"(cumberlandense X lutem) not" is a Diploid

Three seedlings of Rhododendron "(cumberlandense X lutem) not" have been determined to be a diploid 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.

Ploidy testing indicates that Rhododendron luteum may not be the pollen parent of this hybrid.

Summary of Ploidy Levels

Diploid Rhododendron cumberlandense,
Diploid 3 Seedlings of "(cumberlandense X luteum) not",
Tetraploid Rhododendron luteum

Source: Bruce Clyburn

John and Sally Perkins

Reminder: Eastern Regional Conference @ Fri Oct 21 10am - Sun Oct 23, 2011 12pm (ARS Massachusetts Chapter Calendar)

more details » Eastern Regional Conference Hosted by the Middle Atlantic Chapter the Eastern Regional Conference will be held in Richmond, Virginia, October 21 - 23, 2011, at the Doubletree Hotel Richmond Airport. Highlights include talks by Elizabeth Mundy, owner of Acer Acres Japanese Maples, and Eureka Chapter's Tim Walsh on the Humboldt Botanical Garden. There will be plant sales, a plant auction and book sales at the event. The ARS Board Meeting will be held on Friday, Octoer 21. Mark your calendar. When Fri Oct 21 10am – Sun Oct 23, 2011 12pm Eastern Time Where Doubletree Hotel Richmond Airport, Richmond, Virginia (map) Calendar ARS Massachusetts Chapter Calendar Who • John.A.Perkins@gmail.com - creator

Invitation from Google Calendar You are receiving this email at the account john.a.perkins@gmail.com because you set a reminder for this event on the calendar ARS Massachusetts Chapter Calendar. You can change your reminders for specific events in the event details page in https://www.google.com/calendar/.

"(flammeum X calendulaceum) not" is a Diploid

Rhododendron "(flammeum X calendulaceum) not", which is a John Thornton hybrid, has been determined to be a diploid 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.

Ploidy testing indicates that Rhododendron calendulaceum may not be the pollen parent of this hybrid.

Summary of Ploidy Levels

Diploid Rhododendron flammeum,
Diploid "(flammeum X calendulaceum) not",
Tetraploid Rhododendron calendulaceum

Source: John Thronton

John and Sally Perkins

'Consul Pecher' is a Diploid

Rhododendron 'Consul Pecher', which is a Rhododendron molle hybrid, has been determined to be a diploid 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.

Summary of Ploidy Levels

Diploid Rhododendron molle,
Diploid 'Consul Pecher'

Source: Arnold Arboretum Accession Number: 837-59

John and Sally Perkins

Reminder: Massachusetts Chapter Meeting @ Wed Oct 19 7pm - 9:30pm (ARS Massachusetts Chapter Calendar)

more details » Massachusetts Chapter Meeting Foliage Show Larry Wallace When Wed Oct 19 7pm – 9:30pm Eastern Time Where Elm Bank Wellsley, MA (map) Calendar ARS Massachusetts Chapter Calendar Who • john.a.perkins@gmail.com - creator

Invitation from Google Calendar You are receiving this email at the account john.a.perkins@gmail.com because you set a reminder for this event on the calendar ARS Massachusetts Chapter Calendar. You can change your reminders for specific events in the event details page in https://www.google.com/calendar/.

"Between Two Roads" is a Diploid

Rhododendron "Between Two Roads" has been determined to be a diploid 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.

Summary of Ploidy Levels

Diploid "Between Two Roads"

Source: Mike Creel

John and Sally Perkins

'Creel's Confetti' is a Diploid

Rhododendron 'Creel's Confetti' has been determined to be a diploid 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.

Summary of Ploidy Levels

Diploid 'Creel's Confetti'

Source: Mike Creel

John and Sally Perkins

'Creel's Alabammy' is a Diploid

Rhododendron 'Creel's Alabammy', which is a natural hybrid of Rhododendron alabamense, has been determined to be a diploid 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.

Summary of Ploidy Levels

Diploid Rhododendron alabamense,
Diploid 'Creel's Alabammy'

Source: Mike Creel

John and Sally Perkins

Reminder: Eastern Regional Conference @ Fri Oct 21 10am - Sun Oct 23, 2011 12pm (ARS Massachusetts Chapter Calendar)

more details » Eastern Regional Conference Hosted by the Middle Atlantic Chapter the Eastern Regional Conference will be held in Richmond, Virginia, October 21 - 23, 2011, at the Doubletree Hotel Richmond Airport. Highlights include talks by Elizabeth Mundy, owner of Acer Acres Japanese Maples, and Eureka Chapter's Tim Walsh on the Humboldt Botanical Garden. There will be plant sales, a plant auction and book sales at the event. The ARS Board Meeting will be held on Friday, Octoer 21. Mark your calendar. When Fri Oct 21 10am – Sun Oct 23, 2011 12pm Eastern Time Where Doubletree Hotel Richmond Airport, Richmond, Virginia (map) Calendar ARS Massachusetts Chapter Calendar Who • john.a.perkins@gmail.com - creator

Invitation from Google Calendar You are receiving this email at the account john.a.perkins@gmail.com because you set a reminder for this event on the calendar ARS Massachusetts Chapter Calendar. You can change your reminders for specific events in the event details page in https://www.google.com/calendar/.

'Creekside' is a Diploid

Rhododendron 'Creekside', which is a natural hybrid of Rhododendron arborescens, has been determined to be a diploid 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.

Rhododendron 'Creekside' may, also, contain Rhododendron viscosum. Rhododendron 'Creekside' is sometimes called "Running Arborescens".

Summary of Ploidy Levels

Diploid Rhododendron arborescens,
Diploid Rhododendron viscosum,
Diploid 'Creekside'

Source: John and Sally Perkins

John and Sally Perkins

'Pink Puff' is a Diploid

Rhododendron 'Pink' Puff', which is a natural hybrid of Rhododendron arborescens and Rhododendron cumberlandense, has been determined to be a diploid 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.

Summary of Ploidy Levels

Diploid Rhododendron arborescens,
Diploid Rhododendron cumberlandense,
Diploid Rhododendron arborescens X Rhododendron cumberlandense,
Diploid Rhododendron cumberlandense X Rhododendron rborescens,
Diploid 'Pink Puff'

Source: Connecticut College Arboretum

John and Sally Perkins

cumberlandense X arborescens is a Diploid

Rhododendron cumberlandense X Rhododendron arborescens has been determined to be a diploid 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.

Summary of Ploidy Levels

Diploid Rhododendron arborescens,
Diploid Rhododendron cumberlandense,
Diploid Rhododendron arborescens X Rhododendron cumberlandense,
Diploid Rhododendron cumberlandense X Rhododendron rborescens,
Diploid 'Pink Puff'

Source: George Hibben

John and Sally Perkins

arborescens X cumberlandense is a Diploid

Rhododendron arborescens X Rhododendron cumberlandense has been determined to be a diploid 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.

Summary of Ploidy Levels

Diploid Rhododendron arborescens,
Diploid Rhododendron cumberlandense,
Diploid Rhododendron arborescens X Rhododendron cumberlandense,
Diploid Rhododendron cumberlandense X Rhododendron rborescens,
Diploid 'Pink Puff'

Source: George Hibben

John and Sally Perkins

Reminder: Board Meeting @ Wed Oct 12 7:30pm - 9pm (ARS Massachusetts Chapter Calendar)

more details » Board Meeting When Wed Oct 12 7:30pm – 9pm Eastern Time Where Hardings (map) Calendar ARS Massachusetts Chapter Calendar Who • John Perkins - creator

Invitation from Google Calendar You are receiving this email at the account john.a.perkins@gmail.com because you set a reminder for this event on the calendar ARS Massachusetts Chapter Calendar. You can change your reminders for specific events in the event details page in https://www.google.com/calendar/.

'Toy' is a Diploid

Rhododendron 'Toy', which is a Polly Hill selection, has been determined to be a diploid 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.

Summary of Ploidy Levels

Diploid 'Toy'

Source: George Hibben

John and Sally Perkins

'Casille' is a Diploid

Rhododendron 'Casille' has been determined to be a diploid 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 Pastel series which includes 'Casille' is documented to contain Rhododendron alabamense, Rhododendron canescens, and Rhododendron flammeum.

Summary of Ploidy Levels

Diploid Rhododendron alabamense,
Diploid Rhododendron canescens,
Diploid Rhododendron flammeum,
Diploid 'Casille',
Diploid "Pastel #6",
Diploid "Pastel #7",
Diploid "Pastel #20"

Source: Woodlanders Nursery

John and Sally Perkins

"(viscosum X arborescens) not" is a Tetraploid

Two plants labeled Rhododendron viscosum X Rhododendron arborescens have 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 contain Rhododendron atlanticum. Both of thedse plants were raised by George Hibben.

Summary of Ploidy Levels

Diploid Rhododendron viscosum,
Diploid Rhododendron arborescens,
Tetraploid Rhododendron atlanticum,
Tetraploid "(Rhododendron viscosum X Rhododendron arborescens) not"

Source: Arnold Arboretum Accession Number: 139-98-A
Source: George Hibben

John and Sally Perkins

Rhododendron "alabamense not" is a Tetraploid

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

"Speciosum Yellow #3" is a Tetraploid

Rhododendron "Speciosum Yellow #3" 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.

Clearly Rhododendron "Speciosum Yellow #3" is not straight Rhododendron flammeun.

Summary of Ploidy Levels

Diploid Rhododendron flammeun,
Tetraploid "Speciosum Yellow #3"

Source: Rarefind Nursery

John and Sally Perkins

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