Index

R. maximum 'Great Laurel'

Rhododendron Species Selection

Selected By: Unknown

Subgenus: Hymenanthes
Section: Pontica
Subsection: Pontica

R. maximum 'Harkness'

Rhododendron Species Selection

Selected By: Unknown

Subgenus: Hymenanthes
Section: Pontica
Subsection: Pontica

R. maximum 'Independence'

Rhododendron Species Selection

Selected By: Unknown

Subgenus: Hymenanthes
Section: Pontica
Subsection: Pontica

R. maximum 'Leachii'

Rhododendron Species Selection

Selected By: Unknown

Subgenus: Hymenanthes
Section: Pontica
Subsection: Pontica

R. maximum 'Little's Enchanting Shells'

Rhododendron Species Selection

Selected By: Little, P.L. , Piping Tree Gardens, Beaverdam, Virgina , USA, 1990

Subgenus: Hymenanthes
Section: Pontica
Subsection: Pontica

R. maximum 'Marginatum'

Rhododendron Species Selection

Selected By: Leroy, A. , Angers , France, 1868

Subgenus: Hymenanthes
Section: Pontica
Subsection: Pontica

R. maximum 'Mount Mitchell'

Rhododendron Species Selection

Selected By: Unknown

Subgenus: Hymenanthes
Section: Pontica
Subsection: Pontica

R. maximum 'Nassau Red'

Rhododendron Species Selection

Selected By: Unknown

Subgenus: Hymenanthes
Section: Pontica
Subsection: Pontica

R. maximum 'Rosebay'

Rhododendron Species Selection

Selected By: Unknown

Subgenus: Hymenanthes
Section: Pontica
Subsection: Pontica

R. maximum 'Summertime'

Rhododendron Species Selection

Selected By: Crown Estate Commissioners , Windsor, Berkshire , England, 1974

Subgenus: Hymenanthes
Section: Pontica
Subsection: Pontica

R. maximum var album

Species

R. 'maximum x calophytum'

Rhododendron Hybrid

R. maximum X R. calophytum var calophytum

Hybridized By: Kehr, A.E.. Hendersonville, North Carolina, USA

R. 'maximum x catawbiense'

Rhododendron Hybrid

R. maximum X R. catawbiense

Hybridized By: No hybridiser registered

R. 'maximum x fortunei'

Rhododendron Hybrid

R. maximum X R. fortunei ssp fortunei

Hybridized By: No hybridiser registered

R. 'maximum x Goldsworth Orange'

Rhododendron Hybrid

R. maximum X R. 'Goldsworth Orange'

Hybridized By: No hybridiser registered

R. 'maximum x Goldsworth Orange X America x Gertrud Schäle Group'

Rhododendron Hybrid

R. 'maximum x Goldsworth Orange' X R. 'America x Gertrud Schäle Group'

Hybridized By: No hybridiser registered

R. 'maximum x haematodes'

Rhododendron Hybrid

R. maximum X R. haematodes ssp haematodes

Hybridized By: Unknown

R. 'maximum x Honeymoon'

Rhododendron Hybrid

R. maximum X R. 'Honeymoon'

Hybridized By: No hybridiser registered

R. 'maximum x ponticum'

Rhododendron Hybrid

R. maximum X R. ponticum

Hybridized By: No hybridiser registered

R. 'maximum x thomsonii'

Rhododendron Hybrid

R. maximum X R. thomsonii ssp thomsonii

Hybridized By: No hybridiser registered

R. 'maximum x thomsonii X fortunei x haematodes'

Rhododendron Hybrid

R. 'maximum x thomsonii' X R. fortunei ssp fortunei 'fortunei x haematodes'

Hybridized By: No hybridiser registered

R. 'maximum x vernicosum'

Rhododendron Hybrid

R. maximum X R. vernicosum

Hybridized By: No hybridiser registered

R. 'maximum x yakushimanum'

Rhododendron Hybrid

R. maximum X R. degronianum ssp yakushimanum

Hybridized By: No hybridiser registered

R. 'maximum x yakushimanum X Adele's Yellow'

Rhododendron Hybrid

R. 'maximum x yakushimanum' X R. 'Adele's Yellow'

Hybridized By: No hybridiser registered

R. 'Maxine Childers'

Rhododendron Hybrid

R. strigillosum X R. 'Elizabeth Group'

Hybridized By: Childers, A.A & M., 1958

R. maxwellii

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. 'Maxwellii'

Azalea Hybrid

? X ?

Hybridized By: Unknown

R. 'Maxwellii x Snow'

Azalea Hybrid

R. 'Maxwellii' X R. 'Snow'

Hybridized By: No hybridiser registered

R. 'May Day'

Rhododendron Hybrid

R. haematodes ssp haematodes X R. griersonianum

Hybridized By: Williams, A.M., 1932

R. 'May Day Group'

Rhododendron Cultivar group

R. haematodes ssp haematodes X R. griersonianum

Hybridized By: Williams, A.M., 1932

R. 'May Moonlight'

Rhododendron Hybrid

? X ?

Hybridized By: Wister, J.C.. Swarthmore, PA, USA, 1945

R. 'May Morn'

Rhododendron Hybrid

R. 'May Day Group' X R. beanianum

Hybridized By: Aberconway, Lord. Bodnant, Tal-y-Cafn, Wales, 1935

R. 'May Morn x proteoides'

Rhododendron Hybrid

X R. proteoides

Hybridized By: No hybridiser registered

R. 'May Queen Group'

Rhododendron Cultivar group

? X ?

Hybridized By: Unknown

R. 'May Song'

Rhododendron Hybrid

R. 'Bow Bells' X R. 'Day Dream'

Hybridized By: Grace, G.D.

R. 'May Young'

Azalea Hybrid

R. nakaharae X R. 'Rosebud'

Hybridized By: Griswold, G. | Kirkland, WA | USA, 1974

R. 'Mayaro'

Azalea Hybrid

R. 'Washington State Centennial' X R. 'Raimunde x Twilight Sky'

Hybridized By: Hübbers, K-H. | Kranenburg | Germany, 1994

R. mayebarae

Species

Subgenus: Tsutsusi
Section: Brachycalyx

R. 'Mayo'

Azalea Hybrid

R. 'Washington State Centennial' X R. 'Arouca'

Hybridized By: Hübbers, K-H. | Kranenburg | Germany, 1994

R. 'Mazais Jefiņš'

Azalea Hybrid

R. kosterianum X R. prinophyllum

Hybridized By: Kondratovičs, Rihard | Riga | Latvia, 1974

R. 'Mazurka'

Azalea Hybrid

? X ?

Hybridized By: Waterer, H. (Knaphill) | Woking, Surrey (Knaphill) | UK, 1958

R. 'Mcnabii'

Rhododendron Hybrid

? X ?

Hybridized By: Unknown

R. 'Mead'

Rhododendron Hybrid

R. 'Sunspray' X R. 'Lem's Cameo'

Hybridized By: Olson, J.. Fall Creek, Oregon, USA, 2005

R. 'Meadowbrook'

Rhododendron Hybrid

R. 'Mrs Charles S Sargent' X R. 'Everestianum'

Hybridized By: Vossberg, P.D.. Westbury Rose Co., Long Island, New York, USA, 1920

R. 'Meadowgold'

Rhododendron Hybrid

R. burmanicum X R. 'Lemon Mist'

Hybridized By: Scott, R.W., 1967

R. meddianum var atrokermesinum

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Thomsonia

R. meddianum var meddianum

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Thomsonia

R. 'Medea Group'

Rhododendron Cultivar group

R. 'Red Admiral Group' X R. sutchuenense

Hybridized By: Magor, E.J.P.. Lamellan, St. Tudy, Cornwall, England, 1920

R. medoense

Species

Subgenus: Azaleastrum
Section: Azaleastrum

R. medoense var adenostylum

Species

R. 'Medusa Group'

Rhododendron Cultivar group

R. dichroanthum ssp scyphocalyx X R. griersonianum

Hybridized By: Aberconway, Lord. Bodnant, Tal-y-Cafn, Wales, 1928