Rhododendron austrinum has been determined to be a tetraploid 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 austrinum was also determined to be a tetraploid using flow cytometry by Dr. Thomas Ranney, J.R. Jones, and Nathan Lynch.
Summary of Ploidy Levels
Tetraploid Rhododendron austrinum,
Tetraploid Rhododendron austrinum Album Form,
Tetraploid Rhododendron austrinum 'Millie Mac'
Source: Arnold Arboretum Accession Number: 1403-86-A
Source: Connecticut College Arboretum Accession Number: 81-79-C
Source: Highstead Arboretum Accession Number: 93-79-K
John and Sally Perkins