Rhododendron 'Dame Nellie Melba', which is 1926 Sir Edmund Loder hybrid documented as 'Standishii' x R. arboreum ssp arboreum, has been determined to be a triploid using flow cytometry by
Dr. João Loureiro, Dr. Silvia Castro, José Cerca, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
Summary of Ploidy Levels
Triploid 'Dame Nellie Melba'
Source: John Thornton
John and Sally Perkins
