Index

R. arboreum ssp cinnamomeum var roseum Species Subgenus: Hymenanthes Section: Pontica Subsection: Arborea More information and pictures
R. arboreum ssp cinnamomeum var roseum f album Species More information
R. arboreum ssp delavayi Species Subgenus: Hymenanthes Section: Pontica Subsection: Arborea More information and pictures
*R. arboreum* ssp delavayi 'Margum Castle'** Rhododendron Species Selection More information
R. arboreum ssp delavayi var albomentosum Species Subgenus: Hymenanthes Section: Pontica Subsection: Arborea More information
R. arboreum ssp delavayi var delavayi Species Subgenus: Hymenanthes Section: Pontica Subsection: Arborea More information
R. arboreum ssp delavayi var peramoenum Species Subgenus: Hymenanthes Section: Pontica Subsection: Arborea More information
R. arboreum ssp nilagiricum Species Subgenus: Hymenanthes Section: Pontica Subsection: Arborea More information and pictures
*R. arboreum* ssp nilagiricum 'Noyo Chief' Rhododendron Species Selection Selected By:** Bowman, P.J. More information and pictures
R. arboreum ssp zeylanicum Species Subgenus: Hymenanthes Section: Pontica Subsection: Arborea More information and pictures
R. 'arboreum ssp zeylanicum x Pink Pearl' Rhododendron Hybrid R. arboreum ssp zeylanicum X R. 'Pink Pearl' More information
R. arboreum var album Species More information
R. 'arboreum x decorum' Rhododendron Hybrid R. arboreum ssp arboreum X R. decorum ssp decorum More information
R. 'arboreum x Elizabeth Group' Rhododendron Hybrid R. arboreum ssp arboreum X R. 'Elizabeth Group' More information
R. 'arboreum x Elizabeth Group X arboreum' Rhododendron Hybrid R. 'arboreum x Elizabeth Group' X R. arboreum ssp arboreum More information
R. 'arboreum x griffithianum' Rhododendron Hybrid R. arboreum ssp arboreum X R. griffithianum More information
R. 'arboreum x macrophyllum' Rhododendron Hybrid R. arboreum ssp arboreum X R. macrophyllum More information
R. 'Arbsutch Group' Rhododendron Hybrid ? X ? Hybridized By: Magor, E.J.P. More information
R. archboldianum Species Subgenus: Rhododendron Section: Vireya Subsection: Euvireya More information
R. 'Archiduc Ernest' Azalea Hybrid ? X ? Hybridized By: Van Houtte, L. B. (Louis Benoit) More information
R. 'Archiduc Sigismund' Azalea Hybrid ? X ? Hybridized By: Van Houtte, L. B. (Louis Benoit) More information
R. 'Arctic' Azalea Hybrid ? X ? Hybridized By: Morrison, B.Y. More information
R. 'Arctic Bear' Rhododendron Hybrid ? X ? Hybridized By: Gordon, R.C More information
R. 'Arctic Dawn' Rhododendron Hybrid ? X ? Hybridized By: Behring, R. More information
R. 'Arctic Dreams' Rhododendron Hybrid R. 'Horizon Lakeside' X R. 'Arctic Gold' Hybridized By: Barlup, Jim More information and pictures
R. 'Arctic Fox' Azalea Hybrid R. 'Panda' X R. mucronatum var mucronatum Hybridized By: Cox, P.A. & K.N.E. More information and pictures
R. 'Arctic Glow' Rhododendron Hybrid R. minus Carolinianum Group X R. dauricum 'Arctic Pearl' Hybridized By: Lewis, D. More information and pictures
R. 'Arctic Gold' Rhododendron Hybrid ? X ? Hybridized By: Mezitt, E.V. More information and pictures
R. 'Arctic Snow' Rhododendron Hybrid R. maximum X R. brachycarpum ssp tigerstedtii Hybridized By: Behring, R. More information and pictures
R. 'Arctic Tern' Rhododendron Hybrid R. trichostomum X R. groenlandicum Hybridized By: Larson, H.L. More information and pictures
R. 'Ardent Beau' Rhododendron Hybrid R. 'Billy Budd' X R. 'Etta Burrows' Hybridized By: O'Rourke, H. More information
R. 'Ardeur' Azalea Hybrid ? X ? Hybridized By: de Coninck-Dervaes, L. More information and pictures
R. 'Arends Favorite' Rhododendron Hybrid ? X ? More information and pictures
R. arenicola Species Subgenus: Rhododendron Section: Vireya Subsection: Euvireya More information
R. arfakianum Species Subgenus: Rhododendron Section: Vireya Subsection: Euvireya More information
R. 'Argentina' Rhododendron Hybrid R. 'catawbiense x yakushimanum' X R. 'Fanfare x Gertrud Schäle Group' Hybridized By: Leach, Dr. David G. More information and pictures
R. argipeplum Species Subgenus: Hymenanthes Section: Pontica Subsection: Barbata More information and pictures
R. 'Argosy' Rhododendron Hybrid R. fortunei ssp discolor X R. auriculatum Hybridized By: Rothschild, L. de More information and pictures
R. 'Argosy Group' Rhododendron Cultivar group R. fortunei ssp discolor X R. auriculatum Hybridized By: Rothschild, L. de More information and pictures
R. 'Argosy Snow White' Rhododendron Hybrid ? X ? More information
R. argyrophyllum ssp argyrophyllum Species Subgenus: Hymenanthes Section: Pontica Subsection: Argyrophylla More information and pictures
R. argyrophyllum ssp hypoglaucum Species Subgenus: Hymenanthes Section: Pontica Subsection: Argyrophylla More information and pictures
*R. argyrophyllum* ssp hypoglaucum 'Heane Wood' Rhododendron Species Selection Selected By:** Hardy, Maj. A.E. More information
R. argyrophyllum ssp nankingense Species Subgenus: Hymenanthes Section: Pontica Subsection: Argyrophylla More information and pictures
*R. argyrophyllum* ssp nankingense 'Chinese Silver' Rhododendron Species Selection Selected By:** Crown Estate Commissioners More information and pictures
R. argyrophyllum ssp omeiense Species Subgenus: Hymenanthes Section: Pontica Subsection: Argyrophylla More information and pictures
R. argyrophyllum var cupulare Species More information
R. 'Ariadne' Azalea Hybrid ? X ? Hybridized By: Smet-Duvivier. L. de More information
R. 'Ariadne' Azalea Hybrid ? X ? Hybridized By: Dalličre, A. More information
R. 'Ariadne' Rhododendron Hybrid R. griffithianum X R. 'Grand Duke of Würtemberg' Hybridized By: Van Nes, C.B. More information and pictures

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R. arboreum ssp cinnamomeum var roseum

Species

R. arboreum ssp cinnamomeum var roseum f album

Species

R. arboreum ssp delavayi

Species

R. arboreum ssp delavayi 'Margum Castle'

Rhododendron Species Selection

R. arboreum ssp delavayi var albomentosum

Species

R. arboreum ssp delavayi var delavayi

Species

R. arboreum ssp delavayi var peramoenum

Species

R. arboreum ssp nilagiricum

Species

R. arboreum ssp nilagiricum 'Noyo Chief'

Rhododendron Species Selection

R. arboreum ssp zeylanicum

Species

R. 'arboreum ssp zeylanicum x Pink Pearl'

Rhododendron Hybrid

R. arboreum ssp zeylanicum X R. 'Pink Pearl'

R. arboreum var album

Species

R. 'arboreum x decorum'

Rhododendron Hybrid

R. arboreum ssp arboreum X R. decorum ssp decorum

R. 'arboreum x Elizabeth Group'

Rhododendron Hybrid

R. arboreum ssp arboreum X R. 'Elizabeth Group'

R. 'arboreum x Elizabeth Group X arboreum'

Rhododendron Hybrid

R. 'arboreum x Elizabeth Group' X R. arboreum ssp arboreum

R. 'arboreum x griffithianum'

Rhododendron Hybrid

R. arboreum ssp arboreum X R. griffithianum

R. 'arboreum x macrophyllum'

Rhododendron Hybrid

R. arboreum ssp arboreum X R. macrophyllum

R. 'Arbsutch Group'

Rhododendron Hybrid

? X ?

R. archboldianum

Species

R. 'Archiduc Ernest'

Azalea Hybrid

? X ?

R. 'Archiduc Sigismund'

Azalea Hybrid

? X ?

R. 'Arctic'

Azalea Hybrid

? X ?

R. 'Arctic Bear'

Rhododendron Hybrid

? X ?

R. 'Arctic Dawn'

Rhododendron Hybrid

? X ?

R. 'Arctic Dreams'

Rhododendron Hybrid

R. 'Horizon Lakeside' X R. 'Arctic Gold'

R. 'Arctic Fox'

Azalea Hybrid

R. 'Panda' X R. mucronatum var mucronatum

R. 'Arctic Glow'

Rhododendron Hybrid

R. minus Carolinianum Group X R. dauricum 'Arctic Pearl'

R. 'Arctic Gold'

Rhododendron Hybrid

? X ?

R. 'Arctic Snow'

Rhododendron Hybrid

R. maximum X R. brachycarpum ssp tigerstedtii

**R. arboreum ssp delavayi 'Margum Castle'**

**R. arboreum ssp nilagiricum 'Noyo Chief'**

**R. argyrophyllum ssp hypoglaucum 'Heane Wood'**

**R. argyrophyllum ssp nankingense 'Chinese Silver'**