| 0 | 53118 | 12E0100003 | 'Aurora' | Rhododendron smirnowii Trautv. | Czechoslovakia | | 2 | 12E0100003 ** |
| 1 | 53121 | 12E0100006 | 'Don Juan' | Rhododendron hybr. | Czechoslovakia | | 2 | 12E0100006 ** |
| 2 | 53126 | 12E0100011 | 'Lunik' | Rhododendron smirnowii Trautv. | Czechoslovakia | | 2 | 12E0100011 ** |
| 3 | 53129 | 12E0100014 | 'Moravanka' | Rhododendron dichroanthum Diels subsp. scyphocalyx (Balf. f. & Forrest) Cowan | Czechoslovakia | | 2 | 12E0100014 ** |
| 4 | 53134 | 12E0100019 | 'Profesor Jelinek' | Rhododendron smirnowii Trautv. | Czechoslovakia | | 2 | 12E0100019 ** |
| 5 | 53137 | 12E0100022 | 'Sputnik' | Rhododendron smirnowii Trautv. | Czechoslovakia | | 2 | 12E0100022 ** |
| 6 | 53138 | 12E0100023 | 'Vilem Heckel' | Rhododendron hybr. | Czechoslovakia | | 2 | 12E0100023 ** |
| 7 | 53144 | 12E0100029 | 'Arthur Bedford' | Rhododendron ponticum L. | United Kingdom | | 2 | 12E0100029 ** |
| 8 | 53147 | 12E0100032 | 'Blue Danube' | Rhododendron fortunei Lindl. subsp. discolor (Franch.) D. F. Chamb. | United Kingdom | | 2 | 12E0100032 ** |
| 9 | 53191 | 12E0100076 | 'Picturatum' | Rhododendron maximum L. | United Kingdom | | 2 | 12E0100076 ** |
| 10 | 53221 | 12E0100106 | 'Blue Tit' | Rhododendron impeditum Balf. f. & W. W. Sm. | United Kingdom | | 2 | 12E0100106 ** |
| 11 | 53284 | 12E0100169 | 'Ponticum Roseum' | Rhododendron hybr. | United States | | 2 | 12E0100169 ** |
| 12 | 53295 | 12E0100180 | 'Marie Fortie' | Rhododendron hybr. | Belgium | | 2 | 12E0100180 ** |
| 13 | 53300 | 12E0100185 | 'Hachmann's Belona' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 2 | 12E0100185 ** |
| 14 | 53411 | 12E0100296 | 'Blue Bell' | Rhododendron hybr. | United Kingdom | | 2 | 12E0100296 ** |
| 15 | 53467 | 12E0100352 | 'Astrid' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 2 | 12E0100352 ** |
| 16 | 53527 | 12E0100412 | 'Hachmann's Charmant' | Rhododendron hybr. | Germany | | 2 | 12E0100412 ** |
| 17 | 53609 | 12E0100494 | 'Azurika' | Rhododendron impeditum Balf. f. & W. W. Sm. | unknown | | 2 | 12E0100494 ** |
| 18 | 53668 | 12E0100554 | 'Baroness Henry Schroeder' | Rhododendron hybr. | Germany | | 2 | 12E0100554 ** |
| 19 | 53682 | 12E0100601 | 'Blanice' | Rhododendron obtusum (Lindl.) Planch. | Czechoslovakia | | 2 | 12E0100601 ** |
| 20 | 53683 | 12E0100602 | 'Boubin' | Rhododendron obtusum (Lindl.) Planch. | Czechoslovakia | | 2 | 12E0100602 ** |
| 21 | 53684 | 12E0100603 | 'Doubrava' | Rhododendron obtusum (Lindl.) Planch. | Czechoslovakia | | 2 | 12E0100603 ** |
| 22 | 53685 | 12E0100604 | 'Profesor Jersov' | Rhododendron obtusum (Lindl.) Planch. | Czechoslovakia | | 2 | 12E0100604 ** |
| 23 | 53686 | 12E0100605 | 'Labe' | Rhododendron obtusum (Lindl.) Planch. | Czechoslovakia | | 2 | 12E0100605 ** |
| 24 | 53688 | 12E0100607 | 'Orlice' | Rhododendron obtusum (Lindl.) Planch. | Czechoslovakia | | 2 | 12E0100607 ** |
| 25 | 53689 | 12E0100608 | 'Oslava' | Rhododendron obtusum (Lindl.) Planch. | Czechoslovakia | | 2 | 12E0100608 ** |
| 26 | 53690 | 12E0100609 | 'Otava' | Rhododendron obtusum (Lindl.) Planch. | Czechoslovakia | | 2 | 12E0100609 ** |
| 27 | 53691 | 12E0100610 | 'Sazava' | Rhododendron obtusum (Lindl.) Planch. | Czechoslovakia | | 2 | 12E0100610 ** |
| 28 | 53693 | 12E0100612 | 'Ledikanense' | Rhododendron yedoense Maxim. var. poukhanense (H. Lév.) Nakai | Czechoslovakia | | 2 | 12E0100612 ** |
| 29 | 53695 | 12E0100702 | 'Largo' | Rhododendron forrestii Balf. f. ex Diels | Czechoslovakia | | 2 | 12E0100702 ** |
| 30 | 53718 | 12E0100822 | 'Dominik' | Rhododendron hybr. | Germany | | 2 | 12E0100822 ** |
| 31 | 53726 | 12E0100830 | 'Hermine Seidel' | Rhododendron catawbiense Michx. | Germany | | 2 | 12E0100830 ** |
| 32 | 53733 | 12E0100837 | 'Charis' | Rhododendron hybr. | Germany | | 2 | 12E0100837 ** |
| 33 | 65840 | 12E0100887 | 'Karin Seleger' | Rhododendron insigne Hemsl. & E. H. Wilson | Switzerland | | 2 | 12E0100887 ** |
| 34 | 65918 | 12E0100893 | 'Hachmann's Mercator' | Rhododendron hybr. | Germany | | 2 | 12E0100893 ** |
| 35 | 65919 | 12E0100894 | 'Hachhans' | Rhododendron hybr. | Germany | | 2 | 12E0100894 ** |