| 0 | 53120 | 12E0100005 | 'Dagmar' | Rhododendron decorum Franch. | Czechoslovakia | | 3 | 12E0100005 ** |
| 1 | 53131 | 12E0100016 | 'Motyl' | Rhododendron decorum Franch. | Czechoslovakia | | 3 | 12E0100016 ** |
| 2 | 53139 | 12E0100024 | 'Arnost Silva Tarouca' | Rhododendron decorum Franch. | Czechoslovakia | | 3 | 12E0100024 ** |
| 3 | 53167 | 12E0100052 | 'Gudrun' | Rhododendron hybr. | Germany | | 3 | 12E0100052 ** |
| 4 | 53198 | 12E0100083 | 'Admiral Piet Hein' | Rhododendron hybr. | Netherlands | | 3 | 12E0100083 ** |
| 5 | 53379 | 12E0100264 | 'Hachmann's Ornament' | Rhododendron hybr. | Germany | | 3 | 12E0100264 ** |
| 6 | 53390 | 12E0100275 | 'Seestadt Bremerhaven' | Rhododendron insigne Hemsl. & E. H. Wilson | Germany | | 3 | 12E0100275 ** |
| 7 | 53397 | 12E0100282 | 'Admiral Vanessa' | Rhododendron fortunei Lindl. subsp. discolor (Franch.) D. F. Chamb. | Germany | | 3 | 12E0100282 ** |
| 8 | 53422 | 12E0100307 | 'Scintillation' | Rhododendron fortunei Lindl. subsp. fortunei | United States | | 3 | 12E0100307 ** |
| 9 | 53429 | 12E0100314 | 'Persil' | Rhododendron hybr. | United Kingdom | | 3 | 12E0100314 ** |
| 10 | 53449 | 12E0100334 | 'Ariane' | Rhododendron insigne Hemsl. & E. H. Wilson | Germany | | 3 | 12E0100334 ** |
| 11 | 53468 | 12E0100353 | 'Schneeauge' | Rhododendron hybr. | Germany | | 3 | 12E0100353 ** |
| 12 | 53496 | 12E0100381 | 'James Burchett' | Rhododendron fortunei Lindl. subsp. discolor (Franch.) D. F. Chamb. | United Kingdom | | 3 | 12E0100381 ** |
| 13 | 53527 | 12E0100412 | 'Hachmann's Charmant' | Rhododendron hybr. | Germany | | 3 | 12E0100412 ** |
| 14 | 53538 | 12E0100423 | 'Janet Blair' | Rhododendron hybr. | United States | | 3 | 12E0100423 ** |
| 15 | 53551 | 12E0100436 | 'Melidioso' | Rhododendron hybr. | Germany | | 3 | 12E0100436 ** |
| 16 | 53553 | 12E0100438 | 'Mrs T. H. Lowinsky' | Rhododendron hybr. | United Kingdom | | 3 | 12E0100438 ** |
| 17 | 53570 | 12E0100455 | 'Schlaraffia' | Rhododendron hybr. | unknown | | 3 | 12E0100455 ** |
| 18 | 53628 | 12E0100513 | 'Diamant Rosa' | Rhododendron kiusianum Makino | Germany | | 3 | 12E0100513 ** |
| 19 | 53651 | 12E0100537 | 'Golden Melodie' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | unknown | | 3 | 12E0100537 ** |
| 20 | 53665 | 12E0100551 | 'Zofie Podlipska' | Rhododendron yedoense Maxim. var. poukhanense (H. Lév.) Nakai | Czech Republic | | 3 | 12E0100551 ** |
| 21 | 53691 | 12E0100610 | 'Sazava' | Rhododendron obtusum (Lindl.) Planch. | Czechoslovakia | | 3 | 12E0100610 ** |
| 22 | 53695 | 12E0100702 | 'Largo' | Rhododendron forrestii Balf. f. ex Diels | Czechoslovakia | | 3 | 12E0100702 ** |
| 23 | 53733 | 12E0100837 | 'Charis' | Rhododendron hybr. | Germany | | 3 | 12E0100837 ** |
| 24 | 65823 | 12E0100883 | 'Rusalka' | Rhododendron decorum Franch. | Czechoslovakia | | 3 | 12E0100883 ** |