R. 'Madonna'Rhododendron HybridR. 'decorum x griersonianum' X R. 'America'Hybridized By: Gable, J.B.. Stewartstown, Pennsylvania, USA, 1941 |
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R. 'Degram Group'Rhododendron Cultivar groupR. 'decorum x griersonianum' X R. 'America'Hybridized By: Gable, J.B.. Stewartstown, Pennsylvania, USA, 1946 |
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