| 0 | 53129 | 12E0100014 | 'Moravanka' | Rhododendron dichroanthum Diels subsp. scyphocalyx (Balf. f. & Forrest) Cowan | Czechoslovakia | | 0 | 12E0100014 ** |
| 1 | 53151 | 12E0100036 | 'Catawbiense Album' | Rhododendron catawbiense Michx. | United Kingdom | | 0 | 12E0100036 ** |
| 2 | 53152 | 12E0100037 | 'Catawbiense Boursault' | Rhododendron catawbiense Michx. | United Kingdom | | 0 | 12E0100037 ** |
| 3 | 53182 | 12E0100067 | 'Madame Masson' | Rhododendron hybr. | France | | 0 | 12E0100067 ** |
| 4 | 53216 | 12E0100101 | 'Bashful' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | United Kingdom | | 0 | 12E0100101 ** |
| 5 | 53262 | 12E0100147 | 'Giganteum' | Rhododendron catawbiense Michx. | United Kingdom | | 0 | 12E0100147 ** |
| 6 | 53284 | 12E0100169 | 'Ponticum Roseum' | Rhododendron hybr. | United States | | 0 | 12E0100169 ** |
| 7 | 53316 | 12E0100201 | 'Leopardii' | Rhododendron arboreum Sm. | United Kingdom | | 0 | 12E0100201 ** |
| 8 | 53338 | 12E0100223 | 'Roseum Elegans' | Rhododendron catawbiense Michx. | United Kingdom | | 0 | 12E0100223 ** |
| 9 | 53341 | 12E0100226 | 'Royal Pink' | Rhododendron williamsianum Rehder & E. H. Wilson | Germany | | 0 | 12E0100226 ** |
| 10 | 53411 | 12E0100296 | 'Blue Bell' | Rhododendron hybr. | United Kingdom | | 0 | 12E0100296 ** |
| 11 | 53494 | 12E0100379 | 'Parkfeuer' | Rhododendron hybr. | Germany | | 0 | 12E0100379 ** |
| 12 | 53682 | 12E0100601 | 'Blanice' | Rhododendron obtusum (Lindl.) Planch. | Czechoslovakia | | 0 | 12E0100601 ** |
| 13 | 53683 | 12E0100602 | 'Boubin' | Rhododendron obtusum (Lindl.) Planch. | Czechoslovakia | | 0 | 12E0100602 ** |
| 14 | 53684 | 12E0100603 | 'Doubrava' | Rhododendron obtusum (Lindl.) Planch. | Czechoslovakia | | 0 | 12E0100603 ** |
| 15 | 53685 | 12E0100604 | 'Profesor Jersov' | Rhododendron obtusum (Lindl.) Planch. | Czechoslovakia | | 0 | 12E0100604 ** |
| 16 | 53687 | 12E0100606 | 'Morava' | Rhododendron obtusum (Lindl.) Planch. | Czechoslovakia | | 0 | 12E0100606 ** |
| 17 | 53688 | 12E0100607 | 'Orlice' | Rhododendron obtusum (Lindl.) Planch. | Czechoslovakia | | 0 | 12E0100607 ** |
| 18 | 53689 | 12E0100608 | 'Oslava' | Rhododendron obtusum (Lindl.) Planch. | Czechoslovakia | | 0 | 12E0100608 ** |
| 19 | 53690 | 12E0100609 | 'Otava' | Rhododendron obtusum (Lindl.) Planch. | Czechoslovakia | | 0 | 12E0100609 ** |
| 20 | 53691 | 12E0100610 | 'Sazava' | Rhododendron obtusum (Lindl.) Planch. | Czechoslovakia | | 0 | 12E0100610 ** |
| 21 | 53692 | 12E0100611 | 'Vltava' | Rhododendron obtusum (Lindl.) Planch. | Czechoslovakia | | 0 | 12E0100611 ** |
| 22 | 53693 | 12E0100612 | 'Ledikanense' | Rhododendron yedoense Maxim. var. poukhanense (H. Lév.) Nakai | Czechoslovakia | | 0 | 12E0100612 ** |
| 23 | 53704 | 12E0100808 | 'Nippon' | Rhododendron wardii W. W. Sm. | Germany | | 0 | 12E0100808 ** |