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R. 'smirnowii x catawbiense'Rhododendron HybridR. smirnowii X R. catawbienseHybridized By: No hybridiser registered |
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R. 'Queen Victoria'Rhododendron HybridR. maximum X R. 'Altaclerense Group'Hybridized By: Standish & Noble. Bagshot, Surrey, England, 1850 |
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R. 'Alumni Day'Rhododendron HybridR. maximum X R. fortunei ssp discolorHybridized By: Nearing, G.G.. Ramsey, NJ, USA, 1958 |
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R. 'Cool Trend'Rhododendron HybridR. maximum X R. 'Buttermint'Hybridized By: Ring, T.L.. Bellaire, Ohio, USA, 1986 |
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R. 'Eileen'Rhododendron HybridR. maximum X ?Hybridized By: Waterer (Bagshot). Surrey, England, 1920 |
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R. 'Elizabeth Scholtz'Rhododendron HybridR. maximum X ?Hybridized By: Smith, W.D.. Spring Grove, Pennsylvania, USA, 1962 |
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R. 'Lady Annette de Trafford'Rhododendron HybridR. maximum X ?Hybridized By: Waterer, H. (Knaphill). Woking, Surrey (Knaphill), UK, 1874 More information and pictures |
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R. 'Lady Eleanor Cathcart'Rhododendron HybridR. maximum X R. arboreum ssp arboreumHybridized By: Waterer John, Sons & Crisp. Bagshot, Surrey, UK, 1850 More information and pictures |
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R. 'Mademoiselle Marie van Houtte'Rhododendron HybridR. maximum X ?Hybridized By: Van Houtte, L. B. (Louis Benoit). Gentbrugge, Belgium, 1879 More information and pictures |
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R. 'Alarm'Rhododendron HybridR. maximum X ?Hybridized By: Waterer, H. (Knaphill). Woking, Surrey (Knaphill), UK, 1860 More information and pictures |
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R. 'July Possibility'Rhododendron HybridR. maximum X R. 'Ponticum Roseum'Hybridized By: Scott Arboretum, 1953 |
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R. 'Independence Day'Rhododendron HybridR. maximum X ?Hybridized By: Waterer, H. (Knaphill). Woking, Surrey (Knaphill), UK, 1915 More information and pictures |
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R. 'Summer Snow'Rhododendron HybridR. maximum X R. 'ungernii x auriculatum'Hybridized By: Leach, Dr. David G.. North Madison, Ohio, USA, 1969 More information and pictures |
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R. 'Late Beginning'Rhododendron HybridR. maximum X R. 'C.S. Sargent'Hybridized By: Scott Arboretum, 1953 |
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R. 'Angel Glow'Rhododendron HybridR. maximum X R. degronianum ssp yakushimanum 'Koichiro Wada'Hybridized By: Unknown |
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R. 'Adele's Yellow'Rhododendron HybridR. maximum X R. wardii var wardiiHybridized By: Fetterhoff, W.M.. Gibsonia, Pennsylvania, USA, 1964 |
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R. 'maximum x haematodes'Rhododendron HybridR. maximum X R. haematodes ssp haematodesHybridized By: Unknown |
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R. 'Florence Rinehimer'Rhododendron HybridR. maximum X ?Hybridized By: Smith, W.D.. Spring Grove, Pennsylvania, USA, 1971 |
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R. 'maximum x yakushimanum'Rhododendron HybridR. maximum X R. degronianum ssp yakushimanumHybridized By: No hybridiser registered |
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R. 'Harold Amateis'Rhododendron HybridR. maximum X R. strigillosumHybridized By: Amateis, Edmond. Brewster, New York, USA, 1967 More information and pictures |
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R. 'Lady Clementine Mitford'Rhododendron HybridR. maximum X ?Hybridized By: Waterer, H. (Knaphill). Woking, Surrey (Knaphill), UK, 1870 More information and pictures |
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R. 'Late Arrival'Rhododendron HybridR. maximum X R. 'C.S. Sargent'Hybridized By: Scott Arboretum, 1953 |
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R. 'Jason's Maxim'Rhododendron HybridR. maximum X ?Hybridized By: Bowers, C.G., 1927 |
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R. 'Folcroft'Rhododendron HybridR. maximum X R. 'maximum x fortunei'Hybridized By: Scott Arboretum, 1958 |
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R. 'Doctor Denis Percell'Rhododendron HybridR. maximum X R. 'Leo Group'Hybridized By: Goodrich, J.M. (Jane) & Ray. Vienna, Virginia, USA, 1971 |
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R. 'Marchioness of Lansdowne'Rhododendron HybridR. maximum X ?Hybridized By: Waterer, H. (Knaphill). Woking, Surrey (Knaphill), UK, 1879 More information and pictures |
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R. 'June Magic'Rhododendron HybridR. maximum X R. fortunei ssp discolorHybridized By: Scott Arboretum, 1953 |
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R. 'Alandale'Rhododendron HybridR. maximum X R. fortunei ssp discolorHybridized By: Nearing, G.G.. Ramsey, NJ, USA, 1938 |
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R. 'Baccalaureate'Rhododendron HybridR. maximum X R. fortunei ssp discolorHybridized By: Gable, J.B.. Stewartstown, Pennsylvania, USA, 1972 |
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R. 'Othello'Rhododendron HybridR. maximum X ?Hybridized By: Standish & Noble. Bagshot, Surrey, England, 1847 |
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R. 'Susan Kay'Rhododendron HybridR. maximum X R. wardii var wardiiHybridized By: Fetterhoff, W.M.. Gibsonia, Pennsylvania, USA, 1964 |
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R. 'Edith'Rhododendron HybridR. maximum X ?Hybridized By: Pride, O.S.. Butler, Pennsylvania, USA, 1978 |
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R. 'June Achievement'Rhododendron HybridR. maximum X R. fortunei ssp discolorHybridized By: Wister, J.C.. Swarthmore, PA, USA, 1953 More information and pictures |
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R. 'maximum x thomsonii'Rhododendron HybridR. maximum X R. thomsonii ssp thomsoniiHybridized By: No hybridiser registered |
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R. 'maximum x calophytum'Rhododendron HybridR. maximum X R. calophytum var calophytumHybridized By: Kehr, A.E.. Hendersonville, North Carolina, USA More information and pictures |
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R. 'Delp's Fireking'Rhododendron HybridR. maximum X R. 'Gertrud Schäle Group'Hybridized By: Delp Weldon E.. Harrisville, Pensylvania, USA, 1986 |
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R. 'maximum x vernicosum'Rhododendron HybridR. maximum X R. vernicosumHybridized By: No hybridiser registered |
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R. 'Arctic Snow'Rhododendron HybridR. maximum X R. brachycarpum ssp tigerstedtiiHybridized By: Behring, R.. St. Catharines, Ontario, Canada, 1973 More information and pictures |
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R. 'Prizewinner'Rhododendron HybridR. maximum X R. 'Brookville x Mary Garrison'Hybridized By: Delp Weldon E.. Harrisville, Pensylvania, USA, 1974 |
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R. 'Albert Close'Rhododendron HybridR. maximum X R. 'Mrs Jamie Fraser'Hybridized By: Fraser, G.. Vancouver Island, BC, Canada, 1944 More information and pictures |
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R. 'Mrs John Clutton'Rhododendron HybridR. maximum X ?Hybridized By: Waterer, H. (Knaphill). Woking, Surrey (Knaphill), UK, 1865 |
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R. 'Helen Ring'Rhododendron HybridR. maximum X R. arboreum ssp arboreumHybridized By: Kehr, A.E.. Hendersonville, North Carolina, USA, 1968 |
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R. 'Midsummer'Rhododendron HybridR. maximum X ?Hybridized By: Waterer (Bagshot). Surrey, England, 1938 More information and pictures |
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R. 'Mountain Marriage'Rhododendron HybridR. maximum X R. degronianum ssp yakushimanumHybridized By: Kehr, A.E.. Hendersonville, North Carolina, USA, 1964 |
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R. 'Paul Vossberg'Rhododendron HybridR. maximum X R. thomsonii ssp thomsoniiHybridized By: Knippenberg, Mrs. J. F., 1975 |
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R. 'Ice Baby'Rhododendron HybridR. maximum X R. brachycarpum ssp tigerstedtiiHybridized By: Delp Weldon E.. Harrisville, Pensylvania, USA, 1974 |
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R. 'Judy Spillane'Rhododendron HybridR. maximum X R. 'Janet Blair'Hybridized By: Wister, J.C.. Swarthmore, PA, USA, 1958 More information and pictures |
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R. 'Jingle Jungle'Rhododendron HybridR. maximum X R. 'Jingle Bells'Hybridized By: Fetterhoff, W.M.. Gibsonia, Pennsylvania, USA, 1984 |
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R. 'maximum x ponticum'Rhododendron HybridR. maximum X R. ponticumHybridized By: No hybridiser registered |
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R. 'maximum x Goldsworth Orange'Rhododendron HybridR. maximum X R. 'Goldsworth Orange'Hybridized By: No hybridiser registered |
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R. 'maximum x fortunei'Rhododendron HybridR. maximum X R. fortunei ssp fortuneiHybridized By: No hybridiser registered |
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