Rhododendron flammeum 'Harry's Speciosum' has been determined to be a diploid 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.
Rhododendron flammeum was also determined to be a diploid using flow cytometry by Dr. Thomas Ranney, J.R. Jones, and Nathan Lynch.
Summary of Ploidy Levels
Diploid Rhododendron flammeun,
Diploid Rhododendron flammeum 'Brick Ruffles',
Diploid Rhododendron flammeum 'Harry's Speciosum',
Diploid Rhododendron flammeum 'Hazel Hamilton'
Source: Longwood Gardens
John and Sally Perkins
