| 0 | 53121 | 12E0100006 | 'Don Juan' | Rhododendron hybr. | Czechoslovakia | | 5 | 12E0100006 ** |
| 1 | 53127 | 12E0100012 | 'Marka' | Rhododendron decorum Franch. | Czechoslovakia | | 5 | 12E0100012 ** |
| 2 | 53136 | 12E0100021 | 'Saba' | Rhododendron decorum Franch. | Czechoslovakia | | 5 | 12E0100021 ** |
| 3 | 53147 | 12E0100032 | 'Blue Danube' | Rhododendron fortunei Lindl. subsp. discolor (Franch.) D. F. Chamb. | United Kingdom | | 5 | 12E0100032 ** |
| 4 | 53154 | 12E0100039 | 'Cunningham's White' | Rhododendron hybr. | United Kingdom | | 5 | 12E0100039 ** |
| 5 | 53198 | 12E0100083 | 'Admiral Piet Hein' | Rhododendron hybr. | Netherlands | | 5 | 12E0100083 ** |
| 6 | 53199 | 12E0100084 | 'Verbesserte Adriaan Koster' | Rhododendron hybr. | Netherlands | | 5 | 12E0100084 ** |
| 7 | 53216 | 12E0100101 | 'Bashful' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | United Kingdom | | 5 | 12E0100101 ** |
| 8 | 53218 | 12E0100103 | 'Madame Jules Porges' | Rhododendron hybr. | France | | 5 | 12E0100103 ** |
| 9 | 53223 | 12E0100108 | 'Sweet Simplicity' | Rhododendron ponticum L. | United Kingdom | | 5 | 12E0100108 ** |
| 10 | 53253 | 12E0100138 | 'Sir Charles Butler' | Rhododendron fortunei Lindl. subsp. fortunei | unknown | | 5 | 12E0100138 ** |
| 11 | 53267 | 12E0100152 | 'Goldsworth Yellow' | Rhododendron hybr. | United Kingdom | | 5 | 12E0100152 ** |
| 12 | 53283 | 12E0100168 | 'May Firth' | Rhododendron hybr. | unknown | | 5 | 12E0100168 ** |
| 13 | 53298 | 12E0100183 | 'Bambola' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 5 | 12E0100183 ** |
| 14 | 53311 | 12E0100196 | 'Jacksonii' | Rhododendron caucasicum Pall. | unknown | | 5 | 12E0100196 ** |
| 15 | 53317 | 12E0100202 | 'Lissabon' | Rhododendron williamsianum Rehder & E. H. Wilson | Germany | | 5 | 12E0100202 ** |
| 16 | 53331 | 12E0100216 | 'Cannon's Double' | Rhododendron hybr. | United States | | 5 | 12E0100216 ** |
| 17 | 53340 | 12E0100225 | 'Hachmann's Rosita' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 5 | 12E0100225 ** |
| 18 | 53341 | 12E0100226 | 'Royal Pink' | Rhododendron williamsianum Rehder & E. H. Wilson | Germany | | 5 | 12E0100226 ** |
| 19 | 53343 | 12E0100228 | 'Schneekrone' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 5 | 12E0100228 ** |
| 20 | 53349 | 12E0100234 | 'Scarlet Wonder' | Rhododendron forrestii Balf. f. ex Diels subsp. forrestii | Germany | | 5 | 12E0100234 ** |
| 21 | 53353 | 12E0100238 | 'August Lamken' | Rhododendron williamsianum Rehder & E. H. Wilson | Germany | | 5 | 12E0100238 ** |
| 22 | 53354 | 12E0100239 | 'Blueshine Girl' | Rhododendron wardii W. W. Sm. | Germany | | 5 | 12E0100239 ** |
| 23 | 53361 | 12E0100246 | 'Goldika' | Rhododendron wardii W. W. Sm. | Germany | | 5 | 12E0100246 ** |
| 24 | 53375 | 12E0100260 | 'Maharani' | Rhododendron hybr. | Germany | | 5 | 12E0100260 ** |
| 25 | 53377 | 12E0100262 | 'Obergaertner Robenek' | Rhododendron hybr. | Germany | | 5 | 12E0100262 ** |
| 26 | 53392 | 12E0100277 | 'Stadt Essen' | Rhododendron williamsianum Rehder & E. H. Wilson | Germany | | 5 | 12E0100277 ** |
| 27 | 53398 | 12E0100283 | 'Ammerland' | Rhododendron hybr. | Germany | | 5 | 12E0100283 ** |
| 28 | 53402 | 12E0100287 | 'Kluis Sensation' | Rhododendron griffithianum Wight | Netherlands | | 5 | 12E0100287 ** |
| 29 | 53405 | 12E0100290 | 'Prinses Marijke' | Rhododendron hybr. | Netherlands | | 5 | 12E0100290 ** |
| 30 | 53425 | 12E0100310 | 'Goerlitz' | Rhododendron williamsianum Rehder & E. H. Wilson | Germany | | 5 | 12E0100310 ** |
| 31 | 53427 | 12E0100312 | 'Vater Boehlje' | Rhododendron hybr. | Germany | | 5 | 12E0100312 ** |
| 32 | 53429 | 12E0100314 | 'Persil' | Rhododendron hybr. | United Kingdom | | 5 | 12E0100314 ** |
| 33 | 53448 | 12E0100333 | 'Tibet' | Rhododendron williamsianum Rehder & E. H. Wilson | Germany | | 5 | 12E0100333 ** |
| 34 | 53450 | 12E0100335 | 'Silvia' | Rhododendron hybr. | Germany | | 5 | 12E0100335 ** |
| 35 | 53453 | 12E0100338 | 'Odessa' | Rhododendron smirnowii Trautv. | unknown | | 5 | 12E0100338 ** |
| 36 | 53465 | 12E0100350 | 'Balalaika' | Rhododendron dichroanthum Diels subsp. scyphocalyx (Balf. f. & Forrest) Cowan | Germany | | 5 | 12E0100350 ** |
| 37 | 53475 | 12E0100360 | 'Malwine' | Rhododendron hybr. | Germany | | 5 | 12E0100360 ** |
| 38 | 53478 | 12E0100363 | 'Clivia' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 5 | 12E0100363 ** |
| 39 | 53483 | 12E0100368 | 'Fruehlingsgold' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 5 | 12E0100368 ** |
| 40 | 53492 | 12E0100377 | 'Sarina' | Rhododendron hybr. | Germany | | 5 | 12E0100377 ** |
| 41 | 53499 | 12E0100384 | 'Arthur Stevens' | Rhododendron hybr. | United Kingdom | | 5 | 12E0100384 ** |
| 42 | 53507 | 12E0100392 | 'Bluebird' | Rhododendron hybr. | United Kingdom | | 5 | 12E0100392 ** |
| 43 | 53508 | 12E0100393 | 'Buketta' | Rhododendron hybr. | Germany | | 5 | 12E0100393 ** |
| 44 | 53536 | 12E0100421 | 'Hachmann's Juanita' | Rhododendron hybr. | Germany | | 5 | 12E0100421 ** |
| 45 | 53540 | 12E0100425 | 'Radiant' | Rhododendron hybr. | Netherlands | | 5 | 12E0100425 ** |
| 46 | 53549 | 12E0100434 | 'J. Jennings' | Rhododendron hybr. | United Kingdom | | 5 | 12E0100434 ** |
| 47 | 53560 | 12E0100445 | 'Silver Slipper' | Rhododendron hybr. | United Kingdom | | 5 | 12E0100445 ** |
| 48 | 53562 | 12E0100447 | 'Professor J. H. Zaaijer' | Rhododendron catawbiense Michx. | Netherlands | | 5 | 12E0100447 ** |
| 49 | 53580 | 12E0100465 | 'Torero' | Rhododendron hybr. | Germany | | 5 | 12E0100465 ** |
| 50 | 53582 | 12E0100467 | 'Soir de Paris' | Rhododendron viscosum (L.) Torr. | Netherlands | | 5 | 12E0100467 ** |
| 51 | 53589 | 12E0100474 | 'Cecile' | Rhododendron hybr. | United Kingdom | | 5 | 12E0100474 ** |
| 52 | 53596 | 12E0100481 | 'Glowing Embers' | Rhododendron hybr. | United Kingdom | | 5 | 12E0100481 ** |
| 53 | 53601 | 12E0100486 | 'Goldtopas' | Rhododendron hybr. | Germany | | 5 | 12E0100486 ** |
| 54 | 53602 | 12E0100487 | 'Hachmann's Harlekin' | Rhododendron hybr. | Germany | | 5 | 12E0100487 ** |
| 55 | 53605 | 12E0100490 | 'Klondyke' | Rhododendron hybr. | United Kingdom | | 5 | 12E0100490 ** |
| 56 | 53609 | 12E0100494 | 'Azurika' | Rhododendron impeditum Balf. f. & W. W. Sm. | unknown | | 5 | 12E0100494 ** |
| 57 | 53610 | 12E0100495 | 'Azurwolke' | Rhododendron hybr. | unknown | | 5 | 12E0100495 ** |
| 58 | 53625 | 12E0100510 | 'Corneille' | Rhododendron hybr. | unknown | | 5 | 12E0100510 ** |
| 59 | 53626 | 12E0100511 | 'Diamant Lachs' | Rhododendron kiusianum Makino | Germany | | 5 | 12E0100511 ** |
| 60 | 53650 | 12E0100536 | 'Gloria Mundi' | Rhododendron hybr. | unknown | | 5 | 12E0100536 ** |
| 61 | 53667 | 12E0100553 | 'Fuego' | Rhododendron haematodes Franch. | Germany | | 5 | 12E0100553 ** |
| 62 | 53671 | 12E0100557 | 'Silberglanz' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 5 | 12E0100557 ** |
| 63 | 53696 | 12E0100703 | 'Ma vlast' | Rhododendron forrestii Balf. f. ex Diels | Czechoslovakia | | 5 | 12E0100703 ** |
| 64 | 53699 | 12E0100803 | 'Reve d'Amour' | Rhododendron viscosum (L.) Torr. | Netherlands | | 5 | 12E0100803 ** |
| 65 | 53715 | 12E0100819 | 'Viscy' | Rhododendron hybr. | Germany | | 5 | 12E0100819 ** |
| 66 | 53721 | 12E0100825 | 'Gartendirektor Rieger' | Rhododendron williamsianum Rehder & E. H. Wilson | Germany | | 5 | 12E0100825 ** |
| 67 | 53732 | 12E0100836 | 'Dolcemente' | Rhododendron hybr. | Germany | | 5 | 12E0100836 ** |
| 68 | 53738 | 12E0100842 | 'Lenora' | Rhododendron ferrugineum L. | Czech Republic | | 5 | 12E0100842 ** |
| 69 | 53739 | 12E0100843 | 'Loket' | Rhododendron strigillosum Franch. | Czech Republic | | 5 | 12E0100843 ** |
| 70 | 53747 | 12E0100851 | 'Vizovice' | Rhododendron kiusianum Makino | Czech Republic | | 5 | 12E0100851 ** |
| 71 | 53754 | 12E0100858 | 'Bezdez' | Rhododendron ponticum L. | Czech Republic | | 5 | 12E0100858 ** |
| 72 | 53768 | 12E0100872 | 'Osmar' | Rhododendron williamsianum Rehder & E. H. Wilson | United Kingdom | | 5 | 12E0100872 ** |
| 73 | 64798 | 12E0100880 | 'Kotnov' | Rhododendron hybr. | Czech Republic | | 5 | 12E0100880 ** |
| 74 | 65600 | 12E0100882 | 'Klenova' | Rhododendron hybr. | Czech Republic | | 5 | 12E0100882 ** |
| 75 | 65823 | 12E0100883 | 'Rusalka' | Rhododendron decorum Franch. | Czechoslovakia | | 5 | 12E0100883 ** |
| 76 | 65824 | 12E0100884 | 'Loreta' | Rhododendron wardii W. W. Sm. | Czech Republic | | 5 | 12E0100884 ** |
| 77 | 65918 | 12E0100893 | 'Hachmann's Mercator' | Rhododendron hybr. | Germany | | 5 | 12E0100893 ** |