| 0 | 53116 | 12E0100001 | 'Alena' | Rhododendron decorum Franch. | Czechoslovakia | | 3 | 12E0100001 ** |
| 1 | 53126 | 12E0100011 | 'Lunik' | Rhododendron smirnowii Trautv. | Czechoslovakia | | 3 | 12E0100011 ** |
| 2 | 53140 | 12E0100025 | 'Album Elegans' | Rhododendron catawbiense Michx. | United Kingdom | | 3 | 12E0100025 ** |
| 3 | 53141 | 12E0100026 | 'Album Grandiflorum' | Rhododendron catawbiense Michx. | United Kingdom | | 3 | 12E0100026 ** |
| 4 | 53142 | 12E0100027 | 'Album Novum' | Rhododendron catawbiense Michx. | Belgium | | 3 | 12E0100027 ** |
| 5 | 53143 | 12E0100028 | 'America' | Rhododendron hybr. | Netherlands | | 3 | 12E0100028 ** |
| 6 | 53147 | 12E0100032 | 'Blue Danube' | Rhododendron fortunei Lindl. subsp. discolor (Franch.) D. F. Chamb. | United Kingdom | | 3 | 12E0100032 ** |
| 7 | 53148 | 12E0100033 | Blue Peter | Rhododendron hybr. | United Kingdom | | 3 | 12E0100033 ** |
| 8 | 53149 | 12E0100034 | 'Boule de Neige' | Rhododendron hybr. | France | | 3 | 12E0100034 ** |
| 9 | 53151 | 12E0100036 | 'Catawbiense Album' | Rhododendron catawbiense Michx. | United Kingdom | | 3 | 12E0100036 ** |
| 10 | 53152 | 12E0100037 | 'Catawbiense Boursault' | Rhododendron catawbiense Michx. | United Kingdom | | 3 | 12E0100037 ** |
| 11 | 53153 | 12E0100038 | 'Catawbiense Grandiflorum' | Rhododendron catawbiense Michx. | United Kingdom | | 3 | 12E0100038 ** |
| 12 | 53154 | 12E0100039 | 'Cunningham's White' | Rhododendron hybr. | United Kingdom | | 3 | 12E0100039 ** |
| 13 | 53161 | 12E0100046 | 'Furnivall's Daughter' | Rhododendron hybr. | United Kingdom | | 3 | 12E0100046 ** |
| 14 | 53168 | 12E0100053 | 'Herme' | Rhododendron hybr. | Germany | | 3 | 12E0100053 ** |
| 15 | 53177 | 12E0100062 | 'Abendrot' | Rhododendron forrestii Balf. f. ex Diels subsp. forrestii | Germany | | 3 | 12E0100062 ** |
| 16 | 53179 | 12E0100064 | 'Lavender Girl' | Rhododendron fortunei Lindl. subsp. fortunei | United Kingdom | | 3 | 12E0100064 ** |
| 17 | 53182 | 12E0100067 | 'Madame Masson' | Rhododendron hybr. | France | | 3 | 12E0100067 ** |
| 18 | 53183 | 12E0100068 | 'Marchioness of Landsdowne' | Rhododendron maximum L. | United Kingdom | | 3 | 12E0100068 ** |
| 19 | 53184 | 12E0100069 | 'Margot' | Rhododendron catawbiense Michx. | Germany | | 3 | 12E0100069 ** |
| 20 | 53198 | 12E0100083 | 'Admiral Piet Hein' | Rhododendron hybr. | Netherlands | | 3 | 12E0100083 ** |
| 21 | 53214 | 12E0100099 | 'Baden Baden' | Rhododendron forrestii Balf. f. ex Diels subsp. forrestii | Germany | | 3 | 12E0100099 ** |
| 22 | 53231 | 12E0100116 | 'Delta' | Rhododendron hybr. | Germany | | 3 | 12E0100116 ** |
| 23 | 53238 | 12E0100123 | 'Doktor h. c. Alexander Steffen' | Rhododendron hybr. | unknown | | 3 | 12E0100123 ** |
| 24 | 53262 | 12E0100147 | 'Giganteum' | Rhododendron catawbiense Michx. | United Kingdom | | 3 | 12E0100147 ** |
| 25 | 53269 | 12E0100154 | 'H. Halven' | Rhododendron hybr. | unknown | | 3 | 12E0100154 ** |
| 26 | 53288 | 12E0100173 | 'Lady Decies' | Rhododendron hybr. | United Kingdom | | 3 | 12E0100173 ** |
| 27 | 53295 | 12E0100180 | 'Marie Fortie' | Rhododendron hybr. | Belgium | | 3 | 12E0100180 ** |
| 28 | 53310 | 12E0100195 | 'Hero' | Rhododendron catawbiense Michx. | Germany | | 3 | 12E0100195 ** |
| 29 | 53314 | 12E0100199 | 'Breslau' | Rhododendron wardii W. W. Sm. | Germany | | 3 | 12E0100199 ** |
| 30 | 53316 | 12E0100201 | 'Leopardii' | Rhododendron arboreum Sm. | United Kingdom | | 3 | 12E0100201 ** |
| 31 | 53324 | 12E0100209 | 'Von Oheimb - Woislowitz' | Rhododendron catawbiense Michx. | Germany | | 3 | 12E0100209 ** |
| 32 | 53338 | 12E0100223 | 'Roseum Elegans' | Rhododendron catawbiense Michx. | United Kingdom | | 3 | 12E0100223 ** |
| 33 | 53339 | 12E0100224 | 'Roseum Superbum' | Rhododendron catawbiense Michx. | United Kingdom | | 3 | 12E0100224 ** |
| 34 | 53355 | 12E0100240 | 'Hachmann's Brasilia' | Rhododendron wardii W. W. Sm. | Germany | | 3 | 12E0100240 ** |
| 35 | 53357 | 12E0100242 | 'Elisabeth Hobbie' | Rhododendron forrestii Balf. f. ex Diels subsp. forrestii | Germany | | 3 | 12E0100242 ** |
| 36 | 53366 | 12E0100251 | 'Herzas' | Rhododendron wardii W. W. Sm. | Germany | | 3 | 12E0100251 ** |
| 37 | 53398 | 12E0100283 | 'Ammerland' | Rhododendron hybr. | Germany | | 3 | 12E0100283 ** |
| 38 | 53402 | 12E0100287 | 'Kluis Sensation' | Rhododendron griffithianum Wight | Netherlands | | 3 | 12E0100287 ** |
| 39 | 53412 | 12E0100297 | 'Caucasicum Pictum' | Rhododendron caucasicum Pall. | United Kingdom | | 3 | 12E0100297 ** |
| 40 | 53433 | 12E0100318 | 'Hurricane' | Rhododendron hybr. | United States | | 3 | 12E0100318 ** |
| 41 | 53438 | 12E0100323 | 'Bruns Schneewittchen' | Rhododendron insigne Hemsl. & E. H. Wilson | Germany | | 3 | 12E0100323 ** |
| 42 | 53441 | 12E0100326 | 'Marimba' | Rhododendron brachycarpum D. Don ex G. Don | Germany | | 3 | 12E0100326 ** |
| 43 | 53444 | 12E0100329 | 'Doktor Ernst Schaele' | Rhododendron forrestii Balf. f. ex Diels subsp. forrestii | Germany | | 3 | 12E0100329 ** |
| 44 | 53506 | 12E0100391 | 'Blue Tit Magor' | Rhododendron impeditum Balf. f. & W. W. Sm. | United Kingdom | | 3 | 12E0100391 ** |
| 45 | 53507 | 12E0100392 | 'Bluebird' | Rhododendron hybr. | United Kingdom | | 3 | 12E0100392 ** |
| 46 | 53509 | 12E0100394 | 'H. W. Sargent' | Rhododendron catawbiense Michx. | United Kingdom | | 3 | 12E0100394 ** |
| 47 | 53552 | 12E0100437 | 'Mrs John Penn' | Rhododendron hybr. | United Kingdom | | 3 | 12E0100437 ** |
| 48 | 53586 | 12E0100471 | 'Ballerina' | Rhododendron hybr. | United Kingdom | | 3 | 12E0100471 ** |
| 49 | 53625 | 12E0100510 | 'Corneille' | Rhododendron hybr. | unknown | | 3 | 12E0100510 ** |
| 50 | 53627 | 12E0100512 | 'Diamant Purpur' | Rhododendron kiusianum Makino | Germany | | 3 | 12E0100512 ** |
| 51 | 53635 | 12E0100520 | 'Lilienstein' | Rhododendron kiusianum Makino | *German Democratic Republic | | 3 | 12E0100520 ** |
| 52 | 53636 | 12E0100521 | 'Rauschenstein' | Rhododendron kiusianum Makino | *German Democratic Republic | | 3 | 12E0100521 ** |
| 53 | 53637 | 12E0100522 | 'Schrammstein' | Rhododendron kiusianum Makino | unknown | | 3 | 12E0100522 ** |
| 54 | 53638 | 12E0100523 | 'Wildenstein' | Rhododendron kiusianum Makino | unknown | | 3 | 12E0100523 ** |
| 55 | 53644 | 12E0100530 | 'Florida' | Rhododendron hybr. | unknown | | 3 | 12E0100530 ** |
| 56 | 53645 | 12E0100531 | 'Satschiko' | Rhododendron hybr. | Germany | | 3 | 12E0100531 ** |
| 57 | 53650 | 12E0100536 | 'Gloria Mundi' | Rhododendron hybr. | unknown | | 3 | 12E0100536 ** |
| 58 | 53664 | 12E0100550 | 'Bozena Nemcova' | Rhododendron yedoense Maxim. var. poukhanense (H. Lév.) Nakai | Czech Republic | | 3 | 12E0100550 ** |
| 59 | 53699 | 12E0100803 | 'Reve d'Amour' | Rhododendron viscosum (L.) Torr. | Netherlands | | 3 | 12E0100803 ** |
| 60 | 53704 | 12E0100808 | 'Nippon' | Rhododendron wardii W. W. Sm. | Germany | | 3 | 12E0100808 ** |
| 61 | 53734 | 12E0100838 | 'Cervena Lhota' | Rhododendron obtusum (Lindl.) Planch. | Czech Republic | | 3 | 12E0100838 ** |
| 62 | 53739 | 12E0100843 | 'Loket' | Rhododendron strigillosum Franch. | Czech Republic | | 3 | 12E0100843 ** |
| 63 | 53743 | 12E0100847 | 'Velka Morava' | Rhododendron obtusum (Lindl.) Planch. | Czech Republic | | 3 | 12E0100847 ** |
| 64 | 53749 | 12E0100853 | 'Pruhonice' | Rhododendron obtusum (Lindl.) Planch. | Czech Republic | | 3 | 12E0100853 ** |
| 65 | 53753 | 12E0100857 | 'Orlik' | Rhododendron hybr. | Czech Republic | | 3 | 12E0100857 ** |
| 66 | 53756 | 12E0100860 | 'Hluboka' | Rhododendron obtusum (Lindl.) Planch. | Czech Republic | | 3 | 12E0100860 ** |
| 67 | 53760 | 12E0100864 | 'Kacina' | Rhododendron obtusum (Lindl.) Planch. | Czech Republic | | 3 | 12E0100864 ** |
| 68 | 53761 | 12E0100865 | 'Kromeriz' | Rhododendron kiusianum Makino | Czech Republic | | 3 | 12E0100865 ** |
| 69 | 53764 | 12E0100868 | 'Golden Eagle' | Rhododendron hybr. | United Kingdom | | 3 | 12E0100868 ** |
| 70 | 53771 | 12E0100875 | 'Opocno' | Rhododendron obtusum (Lindl.) Planch. | Czech Republic | | 3 | 12E0100875 ** |
| 71 | 53775 | 12E0100879 | 'Krakovec' | Rhododendron hybr. | Czech Republic | | 3 | 12E0100879 ** |
| 72 | 65825 | 12E0100885 | 'Zvikov' | Rhododendron hybr. | Czech Republic | | 3 | 12E0100885 ** |
| 73 | 65846 | 12E0100888 | 'Snezka' | Rhododendron obtusum (Lindl.) Planch. | Czech Republic | | 3 | 12E0100888 ** |
| 74 | 65863 | 12E0100891 | 'Mrs Philip Martineau' | Rhododendron hybr. | England, United Kingdom | | 3 | 12E0100891 ** |