Stevenson, J.B.

R. 'Amor'

Rhododendron Hybrid

R. griersonianum x R. thayerianum

Hybridized By: Stevenson, J.B.

R. 'Azor'

Rhododendron Hybrid

R. griersonianum x R. fortunei ssp discolor

Hybridized By: Stevenson, J.B.

R. 'Azor Group'

Rhododendron Cultivar group

R. griersonianum x R. fortunei ssp discolor

Hybridized By: Stevenson, J.B.

R. 'Azrie Group'

Rhododendron Cultivar group

R. griersonianum x R. decorum ssp diaprepes

Hybridized By: Stevenson, J.B.

R. 'Beatrice Keir'

Rhododendron Hybrid

R. 'Logan Damaris' x R. lacteum

Hybridized By: Stevenson, J.B.

R. cinnabarinum ssp cinnabarinum 'Nepal'

Rhododendron Species Selection

Selected By: Stevenson, J.B.

R. 'Cote Group'

Deciduous Azalea Hybrid

R. atlanticum x ?

Hybridized By: Stevenson, J.B.

R. decorum ssp diaprepes 'Gargantua'

Rhododendron Species Selection

Selected By: Stevenson, J.B.

R. 'Eira Group'

Evergreen Azalea Hybrid

R. 'Kirishima' x R. 'Malvaticum'

Hybridized By: Stevenson, J.B.

R. 'Fabia Tower Court'

Rhododendron Hybrid

R. dichroanthum ssp dichroanthum x R. griersonianum

Hybridized By: Stevenson, J.B.

R. forrestii ssp forrestii 'Sheinghku'

Rhododendron Species Selection

Selected By: Stevenson, J.B.

R. 'Lactcombei Group'

Rhododendron Cultivar group

R. 'Luscombei Group' x R. lacteum

Hybridized By: Stevenson, J.B.

R. 'Mira Group'

Rhododendron Cultivar group

? x ?

Hybridized By: Stevenson, J.B.

R. 'Ninette Group'

Rhododendron Cultivar group

R. fortunei ssp discolor x R. makinoi

Hybridized By: Stevenson, J.B.

R. 'Omar Group'

Rhododendron Hybrid

R. catacosmum x R. beanianum

Hybridized By: Stevenson, J.B.

R. 'Polar Bear'

Rhododendron Hybrid

R. decorum ssp diaprepes x R. auriculatum

Hybridized By: Stevenson, J.B.

R. racemosum 'Rock Rose'

Rhododendron Species Selection

Selected By: Stevenson, J.B.

R. 'Red Cap Group'

Rhododendron Hybrid

? x ?

Hybridized By: Stevenson, J.B.

R. 'Robert Keir'

Rhododendron Hybrid

R. lacteum x R. 'Luscombei'

Hybridized By: Stevenson, J.B.

R. 'Rocket'

Rhododendron Hybrid

R. meddianum var meddianum x R. strigillosum

Hybridized By: Stevenson, J.B.

R. 'Roza Stevenson'

Rhododendron Hybrid

? x ?

Hybridized By: Stevenson, J.B.

R. 'Rozamarie Group'

Rhododendron Cultivar group

? x ?

Hybridized By: Stevenson, J.B.

R. 'Rozie Group'

Rhododendron Cultivar group

? x ?

Hybridized By: Stevenson, J.B.

R. 'Seingkhu'

Rhododendron Hybrid

? x ?

Hybridized By: Stevenson, J.B.

R. 'Tessa'

Rhododendron Hybrid

R. 'Praecox' x R. moupinense

Hybridized By: Stevenson, J.B.

R. 'Tit-Willow'

Evergreen Azalea Hybrid

R. 'Kirishima' x R. 'Malvaticum'

Hybridized By: Stevenson, J.B.

R. 'Titipu'

Evergreen Azalea Hybrid

? x ?

Hybridized By: Stevenson, J.B.

R. 'Tower Beauty'

Deciduous Azalea Hybrid

R. atlanticum x ?

Hybridized By: Stevenson, J.B.

R. 'Tower Dainty'

Deciduous Azalea Hybrid

R. atlanticum x ?

Hybridized By: Stevenson, J.B.

R. 'Tower Daring'

Deciduous Azalea Hybrid

R. atlanticum x ?

Hybridized By: Stevenson, J.B.

R. 'Tower Demon'

Azalea Hybrid

? x ?

Hybridized By: Stevenson, J.B.

R. 'Tower Dexter'

Deciduous Azalea Hybrid

R. atlanticum x ?

Hybridized By: Stevenson, J.B.

R. 'Tower Dragon'

Deciduous Azalea Hybrid

R. atlanticum x ?

Hybridized By: Stevenson, J.B.

R. trichanthum 'Honey Wood'

Rhododendron Species Selection

Selected By: Stevenson, J.B.

R. 'Zarie Group'

Rhododendron Cultivar group

R. catawbiense x R. meddianum var meddianum

Hybridized By: Stevenson, J.B.

R. 'Zora Group'

Rhododendron Hybrid

R. souliei x R. wardii var puralbum

Hybridized By: Stevenson, J.B.