| 0 | 53116 | 12E0100001 | 'Alena' | Rhododendron decorum Franch. | Czechoslovakia | | 6 | 12E0100001 ** |
| 1 | 53119 | 12E0100004 | 'Bohumil Kavka' | Rhododendron hybr. | Czechoslovakia | | 6 | 12E0100004 ** |
| 2 | 53121 | 12E0100006 | 'Don Juan' | Rhododendron hybr. | Czechoslovakia | | 6 | 12E0100006 ** |
| 3 | 53139 | 12E0100024 | 'Arnost Silva Tarouca' | Rhododendron decorum Franch. | Czechoslovakia | | 6 | 12E0100024 ** |
| 4 | 53299 | 12E0100184 | 'Barmstedt' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 6 | 12E0100184 ** |
| 5 | 53368 | 12E0100253 | 'Julischka' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 6 | 12E0100253 ** |
| 6 | 53386 | 12E0100271 | 'Rendezvous' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 6 | 12E0100271 ** |
| 7 | 53387 | 12E0100272 | 'Hachmann's Rosarka' | Rhododendron insigne Hemsl. & E. H. Wilson | Germany | | 6 | 12E0100272 ** |
| 8 | 53390 | 12E0100275 | 'Seestadt Bremerhaven' | Rhododendron insigne Hemsl. & E. H. Wilson | Germany | | 6 | 12E0100275 ** |
| 9 | 53429 | 12E0100314 | 'Persil' | Rhododendron hybr. | United Kingdom | | 6 | 12E0100314 ** |
| 10 | 53481 | 12E0100366 | 'Eggert Rohwer' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 6 | 12E0100366 ** |
| 11 | 53560 | 12E0100445 | 'Silver Slipper' | Rhododendron hybr. | United Kingdom | | 6 | 12E0100445 ** |
| 12 | 53568 | 12E0100453 | 'Hachmann's Rosenelfe' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 6 | 12E0100453 ** |
| 13 | 53591 | 12E0100476 | 'Fasching' | Rhododendron hybr. | Germany | | 6 | 12E0100476 ** |
| 14 | 53613 | 12E0100498 | 'Blaauw's Pink' | Rhododendron hybr. | unknown | | 6 | 12E0100498 ** |
| 15 | 53626 | 12E0100511 | 'Diamant Lachs' | Rhododendron kiusianum Makino | Germany | | 6 | 12E0100511 ** |
| 16 | 53634 | 12E0100519 | 'Koenigstein' | Rhododendron kiusianum Makino | *German Democratic Republic | | 6 | 12E0100519 ** |
| 17 | 53637 | 12E0100522 | 'Schrammstein' | Rhododendron kiusianum Makino | unknown | | 6 | 12E0100522 ** |
| 18 | 53655 | 12E0100541 | 'Haruko' | Rhododendron hybr. | unknown | | 6 | 12E0100541 ** |
| 19 | 53672 | 12E0100558 | 'Silvester' | Rhododendron hybr. | Netherlands | | 6 | 12E0100558 ** |
| 20 | 53685 | 12E0100604 | 'Profesor Jersov' | Rhododendron obtusum (Lindl.) Planch. | Czechoslovakia | | 6 | 12E0100604 ** |
| 21 | 53686 | 12E0100605 | 'Labe' | Rhododendron obtusum (Lindl.) Planch. | Czechoslovakia | | 6 | 12E0100605 ** |
| 22 | 53689 | 12E0100608 | 'Oslava' | Rhododendron obtusum (Lindl.) Planch. | Czechoslovakia | | 6 | 12E0100608 ** |
| 23 | 53711 | 12E0100815 | 'Jock Brydon' | Rhododendron occidentale (Torr. & A. Gray) A. Gray | Oregon, United States | | 6 | 12E0100815 ** |
| 24 | 53712 | 12E0100816 | 'Madame Albert van Hecke' | Rhododendron kaempferi Planch. | Belgium | | 6 | 12E0100816 ** |
| 25 | 53716 | 12E0100820 | 'Bariton' | Rhododendron hybr. | Germany | | 6 | 12E0100820 ** |
| 26 | 53739 | 12E0100843 | 'Loket' | Rhododendron strigillosum Franch. | Czech Republic | | 6 | 12E0100843 ** |
| 27 | 53746 | 12E0100850 | 'Fuellhorn' | Rhododendron hybr. | Germany | | 6 | 12E0100850 ** |
| 28 | 53772 | 12E0100876 | 'Svihov' | Rhododendron hybr. | Czech Republic | | 6 | 12E0100876 ** |