| 0 | 53122 | 12E0100007 | 'Eva' | Rhododendron hybr. | Czechoslovakia | | 4 | 12E0100007 ** |
| 1 | 53134 | 12E0100019 | 'Profesor Jelinek' | Rhododendron smirnowii Trautv. | Czechoslovakia | | 4 | 12E0100019 ** |
| 2 | 53144 | 12E0100029 | 'Arthur Bedford' | Rhododendron ponticum L. | United Kingdom | | 4 | 12E0100029 ** |
| 3 | 53147 | 12E0100032 | 'Blue Danube' | Rhododendron fortunei Lindl. subsp. discolor (Franch.) D. F. Chamb. | United Kingdom | | 4 | 12E0100032 ** |
| 4 | 53151 | 12E0100036 | 'Catawbiense Album' | Rhododendron catawbiense Michx. | United Kingdom | | 4 | 12E0100036 ** |
| 5 | 53152 | 12E0100037 | 'Catawbiense Boursault' | Rhododendron catawbiense Michx. | United Kingdom | | 4 | 12E0100037 ** |
| 6 | 53153 | 12E0100038 | 'Catawbiense Grandiflorum' | Rhododendron catawbiense Michx. | United Kingdom | | 4 | 12E0100038 ** |
| 7 | 53180 | 12E0100065 | 'Lee's Dark Purple' | Rhododendron catawbiense Michx. | unknown | | 4 | 12E0100065 ** |
| 8 | 53185 | 12E0100070 | 'Markgraf' | Rhododendron catawbiense Michx. | Germany | | 4 | 12E0100070 ** |
| 9 | 53191 | 12E0100076 | 'Picturatum' | Rhododendron maximum L. | United Kingdom | | 4 | 12E0100076 ** |
| 10 | 53247 | 12E0100132 | 'Erich' | Rhododendron hybr. | Germany | | 4 | 12E0100132 ** |
| 11 | 53267 | 12E0100152 | 'Goldsworth Yellow' | Rhododendron hybr. | United Kingdom | | 4 | 12E0100152 ** |
| 12 | 53283 | 12E0100168 | 'May Firth' | Rhododendron hybr. | unknown | | 4 | 12E0100168 ** |
| 13 | 53284 | 12E0100169 | 'Ponticum Roseum' | Rhododendron hybr. | United States | | 4 | 12E0100169 ** |
| 14 | 53295 | 12E0100180 | 'Marie Fortie' | Rhododendron hybr. | Belgium | | 4 | 12E0100180 ** |
| 15 | 53307 | 12E0100192 | 'Frau Martha Lentschke' | Rhododendron hybr. | Germany | | 4 | 12E0100192 ** |
| 16 | 53323 | 12E0100208 | 'Nova Zembla' | Rhododendron catawbiense Michx. | Netherlands | | 4 | 12E0100208 ** |
| 17 | 53324 | 12E0100209 | 'Von Oheimb - Woislowitz' | Rhododendron catawbiense Michx. | Germany | | 4 | 12E0100209 ** |
| 18 | 53338 | 12E0100223 | 'Roseum Elegans' | Rhododendron catawbiense Michx. | United Kingdom | | 4 | 12E0100223 ** |
| 19 | 53339 | 12E0100224 | 'Roseum Superbum' | Rhododendron catawbiense Michx. | United Kingdom | | 4 | 12E0100224 ** |
| 20 | 53362 | 12E0100247 | 'Goldrausch' | Rhododendron wardii W. W. Sm. | Germany | | 4 | 12E0100247 ** |
| 21 | 53366 | 12E0100251 | 'Herzas' | Rhododendron wardii W. W. Sm. | Germany | | 4 | 12E0100251 ** |
| 22 | 53372 | 12E0100257 | 'Vitalio' | Rhododendron fortunei Lindl. subsp. discolor (Franch.) D. F. Chamb. | Germany | | 4 | 12E0100257 ** |
| 23 | 53405 | 12E0100290 | 'Prinses Marijke' | Rhododendron hybr. | Netherlands | | 4 | 12E0100290 ** |
| 24 | 53410 | 12E0100295 | 'Alfred' | Rhododendron hybr. | Germany | | 4 | 12E0100295 ** |
| 25 | 53426 | 12E0100311 | 'Rothenburg' | Rhododendron williamsianum Rehder & E. H. Wilson | Germany | | 4 | 12E0100311 ** |
| 26 | 53433 | 12E0100318 | 'Hurricane' | Rhododendron hybr. | United States | | 4 | 12E0100318 ** |
| 27 | 53436 | 12E0100321 | 'Priska' | Rhododendron hybr. | Germany | | 4 | 12E0100321 ** |
| 28 | 53482 | 12E0100367 | 'Festivo' | Rhododendron wardii W. W. Sm. | Germany | | 4 | 12E0100367 ** |
| 29 | 53493 | 12E0100378 | 'Claudine' | Rhododendron hybr. | Germany | | 4 | 12E0100378 ** |
| 30 | 53499 | 12E0100384 | 'Arthur Stevens' | Rhododendron hybr. | United Kingdom | | 4 | 12E0100384 ** |
| 31 | 53525 | 12E0100410 | 'General D. Eisenhower' | Rhododendron griffithianum Wight | Netherlands | | 4 | 12E0100410 ** |
| 32 | 53536 | 12E0100421 | 'Hachmann's Juanita' | Rhododendron hybr. | Germany | | 4 | 12E0100421 ** |
| 33 | 53542 | 12E0100427 | 'Kings Ride' | Rhododendron hybr. | United Kingdom | | 4 | 12E0100427 ** |
| 34 | 53573 | 12E0100458 | 'Silver Lady' | Rhododendron hybr. | Germany | | 4 | 12E0100458 ** |
| 35 | 53580 | 12E0100465 | 'Torero' | Rhododendron hybr. | Germany | | 4 | 12E0100465 ** |
| 36 | 53581 | 12E0100466 | 'Kalamaika' | Rhododendron hybr. | Germany | | 4 | 12E0100466 ** |
| 37 | 53614 | 12E0100499 | 'Spaetlese' | Rhododendron hybr. | unknown | | 4 | 12E0100499 ** |
| 38 | 53676 | 12E0100562 | 'Ramapo' | Rhododendron minus Michx. var. minus | unknown | | 4 | 12E0100562 ** |
| 39 | 53682 | 12E0100601 | 'Blanice' | Rhododendron obtusum (Lindl.) Planch. | Czechoslovakia | | 4 | 12E0100601 ** |
| 40 | 53683 | 12E0100602 | 'Boubin' | Rhododendron obtusum (Lindl.) Planch. | Czechoslovakia | | 4 | 12E0100602 ** |
| 41 | 53684 | 12E0100603 | 'Doubrava' | Rhododendron obtusum (Lindl.) Planch. | Czechoslovakia | | 4 | 12E0100603 ** |
| 42 | 53687 | 12E0100606 | 'Morava' | Rhododendron obtusum (Lindl.) Planch. | Czechoslovakia | | 4 | 12E0100606 ** |
| 43 | 53693 | 12E0100612 | 'Ledikanense' | Rhododendron yedoense Maxim. var. poukhanense (H. Lév.) Nakai | Czechoslovakia | | 4 | 12E0100612 ** |
| 44 | 53695 | 12E0100702 | 'Largo' | Rhododendron forrestii Balf. f. ex Diels | Czechoslovakia | | 4 | 12E0100702 ** |
| 45 | 53697 | 12E0100801 | 'Sychrov' | Rhododendron impeditum Balf. f. & W. W. Sm. | Czechoslovakia | | 4 | 12E0100801 ** |
| 46 | 53699 | 12E0100803 | 'Reve d'Amour' | Rhododendron viscosum (L.) Torr. | Netherlands | | 4 | 12E0100803 ** |
| 47 | 53715 | 12E0100819 | 'Viscy' | Rhododendron hybr. | Germany | | 4 | 12E0100819 ** |
| 48 | 53725 | 12E0100829 | 'Holstein' | Rhododendron catawbiense Michx. | Germany | | 4 | 12E0100829 ** |
| 49 | 53741 | 12E0100845 | 'Profesor Scholz' | Rhododendron dichroanthum Diels subsp. scyphocalyx (Balf. f. & Forrest) Cowan | Czech Republic | | 4 | 12E0100845 ** |
| 50 | 53753 | 12E0100857 | 'Orlik' | Rhododendron hybr. | Czech Republic | | 4 | 12E0100857 ** |
| 51 | 65857 | 12E0100890 | 'Kriemhild' | Rhododendron wardii W. W. Sm. | Germany | | 4 | 12E0100890 ** |