| 0 | 53116 | 12E0100001 | 'Alena' | Rhododendron decorum Franch. | Czechoslovakia | | 1 | 12E0100001 ** |
| 1 | 53119 | 12E0100004 | 'Bohumil Kavka' | Rhododendron hybr. | Czechoslovakia | | 1 | 12E0100004 ** |
| 2 | 53121 | 12E0100006 | 'Don Juan' | Rhododendron hybr. | Czechoslovakia | | 1 | 12E0100006 ** |
| 3 | 53133 | 12E0100018 | 'Petr' | Rhododendron hybr. | Czechoslovakia | | 1 | 12E0100018 ** |
| 4 | 53138 | 12E0100023 | 'Vilem Heckel' | Rhododendron hybr. | Czechoslovakia | | 1 | 12E0100023 ** |
| 5 | 53140 | 12E0100025 | 'Album Elegans' | Rhododendron catawbiense Michx. | United Kingdom | | 1 | 12E0100025 ** |
| 6 | 53154 | 12E0100039 | 'Cunningham's White' | Rhododendron hybr. | United Kingdom | | 1 | 12E0100039 ** |
| 7 | 53160 | 12E0100045 | 'Fastuosum Flore Pleno' | Rhododendron hybr. | unknown | | 1 | 12E0100045 ** |
| 8 | 53174 | 12E0100059 | 'Kokardia' | Rhododendron hybr. | Germany | | 1 | 12E0100059 ** |
| 9 | 53191 | 12E0100076 | 'Picturatum' | Rhododendron maximum L. | United Kingdom | | 1 | 12E0100076 ** |
| 10 | 53198 | 12E0100083 | 'Admiral Piet Hein' | Rhododendron hybr. | Netherlands | | 1 | 12E0100083 ** |
| 11 | 53223 | 12E0100108 | 'Sweet Simplicity' | Rhododendron ponticum L. | United Kingdom | | 1 | 12E0100108 ** |
| 12 | 53235 | 12E0100120 | 'Direktoer E. Hjelm' | Rhododendron fortunei Lindl. subsp. fortunei | Netherlands | | 1 | 12E0100120 ** |
| 13 | 53248 | 12E0100133 | 'Erika' | Rhododendron brachycarpum D. Don ex G. Don | Germany | | 1 | 12E0100133 ** |
| 14 | 53296 | 12E0100181 | 'Anilin' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 1 | 12E0100181 ** |
| 15 | 53300 | 12E0100185 | 'Hachmann's Belona' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 1 | 12E0100185 ** |
| 16 | 53306 | 12E0100191 | 'Fantastica' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 1 | 12E0100191 ** |
| 17 | 53310 | 12E0100195 | 'Hero' | Rhododendron catawbiense Michx. | Germany | | 1 | 12E0100195 ** |
| 18 | 53311 | 12E0100196 | 'Jacksonii' | Rhododendron caucasicum Pall. | unknown | | 1 | 12E0100196 ** |
| 19 | 53326 | 12E0100211 | 'Oudijk's Sensation' | Rhododendron williamsianum Rehder & E. H. Wilson | Germany | | 1 | 12E0100211 ** |
| 20 | 53344 | 12E0100229 | 'Schneewolke' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 1 | 12E0100229 ** |
| 21 | 53353 | 12E0100238 | 'August Lamken' | Rhododendron williamsianum Rehder & E. H. Wilson | Germany | | 1 | 12E0100238 ** |
| 22 | 53359 | 12E0100244 | 'Hachmann's Evelyn' | Rhododendron hybr. | Germany | | 1 | 12E0100244 ** |
| 23 | 53368 | 12E0100253 | 'Julischka' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 1 | 12E0100253 ** |
| 24 | 53374 | 12E0100259 | 'Hachmann's Polaris' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 1 | 12E0100259 ** |
| 25 | 53403 | 12E0100288 | 'Pink Delight' | Rhododendron hybr. | United Kingdom | | 1 | 12E0100288 ** |
| 26 | 53405 | 12E0100290 | 'Prinses Marijke' | Rhododendron hybr. | Netherlands | | 1 | 12E0100290 ** |
| 27 | 53449 | 12E0100334 | 'Ariane' | Rhododendron insigne Hemsl. & E. H. Wilson | Germany | | 1 | 12E0100334 ** |
| 28 | 53457 | 12E0100342 | 'Erato' | Rhododendron hybr. | Germany | | 1 | 12E0100342 ** |
| 29 | 53467 | 12E0100352 | 'Astrid' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 1 | 12E0100352 ** |
| 30 | 53477 | 12E0100362 | 'Morgenrot' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 1 | 12E0100362 ** |
| 31 | 53481 | 12E0100366 | 'Eggert Rohwer' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 1 | 12E0100366 ** |
| 32 | 53490 | 12E0100375 | 'Otto Hahn' | Rhododendron hybr. | Germany | | 1 | 12E0100375 ** |
| 33 | 53502 | 12E0100387 | 'Berlin' | Rhododendron williamsianum Rehder & E. H. Wilson | Germany | | 1 | 12E0100387 ** |
| 34 | 53536 | 12E0100421 | 'Hachmann's Juanita' | Rhododendron hybr. | Germany | | 1 | 12E0100421 ** |
| 35 | 53538 | 12E0100423 | 'Janet Blair' | Rhododendron hybr. | United States | | 1 | 12E0100423 ** |
| 36 | 53549 | 12E0100434 | 'J. Jennings' | Rhododendron hybr. | United Kingdom | | 1 | 12E0100434 ** |
| 37 | 53550 | 12E0100435 | 'Silber' | Rhododendron makinoi Tagg ex Nakai | Germany | | 1 | 12E0100435 ** |
| 38 | 53552 | 12E0100437 | 'Mrs John Penn' | Rhododendron hybr. | United Kingdom | | 1 | 12E0100437 ** |
| 39 | 53568 | 12E0100453 | 'Hachmann's Rosenelfe' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 1 | 12E0100453 ** |
| 40 | 53571 | 12E0100456 | 'Schneespiegel' | Rhododendron hybr. | Germany | | 1 | 12E0100456 ** |
| 41 | 53602 | 12E0100487 | 'Hachmann's Harlekin' | Rhododendron hybr. | Germany | | 1 | 12E0100487 ** |
| 42 | 53680 | 12E0100566 | 'Charles Bagley' | Rhododendron catawbiense Michx. | United Kingdom | | 1 | 12E0100566 ** |
| 43 | 53687 | 12E0100606 | 'Morava' | Rhododendron obtusum (Lindl.) Planch. | Czechoslovakia | | 1 | 12E0100606 ** |
| 44 | 53699 | 12E0100803 | 'Reve d'Amour' | Rhododendron viscosum (L.) Torr. | Netherlands | | 1 | 12E0100803 ** |
| 45 | 53727 | 12E0100831 | 'Goeteborg' | Rhododendron smirnowii Trautv. | Sweden | | 1 | 12E0100831 ** |
| 46 | 53738 | 12E0100842 | 'Lenora' | Rhododendron ferrugineum L. | Czech Republic | | 1 | 12E0100842 ** |
| 47 | 53744 | 12E0100848 | 'Bakkarat' | Rhododendron hybr. | Germany | | 1 | 12E0100848 ** |
| 48 | 53752 | 12E0100856 | 'Krivoklat' | Rhododendron hybr. | Czech Republic | | 1 | 12E0100856 ** |
| 49 | 53757 | 12E0100861 | 'Karlstejn' | Rhododendron hybr. | Czech Republic | | 1 | 12E0100861 ** |
| 50 | 53766 | 12E0100870 | 'Christian' | Rhododendron catawbiense Michx. | Germany | | 1 | 12E0100870 ** |
| 51 | 53775 | 12E0100879 | 'Krakovec' | Rhododendron hybr. | Czech Republic | | 1 | 12E0100879 ** |