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R. 'Bad Zwischenahn'

() X (R. williamsianum )

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R. 'Earlybird' Rhododendron Hybrid R. williamsianum X R. oreodoxa var fargesii Hybridized By: Henny, Rudolph More information
R. 'Ed Hillary' Rhododendron Hybrid R. williamsianum X R. grande Hybridized By: Campbell, B.W. More information
R. 'Arab' Rhododendron Hybrid R. williamsianum X R. sperabile var sperabile Hybridized By: Rothschild, L. de More information
R. 'Maureen' Rhododendron Hybrid R. williamsianum X R. 'Lem's Goal' Hybridized By: Lem Halfdan More information and pictures
R. 'White Pippin' Rhododendron Hybrid R. williamsianum X R. 'Olympic Lady Group' Hybridized By: Larson, H.L. More information and pictures
R. 'Whisperingrose' Rhododendron Hybrid R. williamsianum X R. 'Elizabeth Group' Hybridized By: Greer, Harold E. More information
R. 'Dainty Jean' Rhododendron Hybrid R. williamsianum X R. 'Helene Schiffner' Hybridized By: The Bovees Nursery More information
R. 'Ruth Tracy' Rhododendron Hybrid R. williamsianum X R. 'Vera Elliott' Hybridized By: Elliott, W. More information
R. 'Easter Bells' Rhododendron Hybrid R. williamsianum X R. 'China Group' Hybridized By: Lancaster, Ben, F. More information
R. 'Nosutchianum' Rhododendron Hybrid R. williamsianum X ? Hybridized By: Lem Halfdan More information and pictures
R. 'Albert de Mezey' Rhododendron Hybrid R. williamsianum X ? Hybridized By: Vaartnou, H. More information
R. 'Arthur J. Ivens' Rhododendron Hybrid R. williamsianum X R. fortunei ssp discolor Hybridized By: Ivens More information and pictures
R. 'Görlitz' Rhododendron Hybrid R. williamsianum X R. 'Rinaldo' Hybridized By: von Martin, V. More information
R. 'Colina' Rhododendron Hybrid R. williamsianum X R. Sir Charles Lemon Hybridized By: Goheen. Dr. David More information
R. 'Grayswood Pink' Rhododendron Hybrid R. williamsianum X R. venator Hybridized By: Dowry, G. H. More information
R. 'James Barto' Rhododendron Hybrid R. williamsianum X R. orbiculare ssp orbiculare Hybridized By: Barto, James More information and pictures
R. 'Jock' Rhododendron Hybrid R. williamsianum X R. griersonianum Hybridized By: Stirling-Maxwell, Sir John More information and pictures
R. 'Cowslip' Rhododendron Hybrid R. williamsianum X R. wardii var wardii Hybridized By: Aberconway, Lord More information and pictures
R. 'Moerheim's Pink' Rhododendron Hybrid R. williamsianum X R. 'Genoveva' Hybridized By: Hobbie, Dietrich G. More information
R. 'Osmar' Rhododendron Hybrid R. williamsianum X ? Hybridized By: UK, No hybridizer registered More information and pictures
R. 'Kimberly' Rhododendron Hybrid R. williamsianum X R. fortunei ssp fortunei Hybridized By: Greer, Harold E. More information and pictures
R. 'Mission Bells' Rhododendron Hybrid R. williamsianum X R. orbiculare ssp orbiculare Hybridized By: Lancaster, Ben, F. More information and pictures
R. 'Adrastia Group' Rhododendron Cultivar group R. williamsianum X R. neriiflorum ssp neriiflorum Hybridized By: Aberconway, Lord More information and pictures
R. 'Brickdust' Rhododendron Hybrid R. williamsianum X R. 'Dido Group' Hybridized By: Henny, Rudolph More information and pictures
R. 'Honingen' Rhododendron Hybrid R. williamsianum X R. oreodoxa var oreodoxa Hybridized By: Hobbie, Dietrich G. More information
R. 'Mary de Mezey' Rhododendron Hybrid R. williamsianum X R. wardii var wardii Hybridized By: Mezey de, A. More information
R. 'Stadt Essen' Rhododendron Hybrid R. 'Louis Pasteur' X R. williamsianum Hybridized By: Hobbie, Dietrich G. More information and pictures
R. 'Tick-tock' Rhododendron Hybrid R. 'The Honourable Jean Marie de Montague' X R. williamsianum Hybridized By: Greer, Harold E. More information
R. 'Vater Böhlje' Rhododendron Hybrid R. catawbiense X R. williamsianum Hybridized By: Hobbie, Dietrich G. More information and pictures
R. 'Adriaan Koster x williamsianum' Rhododendron Hybrid R. 'Adriaan Koster' X R. williamsianum More information
R. 'Elfenbein' Rhododendron Hybrid R. 'Adriaan Koster' X R. williamsianum Hybridized By: Hobbie, Dietrich G. More information and pictures
R. 'Wega Group' Rhododendron Cultivar group R. fortunei ssp fortunei 'Sir Charles Butler' X R. williamsianum Hybridized By: Hobbie, Dietrich G. More information
R. 'Tibet' Rhododendron Hybrid R. 'Bismarck' X R. williamsianum Hybridized By: Hobbie, Dietrich G. More information and pictures
R. 'Stockholm' Rhododendron Hybrid ? X R. williamsianum Hybridized By: Hobbie, Dietrich G. More information
R. 'Veryan Bay' Rhododendron Hybrid R. pseudochrysanthum X R. williamsianum Hybridized By: Williams, John Charles More information
R. 'Erich Beeken' Rhododendron Hybrid R. 'Britannia' X R. williamsianum Hybridized By: Hobbie, Dietrich G. More information and pictures
R. 'Ladrillo' Rhododendron Hybrid R. 'Moonstone Group' X R. williamsianum Hybridized By: Henny, John More information
R. 'Temple Belle Group' Rhododendron Cultivar group R. orbiculare ssp orbiculare X R. williamsianum Hybridized By: Kew More information and pictures
R. 'campylocarpum x williamsianum' Rhododendron Hybrid R. campylocarpum ssp campylocarpum X R. williamsianum More information
R. 'Willbrit' Rhododendron Hybrid R. 'Britannia' X R. williamsianum Hybridized By: Hobbie, Dietrich G. More information and pictures
R. 'Gartendirektor Glocker' Rhododendron Hybrid R. 'Doncaster' X R. williamsianum Hybridized By: Hobbie, Dietrich G. More information and pictures
R. 'Oldenburg Group' Rhododendron Cultivar group R. fortunei ssp discolor X R. williamsianum Hybridized By: Hobbie, Dietrich G. More information
R. 'Gartendirektor Rieger' Rhododendron Hybrid R. 'Adriaan Koster' X R. williamsianum Hybridized By: Hobbie, Dietrich G. More information and pictures
R. 'April Glow' Rhododendron Hybrid R. 'Wilgen's Ruby' X R. williamsianum Hybridized By: van Wilgen More information and pictures
R. 'Pallidum Group' Rhododendron Cultivar group R. griffithianum X R. williamsianum Hybridized By: Aberconway, Lord More information
R. 'August Lamken' Rhododendron Hybrid R. 'Doctor V.H. Rutgers' X R. williamsianum Hybridized By: Hobbie, Dietrich G. More information and pictures
R. 'Loderi White Diamond x williamsianum' Rhododendron Hybrid R. 'Loderi White Diamond' X R. williamsianum More information
R. 'Alexander Steffen' Rhododendron Hybrid R. 'Britannia' X R. williamsianum Hybridized By: Hobbie, Dietrich G. More information
R. 'Vinewood' Rhododendron Hybrid R. 'Sham's Ruby' X R. williamsianum Hybridized By: Forster, R.R. More information and pictures
R. 'Bow Bells' Rhododendron Hybrid R. 'Corona' X R. williamsianum Hybridized By: Rothschild, L. de More information and pictures

	Require Seed X Pollen in the Same Positions
	Require R. williamsianum

Sibling Search

R. 'Bad Zwischenahn'

() X (R. williamsianum )

Next Page

R. 'Earlybird'

Rhododendron Hybrid

R. williamsianum X R. oreodoxa var fargesii

R. 'Ed Hillary'

Rhododendron Hybrid

R. williamsianum X R. grande

R. 'Arab'

Rhododendron Hybrid

R. williamsianum X R. sperabile var sperabile

R. 'Maureen'

Rhododendron Hybrid

R. williamsianum X R. 'Lem's Goal'

R. 'White Pippin'

Rhododendron Hybrid

R. williamsianum X R. 'Olympic Lady Group'

R. 'Whisperingrose'

Rhododendron Hybrid

R. williamsianum X R. 'Elizabeth Group'

R. 'Dainty Jean'

Rhododendron Hybrid

R. williamsianum X R. 'Helene Schiffner'

R. 'Ruth Tracy'

Rhododendron Hybrid

R. williamsianum X R. 'Vera Elliott'

R. 'Easter Bells'

Rhododendron Hybrid

R. williamsianum X R. 'China Group'

R. 'Nosutchianum'

Rhododendron Hybrid

R. williamsianum X ?

R. 'Albert de Mezey'

Rhododendron Hybrid

R. williamsianum X ?

R. 'Arthur J. Ivens'

Rhododendron Hybrid

R. williamsianum X R. fortunei ssp discolor

R. 'Görlitz'

Rhododendron Hybrid

R. williamsianum X R. 'Rinaldo'

R. 'Colina'

Rhododendron Hybrid

R. williamsianum X R. Sir Charles Lemon

R. 'Grayswood Pink'

Rhododendron Hybrid

R. williamsianum X R. venator

R. 'James Barto'

Rhododendron Hybrid

R. williamsianum X R. orbiculare ssp orbiculare

R. 'Jock'

Rhododendron Hybrid

R. williamsianum X R. griersonianum

R. 'Cowslip'

Rhododendron Hybrid

R. williamsianum X R. wardii var wardii

R. 'Moerheim's Pink'

Rhododendron Hybrid

R. williamsianum X R. 'Genoveva'

R. 'Osmar'

Rhododendron Hybrid

R. williamsianum X ?

R. 'Kimberly'

Rhododendron Hybrid

R. williamsianum X R. fortunei ssp fortunei

R. 'Mission Bells'

Rhododendron Hybrid

R. williamsianum X R. orbiculare ssp orbiculare

R. 'Adrastia Group'

Rhododendron Cultivar group

R. williamsianum X R. neriiflorum ssp neriiflorum

R. 'Brickdust'

Rhododendron Hybrid

R. williamsianum X R. 'Dido Group'

R. 'Honingen'

Rhododendron Hybrid

R. williamsianum X R. oreodoxa var oreodoxa

R. 'Mary de Mezey'