| 0 | 53117 | 12E0100002 | 'Antonin Dvorak' | Rhododendron smirnowii Trautv. | Czechoslovakia | | 0 | 12E0100002 ** |
| 1 | 53119 | 12E0100004 | 'Bohumil Kavka' | Rhododendron hybr. | Czechoslovakia | | 0 | 12E0100004 ** |
| 2 | 53125 | 12E0100010 | 'Lajka' | Rhododendron smirnowii Trautv. | Czechoslovakia | | 0 | 12E0100010 ** |
| 3 | 53126 | 12E0100011 | 'Lunik' | Rhododendron smirnowii Trautv. | Czechoslovakia | | 0 | 12E0100011 ** |
| 4 | 53128 | 12E0100013 | 'Milan' | Rhododendron hybr. | Czechoslovakia | | 0 | 12E0100013 ** |
| 5 | 53144 | 12E0100029 | 'Arthur Bedford' | Rhododendron ponticum L. | United Kingdom | | 0 | 12E0100029 ** |
| 6 | 53149 | 12E0100034 | 'Boule de Neige' | Rhododendron hybr. | France | | 0 | 12E0100034 ** |
| 7 | 53151 | 12E0100036 | 'Catawbiense Album' | Rhododendron catawbiense Michx. | United Kingdom | | 0 | 12E0100036 ** |
| 8 | 53152 | 12E0100037 | 'Catawbiense Boursault' | Rhododendron catawbiense Michx. | United Kingdom | | 0 | 12E0100037 ** |
| 9 | 53153 | 12E0100038 | 'Catawbiense Grandiflorum' | Rhododendron catawbiense Michx. | United Kingdom | | 0 | 12E0100038 ** |
| 10 | 53154 | 12E0100039 | 'Cunningham's White' | Rhododendron hybr. | United Kingdom | | 0 | 12E0100039 ** |
| 11 | 53156 | 12E0100041 | 'Doctor H. C. Dresselhuys' | Rhododendron hybr. | Netherlands | | 0 | 12E0100041 ** |
| 12 | 53163 | 12E0100048 | 'Genoveva' | Rhododendron catawbiense Michx. | Germany | | 0 | 12E0100048 ** |
| 13 | 53166 | 12E0100051 | 'Gomer Waterer' | Rhododendron catawbiense Michx. | United Kingdom | | 0 | 12E0100051 ** |
| 14 | 53179 | 12E0100064 | 'Lavender Girl' | Rhododendron fortunei Lindl. subsp. fortunei | United Kingdom | | 0 | 12E0100064 ** |
| 15 | 53181 | 12E0100066 | 'Leopold' | Rhododendron catawbiense Michx. | Germany | | 0 | 12E0100066 ** |
| 16 | 53182 | 12E0100067 | 'Madame Masson' | Rhododendron hybr. | France | | 0 | 12E0100067 ** |
| 17 | 53204 | 12E0100089 | 'Allah' | Rhododendron catawbiense Michx. | Germany | | 0 | 12E0100089 ** |
| 18 | 53247 | 12E0100132 | 'Erich' | Rhododendron hybr. | Germany | | 0 | 12E0100132 ** |
| 19 | 53284 | 12E0100169 | 'Ponticum Roseum' | Rhododendron hybr. | United States | | 0 | 12E0100169 ** |
| 20 | 53295 | 12E0100180 | 'Marie Fortie' | Rhododendron hybr. | Belgium | | 0 | 12E0100180 ** |
| 21 | 53298 | 12E0100183 | 'Bambola' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 0 | 12E0100183 ** |
| 22 | 53300 | 12E0100185 | 'Hachmann's Belona' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 0 | 12E0100185 ** |
| 23 | 53313 | 12E0100198 | 'Kantilene' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 0 | 12E0100198 ** |
| 24 | 53315 | 12E0100200 | 'Lamentosa' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 0 | 12E0100200 ** |
| 25 | 53323 | 12E0100208 | 'Nova Zembla' | Rhododendron catawbiense Michx. | Netherlands | | 0 | 12E0100208 ** |
| 26 | 53324 | 12E0100209 | 'Von Oheimb - Woislowitz' | Rhododendron catawbiense Michx. | Germany | | 0 | 12E0100209 ** |
| 27 | 53330 | 12E0100215 | 'Hachmann's Porzellan' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 0 | 12E0100215 ** |
| 28 | 53338 | 12E0100223 | 'Roseum Elegans' | Rhododendron catawbiense Michx. | United Kingdom | | 0 | 12E0100223 ** |
| 29 | 53339 | 12E0100224 | 'Roseum Superbum' | Rhododendron catawbiense Michx. | United Kingdom | | 0 | 12E0100224 ** |
| 30 | 53343 | 12E0100228 | 'Schneekrone' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 0 | 12E0100228 ** |
| 31 | 53344 | 12E0100229 | 'Schneewolke' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 0 | 12E0100229 ** |
| 32 | 53368 | 12E0100253 | 'Julischka' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 0 | 12E0100253 ** |
| 33 | 53369 | 12E0100254 | 'Hachmann's Junifeuer' | Rhododendron hybr. | Germany | | 0 | 12E0100254 ** |
| 34 | 53371 | 12E0100256 | 'Hachmann's Lagerfeuer' | Rhododendron hybr. | Germany | | 0 | 12E0100256 ** |
| 35 | 53385 | 12E0100270 | 'Redwood' | Rhododendron insigne Hemsl. & E. H. Wilson | Germany | | 0 | 12E0100270 ** |
| 36 | 53390 | 12E0100275 | 'Seestadt Bremerhaven' | Rhododendron insigne Hemsl. & E. H. Wilson | Germany | | 0 | 12E0100275 ** |
| 37 | 53405 | 12E0100290 | 'Prinses Marijke' | Rhododendron hybr. | Netherlands | | 0 | 12E0100290 ** |
| 38 | 53426 | 12E0100311 | 'Rothenburg' | Rhododendron williamsianum Rehder & E. H. Wilson | Germany | | 0 | 12E0100311 ** |
| 39 | 53427 | 12E0100312 | 'Vater Boehlje' | Rhododendron hybr. | Germany | | 0 | 12E0100312 ** |
| 40 | 53430 | 12E0100315 | 'Ben Moseley' | Rhododendron fortunei Lindl. subsp. fortunei | United States | | 0 | 12E0100315 ** |
| 41 | 53449 | 12E0100334 | 'Ariane' | Rhododendron insigne Hemsl. & E. H. Wilson | Germany | | 0 | 12E0100334 ** |
| 42 | 53452 | 12E0100337 | 'Ovation' | Rhododendron haematodes Franch. | United Kingdom | | 0 | 12E0100337 ** |
| 43 | 53469 | 12E0100354 | 'Hachmann's Diadem' | Rhododendron hybr. | Germany | | 0 | 12E0100354 ** |
| 44 | 53473 | 12E0100358 | 'Puccini' | Rhododendron hybr. | Germany | | 0 | 12E0100358 ** |
| 45 | 53478 | 12E0100363 | 'Clivia' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 0 | 12E0100363 ** |
| 46 | 53506 | 12E0100391 | 'Blue Tit Magor' | Rhododendron impeditum Balf. f. & W. W. Sm. | United Kingdom | | 0 | 12E0100391 ** |
| 47 | 53517 | 12E0100402 | 'Edelweiss' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 0 | 12E0100402 ** |
| 48 | 53527 | 12E0100412 | 'Hachmann's Charmant' | Rhododendron hybr. | Germany | | 0 | 12E0100412 ** |
| 49 | 53541 | 12E0100426 | 'Ken Janeck' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | United States | | 0 | 12E0100426 ** |
| 50 | 53547 | 12E0100432 | 'Lavendelzauber' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 0 | 12E0100432 ** |
| 51 | 53570 | 12E0100455 | 'Schlaraffia' | Rhododendron hybr. | unknown | | 0 | 12E0100455 ** |
| 52 | 53580 | 12E0100465 | 'Torero' | Rhododendron hybr. | Germany | | 0 | 12E0100465 ** |
| 53 | 53581 | 12E0100466 | 'Kalamaika' | Rhododendron hybr. | Germany | | 0 | 12E0100466 ** |
| 54 | 53669 | 12E0100555 | 'Henry's Red' | Rhododendron hybr. | Germany | | 0 | 12E0100555 ** |
| 55 | 53671 | 12E0100557 | 'Silberglanz' | Rhododendron degronianum Carrière subsp. yakushimanum (Nakai) H. Hara var. yakushimanum (Nakai) Kitam. | Germany | | 0 | 12E0100557 ** |
| 56 | 53672 | 12E0100558 | 'Silvester' | Rhododendron hybr. | Netherlands | | 0 | 12E0100558 ** |
| 57 | 53676 | 12E0100562 | 'Ramapo' | Rhododendron minus Michx. var. minus | unknown | | 0 | 12E0100562 ** |
| 58 | 53677 | 12E0100563 | 'Audia' | Rhododendron impeditum Balf. f. & W. W. Sm. | unknown | | 0 | 12E0100563 ** |
| 59 | 53678 | 12E0100564 | 'Krumlov' | Rhododendron impeditum Balf. f. & W. W. Sm. | Czechoslovakia | | 0 | 12E0100564 ** |
| 60 | 53679 | 12E0100565 | 'Buchlovice' | Rhododendron impeditum Balf. f. & W. W. Sm. | Czechoslovakia | | 0 | 12E0100565 ** |
| 61 | 53680 | 12E0100566 | 'Charles Bagley' | Rhododendron catawbiense Michx. | United Kingdom | | 0 | 12E0100566 ** |
| 62 | 53697 | 12E0100801 | 'Sychrov' | Rhododendron impeditum Balf. f. & W. W. Sm. | Czechoslovakia | | 0 | 12E0100801 ** |