For rhododendron hybridisers

Hybridisers - Seed-species - Pollen-species - Seed-hybrid - Pollen-hybrid -   Hybrids/year - Back

All hybrid data based on IRRC, JARS or ICRA.?
IRRC
The International Rhododendron Register and Checklist, Royal Horticultural Society.

JARS
Journal of the American Rhododendron Society

ICRA
International Cultivar Registration Authority

For questions, suggestion or comments do not hesitate to email.


List of Hybridisers   ordered by:   #plants   name
#Name# Plants
1Delp Weldon E., Harrisville, Pensylvania, USA426
2Rothschild, L. de, Founder of Exbury Gardens, UK

  Rothschild, L. de (1882-1942)
357
3Hachmann, Hans, Barmstedt in Holstein, Germany

  Hachmann, Hans
352
4Morrison, B.Y., Pass Christian, Mississippi, USA324
5Aberconway, Lord, Bodnant, Tal-y-Cafn, Wales259
6Waterer, H. (Knaphill), Woking, Surrey (Knaphill), UK251
7Waterer (Bagshot), Surrey, England203
8Barlup, Jim, Bellevue, USA

  Barlup, Jim
192
9Gable, J.B., Stewartstown, Pennsylvania, USA

  Gable, J.B.
164
10Aromi, E.J, Mobile, Alabama, USA

  Aromi, E.J
158
11Seidel, T.J.R., Dresden/Grüngräbchen, Germany

  Seidel, T.J.R. (1861-1918)
149
12Dexter, C.O., Sandwich, MA, USA

  Dexter, C.O. (1862-1943)
147
13Nuccio's Nurseries, Altadena, California, USA146
14Van Houtte, L. B. (Louis Benoit), Gentbrugge, Belgium

  Van Houtte, L. B. (Louis Benoit) (1810-1876)
136
15Hobbie, Dietrich G., Westerstede/Linswege, Germany

  Hobbie, Dietrich G.
126
16Leach, Dr. David G., North Madison, Ohio, USA

  Leach, Dr. David G.
118
17Stockman, M., Port Angeles, Washington, USA116
18Rothschild, Edmund Leopold de, Southampton, UK111
19Koster M. & Sons, Boskoop, Netherlands101
20Carlson's Gardens, (Bob & Janice Carlson), South Salem, New York, USA86
21Ito, Ihei, Register from 1692, Japan85
22Smith, W.D., Spring Grove, Pennsylvania, USA85
23Verschaffelt, A. (Alexander), Ghent, Belgium81
24Standish & Noble, Bagshot, Surrey, England80
25Mezitt, E.V., Weston Nurseries, Hopkinton, Massachusetts, USA78
26Guttormsen, W.L., Greenwood Gardens, Canby, Oregon, USA77
27Larson, H.L., Tacoma, Washington, USA77
28Dosser, D.J., Lower Wilmot, Tasmania, Australia76
29Whitney, William E., Brinnon, Washington, USA74
30Lem Halfdan, Seattle, Washington, USA72
31Henny, Rudolph, Brooks, Oregon, USA

  Henny, Rudolph (1909-1963)
70
32Smith, A.W., Niagara Falls, Ontario, Canada70
33Vines,R.C., Amelia Island, Florida, USA70
34Crown Estate Commissioners, Windsor, Berkshire, England67
35Veitch & Son, J., Royal Exotic Nurseries, Chelsea, London, England

  Veitch & Son, J. (1869-1914)
67
36Gartrell, R. D., Highland Farms, Black Mountain, North Carolina, USA66
37Magor, E.J.P., Lamellan, St. Tudy, Cornwall, England61
38Pride, O.S., Butler, Pennsylvania, USA60
39Hübbers, K-H., Kranenburg, Germany

  Hübbers, K-H.
59
40Loder, Sir Edmund, Horsham, Sussex, England58
41Slocock, Walter C., Goldsworth Nursery, Woking, UK58
42Kondratovičs, Rihard, Riga, Latvia

  Kondratovičs, Rihard
57
43Van de Ven K., Olinda, Victoria, Australia57
44Girard, P.E., Geneva, Ohio, USA56
45Knight & Perry, (J. Knight & T. A. Perry), Exotic Nursery, Chelsea, London, England55
46Ingram, C., Benenden, Kent, England53
47Lancaster, Ben, F., Lackamas Gardens, Camas, Washington, USA53
48Lofthouse, J.G., Vancouver, British Columbia, Canada53
49Greer, Harold E., Eugene, Oregon, USA52
50UK, No hybridizer registered, , 50
51Little, P.L., Piping Tree Gardens, Beaverdam, Virgina, USA47
52Shammarello, A.M, Euclid, Ohio, USA46
53Exbury, The Rothschild Estate, Hampshire, England45
54Hanger, F.E.W., RHS Garden, Wisley, Surrey, England45
55George A.F., Hydon Nursery, Godalming, Surrey, England

  George A.F.
44
56USDA, Department of Agriculture, Beltsville, Maryland, USA42
57Watson, E.M. Mrs. (Elsie), Kirkland, WA, USA

  Watson, E.M. Mrs. (Elsie)
42
58Noble, C., Standish & Noble, Bagshot, Surrey, England41
59Cowles, J.C., Stow, MA (superintendent of Dexter Estate 1959-1967), USA40
60Goheen. Dr. David, Camas, Washington, USA40
61Veitch & Sons, R., Exeter, Devon, England

  Veitch & Sons, R. (1823-1885)
40
62Clagett, W.L. (Buck), USA, Derwood, Maryland

  Clagett, W.L. (Buck)
39
63Harrison, E.G.W.W., Bodmin, Cornwall, England39
64Brandt, Lester E., Tacoma, Washington, USA38
65Cox, Peter A., Glendoick, Scotland38
66Loddiges, C. & Sons, Hackney, London, England38
67Nearing, G.G., Ramsey, NJ, USA

  Nearing, G.G.
37
68Stevenson, J.B., Ascot, Berkshire, England36
69Coolidge Rare Plant gardens, , 35
70Haerens, A., St. Amandsberg, Belgium35
71O'Rourke, H., Burnie, Tasmania, Australia35
72van Nes C. B . & Sons, Boskoop, Netherlands35
73Wada, K., Hakonea Nursery, Numazu, Japan35
74James Delbert W., Eugene, Oregon, USA34
75Australia, , 32
76Horlick, Sir James, Isle of Gigha, Scotland32
77Bobbink & Atkins, East Rutherford, New Jersey, USA31
78Doppel,J., Lenharstville, PA, USA31
79Fujioka, Frank, Whidbey Island, USA

  Fujioka, Frank
31
80Liebig, L.L., Dresden, Germany30
81Mangles James Henry, Valewood, England30
82Snell, G.L.S., Vireya Venue, Maleny, Queensland, Australia30
83Sunningdale Nursery, , 30
84Nagel, W. (Walter), Bretten, Baden, Germany29
85Pericat, A., , 29
86Reuthe, G. Ltd, Ightham, Kent, England29
87Schulz, O. (head-gardener, Royal Porcelain Factory), Berlin, Germany29
88Whitman, M.J., Wall, NJ, USA29
89Baumann, J., Ghent, Belgium28
90Bruns, J Nursery, Bad Zwischenahn, Germany28
91Jacob-Makoy, L., Liege/Luik, Belgium28
92Shapiro, B. & M., , 28
93Tolstead, W.L., Davis and Elkins College, Elkins, WV, USA28
94Vervaene, J., Ledeberg, near Ghent, Belgium28
95Weeks, C., Westgate Garden Nursery, Eureka, California, USA28
96Gill, Richards & Sons, Penryn, Cornwall, England27
97Amann,I.L., Bozman, Maryland, USA26
98Brueckner, J.B., Mississauga, Ontario, Canada26
99Davies, I, Ormskirk, Lancashire, England26
100Mehlquist, G.A.L, Storrs, Connecticut, USA26
101Parco Burcina, Pollone, Biella, Italy26
102Vuylsteke, C., , 26
103Adams-Acton, G.M, London, England25
104Boulter, V.J., , 25
105Firma Seidel, , 25
106Hardgrove, D.L., , 25
107Kerrigan, Howard, , 25
108Ring, T.L., Bellaire, Ohio, USA25
109Rollisson & Sons, W., Springfield Nursery, Upper Tooting, London, England25
110Smith, C.C. (Cecil), Newberg, Oregon, USA25
111Standish, J., Bagshot, Surrey, England25
112Sullivan, P., , 25
113Berg, Warren, Port Ludlow, Washington, USA

  Berg, Warren
24
114Greentree, M.E., , 24
115USA, , 24
116Yates, H.R., Frostburg, Maryland,, USA24
117Yeates, J.S., , 24
118Fetterhoff, W.M., Gibsonia, Pennsylvania, USA23
119Lelliott, T., Boronia, Victoria, Australia23
120Looye, Jack, Niagara on the Lake, Ontario, Canada23
121Arneson, Ivan & Robertha, Arneson Nursery, Canby, Oregon, USA

  Arneson, Ivan & Robertha
22
122Behring, R., St. Catharines, Ontario, Canada22
123Clarke, George.W., Portland Oregon, USA22
124Clarke, S.R., Borde Hill, West Sussex, England22
125Reich, W., , 22
126Reid, G.A., , 22
127Blumhardt, O. S., Koromiko Nurseries, Whangarei, New Zealand21
128Cole, D.J., , 21
129Cox, P.A. & K.N.E., Glendoick, Scotland21
130Guyens, H.J.A., , 21
131Rhein, W.L., Mechanicsburg, Pennsylvania, USA21
132Scott Arboretum, , 21
133Steyaert, A., , 21
134van Geert, C., , 21
135Boskoop, Research Center fo Arboreus Crops, Netherlands20
136Brockenbrough, E.C, Bellevue, Washington, USA20
137Elliott, James A., Astoria, Oregon, USA20
138Elliott, W., , 20
139Kehr, A.E., Hendersonville, North Carolina, USA20
140Kersbergen, Gebr., , 20
141Meltzer, H.L., Neustadt a/d Waldnaab, Germany20
142Rouse, J.L., Toorak, Victoria, Australia20
143Vaartnou, H., , 20
144Byls, J., , 19
145Cherry, R.J., , 19
146Chisholm, J.J., , 19
147Felix & Dijkhuis, Boskoop, Netherlands19
148Hachmann, Holger, , 19
149Lewis, G.D, Montpelier, Vermont, USA19
150Phetteplace, Dr. Carl H, Leaburg, Oregon, USA19
151Schroeder, H.R., , 19
152Seabrook, Cecil S., Tacoma, Washington, USA19
153Stead, E.F., , 19
154Stokes, W.E., , 19
155The Netherlands, hybridizer not registered, , 19
156Yavorsky, L., Freehold, New Jersey, USA19
157Clark, R.W., Olympia, Washington, USA18
158Crosfield, J. J., Embley Park, Romsey, Hampshire, UK18
159Haag, C.R. & V. (Velma), Brevard, NC, USA

  Haag, C.R. & V. (Velma)
18
160Haworth-Booth, M., Farall Nurseries, Surrey, England18
161Henderson & Co, Pineapple Nursery, London, England18
162Moser & Son, , 18
163New Zealand, , 18
164Newcomb,L.L., Snohomish, Washington, USA18
165Parks, J.B. (Joe), Dover, New Hampshire, USA18
166Peste, F., Shelton, Washington, USA18
167Pratt, M.C., , 18
168University of Canterbury, , 18
169Uosukainen, Marjatta, Dr. Mrs., Laukaa, Finland18
170Verschaffelt, J., Ghent, Belgium18
171Vuyk van Nes, , 18
172Williams, John Charles, Caerhays, Cornwall, England18
173Camellia Lodge Nursery, , 17
174Chugai Nursery Co., Kobe-city, Hyogo, Japan17
175Endtz, L.J. & Co, Boskoop, Netherlands17
176Gowen, J.R., , 17
177Harris, J.O., Lawrenceville, Georgia, USA17
178Hyde, W.G.T., , 17
179Ivery, J., , 17
180Kavka, B., Pruhonice, Czech Republic17
181Leroy, L., , 17
182Ostbo, E., Bellevue, Washington, USA17
183Seidel, T.J., Dresden, Germany17
184van Geert, A., , 17
185Vervaene, D., Ghent, Belgium17
186Childers, A.A & M., , 16
187Girard Nurseries, , 16
188Haerens & Wille, , 16
189Heneage-Vivian, A.W., , 16
190Coker, R.J. Mrs., , 15
191Drayson R.J.R, Wimborne, Dorset, England15
192Forster, R.R., , 15
193Haerens, J., , 15
194Hager, D., Hager Nurseries, Spotsylvania, Virginia, USA15
195Le Duigou, L., , 15
196McDonald, S., , 15
197Müller, J.B., Feldkrich bei Bollweiler, Germany

  Müller, J.B. (1813-1892)
15
198Ramsden, Sir John, Muncaster Castle, UK15
199Ring, G.W., , 15
200Robeneck, H., Westerstede, Germany15
201Thompson’s Nursery, Waldport, Oregon, USA15
202Van der Cruyssen, E., Gentbrugge, Belgium15
203Arends, G., Wuppertal, Germany14
204Bovee Robert M., Oswego, Oregon, USA14
205Consolini, A., Heritage Plantation, 14
206Herbert, C., , 14
207Hinerman, D.L., Ann Arbor, Michigan, USA14
208Moyles, E.W., Oakland, California, USA14
209Pince, R.T., , 14
210Stipe, W.A., Glynneden Garden, Greenbank, Washington, USA

  Stipe, W.A.
14
211Thacker, T.C., , 14
212van Geert, J., , 14
213Camelia Grove Nursery, , 13
214Colombel, Marc, Menez-Rohou, Fouesnant, France

  Colombel, Marc
13
215Digby, Lord, , 13
216Frisbie, L.F., Tacoma, Washington, USA13
217Gebr. Mardner, , 13
218Greer Gardens, , 13
219Greig, E,J. & M., Royston Nurseries, Vancouver Island, BC, Canada13
220Heursel, Jozef, Melle, Belgium13
221Millais, E.G., , 13
222Schneider, F., , 13
223Slonecker, H.J., Milwaukie, Oregon, USA13
224Weston Nurseries, , 13
225Anderson A.T. & S.A, , 12
226Brack, W. (Werner), St. James, New York, USA

  Brack, W. (Werner)
12
227Briggs Nursery, , 12
228Croux & Fils, Châtenay-Malabry, France12
229Glaser, K., , 12
230Klimavicz, J.F., , 12
231Loder, Sir Giles, Cuckfield, West Sussex, England

  Loder, Sir Giles
12
232Lowinsky T.H., Tittenhurst, Sunninghill, Bershire, UK12
233Oldham, B.E., , 12
234Stanton, D.B., Wollongong, New South Wales, Australia12
235Australian Rhododendron Society; Victoria, , 11
236Bulgin, L.W., , 11
237Dixon, G., , 11
238Fleischmann, C., Wiesmoor, Ostfriesland, Germany11
239Gordon, R.C, , 11
240Kew, Royal Botanical Gardens, Surrey, England11
241Knippenberg, Mrs. J. F., , 11
242Leroy, A., Angers, France11
243Methven, T. & Son, Edinburgh, Scotland11
244Minch, F., Puyallup, Washington, USA11
245Rinz, J., Firma S. Rinz, Frankfurt a/d Main, Germany11
246Rokujo, T., Tokyo, Japan11
247Scott, R.W., , 11
248Sommerville, E.A., , 11
249Stahnke, O., Sassenburg, Germany11
250Stöckman, E.A., Baumschule, Bad-Zwischenahn-Rostrup, Germany11
251Sullivan, N., Burnie, Tasmania, Australia11
252Cannon, C., , 10
253Clancy, B., , 10
254Firma C. Esveld, , 10
255Heinje, D., Jeddeloh, Germany10
256Henny, John, Brooks, Oregon, USA

  Henny, John (1909-1995)
10
257Hill, J.W. Mrs., , 10
258Holmes, A.G., , 10
259Huisman, T, Nijensleek, Netherlands10
260Loder, G.H., , 10
261May, J., , 10
262Mitchell, R.A., , 10
263Schultz, C., Hanau, Germany10
264Sligh, B., Lyttelton, New Zealand10
265Smet, L. de, , 10
266Van Nes, C.B., , 10
267Walther, C.J.H., , 10
268Waterer, A., Woking, Surrey, UK10
269Wright, A.O., Canby, Oregon, USA10
270Ahern, T. (Tom), Bethlehem, PA, USA9
271Barefield, G.E., Seattle, Washington, USA9
272Bramley, A.C., Kallista, Victoria, Australia9
273Bruns, W., , 9
274Furman, R.A., Brewster, MA, USA9
275Garbutt, T.A., , 9
276Germany, , 9
277Gustafson, R.H., West Windsor, New Jersey, USA9
278Hage W.C. & Co., Boskoop, Netherlands9
279Hardy, Maj. A.E., Hythe, Kent, UK9
280Holmsomback, O., , 9
281Hutchison, L.A., Mosgiel, Otago, New Zealand9
282Jordan, E.W., , 9
283Mayo, R.P., , 9
284Miyami-en Nursery, , 9
285Morlet, G., , 9
286Mossman, F. D., Vancouver, Washington, USA9
287Mugridge, C., Tremeirchion, St Asaph, Denbigshire Wales, UK9
288Nichols, I.C., , 9
289Phipps, H., Long Island, NY, USA9
290Ragan, W.A, , 9
291Smith, W. (gardener Earl of Liverpool), Kingston-upon-Thames, Surrey, England9
292Stanton, E.N., , 9
293Stewart, Robert, Springfield, Virginia, USA9
294Taylor, G., , 9
295Van Hecke, A., , 9
296Wright, H.R., Courtenay, British Columbia, Canada9
297Arends, W., Wuppertal-Ronsdorf, Germany8
298Barto, James, Eugene, Oregon, USA8
299Bristow, O.R., , 8
300Böhlje G. D., Westerstede, Germany8
301Dallière, A., , 8
302Fisher, L. Son & Sibray, , 8
303Hermann, E., , 8
304Holly Heath Nursery, , 8
305Jury F. M., , 8
306Koster & Sons, , 8
307Moynier, W.A., , 8
308Murcott, R., , 8
309Raustein, A.A., Holbrook, New York, USA8
310Rhodes, R.C., Gabriola Island, BC, Canada8
311Sander, C., , 8
312Smith, , 8
313Smith, B.M., Brittenhill Nursery, Kent, WA, USA8
314Verschaffelt, L, Royghem (near Ghent), Belgium8
315Vireya Venue, , 8
316Whitley & Osborn, , 8
317Wieting, J., Baumschulen, Gisselhorst/Westerstede, Germany8
318Wildfong, M., , 8
319Witherwick, G.T., , 8
320Workman, Y., Cape Coral, Florida, USA8
321Abbot, F.L., Bellows Fals, Vermont, USA7
322Amateis, Edmond, Brewster, New York, USA7
323Ambrosius, R., Dresden, Germany7
324Bovee & Mayo Rare Seed Co., , 7
325Davis, J.A., , 7
326de Cock, L., , 7
327Deerfield Nurseries, , 7
328Fortescue, L.S., , 7
329France, , 7
330Gheldolf, C., , 7
331Greenwood Gardens, , 7
332Jackson, T. & Son, Hampton Court, Middlesex, UK7
333Koster & Co., , 7
334Linden, J., , 7
335McQuire, J.F., Farnham, Surrey, England7
336Motzkau, , 7
337Newcomb, E.F., , 7
338O'Shannassy, J., , 7
339Paul, G., The Old Nurseries, Cheshunt, Hertfordshire, England7
340Pellet, H., University of Minnesota Landscape Arboretum, USA7
341Reiley, H.E., , 7
342Reuthe, W.S., , 7
343Roslyn Nursery, , 7
344Sanders, D., , 7
345Schulz, C., , 7
346Smith, B.M. & Mossman, F.D., , 7
347Swarthmore College, , 7
348Trautmann, C., Mowbray Gardens, Amelia, Ohio, USA7
349Van de Ven, H., , 7
350VEG Saatzucht Zierplanzen Erfurt, , 7
351von Martin, V., Rothenburg/Oberlausitz, Germany7
352Vossberg, P.D., Westbury Rose Co., Long Island, New York, USA7
353Waterer John, Sons & Crisp, Bagshot, Surrey, UK7
354Anderson, E. T. Mrs, Longview, Washington, USA6
355Arsen, F.A., Lindenhurst, Long Island, New York, USA6
356Belgium, , 6
357Birck, Jens, Kastrup, Denmark

  Birck, Jens
6
358Booth, J., , 6
359Boulter V.J. & Sons, , 6
360Brim, J.D., , 6
361Brooks, L.L., , 6
362Cary, E.A., , 6
363Childers, A.A., , 6
364Duncan & Davies, , 6
365Elmer, G. & T., , 6
366Felix, B.B.C., Felix & Dijkhuis, Boskoop, Netherlands6
367Galle, F.C., , 6
368Garrett, J. & D., , 6
369Genzel, U., Westerstede, Germany6
370Gerdeman, J.W., Yachats, Oregon, USA6
371Gertnere, D., , 6
372Grace, G.D., , 6
373Griswold, Mrs. W.L. (Doris), Krikland, WA, USA6
374Hesse, H., , 6
375Johnstone G.H., Trewithin, Cornwall, England6
376Jury, M., , 6
377Kelmscott Azalea Gardens, , 6
378Kint Brothers, M & J, Lochristi, Belgium6
379Koppeschaar, W.F., , 6
380Kyoma Yokota Nursery, , 6
381Lady Loder, , 6
382Langdon, G., , 6
383Laurentius, H., , 6
384Michener, M.W., , 6
385New Zealand Rhododendron Association, , 6
386Ogdon, B.J., , 6
387Parsons, S.B. & Sons Co., Long Island, New York, USA6
388Research Station for Woody Nursery Crops, Boskoop, Netherlands6
389Robinson, M.L.A., Forest Row, East Sussex, England

  Robinson, M.L.A.
6
390Rose, J., , 6
391Russell, J.P.C., Fife, Scotland6
392Sanders, George Merle, Roseburg, Oregon, USA6
393Schild, J.E., Hixson, Tennessee, USA6
394Seidel, T.J.H., Dresden, Germany

  Seidel, T.J.H. (1833-1896)
6
395Skinner, H.T., , 6
396Slocock Nurseries, , 6
397Smet-Duvivier. L. de, St. Amandsberg, Belgium6
398Street, F.J., Heathermead Nursery, Woking, Surrey, England6
399Thornton, J.T., , 6
400Van Nes, Adriaan, Boskoop, Netherlands6
401van Nes, P., , 6
402van Veen, T. (includes Sr. & Junior), Portland, Oregon, USA6
403Wallace, Don S., McKinleyville, California, USA6
404Wezelenburg & Son, , 6
405Wille, C.J. & Co, , 6
406Williams, Percival D., St Keverne, Cornwall, England6
407Wister, J.C., Swarthmore, PA, USA6
408Zhang, Chang Qin, Kunming, China

  Zhang, Chang Qin
6
409Bohlken, H, Edewecht, Germany5
410Bolitho, Sir Edward, , 5
411Brown, C.E., , 5
412Caperci, J.F., , 5
413de Meyer, E., , 5
414den Ouden & Son, , 5
415Dvořák, J., , 5
416Ford, J.E., , 5
417Fraser, G., Vancouver Island, BC, Canada5
418Frei, H., Wildensbuch, Switzerland5
419Greig, E.J., Royston Nurseries, Vancouver Island, BC, Canada5
420Hardy, G.A., , 5
421Heller, C.G., , 5
422Henny & Wennekamp, Salem, Oregon, USA5
423Hooftman, H.J., , 5
424Hyatt, D.W. (Don), McLean, VI, USA

  Hyatt, D.W. (Don)
5
425Kersey, R.J., , 5
426King, L.M. Mrs., Wanganui, New Zealand5
427Laxdall, S. Mrs, , 5
428Lee, J. & C., Hammersmith, London, England5
429Lewis, D., , 5
430Lyons, M.W., Eugene, Oregon, USA5
431MacMullan, D. (Dennis), Hamburg, Pennsylvania, USA5
432Mauritsen, Richard, Kent, Washington, USA5
433Millais Nurseries, , 5
434Mustila Arboretum, , 5
435Nelson, B., Squamish, Washington, USA5
436North Carolina State University, , 5
437Parmenter, D., , 5
438Pennington, R.W., , 5
439Pukeiti-Rhododendron Trust, , 5
440Rosenthal, J., Jamaica, NY, USA5
441Saint-Jalm, J.F., , 5
442Schick, P., , 5
443Smith, S., Gardener to R.B. Fox, Penjerrick, Cornwall, England5
444Starling, , 5
445Stewart, D. & Son, , 5
446Sumner, M.H. & Mrs. F, San Francisco, California, USA5
447Swaythling, Lord, Bridley Manor, Worplesdon, Surrey, England5
448Teese A.J., Monbulk, Voctoria, Australia5
449van Herzeele Nurseries, , 5
450Van Lancker, M., Melle - Reseach Station for Ornamental Plant Growing, Belgium5
451Vermeulen & Sons, J., , 5
452Waddington, C.R.W., , 5
453Waghorn, F.R., , 5
454White, G.H., , 5
455White, H., Sunningdale, UK5
456Winberg, John, D., , 5
457Woodard, G. (George) (superintendent Phipps Estate), Westbury, NY, USA

  Woodard, G. (George) (superintendent Phipps Estate)
5
458Anne, Countess of Rosse and NT (Nymans), , 4
459Arblaster, G., Eyemouth, Berwickshire, Scotland4
460Bagoly, Lewis, Stafford, PA, USA4
461Baker, G.L., Astoria, Oregon, USA4
462Baldanza, S., Benton Harbor, Michigan, USA4
463Baldsiefen, Warren, Bellvale, New York, USA4
464Beasley, W.G., Transplant Nursery, Lavonia, Georgia, USA4
465Becales, Joe, Glen Mills Pennsylvania, USA4
466Blansit, N. (Nolan), Cottage Grove, Oregon, USA

  Blansit, N. (Nolan)
4
467Boddaert, B., , 4
468Bones, Dan, Florence, Oregon, USA4
469Bosley, P.R., Bosley Nursery Co., Mentor, Ohio, USA4
470Bovees Nursery, , 4
471Bull, W., , 4
472Burns, R.E., Vida, OR, USA4
473Campbell, B.W., Ravensbourne, Dunedin, New Zealand4
474Cavender, R.W., Red's Rhodies, Sherwood, Oregon, USA4
475Craig, D.L., Kentville, Nova Scotia, Canada4
476de Clercq, L., , 4
477Druecker, J.S., Fort Bragg, CA, USA4
478Dunedin Rhododendron Group, , 4
479Eichelser, John E., Olympia, Washington, USA4
480Fratelli Rovelli, , 4
481Freimann, Lev. Mrs., Bellingham, Washington, USA4
482Goodrich, J.M. (Jane) & Ray, Vienna, Virginia, USA

  Goodrich, J.M. (Jane) & Ray (-2009)
4
483Griswold, G., Kirkland, WA, USA4
484Hager Nurseries, , 4
485Headfort, Lord, Kells, Meath, Ireland4
486Hershey's Azalea Farm, , 4
487Hill, W., Poulsbo, Washington, USA4
488Hilliers, , 4
489Hinton, D.N., , 4
490Horstman, G., , 4
491Hydon Nurseries, , 4
492Janeck, Kenneth, Tacoma, Washington, USA4
493Johnson, D.B., , 4
494Kirk, E., , 4
495Kluis Antony, Boskoop, Netherlands4
496Kuwano, T., , 4
497Kyndl, J., , 4
498Lefevre, , 4
499Matouš, J, , 4
500Means, R.L., , 4
501Müller, Heinz, , 4
502National Trust for Scotland, , 4
503Oudin, Lisieux, France4
504Petrick, C., , 4
505Pilkington, Mrs. E., , 4
506Player, L. M., Fayetteville, North Carolina, USA4
507Rogers, W.H. & Son, , 4
508Rose, F.J., , 4
509Scholz, J., , 4
510Schram, B., , 4
511Settle, P.T., , 4
512Smith, P., , 4
513Steele, Captain Richard, M., , 4
514Stephens, J.F. Mrs & Mr, , 4
515Stevenson, Mrs. R.M., , 4
516Stirling-Maxwell, Sir John, , 4
517Streck, W., , 4
518Swain, G.S., Researh Station, Kentville, Nova Scotia, Canada4
519Taylor, G.H., , 4
520The Bovees Nursery, , 4
521Thompson, W. & M., , 4
522Ticknor, R.L., , 4
523Towe, L.C., , 4
524Truffaut, A., , 4
525University of Minnesota, , 4
526van Acker, P.B., , 4
527Van Gele, J.C. & Son, , 4
528Varnadoe, A.C., , 4
529Walter Allan Nursery, , 4
530Weagle, J.K., , 4
531Whitaker W.J., , 4
532Williams, B. S., , 4
533Williams, F.J., , 4
534Bacher, J.G., Portland, Oregon, USA3
535Backhus, A.W., Edewecht-Kleefeld, Germany3
536Barbier & Co, Orleans, France3
537Begg, L., , 3
538Belder de, R., , 3
539Berna Park Nurseries, , 3
540Bertin, Versailles, France3
541Bier, G. J. & Sons, Melle, Belgium3
542Blake, F.S. & G.C., , 3
543Bowman, J. & R., , 3
544Briggs, B.T., , 3
545Brooks, A.R., Concord, Massachusetts, USA3
546Bunnell, J.O., , 3
547Byrkit, M.E., , 3
548Caldwell, H.A. Jr., , 3
549Caledonia Nursery, , 3
550Carmichael (gardener to Prince of Wales), Sundringham, Norfolk, UK3
551Carter's, , 3
552Clibrans Nursery, , 3
553Cox, E.H.M., , 3
554Croux, G., , 3
555Cullinane, M.D., , 3
556Cunningham, , 3
557Danneil, H.-J, , Germany3
558Davidson's Nurseries, , 3
559Demay, H., , 3
560Drake, E. F., Olympic Peninsula, WA, USA3
561Dürre, F.W., Westerstede/Linswege, Germany3
562Edinburgh, R.B.G., , 3
563Esch, B., Portland, Oregon, USA3
564Etabl. Linden, , 3
565Evans, J.B., Budock, Falmouth, Cornwall, England3
566Evans, J.P., , 3
567Folding, J., , 3
568Furman, F., Bridgewater, NJ, USA3
569Gijselinck, A., , 3
570Glendoick Gardens, , 3
571Glenoire Nursery, , 3
572Gordon, I.F., Utiku, Taihape, New Zealand3
573Gordon, Lady Adam, , 3
574Gorer, G., Haywards Heath, West Sussex, England3
575Hall, M.E., Bridgewater, Massachussetts, USA3
576Halligan, P., , 3
577Hardijzer W. H., Boskoop, Netherlands3
578Harmsen, G., , 3
579Hatori, M., , 3
580Hayes, I.A., , 3
581Hazlewood Bros., , 3
582Hess, N.E., , 3
583Holden, A.J., , 3
584Holland B., , New Zealand3
585Holmes Nurseries, , 3
586ISRIA, , 3
587Johnson, A.P., , 3
588Jury, L.E., New Plymouth, New Zealand3
589Kesterson, G.H., , 3
590Korth, A.C., Soquel, California, USA3
591Koster, D.A., , 3
592Lehmann, C.A., Klampenborg, Denmark

  Lehmann, C.A.
3
593Leonard, , 3
594Lindley, J., , 3
595Lovegrove, F., , 3
596Magor, E.W.M., , 3
597Malone, H.R., , 3
598Marshy Point Nursery, , 3
599Mason, , 3
600Mayer, R., , 3
601Mayo, R.P. Nurseries, , 3
602McCulloch, S., Olympia, WA, USA3
603McKeefer, J.R., , 3
604Meerkerk, A., Meerkerk Rhododendrons Gardens, Greenbank, Washington, USA3
605Messel, L.C.R., , 3
606Minahan, J.F., , 3
607Minnesota Landscape Arboretum, , 3
608Monrovia Nursery, , 3
609Motzkau, H.W., , 3
610Moyers, R., , 3
611Newberry, P., , 3
612Ono, K., , 3
613Oosthoek, P.J.C. & Co, , 3
614Ouden den H. & Son, , 3
615Parker, E.K., , 3
616Paul, W. & Son, , 3
617Pearce, , 3
618Pynaert, E., , 3
619Rasmussen, Mogens, Gedser, Denmark3
620Reese, W.A., , 3
621Reid, C., , 3
622Robertson, W., Auburn, WA, USA3
623Royal Botanical Garden Edinburgh, , 3
624Royal Botanical Gardens, Wakehurst, , 3
625Sablière, C. de la, , 3
626Saperstein, S., , Australia3
627Sawada, K., , 3
628Schmalscheidt, W., , 3
629Schumacher, U., , 3
630Seleger, R., Adliswil, Switzerland3
631Shaw, J., , 3
632Sifferman, Karl I., Seattle, Washington, USA3
633Smith, J.S., , 3
634Stiborek, Z., , 3
635Stockman M. & H., , 3
636Swenson, W.J., Eugene, Oregon, USA3
637Tanggard, M., , 3
638Todman, , 3
639Towe, L.C. & Anastos, N., , 3
640Transplant Nursery, , 3
641Trillon, , 3
642van Noordt, G., , 3
643van Noordt, P. & Sons, , 3
644Waldman, P.M., , 3
645Weesjes, E. Mrs, , 3
646Wemken, A., , 3
647Wilding, E. H., Stoke Poges, Buckinghamshire, UK3
648Williams, C., , 3
649Williams, C. & Michael, C., , 3
650Wiseman, P., , 3
651Witt, , 3
652Wright, A. A., , 3
653Wyrens, R.G., , 3
654Allen, E.F., , 2
655Anderson, R.L., Eureka, California, USA2
656Aunsbjorn, B., , 2
657Bahnson, E.R., Winston-Salem, North Carolina, USA2
658Baker, H.S., Longview, Washington, USA2
659Balch, R.W., Parks & Garden Dept., Dunedin, New Zealand2
660Barber, , 2
661Beck, H.P. Mrs., , 2
662Bernd Jackst, Bockhorn, Germany2
663Berry, Mrs A.C.U., , 2
664Betteridge, D., , 2
665Biltmore Gardens, Asheville. North Carolina, USA2
666Blaauw & Co., Boskoop, Netherlands2
667Blough, R.L., , 2
668Boese, G., , 2
669Bondita, R.J., , 2
670Boswell, E.D. Mrs, , 2
671Bowhan, Tom and Emma, Eugene, USA2
672Braafladt, , 2
673Burnes, F.E. (Frances), Vida, OR, USA2
674Caperci, Mr & Mrs J. F., , 2
675Carter, R., , 2
676Charozé, , 2
677Charvet, , 2
678Clark, B., , USA2
679Cockeram, Eugene, , 2
680Coleman, S.D., , 2
681Coners, G., , 2
682Cornell, P.B., , 2
683Cox, K.N.E., Glendoick, Scotland2
684Craig-Mooney, A., Buckland Monachorum, Devon, England2
685Craven, L.A., , 2
686Cross J.E., , 2
687Cuthbert, Messrs, , 2
688Cutten, R., , 2
689de Cock, E., , 2
690de Cock, J. & Soeur, , 2
691de Coninck, F., , 2
692de Kneef, J., , 2
693Deckert, E., , 2
694Disney, J., , 2
695Domoto, T., , 2
696Early, S.C., , 2
697Egan, E.K., , 2
698Eisoldt, R., , 2
699Elliot, Jeffrey, Christchurch, New Zealand2
700Embley Park, (J.J. Crossfield), Hampshire, England2
701Evans, J.M.J., , 2
702Everitt, S.A, Huntington, Long Island, New York, USA2
703Faragher, C., , 2
704Fawcett, C.P., Tacoma, Washington, USA2
705Firma S. Rinz, , 2
706Fitzburg, A.R., , 2
707Foster, H.L., , 2
708Fowle, H., , 2
709Fox, R.B., Penjerrick, Cornwall, UK2
710France, L., , 2
711Fraser, , 2
712Fratelli Savioli, , 2
713Frets, C. & Sons, , 2
714Fuller, H. & S., , 2
715Gehnrich, H.C., , 2
716George, R.E., Sammamish, Washington, USA2
717Gillies, G, , 2
718Glennie, W.E., , 2
719Grant, Mrs. G., Orton, Temuka, New Zealand2
720Griswold, D.A., , 2
721Guérin, M, , 2
722Haerens, J.B. & Sons, , 2
723Hancock, L, , 2
724Hansen Ruth, Portland Oregon, USA2
725Harris, A., , 2
726Harris, J., , 2
727Harrison's Nursery, , 2
728Harrison, R.H. Mrs., , 2
729Hartl, O., , 2
730Herbert, Honourable & Reverend W., Wetherby, Yorkshire, England2
731Hershey, R., , 2
732Higginbothom, J.R., , 2
733Hines Nurseries, , 2
734Holden, P., , 2
735Hollowell, E.A., , 2
736Hooper, J.D., , 2
737Howells, A., , 2
738Huber, R.R., , 2
739Huthnance, G., , 2
740Imrie, S.T., , 2
741Jelínek, J., , 2
742Jones, K., Fort Bragg, CA, USA2
743Judson, , 2
744Kellygreen Rhododendron Nursery, , 2
745Kentville Research Station, , 2
746Kerkhoff, Betrieb, , 2
747King, R., , 2
748Kingdon Ward, , 2
749Konrad, Dr. G. Mark, Sewickley, PA, USA2
750Korn, R., Renton, Washington, USA2
751Koster, P.M., , 2
752Kuhn, H., Muttontown, New York, USA2
753La Bar's Nursery, , 2
754Lane, H. & Son, , 2
755Loon R. van, , 2
756Love, M.V., , 2
757Lowinsky, A.M., , 2
758MacDonald, R., , 2
759Mackay, M., , 2
760Mackenzie, E. Mrs, , 2
761Manenica, Mrs A., Aberdeen, Washington, USA2
762Marcellus, J.A, , 2
763Mardner, Gebr., Mainz, Germany2
764Martin, A,C, , 2
765Martin, W., , 2
766Maupoil, C., , 2
767Maxwell, Sir John, , 2
768McClure, W., , 2
769McGuire, J. J. (dept. Plant Sciences, RI University), Kingston, Rhode Island, USA2
770McNew, C. (Charles), Kelso, WA, USA

  McNew, C. (Charles)
2
771Meyer, R. de, Lochristi, Belgium2
772Mezitt, R.W., , 2
773Milfield, R.M., , 2
774Moffat, R, , 2
775Mulligan, B.O., , 2
776Murray, E., Port Angeles, Washington, USA2
777Müssig, K., , 2
778Nomblot-Bruneau, , 2
779Nosbüsch, H., , 2
780Ottolander, J. & Hooftman, , 2
781Pender, D. Jr,, , 2
782Potter, B.C., , 2
783Preil, W. & Ebbinghaus, R., , 2
784Pryor, R.L., , 2
785Rhododendron Species Foundation, , 2
786Roehrs, J., , 2
787Ronken, H, , 2
788Rose, H.D., , 2
789Royal Horticultural Society, , 2
790Savill Gardens, , 2
791Schannen, H.A. (Hank) (owner of RareFind Nursery in Jackson NJ), Princeton, NJ, USA

  Schannen, H.A. (Hank) (owner of RareFind Nursery in Jackson NJ) (1938-2009)
2
792Schulz, M., , 2
793Schumacher, F.W., , 2
794Scott, R.L., , 2
795Serbin, A.F., , 2
796Short, H.A., , 2
797Smith, C (Clint), Sumner, Washington, USA2
798Smith, E. E., , 2
799Smith, James & Sons, Darley Dale Nurseries, Matlock, Derbyshire, England, UK2
800Smitherman, R.O., Auburn, Alabama, USA2
801Sorensen-Smith, L., , 2
802Sorenson, S.E., , 2
803Southerland, Stan B., Chapel Hill, NC, USA2
804Spae, F., , 2
805Stair, Lord, Lochinch Castle, Stranraer, Scotland2
806Stelzner, , 2
807Strybing Arboretum, , 2
808Tatum, T., Portland, Oregon, USA2
809Terai, K, , 2
810Thompson, London, , 2
811Thompson, R. W, Waldport, Oregon, USA2
812Tietjens, M., , 2
813Todd, Jr, J.R., , 2
814van Gelderen, D.M., , 2
815van Loon, R., , 2
816Van Oost, H, , 2
817van Tol, J.C., , 2
818van Wilgen, , 2
819Verhaeghe, R. & Sons, , 2
820Verleeuwen, J., , 2
821Vuyk, T. & Son, , 2
822Wagner, D., , 2
823Walbrecht, , 2
824Wallace, , 2
825Walton's Nurseries, , 2
826Ward, R.W., , 2
827Weber, Edwin O., Seattle, Washington, USA2
828Weight, , 2
829Weiskittel, H.C., , 2
830Westfall, Q.R., , 2
831Wheeldon, T.F., Richmond, Virginia, USA2
832Williams, A.M., , 2
833Withers, R.M., , 2
834Wuyts, O.F., , 2
835Wüstemeyer, W., , 2
836Yokohama Nursery, , 2
837Young, M., , 2
838Šesták, J., , 2
839Aarts, , Netherlands1
840Aasland Nursery, , 1
841Abbey G., Eltham, London, gardener of Dr. Stocker1
842Adams, H., , 1
843Adams, N., , 1
844Alberts, G.J., , 1
845Anastos, N., , 1
846Anderson, E., , 1
847André, E. F., , 1
848Angelini, A., , 1
849Argent, G., , 1
850Arnold Arboretum, Jamaica Plain, Boston, MA, USA1
851Askjaer, S.A., Spøttrup, Denmark1
852Aunsbjorn, T., , 1
853Baker, , 1
854Ballalheannagh Gardens, , 1
855Banks, W.L. & R.A., , 1
856Baron de Pronay, , 1
857Basford, J.S., , 1
858Bauer, , 1
859Bauers, K. & Getlina, D., , 1
860Bawden, H.E., , 1
861Beasley, J., , 1
862Beekman, E., , 1
863Begg, K., , 1
864Behrens, A., , 1
865Berg, Harold, Rochester, MI, USA1
866Berg, J., Bremen, Germany1
867Bergman, W. R., , 1
868Bill, H., Enosburg, Vermont, USA1
869Black, M., , 1
870Blaney, L.T., Oregon State University, Oregon, USA1
871Bledsoe, C.W., , 1
872Blough, G.L. & M.A., , 1
873Boone, D., , 1
874Boot & Co, Fa., , 1
875Boscawen, J.T. Hon., , 1
876Boswells Nurseries, , 1
877Boulter, F., , 1
878Boursault, , 1
879Bowers, C.G., , 1
880Bowman, P.J., , 1
881Bowman, R.F., , 1
882Brady, Gene, Washington, USA1
883Brandt, C.R., , 1
884Braukmann. W., , 1
885Brechtbill Nursery, Eugene, Oregon, USA1
886Brothers, P.G., , 1
887Broughton, gardener to Lee of Hammersmith. London, England1
888Brouse, F.W., , 1
889Brown's Nursery, , 1
890Brown, P., , 1
891Brugge, , 1
892Bruns, Joha, Bad-Zwischenhan, Germany1
893Bump, F., , 1
894Bunge, , 1
895Burlingame, C.R., , 1
896Caddy, N. Mrs, , 1
897Cagle, D.J., , 1
898Caldecot & Claremont Nursery, , 1
899California Camellia Gardens, San Fernando, CA, USA1
900Callaway Gardens, , 1
901Canada, , 1
902Case, L.C., , 1
903Cattaneo Vivai, , 1
904Cavadini, L., , 1
905Cels, , 1
906Chandler, B. & Son, , 1
907Chandler, E.E., , 1
908Charbet, G., Fort Bragg, CA, USA1
909Cheal, J. & Sons, , 1
910China, , 1
911Cieplucha, J., , Poland1
912Cisney, M.E., , 1
913Clarke, E. Mrs., , 1
914Clarke, S. (Steve), Clarke Nurseries, Long Beach, WA, USA1
915Clausen, , 1
916Clay, Les & Bev, Langley, BC, Canada1
917Clement, F., , 1
918Clyde Smith, J., , 1
919Coates, A., , 1
920Coleman, J.H., , 1
921Colville, Col. N.R., Launceston, Cornwall, UK1
922Comersford Nursery, , 1
923Congreve, A., , 1
924Constantini, C., , 1
925Conway, , 1
926Cook, A.R., , 1
927Cook, Alleyne, , 1
928Corbin, Dr. William L., Yamhill, Portland, Oregon, USA1
929Costantini, C., , 1
930Cowan, J.M., , 1
931Crober, L.G., , 1
932Cruttwell, N.E.G., Goroka, Papua New Guinea1
933Cunic, Jane, Pittsburg, PA, USA1
934Currie, R., , 1
935Dale, W.A., Sidney, BC, Canada1
936Dalibon, , 1
937Darney, Charles O. III, Parkersburg, PA, USA1
938David, L. Mrs, , 1
939Davies of Ormskirk, Lancashire, UK1
940Davies, Joe, Sumner, Washington, USA1
941de Clerck d'Olsene, , 1
942de Coninck-Dervaes, L., , 1
943de Meulemeester, M., , 1
944de Reuse, A., , 1
945de Strycker, J., , 1
946de Waele, F., , Belgium1
947de Witte, , 1
948Delaware Valley Nursery, , 1
949Delmotte, J., , 1
950Deppiesse, , 1
951Desfossé-Thuillier Fils, , 1
952DeWilde, R., , 1
953Dexter Study Group, , 1
954Dicksons, , 1
955Dobbs, , 1
956Dodd, W., , 1
957Domschke, O, Cölln bei Bautzen, Germany1
958Dover Nursery, Sandy, Oregon, USA1
959Dowry, G. H., , 1
960Dreer, H.A., , 1
961Dresden Botanic Garden, , 1
962Drewry, J.H., , 1
963Dryden, K.N. Mrs, , 1
964Dunleath, Lord, , 1
965Earl of Morley, , 1
966Eaton, G., , 1
967Edwards, A.J.B., , 1
968Emerson, G.C, , 1
969Endsleigh Estate, , 1
970Eschrich, G., , 1
971Evans Edinburgh, , 1
972Farwell, E.E., , 1
973Faulk, P., Tacoma, Washington, USA1
974Faull, J., , 1
975Fawcett, T.B., , 1
976Firma S. Rinz, , 1
977Firma S. Rinz, , 1
978Flavell, Richard, New Haven, USA1
979Flora Markeeta Nursery, , 1
980Forster, O., Lehenhof, Austria1
981Fortie, B., Ghent, Belgium1
982Fortune, R., , 1
983Foster, M.C., , 1
984Francoisi Brothers, , 1
985Frederick, , 1
986Frei-Glaus, E. & H., , 1
987Fretz, L., , 1
988Fromow & Sons, W., , 1
989Frost, , 1
990Gallici, H., , 1
991Gambril, , 1
992Gardeners of Villa Pallavicino, , 1
993Gardeners of Villa Taranto, , 1
994Gatke, R.M., , 1
995Gauntlett & Co, , 1
996George, E.W., , 1
997Geraud, M., , 1
998Glass, Mrs P., , USA1
999Glenn Dale, , 1
1000Golden, H., , 1
1001Gordner, D., Puyallop, Washington, USA1
1002Grall, R., , 1
1003Granston, Mrs. R, , 1
1004Greer, E. Mrs, Eugene, Oregon, USA1
1005Gregory, R.M., , 1
1006Griswold Nursery, Kirkland, WA, USA1
1007Groebel, , 1
1008Grothaus, Mrs M., , 1
1009Guldemond, , 1
1010Gunkel, , 1
1011H. Robenek & D.G.Hobbie, , 1
1012Haerens, Gebr. (August & Jan), Somergem, Belgium1
1013Haerens, W., , 1
1014Hagen, J.C., Boskoop, Netherlands1
1015Hahn, Louis & Sons, , 1
1016Haig, C., , 1
1017Hall, E.G., , 1
1018Hall, S., , 1
1019Halopé, F, , 1
1020Hambro, R.O., , 1
1021Hamilton, I., , 1
1022Hamilton, W.F., , 1
1023Hammond Nursery, Arlington, Washington, USA1
1024Hanke, W., , 1
1025Hansen, Svend, Kernhuset, Denmark1
1026Harmon, R., , 1
1027Harrington, R., , 1
1028Harris, J.D., , 1
1029Harris, J.G.E., , 1
1030Harvey, M.J., , 1
1031Harvey, Mr & Mrs F.W., , 1
1032Haverfield, J., , 1
1033Heal, H., , 1
1034Heft, L., , 1
1035Hellebuyck, L., , 1
1036Hesse, H.A., , 1
1037Hicklin, C., , 1
1038Hiers, C. J., Auburn, Alabama, USA1
1039Higashi Nursery, , 1
1040Highclere, , 1
1041Hilscher, S., , 1
1042Holford, Sir George, , 1
1043Holland, S., , 1
1044Holman, N.T., , 1
1045Holmes, A.G. Mr & Mrs, , 1
1046Holz H.-P., , 1
1047Hoogendoorn Nurseries, , 1
1048Horlick, Sir John, , 1
1049Horner, W.L., , 1
1050Horsborough, L., , 1
1051Hovey, C.M., , 1
1052Hughes, M., , 1
1053Hume, H. H., , 1
1054Hunnewell, , 1
1055Huntingdale Nursery, , 1
1056Ishii, F., , 1
1057Ivens, , 1
1058Iveson, , 1
1059Iwayama, S., , 1
1060Jack, R.H.L., , 1
1061Jacobs, D., , 1
1062James, R. Mrs, , 1
1063Jamin & Durand, , 1
1064Johnston, J., , 1
1065Jordan, H, , 1
1066Jusa, , 1
1067Kaiser, E.L., , 1
1068Kasai, K, , 1
1069Kawazu, N. Mrs., , 1
1070Kerkhoff, W., , 1
1071Kern, W, Woodlyn, Pennsylvavia, USA1
1072King, E., , 1
1073King, S.M., , 1
1074Kinghorn, F.R., , 1
1075Klein, , 1
1076Kline, Howard R, Newmanstwon, PA, USA1
1077Knights, Tony, , 1
1078Knorr, B., , 1
1079Knuttel, A.J., , 1
1080Kramer, , 1
1081Krempasky, G., , USA1
1082Kristensen, Palle, , 1
1083Kromhout & Co, , 1
1084Kruschke, F. Nursery, Clackamas, Oregon, USA1
1085Kruse, R., , 1
1086Lady Marion Philips, , 1
1087Laird, R.B. & Sons, , 1
1088Landauer, H., , 1
1089Lane, M.J., , 1
1090Lang, T. & Co, , 1
1091Langton, E., , 1
1092Lauer, M., , 1
1093Laurel Lake, , 1
1094Lawton, L.H., , 1
1095Layritz Nursery, , 1
1096Legendre, J., , 1
1097Leonardslee Gardens Nursery, , 1
1098Lesèble, , 1
1099Llewelyn, T.D., , 1
1100Lock, J.A.N., , 1
1101Lockhart, R.D., Aberdeen, Scotland1
1102Loddiges, , 1
1103Lohbrunner, Edmund D., , USA1
1104Lohse, Dirk, , 1
1105Luscombe. T., , 1
1106Lyons, R. (Ruth), Oregon, USA1
1107Lüttge, G, , 1
1108Mackoy, J, , 1
1109Maehara, H., , 1
1110Magness, W.R., Brandon, Oregon, USA1
1111Makino, T., , 1
1112Maloney, F. Mrs., Seattle, Washington, USA1
1113Mangles, , 1
1114Manten, H., , 1
1115Marchant, H., , 1
1116Marchant, W.J., , 1
1117Markeeta Nursery, , 1
1118Matlack, M. B., , 1
1119McBrier, B.P., , 1
1120McClure, D.K., , 1
1121McCormack, A., , 1
1122McDonald, S.F., Hampton, Virginia, USA1
1123McMillan, A., , 1
1124McMurry, , 1
1125Mensing, L., , 1
1126Mesman, C., , 1
1127Metcalfe, S.K., , 1
1128Metselaar, A.C.H., , 1
1129Meulemeester, J. de, , 1
1130Meyer, H., Barmold-Baumschulen, Uchte, Germany1
1131Mezey de, A., , 1
1132Michael, Charles, Gorran, Cornwall, England1
1133Miller, , 1
1134Miller, G.T., , 1
1135Mittendorf, , 1
1136Moench, , 1
1137Moerloose, , 1
1138Moore, K., , 1
1139Morel, , 1
1140Moreux, , 1
1141Moss, W., , 1
1142Mossholder, R, , 1
1143Mraw, L.B., , 1
1144Myers, G., , 1
1145Myers, W.A., , 1
1146Nellie Kelly Nurseries, , 1
1147Ness Botanic Gardens, , 1
1148No IRRC registration data, , for hybridiser1
1149Norman, F.S., , 1
1150North, Eltham Park, Kent, England, UK1
1151Nosal, M., , 1
1152Ohita Prefecture, , 1
1153Oleri, M. Mrs, , 1
1154Olinda Nurseries, , 1
1155Oliver & Simson Nurseries, , 1
1156Olson, J., Fall Creek, Oregon, USA1
1157Ooshima, H., , 1
1158Ostler, , 1
1159Pacific Island Nursery, , 1
1160Paelinck Bros, , 1
1161Panhandle Nursery, , 1
1162Parker, , 1
1163Parker Smith, Santa Monica, CA, USA1
1164Parsons, H.J., , 1
1165Patterson, C., , 1
1166Pedersen, A & A, Pedersen's nursery, Wayne, New Yersey, USA1
1167Pedersen, Henning, , 1
1168Pedigo, L., , 1
1169Pennington-Ramsden, Sir, , 1
1170Perrott, E.B., , 1
1171Perry, R.I. & Stilwell, M., , 1
1172Peterson, N.C. & Stabler, D., , 1
1173Petton, J.-F, , 1
1174Philips, Kevin, , 1
1175Pierce, Lawrence, Seattle, Washington, USA1
1176Pike, R.B., , 1
1177Preston, Mrs., , 1
1178Price, G., , 1
1179Prizeman, G.J.N, , 1
1180Pushepetappa Gardens, , 1
1181Quihou, F., , 1
1182Rannacher, K., , 1
1183Rare Find Nursery, , 1
1184Read, F., , 1
1185Richards, C.W., , 1
1186Richter, L. R., Dresden, Germany1
1187Roberts, A.N., Corvallis, Oregon, USA1
1188Rogers, Sevenoaks, Kent, UK1
1189Round, J., , 1
1190Royal Botanical Garden Kew, , 1
1191Russell, , 1
1192Ruys, J.D., Moerheim Nursery, Dedemsvaart, Netherlands1
1193Sagemüller, W., Edewecht, Germany1
1194Saitõ, T., , 1
1195Saito, S., , 1
1196Sanders, Graham, Christchurch, New Zealand1
1197Sanders, S & C, Bethesda, Maryland, USA1
1198Sandwich Club, , 1
1199Sather, G & Mrs A., , 1
1200Sauvage, , 1
1201Schamenek, J., , 1
1202Schepens, M. G., , 1
1203Schepens, P, Zaffelare, Belgium1
1204Schmick, H, , 1
1205Schoneman, R., , 1
1206Schröter, , 1
1207Schrijver, A. de, , 1
1208Schäme, J, , 1
1209Scrase-Dickins, C.R., , 1
1210Seghers, Fr, , 1
1211Sénéclause, L., , 1
1212Serle, L., , 1
1213Shellenberger, Rick, Snohomish, WA, USA1
1214Sherwood Nursery Co., , 1
1215Simmons, M. Mrs., , 1
1216Siskiyou Rare Plant Nursery, , 1
1217Slocock, O.C.A, , 1
1218Slootjes, , 1
1219Smith, A.L., , 1
1220Smith, B., Dromana, Victoria, Australia1
1221Smith, C & Son, , 1
1222Smith, C.B., , 1
1223Smith, F. & A., , 1
1224Smith, Graham F., Taranaki, New Plymouth, New Zealand1
1225Smith, Samuel, , 1
1226Soames, A.G., , 1
1227Soc. An. L. van Houttepère, , 1
1228Somers, J., , 1
1229Sonneville, J., , 1
1230Spady, H.A., Honsuchachac Rhododendron Garden, Salem, Oregon, USA1
1231Spartanburg Nursery, , 1
1232Staal, H., , 1
1233Stahnke, , 1
1234Stanley Hall, , 1
1235Stavordale, Lord, , 1
1236Stephenson Clarke, N., , 1
1237Strauss, R., , 1
1238Straver, , 1
1239Swan, I.G. & Swan, S.N., Tawa Glen Nursery, Lepperton, New Plymouth, New Zealand1
1240Swanson, H., , 1
1241Swenson, G., , 1
1242Søndergaard, V., , 1
1243Tabata, Y., , 1
1244Takashima, T., , 1
1245Taylor & Sangster, Melbourne, Australia1
1246The High Beeches Gardens Conservation Trust, , 1
1247Thompson, J.G., , 1
1248Thornton, R.E., , 1
1249Topsvoort Nursery, , 1
1250Townhill Park Gardens, , 1
1251Trayling, E.J., , 1
1252Tremayne, J., , 1
1253Trembath, M.L., , 1
1254Tuomala, C., Fort Bragg, CA, USA1
1255Tyerman, , 1
1256Tyson, Ray, , 1
1257Vaerlen, B., Camp Meeker, California, USA1
1258Valder, P.G., , 1
1259van den Akker, D.A., , 1
1260Van der Meer Brothers, , 1
1261van der Meulen, G., , 1
1262van Geersdaele, G., , 1
1263van Loo, C., , 1
1264van Oost, G., , 1
1265van Vliet, A., , 1
1266Vander Wegen, B.A., , 1
1267Vea, J.G., , 1
1268Veitch, R.T., , 1
1269Verboom, K.W., , 1
1270Vervaene, C., , 1
1271Vineland Station, Niagara Falls, Ontario, Canada1
1272Vinson, B., Sumner, WA, USA1
1273Viraghavan, M.S., , 1
1274Vuyk, P., , 1
1275Waelbrouck, , 1
1276Warner's Nurseries, , 1
1277Watson, W., , 1
1278Watters, L., , 1
1279Waugh, T., , 1
1280Wells Nursery, , 1
1281Welvaert, M., , 1
1282White, G., Kingham, Oxfordshire, England1
1283White, Richard H., , 1
1284Whitman, M.V., , 1
1285Whitney & Osborn, , 1
1286Wilkes, W., , 1
1287Wise, H., , 1
1288Wojnar, , 1
1289Wolin, Miriam L., East Brunswick, NJ, USA1
1290Wood, D., , 1
1291Wright, A. Sr & Jr, , 1
1292Wyatt, , 1
1293Wyman, R.M., , 1
1294Yamamoto, K, , 1
1295Yamamoto, Y., , 1
1296Yamanoi, Y., , 1
1297Yashiro, M., , 1
1298Yates, M. Mrs, , 1
1299Younger Botanic Garden, , 1
1300Zahradnik, , 1
 
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Statistics
Listed Hybrids / cultivars2037656.605 %
Synonyms1127
Selections/clones707
Groups (formerly grex)661
Unregistered hybrids What?
Unregistered Hybrids

This category involves:
  • all named hybrids that have no registration in the IRRC, ICRA or JARS
  • all unnamed crosses (like: 'yakushimanum x bureavii')

1119
Listed Hybrids + hybridizer-details1486272.945 %
Listed Hybrids + picture417620.495 %

Estimated total number of hybrids = 36.000

Last 2 hybrid pictures added to hirsutum database:


R. 'Proteo-pron' (Thompson’s Nursery Waldport, Oregon USA)

Photo by: Harold E. Greer
Location: Greer Gardens, Eugene, USA 11 May, 2008

R. 'Odoratum' (Thompson, London , 1869)

Photo by: Harold E. Greer
Location: Greer Gardens, Eugene, USA 15 May, 1988


Last species picture added to hirsutum database
R. acrophilum

Photo by:
Location:


Photo Everard Daniel, Sherwood Garden, UK


Photo Tijs Huisman, Round Bald, Roan Mountain
North Carolina USA, June 19 2006


Photo Everard Daniel, Sheffield Park gardens, Sussex (National Trust) , UK
Rhododendron G.A. Sims, May 30 2004


Photo Yves Tuset, Leonardslee , UK
Rhododendron 'Smithii Group' with wallabies, April 2003
_____________________________________________________________________________________________________________________________________
Hirsutum.info     Project started 03 June 2009