Rhododendron periclymenoides 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 periclymenoides tested was from a wild population located near Hamden, Connecticut.
Summary of Ploidy Levels
Diploid Rhododendron periclymenoides,
Diploid Rhododendron periclymenoides 'Appalachian Spring',
Diploid Rhododendron periclymenoides 'Doug Horegan'
Source: George Hibben
Source: Audra State Park, West Virginia
Source: Broken Arrow Nursery
Source: Connecticut College Arboretum Accession Number: 81-90-B
Source: Connecticut College Arboretum Accession Number: 81-90-E
Source: Longwood Gardens Accession Number: 2002-0208-B
John and Sally Perkins
