| 0 | 53117 | 12E0100002 | 'Antonin Dvorak' | Rhododendron smirnowii Trautv. | Czechoslovakia | | 8 | 12E0100002 ** |
| 1 | 53123 | 12E0100008 | 'Humoreska' | Rhododendron hybr. | Czechoslovakia | | 8 | 12E0100008 ** |
| 2 | 53126 | 12E0100011 | 'Lunik' | Rhododendron smirnowii Trautv. | Czechoslovakia | | 8 | 12E0100011 ** |
| 3 | 53138 | 12E0100023 | 'Vilem Heckel' | Rhododendron hybr. | Czechoslovakia | | 8 | 12E0100023 ** |
| 4 | 53159 | 12E0100044 | 'F. D. Godman' | Rhododendron catawbiense Michx. | United Kingdom | | 8 | 12E0100044 ** |
| 5 | 53169 | 12E0100054 | 'Holbein' | Rhododendron hybr. | Germany | | 8 | 12E0100054 ** |
| 6 | 53180 | 12E0100065 | 'Lee's Dark Purple' | Rhododendron catawbiense Michx. | unknown | | 8 | 12E0100065 ** |
| 7 | 53184 | 12E0100069 | 'Margot' | Rhododendron catawbiense Michx. | Germany | | 8 | 12E0100069 ** |
| 8 | 53185 | 12E0100070 | 'Markgraf' | Rhododendron catawbiense Michx. | Germany | | 8 | 12E0100070 ** |
| 9 | 53188 | 12E0100073 | 'Myrte' | Rhododendron hybr. | Germany | | 8 | 12E0100073 ** |
| 10 | 53200 | 12E0100085 | 'Alaric' | Rhododendron hybr. | United Kingdom | | 8 | 12E0100085 ** |
| 11 | 53204 | 12E0100089 | 'Allah' | Rhododendron catawbiense Michx. | Germany | | 8 | 12E0100089 ** |
| 12 | 53213 | 12E0100098 | 'August' | Rhododendron hybr. | Germany | | 8 | 12E0100098 ** |
| 13 | 53231 | 12E0100116 | 'Delta' | Rhododendron hybr. | Germany | | 8 | 12E0100116 ** |
| 14 | 53261 | 12E0100146 | 'Gesche' | Rhododendron hybr. | Germany | | 8 | 12E0100146 ** |
| 15 | 53280 | 12E0100165 | 'Ibsen' | Rhododendron smirnowii Trautv. | unknown | | 8 | 12E0100165 ** |
| 16 | 53311 | 12E0100196 | 'Jacksonii' | Rhododendron caucasicum Pall. | unknown | | 8 | 12E0100196 ** |
| 17 | 53329 | 12E0100214 | 'Polar Star' | Rhododendron smirnowii Trautv. | Netherlands | | 8 | 12E0100214 ** |
| 18 | 53352 | 12E0100237 | 'Van Weerden Poelman' | Rhododendron hybr. | Netherlands | | 8 | 12E0100237 ** |
| 19 | 53419 | 12E0100304 | 'Old Port' | Rhododendron catawbiense Michx. | United Kingdom | | 8 | 12E0100304 ** |
| 20 | 53457 | 12E0100342 | 'Erato' | Rhododendron hybr. | Germany | | 8 | 12E0100342 ** |
| 21 | 53508 | 12E0100393 | 'Buketta' | Rhododendron hybr. | Germany | | 8 | 12E0100393 ** |
| 22 | 53609 | 12E0100494 | 'Azurika' | Rhododendron impeditum Balf. f. & W. W. Sm. | unknown | | 8 | 12E0100494 ** |
| 23 | 53620 | 12E0100505 | 'Canzonetta' | Rhododendron hybr. | unknown | | 8 | 12E0100505 ** |
| 24 | 53652 | 12E0100538 | 'Goldflimmer' | Rhododendron hybr. | unknown | | 8 | 12E0100538 ** |
| 25 | 53674 | 12E0100560 | 'Marilee' | Rhododendron nakaharae Hayata | unknown | | 8 | 12E0100560 ** |
| 26 | 53690 | 12E0100609 | 'Otava' | Rhododendron obtusum (Lindl.) Planch. | Czechoslovakia | | 8 | 12E0100609 ** |
| 27 | 53703 | 12E0100807 | 'Anna Rose Whitney' | Rhododendron hybr. | United States | | 8 | 12E0100807 ** |
| 28 | 53738 | 12E0100842 | 'Lenora' | Rhododendron ferrugineum L. | Czech Republic | | 8 | 12E0100842 ** |
| 29 | 53752 | 12E0100856 | 'Krivoklat' | Rhododendron hybr. | Czech Republic | | 8 | 12E0100856 ** |