttormsen, W.L. | Greenwood Gardens, Canby, Oregon | USA, 1975

R. 'Cougar'

Rhododendron Hybrid

? X ?

Hybridized By: Unknown

R. 'Couleur Nankin'

Azalea Hybrid

? X ?

Hybridized By: Jacob-Makoy, L. | Liege/Luik | Belgium, 1849

R. 'Counterpoint'

Rhododendron Hybrid

R. 'PJM Group' X R. 'Mucronulatum Pink'

Hybridized By: No hybridiser registered, 1985

R. 'Countess Morley'

Rhododendron Hybrid

? X ?

Hybridized By: Pince, R.T., 1868

R. 'Countess of Athlone'

Rhododendron Hybrid

X R. catawbiense 'Catawbiense Grandiflorum'

Hybridized By: van Nes C. B . & Sons. Boskoop, Netherlands, 1923

R. 'Countess of Clancarty'

Rhododendron Hybrid

? X ?

Hybridized By: Waterer (Bagshot). Surrey, England, 1865