Index

R. 'Colleen Becker'

Azalea Hybrid

? X ?

Hybridized By: Smith, W.D. | Spring Grove, Pennsylvania | USA

R. 'College Pink'

Rhododendron Hybrid

R. arboreum ssp nilagiricum 'Noyo Chief' X ?

Hybridized By: New Zealand Rhododendron Association

R. colletianum

Species

Subgenus: Rhododendron
Section: Pogonanthum

R. 'Colonel Coen'

Rhododendron Hybrid

? X ?

Hybridized By: Ostbo, E.. Bellevue, Washington, USA, 1958

R. 'Colonel Rogers Group'

Rhododendron Hybrid

R. falconeri ssp falconeri X R. niveum

Hybridized By: Rogers. Sevenoaks, Kent, UK, 1926

R. 'Color Buster'

Rhododendron Hybrid

R. 'Skeeter Hill' X R. 'Robert Weldon'

Hybridized By: Delp Weldon E.. Harrisville, Pensylvania, USA, 1984

R. 'Color Coded'

Rhododendron Hybrid

? X ?

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

R. 'Color Crusher'

Rhododendron Hybrid

? X ?

Hybridized By: Ring, T.L.. Bellaire, Ohio, USA

R. 'Color Me Pink'

Rhododendron Hybrid

R. 'Midsummer' X R. 'Delp's Red Max'

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

R. 'Color Purple'

Rhododendron Hybrid

R. 'Goody Goody' X R. 'Goody Goody'

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

R. 'Coloratura'

Azalea Hybrid

R. cumberlandense X R. arborescens

Hybridized By: Leach, Dr. David G. | North Madison, Ohio | USA, 1961

R. 'Colorburst'

Rhododendron Hybrid

? X ?

Hybridized By: Looye, Jack. Niagara on the Lake, Ontario, Canada

R. 'Colorific'

Rhododendron Hybrid

? X ?

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

R. 'Colossus'

Azalea Hybrid

? X ?

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

R. 'Colts Neck Rose'

Rhododendron Hybrid

R. minus var minus X R. dauricum

Hybridized By: Lewis, G.D. Montpelier, Vermont, USA, 1970

R. 'Columba'

Azalea Hybrid

? X ?

Hybridized By: Kondratovičs, Rihard | Riga | Latvia

R. 'Columbia'

Azalea Hybrid

? X ?

Hybridized By: Chisholm, J.J.

R. 'Columbia Glory'

Rhododendron Hybrid

? X ?

Hybridized By: Ragan, W.A, 1969

R. columbianum

Species

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Ledum

R. 'Colyer'

Azalea Hybrid

? X ?

Hybridized By: Brown, C.E., 1950

R. 'Comely Group'

Rhododendron Cultivar group

R. cinnabarinum ssp xanthocodon Concatenans Group X R. 'Lady Chamberlain Group'

Hybridized By: Aberconway, Lord. Bodnant, Tal-y-Cafn, Wales, 1939

R. 'Comet'

Azalea Hybrid

? X ?

Hybridized By: Unknown

R. 'Comet'

Azaleodendron Hybrid

? X ?

Hybridized By: Unknown

R. comisteum

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Taliensia

R. 'Command Performance'

Rhododendron Hybrid

R. 'Hachmann's Charmant' X R. 'Snow Candle'

Hybridized By: Barlup, Jim. Bellevue, USA, 1996

R. commonae

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. 'commonae x commonae'

Vireya Hybrid

R. commonae X R. commonae

Hybridized By: No hybridiser registered

R. 'Commonwealth'

Rhododendron Hybrid

R. 'Henry's Red' X ?

Hybridized By: Mezitt, R.W., 1975

R. 'Compacta'

Rhododendron Hybrid

R. 'Faggetter's Favourite' X R. williamsianum

Hybridized By: Hobbie, Dietrich G.. Westerstede/Linswege, Germany

R. 'Compactum Multiflorum'

Rhododendron Hybrid

? X ?

Hybridized By: Unknown

R. comparabile

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. complexum

Species

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Lapponica

R. comptum var comptum

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. comptum var trichodes

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. 'Comstock'

Rhododendron Hybrid

R. 'Jalisco Group' X R. 'Jasper Group'

Hybridized By: James Delbert W.. Eugene, Oregon, USA, 1955

R. 'Comte d'Egmont'

Azalea Hybrid

? X ?

Hybridized By: Verschaffelt, A. (Alexander) | Ghent | Belgium, 1846

R. 'Comte de Charles de Kerchove de Deterghem'

Azalea Hybrid

? X ?

Hybridized By: Unknown

R. 'Comte de Grasse'

Azalea Hybrid

? X ?

Hybridized By: Cole, D.J.

R. 'Comte de Kerchove'

Azalea Hybrid

? X ?

Hybridized By: Camellia Lodge Nursery, 1958

R. 'Comtesse de Hainaut'

Rhododendron Hybrid

? X ?

Hybridized By: Verschaffelt, A. (Alexander). Ghent, Belgium, 1864

R. 'Comtesse de Hainaut'

Azalea Hybrid

? X ?

Hybridized By: Verschaffelt, A. (Alexander) | Ghent | Belgium, 1861

R. 'Comtesse de Kerchove'

Azalea Hybrid

? X ?

Hybridized By: Haerens, J., 1938

R. 'Comtesse de Kerchove'

Azalea Hybrid

? X ?

Hybridized By: No hybridiser registered, 1896

R. 'Comtesse de Morello'

Rhododendron Hybrid

? X ?

Hybridized By: Standish, J.. Bagshot, Surrey, England, 1857

R. 'Concerto for Brass'

Vireya Hybrid

R. viriosum X R. laetum

Hybridized By: Unknown

R. 'Concessum'

Rhododendron Hybrid

? X ?

Hybridized By: Byls, J., 1844

R. 'Concinna'

Azalea Hybrid

? X ?

Hybridized By: Unknown

R. concinnoides

Species

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Monantha

R. concinnum

Species

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Triflora

R. 'Concinnum'

Azalea Hybrid

? X ?

Hybridized By: Unknown

R. concinnum Benthamianum Group

Species

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Triflora