Index

R. 'Radistrotum'

Rhododendron Hybrid

R. calostrotum ssp keleticum Radicans Group X R. calostrotum ssp calostrotum

Hybridized By: Arends,

More information and pictures

R. 'Radium Group'

Rhododendron Cultivar group

R. griersonianum X R. 'Earl of Athlone'

Hybridized By: Crosfield, J. J.

More information and pictures

R. 'Radmosum Group'

Rhododendron Cultivar group

R. calostrotum ssp keleticum Radicans Group X R. racemosum

Hybridized By: Thacker, T.C.

R. 'Radnor'

Rhododendron Hybrid

R. 'Red Cloud' X R. degronianum ssp yakushimanum 'Koichiro Wada'

Hybridized By: Reese, W.A.

R. 'Raeanum'

Rhododendron Hybrid

R. 'maximum x ponticum' X R. 'Altaclerense Group'

Hybridized By: Standish & Noble

R. 'Raeburn'

Rhododendron Hybrid

R. racemosum X R. tephropeplum

Hybridized By: Ingram, C.

R. 'Ragan's Marietta'

Rhododendron Hybrid

? X ?

Hybridized By: Ragan, W.A

R. 'Ragan's Pride'

Rhododendron Hybrid

? X ?

Hybridized By: Ragan, W.A

R. 'Ragged Robin'

Rhododendron Hybrid

R. griffithianum X ?

Hybridized By: Waterer (Bagshot)

R. 'Raging Bull'

Rhododendron Hybrid

R. 'Fantastica' X R. 'The Honourable Jean Marie de Montague'

Hybridized By: Whitman, M.J.

R. 'Ragtime'

Rhododendron Hybrid

R. 'Tony's Gift' X R. 'Serenata'

Hybridized By: Delp Weldon E.

R. 'Raijin'

Azalea Hybrid

? X ?

Hybridized By: Japan

R. 'Raiko'

Azalea Hybrid

R. Hitomaru X ?

Hybridized By: Japan

R. 'Raimunde'

Azalea Hybrid

R. 'Betty Kelly' X R. 'Cecile'

Hybridized By: Hachmann, Hans

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R. 'Raimunde x Twilight Sky'

Azalea Hybrid

R. 'Raimunde' X R. 'Twilight Sky'

R. 'Rain Dance'

Azalea Hybrid

R. 'Nancy of Robinhill' X R. 'Gartrell's Lower Rock'

Hybridized By: Gartrell, R. D.

R. 'Rain Fire'

Azalea Hybrid

R. austrinum 'Moonbeam' X R. mucronatum var mucronatum 'Lilacinum'

Hybridized By: Harris, J.O.

R. 'Rain of Gold'

Rhododendron Hybrid

? X ?

Hybridized By: Kersey, R.J.

R. 'Rainbow'

Rhododendron Hybrid

R. griffithianum X ?

Hybridized By: Slocock, Walter C.

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R. 'Rainbow Bright'

Rhododendron Hybrid

? X R. 'Dead Ringer'

Hybridized By: Delp Weldon E.

R. 'Rainbow's End'

Rhododendron Hybrid

R. 'Butter Brickle' X R. 'Fabia Group x Lem's Early Orange'

Hybridized By: Lofthouse, J.G.

R. 'Rainier Pink'

Rhododendron Hybrid

? X ?

R. 'Rainier Red'

Azalea Hybrid

R. 'Exquisite' X R. 'Crimson Glory'

Hybridized By: Smith, B.

R. 'Raisa'

Rhododendron Hybrid

R. brachycarpum ssp tigerstedtii X ?

Hybridized By: Uosukainen, Marjatta, Dr. Mrs.

R. 'Raisa'

Rhododendron Hybrid

R. hippophaeoides var hippophaeoides X R. polycladum

Hybridized By: Greer, Harold E.

R. 'Rajah'

Rhododendron Hybrid

R. neriiflorum ssp neriiflorum Euchaites Group X R. thomsonii ssp thomsonii

Hybridized By: Harrison, E.G.W.W.

R. 'Rajah'

Rhododendron Hybrid

? X ?

Hybridized By: Standish, J.

R. 'Rajomon'

Azalea Hybrid

? X ?

Hybridized By: Wada, K.

R. 'Rajpur'

Rhododendron Hybrid

R. 'Jalisco Group' X R. 'Trianon'

Hybridized By: Rothschild, Edmund Leopold de

R. 'Rakan'

Azalea Hybrid

? X ?

Hybridized By: Ito, Ihei

R. 'Rakete'

Rhododendron Hybrid

R. 'Caractatus' X R. 'Louis Pasteur'

Hybridized By: Hermann, E.

R. 'Rakuzan'

Azalea Hybrid

? X ?

Hybridized By: Japan

R. 'Ralph'

Azalea Hybrid

R. mucronatum var mucronatum X R. 'Blaauw's Pink'

Hybridized By: Van de Ven, H.

R. 'Ralph Pape'

Rhododendron Hybrid

R. 'Sunset Yates' X R. 'Pink Punch'

Hybridized By: Yates, H.R.

R. 'Ralph Purnell'

Rhododendron Hybrid

R. cerasinum X R. 'Doncaster'

Hybridized By: Thacker, T.C.

R. 'Ralph Sanders'

Rhododendron Hybrid

? X ?

Hybridized By: Waterer, H. (Knaphill)

R. 'Ramapo'

Rhododendron Hybrid

R. minus Carolinianum Group X R. fastigiatum

Hybridized By: Nearing, G.G.

More information and pictures

R. 'Ramaya'

Rhododendron Hybrid

R. 'Nancy Evans' X R. 'Cream Glory'

Hybridized By: Workman, Y.

R. 'Rambling Rose'

Azalea Hybrid

? X ?

Hybridized By: Kerrigan, Howard

R. 'Ramella'

Rhododendron Hybrid

? X ?

Hybridized By: Parco Burcina

R. 'Ramillies Group'

Rhododendron Cultivar group

R. 'Ethel Group' X R. 'Redwing Group'

Hybridized By: Aberconway, Lord

R. ramipilosum

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Thomsonia

R. 'Ramolet'

Rhododendron Hybrid

R. 'Ramapo' X ?

Hybridized By: Foster, H.L.

R. 'Ramona'

Azalea Hybrid

? X ?

Hybridized By: Cuthbert, Messrs

R. 'Ramona'

Rhododendron Hybrid

R. 'Huntsman Group' X R. neriiflorum ssp neriiflorum

Hybridized By: Ramsden, Sir John

R. ramsdenianum

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Irrorata

R. 'Ramsey Tinsel'

Rhododendron Hybrid

R. 'Chesapeake' X ?

Hybridized By: Nearing, G.G.

R. 'Random Red'

Azalea Hybrid

R. calendulaceum X R. periclymenoides

Hybridized By: Towe, L.C. & Anastos, N.

R. 'Ranger'

Azalea Hybrid

R. 'Shishu' X R. 'Hatsu-shimo'

Hybridized By: Morrison, B.Y.

R. 'Rangitoto Blush'

Vireya Hybrid

? X ?

Hybridized By: Oldham, B.E.