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R. 'Dona Maria'Rhododendron HybridR. ponticum X R. maximumHybridized By: de Clerck d'Olsene, 1855 |
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R. 'Ponticum Roseum'Rhododendron HybridR. ponticum X R. maximumHybridized By: Pride, O.S.. Butler, Pennsylvania, USA, 1958 More information and pictures |
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R. 'ponticum x maximum'Azaleodendron HybridR. ponticum X R. maximumHybridized By: No hybridiser registered |
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R. 'Madame Masson'Rhododendron HybridR. catawbiense X R. ponticumHybridized By: Bertin. Versailles, France, 1849 More information and pictures |
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R. 'Laura Marie'Rhododendron HybridR. 'Countess of Athlone' X R. ponticumHybridized By: Lancaster, Ben, F.. Lackamas Gardens, Camas, Washington, USA, 1963 |
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R. 'Chionoides'Rhododendron Hybrid? X R. ponticumHybridized By: Standish, J.. Bagshot, Surrey, England, 1867 More information and pictures |
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R. 'Springbok'Rhododendron HybridR. griersonianum X R. ponticumHybridized By: George A.F.. Hydon Nursery, Godalming, Surrey, England, 1963 |
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R. 'Alice Mangles'Rhododendron HybridR. griffithianum X R. ponticumHybridized By: Mangles James Henry. Valewood, England, 1882 |
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R. 'Fastuosum Flore Pleno'Rhododendron HybridR. catawbiense X R. ponticumHybridized By: Francoisi Brothers, 1846 More information and pictures |
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R. 'Emily Baker'Rhododendron HybridR. 'Aunt Martha' X R. ponticumHybridized By: Baker, H.S.. Longview, Washington, USA, 1989 |
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R. 'Gabriele Liebig'Rhododendron HybridR. arboreum ssp arboreum X R. ponticumHybridized By: Liebig, L.L.. Dresden, Germany, 1863 |
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R. 'Bud Flanagan'Rhododendron Hybrid? X R. ponticumHybridized By: Rothschild, Edmund Leopold de. Southampton, UK, 1962 More information and pictures |
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R. 'Mingo'Rhododendron HybridR. 'Loderi Group' X R. ponticumHybridized By: Unknown |
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R. 'Albertii'Rhododendron HybridR. falconeri ssp falconeri X R. ponticumHybridized By: No hybridiser registered, 1843 |
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R. 'Cunningham's White'Rhododendron HybridR. caucasicum X R. ponticumHybridized By: Cunningham, 1830 More information and pictures |
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R. 'Ivery's Scarlet'Rhododendron HybridR. arboreum ssp arboreum X R. ponticumHybridized By: Ivery, J. More information and pictures |
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R. 'Grierpoint'Rhododendron HybridR. griersonianum X R. ponticumHybridized By: No hybridiser registered, 1995 More information and pictures |
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R. 'catawbiense x ponticum'Azaleodendron HybridR. catawbiense X R. ponticumHybridized By: Unknown |
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R. 'Tressa McMurry'Azaleodendron HybridR. occidentale X R. ponticumHybridized By: McMurry, 1966 More information and pictures |
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R. 'aureum x maximum'Rhododendron HybridR. aureum var aureum X R. maximumHybridized By: No hybridiser registered |
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R. 'Whizette'Rhododendron HybridR. 'Princess Elizabeth' X R. maximumHybridized By: Delp Weldon E.. Harrisville, Pensylvania, USA, 1992 |
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R. 'Ignescens'Rhododendron HybridR. arboreum ssp arboreum X R. maximumHybridized By: Rogers, W.H. & Son, 1932 |
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R. 'Hypermax'Rhododendron HybridR. hyperythrum X R. maximumHybridized By: Delp Weldon E.. Harrisville, Pensylvania, USA, 1999 More information and pictures |
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R. 'Russell Harmon'Rhododendron HybridR. catawbiense X R. maximumHybridized By: Harmon, R., 1950 More information and pictures |
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R. 'Ghost'Rhododendron HybridR. 'maximum x yakushimanum' X R. maximumHybridized By: Delp Weldon E.. Harrisville, Pensylvania, USA, 1974 |
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R. 'Mrs Sam'Rhododendron HybridR. catawbiense X R. maximumHybridized By: Unknown More information and pictures |
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R. 'Edith Pride'Rhododendron HybridR. 'English Roseum' X R. maximumHybridized By: Pride, O.S.. Butler, Pennsylvania, USA, 1958 More information and pictures |
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R. 'Golly Gee'Rhododendron HybridR. 'Donna Hardgrove' X R. maximumHybridized By: Ring, T.L.. Bellaire, Ohio, USA, 1977 |
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R. 'Jean Leppo'Rhododendron HybridR. catawbiense X R. maximumHybridized By: Smith, W.D.. Spring Grove, Pennsylvania, USA, 1969 |
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R. 'Seven Up'Rhododendron HybridR. aureum var aureum X R. maximumHybridized By: Delp Weldon E.. Harrisville, Pensylvania, USA, 1995 |
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R. 'yakushimanum x maximum'Rhododendron HybridR. degronianum ssp yakushimanum X R. maximumHybridized By: No hybridiser registered |
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R. 'Powerhouse'Rhododendron HybridR. 'America x Doctor V.H. Rutgers' X R. maximumHybridized By: Delp Weldon E.. Harrisville, Pensylvania, USA, 1974 More information and pictures |
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R. 'Delp's Snowball'Rhododendron HybridR. aureum var aureum X R. maximumHybridized By: Delp Weldon E.. Harrisville, Pensylvania, USA, 1995 |
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R. 'Halopeanum'Azalea HybridR. griffithianum X R. maximumHybridized By: Halopé, F, 1896 More information and pictures |
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R. 'Hybridum Group'Azaleodendron HybridR. viscosum X R. maximumHybridized By: Herbert, Honourable & Reverend W. | Wetherby, Yorkshire | England, 1817 |
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R. 'Amiblue'Rhododendron HybridR. ponticum X R. 'Whidbey Island'Hybridized By: Stipe, W.A.. Glynneden Garden, Greenbank, Washington, USA, 1993 More information and pictures |
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R. 'Album Multimaculatum'Rhododendron HybridR. ponticum X ?Hybridized By: Jacob-Makoy, L.. Liege/Luik, Belgium, 1851 |
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R. 'Pontiyak'Rhododendron HybridR. ponticum X R. degronianum ssp yakushimanumHybridized By: Kellygreen Rhododendron Nursery, 1994 More information and pictures |
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R. 'Madame Cochet'Rhododendron HybridR. ponticum X ?Hybridized By: Bertin. Versailles, France, 1888 More information and pictures |
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R. 'Pallidum'Rhododendron HybridR. ponticum X ?Hybridized By: Whitley & Osborn, 1850 |
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R. 'Arthur Bedford'Rhododendron HybridR. ponticum X ?Hybridized By: Lowinsky T.H.. Tittenhurst, Sunninghill, Bershire, UK, 1936 More information and pictures |
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R. 'Cetewayo'Rhododendron HybridR. ponticum X ?Hybridized By: Waterer, H. (Knaphill). Woking, Surrey (Knaphill), UK, 1883 More information and pictures |
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R. 'Attraction'Rhododendron HybridR. ponticum X ?Hybridized By: Koster & Sons More information and pictures |
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R. 'Old Port'Rhododendron HybridR. ponticum X ?Hybridized By: Waterer, H. (Knaphill). Woking, Surrey (Knaphill), UK, 1865 More information and pictures |
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R. 'Ightham Purple'Rhododendron HybridR. ponticum X ?Hybridized By: Reuthe, G. Ltd. Ightham, Kent, England, 1988 More information and pictures |
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R. 'Aunt Martha'Rhododendron HybridR. ponticum X ?Hybridized By: Clark, R.W.. Olympia, Washington, USA, 1958 More information and pictures |
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R. 'Frank Galsworthy'Rhododendron HybridR. ponticum X ?Hybridized By: Waterer, H. (Knaphill). Woking, Surrey (Knaphill), UK, 1900 More information and pictures |
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R. 'Anah Kruschke'Rhododendron HybridR. ponticum X R. catawbienseHybridized By: Kruschke, F. Nursery. Clackamas, Oregon, USA, 1948 More information and pictures |
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R. 'Maculatum Cachet'Rhododendron HybridR. ponticum X ?Hybridized By: Leroy, L., 1868 |
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R. 'Graziella'Rhododendron HybridR. ponticum X R. roxieanum var roxieanumHybridized By: Eschrich, G., 1992 More information and pictures |
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R. 'Joseph Whitworth'Rhododendron HybridR. ponticum X ?Hybridized By: Waterer (Bagshot). Surrey, England, 1865 More information and pictures |