| 0 | 53511 | 12E0100396 | 'Curlew' | Rhododendron hybr. | United Kingdom | | 1 | 12E0100396 ** |
| 1 | 53620 | 12E0100505 | 'Canzonetta' | Rhododendron hybr. | unknown | | 1 | 12E0100505 ** |
| 2 | 53636 | 12E0100521 | 'Rauschenstein' | Rhododendron kiusianum Makino | *German Democratic Republic | | 1 | 12E0100521 ** |
| 3 | 53644 | 12E0100530 | 'Florida' | Rhododendron hybr. | unknown | | 1 | 12E0100530 ** |
| 4 | 53645 | 12E0100531 | 'Satschiko' | Rhododendron hybr. | Germany | | 1 | 12E0100531 ** |
| 5 | 53660 | 12E0100546 | 'Hinodegiri' | Rhododendron hybr. | Japan | | 1 | 12E0100546 ** |
| 6 | 53672 | 12E0100558 | 'Silvester' | Rhododendron hybr. | Netherlands | | 1 | 12E0100558 ** |
| 7 | 53674 | 12E0100560 | 'Marilee' | Rhododendron nakaharae Hayata | unknown | | 1 | 12E0100560 ** |
| 8 | 53675 | 12E0100561 | 'Vuyk's Rosyred' | Rhododendron hybr. | unknown | | 1 | 12E0100561 ** |
| 9 | 53681 | 12E0100567 | 'Signalgluehen' | Rhododendron hybr. | Germany | | 1 | 12E0100567 ** |
| 10 | 53682 | 12E0100601 | 'Blanice' | Rhododendron obtusum (Lindl.) Planch. | Czechoslovakia | | 1 | 12E0100601 ** |
| 11 | 53685 | 12E0100604 | 'Profesor Jersov' | Rhododendron obtusum (Lindl.) Planch. | Czechoslovakia | | 1 | 12E0100604 ** |
| 12 | 53692 | 12E0100611 | 'Vltava' | Rhododendron obtusum (Lindl.) Planch. | Czechoslovakia | | 1 | 12E0100611 ** |
| 13 | 53693 | 12E0100612 | 'Ledikanense' | Rhododendron yedoense Maxim. var. poukhanense (H. Lév.) Nakai | Czechoslovakia | | 1 | 12E0100612 ** |
| 14 | 53712 | 12E0100816 | 'Madame Albert van Hecke' | Rhododendron kaempferi Planch. | Belgium | | 1 | 12E0100816 ** |
| 15 | 53724 | 12E0100828 | 'Schneeglanz' | Rhododendron obtusum (Lindl.) Planch. | Germany | | 1 | 12E0100828 ** |
| 16 | 53740 | 12E0100844 | 'Mala Skala' | Rhododendron obtusum (Lindl.) Planch. | Czech Republic | | 1 | 12E0100844 ** |
| 17 | 65846 | 12E0100888 | 'Snezka' | Rhododendron obtusum (Lindl.) Planch. | Czech Republic | | 1 | 12E0100888 ** |
| 18 | 67927 | 12E0100896 | 'Milesovka' | Rhododendron obtusum (Lindl.) Planch. | Czech Republic | | 1 | 12E0100896 ** |
| 19 | 68273 | 12E0100568 | 'Certoryje' | Rhododendron obtusum (Lindl.) Planch. | Czech Republic | | 1 | 12E0100568 ** |