| 0 | 53141 | 12E0100026 | 'Album Grandiflorum' | Rhododendron catawbiense Michx. | United Kingdom | | 5 | 12E0100026 ** |
| 1 | 53160 | 12E0100045 | 'Fastuosum Flore Pleno' | Rhododendron hybr. | unknown | | 5 | 12E0100045 ** |
| 2 | 53173 | 12E0100058 | 'Jewess' | Rhododendron caucasicum Pall. | Germany | | 5 | 12E0100058 ** |
| 3 | 53247 | 12E0100132 | 'Erich' | Rhododendron hybr. | Germany | | 5 | 12E0100132 ** |
| 4 | 53342 | 12E0100227 | 'Scharnhorst' | Rhododendron catawbiense Michx. | Germany | | 5 | 12E0100227 ** |
| 5 | 53349 | 12E0100234 | 'Scarlet Wonder' | Rhododendron forrestii Balf. f. ex Diels subsp. forrestii | Germany | | 5 | 12E0100234 ** |
| 6 | 53397 | 12E0100282 | 'Admiral Vanessa' | Rhododendron fortunei Lindl. subsp. discolor (Franch.) D. F. Chamb. | Germany | | 5 | 12E0100282 ** |
| 7 | 53429 | 12E0100314 | 'Persil' | Rhododendron hybr. | United Kingdom | | 5 | 12E0100314 ** |
| 8 | 53462 | 12E0100347 | 'Rasputin' | Rhododendron hybr. | Germany | | 5 | 12E0100347 ** |
| 9 | 53464 | 12E0100349 | 'Tamarindos' | Rhododendron hybr. | Germany | | 5 | 12E0100349 ** |
| 10 | 53474 | 12E0100359 | 'Ricarda' | Rhododendron hybr. | Germany | | 5 | 12E0100359 ** |
| 11 | 53492 | 12E0100377 | 'Sarina' | Rhododendron hybr. | Germany | | 5 | 12E0100377 ** |
| 12 | 53508 | 12E0100393 | 'Buketta' | Rhododendron hybr. | Germany | | 5 | 12E0100393 ** |
| 13 | 53529 | 12E0100414 | 'Herkules' | Rhododendron campanulatum D. Don | Germany | | 5 | 12E0100414 ** |
| 14 | 53553 | 12E0100438 | 'Mrs T. H. Lowinsky' | Rhododendron hybr. | United Kingdom | | 5 | 12E0100438 ** |
| 15 | 53559 | 12E0100444 | 'Pride of Cambridge' | Rhododendron hybr. | unknown | | 5 | 12E0100444 ** |
| 16 | 53589 | 12E0100474 | 'Cecile' | Rhododendron hybr. | United Kingdom | | 5 | 12E0100474 ** |
| 17 | 53637 | 12E0100522 | 'Schrammstein' | Rhododendron kiusianum Makino | unknown | | 5 | 12E0100522 ** |
| 18 | 53687 | 12E0100606 | 'Morava' | Rhododendron obtusum (Lindl.) Planch. | Czechoslovakia | | 5 | 12E0100606 ** |
| 19 | 53702 | 12E0100806 | 'Hachmann's Mikado' | Rhododendron hybr. | Germany | | 5 | 12E0100806 ** |
| 20 | 53708 | 12E0100812 | 'Hyperion' | Rhododendron hybr. | United Kingdom | | 5 | 12E0100812 ** |
| 21 | 53726 | 12E0100830 | 'Hermine Seidel' | Rhododendron catawbiense Michx. | Germany | | 5 | 12E0100830 ** |
| 22 | 53737 | 12E0100841 | 'Lednice' | Rhododendron obtusum (Lindl.) Planch. | Czech Republic | | 5 | 12E0100841 ** |
| 23 | 53741 | 12E0100845 | 'Profesor Scholz' | Rhododendron dichroanthum Diels subsp. scyphocalyx (Balf. f. & Forrest) Cowan | Czech Republic | | 5 | 12E0100845 ** |
| 24 | 53745 | 12E0100849 | 'Veltrusy' | Rhododendron obtusum (Lindl.) Planch. | Czech Republic | | 5 | 12E0100849 ** |
| 25 | 53755 | 12E0100859 | 'Kokorin' | Rhododendron hybr. | Czech Republic | | 5 | 12E0100859 ** |
| 26 | 53771 | 12E0100875 | 'Opocno' | Rhododendron obtusum (Lindl.) Planch. | Czech Republic | | 5 | 12E0100875 ** |
| 27 | 53773 | 12E0100877 | 'Sovinec' | Rhododendron hybr. | Czech Republic | | 5 | 12E0100877 ** |
| 28 | 64798 | 12E0100880 | 'Kotnov' | Rhododendron hybr. | Czech Republic | | 5 | 12E0100880 ** |
| 29 | 67927 | 12E0100896 | 'Milesovka' | Rhododendron obtusum (Lindl.) Planch. | Czech Republic | | 5 | 12E0100896 ** |