A plant labeled Rhododendron alabamense has been determined to be a tetraploid using flow cytometry by
Dr. João Loureiro, Dr. Silvia Castro, José Cerca Oliveira, 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.
The ploidy test indicates this plant may instead be Rhododendron colemanii.
Summary of Ploidy Levels
Diploid Rhododendron alabamense,
Tetraploid Rhododendron colemanii,
Tetraploid Rhododendron "alabamense not"
Source: Rarefind Nursery
John and Sally Perkins
