Index

R. 'Hille'

Rhododendron Hybrid

R. 'Graf Lennart' X R. irroratum ssp irroratum 'Polka Dot'

Hybridized By: Wieting, J.. Baumschulen, Gisselhorst/Westerstede, Germany, 1984

R. 'Hilo'

Rhododendron Hybrid

R. 'Hotei' X R. 'Brandt'sTropicana'

Hybridized By: Brockenbrough, E.C. Bellevue, Washington, USA

R. himantodes var himantodes

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Malayovireya

R. himantodes var lavandulifolium

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Malayovireya

R. 'Himmelberg'

Rhododendron Hybrid

? X ?

Hybridized By: Reich, W., 1999

R. 'Hina'

Vireya Hybrid

R. zoelleri X R. 'Doctor Hermann Sleumer'

Hybridized By: Mitchell, R.A., 1995

R. 'Hindsight'

Rhododendron Hybrid

R. minus Carolinianum Group 'Epoch' X R. 'Achiever x pemakoense'

Hybridized By: Delp Weldon E.. Harrisville, Pensylvania, USA, 1985

R. 'Hindustan'

Rhododendron Hybrid

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

Hybridized By: Leach, Dr. David G.. North Madison, Ohio, USA, 1967

R. 'Hino-crimson'

Azalea Hybrid

R. 'Amoenum' X R. 'Hinodegiri'

Hybridized By: Vermeulen & Sons, J., 1944

R. 'Hino-red'

Azalea Hybrid

? X ?

Hybridized By: Unknown

R. 'Hino-supreme'

Azalea Hybrid

R. 'Hinodegiri' X ?

Hybridized By: Sawada, K.

R. 'Hino-white'

Azalea Hybrid

? X ?

Hybridized By: Unknown

R. 'Hinodegiri'

Azalea Hybrid

? X ?

Hybridized By: Japan | no hybridiser registration, 1918

R. 'Hinomayo'

Azalea Hybrid

R. 'Obtusum Group' X ?

Hybridized By: Japan | no hybridiser registration, 1910

R. 'Hip Hip Array'

Rhododendron Hybrid

R. catawbiense 'Catalgla' X R. 'Lady De Rothschild'

Hybridized By: Looye, Jack. Niagara on the Lake, Ontario, Canada, 1999

R. hippophaeoides var hippophaeoides

Species

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Lapponica

R. hippophaeoides var hippophaeoides 'Bei-ma-shan'

Rhododendron Species Selection

Selected By: Unknown

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Lapponica

R. hippophaeoides var hippophaeoides 'Blue Silver'

Rhododendron Species Selection

Selected By: Hobbie, Dietrich G. , Westerstede/Linswege , Germany, 1977

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Lapponica

R. hippophaeoides var hippophaeoides 'Haba Shan'

Rhododendron Species Selection

Selected By: Russell, J.P.C. , Fife , Scotland, 1914

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Lapponica

R. hippophaeoides var hippophaeoides 'Inshniach'

Rhododendron Species Selection

Selected By: Unknown

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Lapponica

R. hippophaeoides var hippophaeoides 'Sunningdale'

Rhododendron Species Selection

Selected By: unknown, 1925

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Lapponica

R. hippophaeoides var occidentale

Species

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Lapponica

R. 'Hiraethlyn'

Rhododendron Hybrid

R. haematodes ssp haematodes X R. griffithianum

Hybridized By: Unknown

R. 'Hiraethlyn Group'

Rhododendron Cultivar group

? X ?

Hybridized By: Unknown

R. 'Hiroko'

Azalea Hybrid

? X ?

Hybridized By: Arends, W. | Wuppertal-Ronsdorf | Germany, 1960

R. 'Hirschfeld'

Rhododendron Hybrid

R. fortunei ssp fortunei X ?

Hybridized By: von Martin, V.. Rothenburg/Oberlausitz, Germany, 1944

R. hirsutiformum

Natural Hybrid

R. ferrugineum X R. hirsutum

R. hirsutipetiolatum

Species

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Heliolepida

R. hirsutum

Species

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Rhododendron

R. hirsutum 'Albiflorum Laciniatum'

Rhododendron Species Selection

Selected By: Groebel, 1958

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Rhododendron

R. hirsutum 'Album'

Rhododendron Species Selection

Selected By: Firma C. Esveld, 1984

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Rhododendron

R. hirsutum f angustifolium

Species

R. hirsutum 'Flore Pleno'

Rhododendron Species Selection

Selected By: Firma C. Esveld, 1984

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Rhododendron

R. hirsutum 'Laciniatum'

Rhododendron Species Selection

Selected By: Schröter, 1903

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Rhododendron

R. hirsutum 'Variegatum'

Azalea Species Selection

Selected By: UK, No hybridizer registered, 1984

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Rhododendron

R. hirtipes

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Selensia

R. hirtipes 'Ita'

Rhododendron Species Selection

Selected By: Unknown

Subgenus: Hymenanthes
Section: Pontica
Subsection: Selensia

R. hirtipes 'Peachblow'

Rhododendron Species Selection

Selected By: Unknown

Subgenus: Hymenanthes
Section: Pontica
Subsection: Selensia

R. hirtolepidotum

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. 'Hisako'

Azalea Hybrid

? X ?

Hybridized By: Unknown

R. 'Hitomaru'

Azalea Hybrid

? X ?

Hybridized By: Unknown

R. 'HL-7'

Azalea Hybrid

? X ?

Hybridized By: Aromi, E.J | Mobile, Alabama | USA

R. 'HM-1'

Azalea Hybrid

R. 'Hiawatha' X R. austrinum

Hybridized By: Aromi, E.J | Mobile, Alabama | USA

R. 'Ho-o'

Azalea Hybrid

? X ?

Hybridized By: Unknown

R. 'Ho-oden'

Azalea Hybrid

? X ?

Hybridized By: Japan | no hybridiser registration, 1929

R. 'Hockessin'

Rhododendron Hybrid

R. pubescens X R. keiskei

Hybridized By: Nearing, G.G.. Ramsey, NJ, USA, 1945

R. hodgsonii

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Falconera

R. hodgsonii 'Poet's Lawn'

Rhododendron Species Selection

Selected By: Crown Estate Commissioners , Windsor, Berkshire , England, 1964

Subgenus: Hymenanthes
Section: Pontica
Subsection: Falconera

R. 'hodgsonii x campanulatum'

Rhododendron Hybrid

R. hodgsonii X R. campanulatum ssp campanulatum

Hybridized By: Watson, E.M. Mrs. (Elsie). Kirkland, WA, USA

R. 'Hofgartendirektor Krause'

Azalea Hybrid

? X ?

Hybridized By: Unknown

R. 'Hogetsu'

Azalea Hybrid

? X ?

Hybridized By: Unknown