h.p.  - Hand pollinated seeds.
c.p.  - Controlled pollination. (Stigma covered after pollination)
o.p.  - Open pollination.
c.w. - Collected in the wild.
com. - Companion plants.

Lots marked with strikethrough are "sold out".

Kristian Theqvist, Finland
20-01      c.w.   impeditum, Cang Shan 3800 m, Yunnan
20-02      c.w.   racemosum, Cang Shan 2740 m, Yunnan
20-03      c.w.   irroratum, Cang Shan 2750 m, Yunnan
20-04      c.w.   decorum, Pianma pass 3050 m, Yunnan
20-05      c.w.   xanthostephanum, Biluo Shan 2900 m, Yunnan
20-06      c.w.   sulfureum, Biluo Shan 3000-3200 m, Yunnan
20-07      c.w.   beesianum, Peacock pass 3845 m, Yunnan
20-08      c.w.   beesianum, red, Peacock pass 3830 m, Yunnan
20-09      c.w.   x chlorops (wardii x vernicosum), Gongkahu 3650 m, Yunnan
20-10      c.w.   phaeochrysum, Gongkahu 4250 m, Yunnan
20-11      c.w.   phaeochrysum var. agglutinatum, Baima Shan 4110 m, Yunnan
20-12      c.w.   aganniphum, Baima Shan 4100 m, Yunnan
20-13      c.w.   aganniphum, Baima Shan 4265 m, Yunnan
20-14      c.w.   phaeochrysum, Baima Shan 4250 m, Yunnan
20-15      c.w.   decorum, Kari Pass 3360 m, Yunnan
20-16      c.w.   wardii, Kari Pass 3420 m, Yunnan
20-17      c.w.   heliolepis, Kari Pass 3600 m, Yunnan
20-18      c.w.   sanguineum, from Benzilan towards Xiaoxueshan 4100 m, Yunnan
20-19      c.w.   vernicosum Xiaoxueshan 3520 m, Yunnan
20-20      c.w.   trichostomum Xiaoxueshan 3520 m, Yunnan
20-21      c.w.   racemosum, Xiaoxueshan 3520 m, Yunnan
20-22      c.w.   oreotrephes, Xilianpen pass 3685 m, Yunnan
20-23      c.w.   hippophaeoides, Xilianpen pass 3690 m, Yunnan
20-24      c.w.   rubiginosum, Xilianpen pass 3670 m, Yunnan
20-25      c.p.   adenogynum X Great Dane, nice indumented leaves
20-26      c.p.   Bellefontaine X Dagmar, fragrance
20-27      c.p.   brachycarpum ssp. tigerstedtii, cross between two plants from Arboretum Mustila
20-28      c.p.   brachycarpum ssp. tigerstedtii X (macabeanum x sinogrande), large leaves
20-29      c.p.   brachycarpum var. roseum, cross between two dwarf plants
20-30      c.p.   brachycarpum var. roseum X Böhmen, orange on dwarf growth
20-31      c.p.   cumberlandense X arborescens, cross between two hardy azalea species
20-32      c.p.   Dagmar X griffithianum, fragrance
20-33      c.p.   Dagmar X smirnowii, increased hardiness and fragrance?
20-34      c.p.   Great Dane X (falconeri x macabeanum), large leaves
20-35      c.p.   Great Dane X (macabeanum x sinogrande), large leaves
20-36      c.p.   Great Dane X sinofalconeri, large leaves
20-37      c.p.   Kristian's Moonlight X neriiflorum, hardy red, low
20-38      c.p.   Lumotar X griffithianum, large leaves and fragrance
20-39      c.p.   luteum, cross between two dark yellow-flowered
20-40      c.p.   luteum X Austra, fragrance, large, orange-yellow flowers
20-41      c.p.   Mauritz X (pachytrichum var. monosematum x strigillosum), good red
20-42      o.p.   maximum, red form, selfed
20-43      c.p.   Mikkeli X (pachytrichum var. monosematum x strigillosum)
20-44      c.p.   vernicosum? AC2015 X (pachytrichum var. monosematum x strigillosum)
20-45      c.p.   oreodoxa var. fargesii, a cross between plants from different origin
20-46      c.p.   smirnowii X (macabeanum x sinogrande), large leaves
20-47      h.p.   smirnowii X sinofalconeri, large leaves
   Parentage of cultivars used in the crosses:
   Austra: luteum X ?
   Bellefontaine: fortunei X smirnowii
   Böhmen: assumed to be a selection of dicroanthum ssp. scyphocalyx
   Dagmar: decorum X Pink Pearl
   Great Dane: degronianum ssp. yakushimanum X rex
   Kristian's Moonlight = P.M.A. Tigerstedt X Alli; P.M.A. Tigerstedt = brachycarpum ssp. tigerstedtii X unknown;  Alli = brachycarpum X aureum
   Mauritz = brachycarpum ssp. tigerstedtii X forrestii var. repens hybrid
   Lumotar = Helsinki University X fortunei
   Mikkeli, syn. St. Michel: brachycarpum ssp. tigerstedtii X smirnowii
   More information with photos: http://www.rhodogarden.com/ARS/Seed2020.html

Hannu Saarilahti, Finland
20-48      c.p.   Calsap¹ X praevernum RSF4524/2014 male 1966/563
20-49      c.p.   Haaga² X Hachmann's Corinna³
20-50      c.p.   Haaga X Makiyak⁴
20-51      c.p.   Haaga X morii RSF4674/2015 male 1977/377⁸
20-52      c.p.   Haaga X orbiculare RSF4954 male 1994/411⁸
20-53      c.p.   Haaga X pachysanthum RSF4764/2015 male 1978/064^{5, 9}
20-54      c.p.   Haaga X pachysanthum RSF4813/2016 male 1996/066^{6, 9}
20-55      c.p.   Haaga X pachysanthum RSF4819/2016 male 1991/039^{7, 9}
20-56      c.p.   Haaga X proteoides RSF4935 male 87/022¹⁰
20-57      c.p.   Haaga X pseudochrysanthum RSF4881/2017 male 1975/189
20-58      c.p.   Haaga X yuefengense (Millais, UK)⁸
20-59      h.p.   yuefengense (Millais, UK) x aureum (ex Kamtchatkan origin)¹¹
20-60      c.w.   tomentosum, Lake Kukkia, Pälkäne, Finland
   ¹ Calsap(ARS 864), parentage: Catalgla X Sappho
   ² Haaga (RHS 94), parentage: brachycarpum ssp. tigerstedtii X Doctor H.C. Dresselhuys
   ³ Hachmann's Corinna, a repens-type hybrid with red flowers, parentage: Hachmann 1983)
   ⁴ Makiyak, parentage: makinoi X degronianum ssp. yakushimanum
   ⁵ RSF 1978/064 has a white flower with yellow spots
   ⁶ RSF 1996/066 fuchsia pink flower fading to white
   ⁷ RSF 1991/039, white flower
   ⁸ Goal: more showy leaves, hardiness
   ⁹ Goal: more showy leaves, a part of the offspring will have indumentum, hardiness
   ¹⁰ Goal: compact growth, a part of the offspring will have indumentum, hardiness
   ¹¹ A compact broadleaf hybrid with fair hardiness

George Tomaich, Kentucky USA
20-61      o.p.   Trude Webster X fortunei

JRS Seed Exchange, Eizi Yoshimura, Japan
20-62      o.p.   makinoi deep red, Tokyo Metropolis
20-63      c.w.   brachycarpum pink Aomori-Prefecture

Chris Trautmann, Oregon USA
20-64      c.p.   montroseanum X sinofalconeri RSBG #188
20-65      c.p.   (Golden Horseshoe x macabeanum)#1) X (brachycarpum var. tigerstedtii x macabeanum)

Johnny Svensson, Sweden
20-66      c.p.   [(aureum x Prelude) x viscidifolium)] ARS 02/652 X insigne
20-67      c.p.   (aureum x viscidifolium) ARS-seed X viscidifolium RSF 4962
20-68      c.p.   (China x Lissabon) X Loderi Pink Diamond, Belmonte Arboretum
20-69      c.p.   (China x Lissabon) X decorum
20-70      c.p.   (Dexter's Champagne x Dexter's Orange) ARS 01/411 X rex ssp. rex 'Quarts'
20-71      c.p.   (Hanzel x bureavii) X Loderi Pink Diamond, Belmonte Arboretum
20-72      c.p.   (orbiculare x Everred) X yuefengense Cox
20-73      c.p.   rex ssp. fictolacteum ARS 97/316 X rex ssp. fictolacteum
20-74      c.p.   (Spellbinder x calophytum ARS 01/805) X (proteoides x haematodes ssp. chatomallum) J. Birck
20-75      c.p.   (yak x dichroanthum ssp. apodectum) X rex ssp. fictolacteum ARS 97/316
20-76      c.p.   (yak x dichroanthum ssp. apodectum) X insigne
20-77      h.p.   Hotei X macabeanum RSF 4815
20-78      h.p.   Metallica X Loderi Pink Diamond Belmonte Arboretum
20-79      h.p.   Metallica X insigne
20-80      h.p.   Metallica X rex ssp. rex ARS 92/?
20-81      h.p.   Marshalla X rex ssp. rex ARS 92/?
20-82      h.p.   orbiculare X decorum Cox
20-83      h.p.   yak X rex ssp. fictolacteum ARS 97/316
20-84      h.p.   yuefengense X Loderi Pink Diamond Belmonte Arboretum
20-85      h.p.   yuefengense X rex ssp. rex ssp. fictolacteum Lou Traas, Belgien
20-86      h.p.   yuefengense X auriculatum RSF 4912
20-87      h.p.   yuefengense X wardii Cox
20-88      h.p.   wardii ARS 98/379 X wardii Cox

Rosemary Hartman, Oregon USA
20-89      h.p.   principes

Jaakko Saarinen, Finland
20-90      c.w.   minus var. minus Carolinianum Group, NC, Haywood Co., Green Ridge, 35°19'N, 82°55'W, 1420–1520 m
20-91      c.w.   maximum NC, Yancey Co., Little Fork Ridge, 35°42'N, 82°24'W, 1340–1460 m

Tomasz Cyba, Poland
20-92      h.p.   Dontella¹ X Odessa
20-93      h.p.   Leo X Odessa
20-94      h.p.   Queenswood Centenary² X coeloneuron
20-95      h.p.   Queenswood Centenary² X Elizabeth Red Foliage
20-96      h.p.   Queenswood Centenary² X gongshanense
  ¹Dotella = Dopey X Tarantella
  ²Queenswood Centenary = arboretum X yakushimanum

Norman Beaudry, Maryland USA
20-97      h.p.   Helen Ring² X Dr. Dennis Purcell¹
20-98      h.p.   Dr. Dennis Purcell¹ X Helen Ring²
20-99      h.p.   Helen Ring² X ochraceum SEH 80
20-100      h.p.   Hardy Giant X (sinofalconeri hybrid)
20-101      h.p.   Andrew Paton³ X (sinofalconeri hybrid)
20-102      h.p.   Dexter's Honeydew X Moonlight Bay - both sides fragrant
20-103      h.p.   Mike's Yellow X Bea MacDonald
20-104      h.p.   Blazing Grace⁴ X Bea MacDonald
20-105      h.p.   Whitestone (double) X Bea MacDonald
20-106      h.p.   Janet Blair X pachysanthum
20-107      h.p.   pseudochrysanthum dwarf form
   ¹Dr. Dennis Purcell = maximum X Leo
   ²Helen Ring = maximum X arboreum
   ³Andrew Paton = Scintillation X calophytum
   ⁴Blazing Grace = Percy Wiseman X September Song
   ¹SEH = Steve Hootman

John Delano, Massachusetts USA
20-108      h.p.   Bob Furman's Big Yellow X Bea MacDonald
20-109      h.p.   Spectacular X Bea MacDonald
20-110      h.p.   Orange Leopard X Bob Furman's Big Yellow
   Orange Leopard = Voluptuous X Point Defiance

Bruce Clyburn, Nova Scotia, Canada
20-111      h.p.   (Russell Harmon x calophytum) X (Babylon x sutchuenense)
20-112      h.p.   (Russell Harmon x calophytum) X (Hardy Giant x Babylon)
20-113      h.p.   (Russell Harmon x calophytum) X sutchuenense ex Firwood
20-114      h.p.   Spellbinder X sutchuenense ex Firwood
20-115      h.p.   Bosley Dexter 1016 X sutchuenense ex Firwood
20-116      h.p.   Dalmation X sutchuenense ex Plant Farm
20-117      h.p.   Normandy X sutchuenense ex Plant Farm
20-118      h.p.   (yuefengense x brachycarpum ssp. tigerstedtii) X yuefengense 08/426
20-119      h.p.   Paul Dee X sutchuenense ex Plant Farm
20-120      h.p.   Russell Harmon X (Hardy Giant x Babylon)
   The R. sutchuenense used in these crosses was obtained from a reputable species nursery. It has a large maroon blotch. A taxonomist might say R. sutchuenense var. geraldii.

Richard Murcott, New York USA
20-121      o.p.   minus var. minus Carolinianum Group, yellow
20-121A     o.p.   schlippenbachii alba

Michael Oliver, Oregon USA
All seeds are intraspecific crosses of R. occidentale, the Western Azalea.
20-122      h.p.   (SM30 x 2406)05-1 X (SM30 x 2406)06-1
20-123      h.p.   (SM189 x SM232)15 X SM30
20-124      h.p.   (SM28-3 x SM30) X (SM30 x 2406)05-1
20-125      h.p.   (SM28-3 X SM30) selfed
20-126      h.p.   SM502 selfed
   SM30 is a Smith-Mossman find with a lot of yellow on each of the five petals.
   2406 has a lot of pink and some yellow on all five petals. This cross has produced plants with a lot of yellow and pink on each of the five petals. This is a second generation cross to produce a flower with more yellow and pink.
   (SM189 X SM232) is a cross made by Dick Cavender. SM189 has large flowers for an occidentale and SM232 has very colorful frilly flowers. (SM 189 X SM232)15 is a good selection from this cross. The aim of this cross is to produce flowers that have the best features of this cross and SM30.
   SM28-3 is petaloid double on some of its flowers. The goal of this cross is to produce a larger fraction of flowers that are petaloid double with more yellow and pink.
   SM502 is a picotee with a thin purple picotee. As it grows sport branches emerge. On these sport branches, the picotees are wider and the leaves on the sports have blotches of purple. As the plant grows, the sports have sports, which have a very wide picotee and the leaves have a greater area of purple blotches. The goal of this cross is simply to see what occurs.

John Weagle, Nova Scotia Canada
20-127      c.p.   (brachycarpum 'Tony Law' x rex ssp. fictolacteum)^P1 X strigillosum Briggs
20-128      c.p.   Flautando X platypodum Larsen
20-129      c.p.   Flautando X [(brachycarpum x aureum) x caloxanthum Royston]^P2
20-130      c.p.   Gwen's bright yellow-orange^P3, selfed
20-131      c.p.   Harold Amateis X insigne Windsor^P4
20-132      c.p.   (makinoi Tysk x makinoi Kew) X sibling
20-133      c.p.   Sundust X insigne Windsor
20-134      c.p.   Sundust X Flautando
20-135      c.p.   Barbara Hall X sutchuenense Briggs Greig #1 ³
20-136      o.p.   brachycarpum ssp. tigerstedtii selfed
20-137      c.p.   kaempferi var. latisepalum Halifax Public Gardens X SIBBED
20-138      c.p.   camtschaticum selfed
20-139      o.p.   vaseyi Indian Harbour
20-140      o.p.   mucronulatum Cheju²
20-141      o.p.   mucronulatum Woodland Pink X Cornell Pink²
20-142      o.p.   dauricum 'Ruth Wainwright¹
20-143      c.p.   (Napoli x Abraxas) X Scotian Sovereign⁴
20-144      c.p.   (yakushimanum x adenogynum] X Scotian Sovereign⁴
20-145      c.p.   rupicola var. chryseum Gongkahu Mountain
20-146      o.p.   Flautando
20-147      c.p.   thomsonii X platypodum OJL
20-148      o.p.   primuliferum
20-149      o.p.   canadense Indian Harbour, NS
   ¹Very likely selfed, a compact purple dauricum that has flowered reliably in Halifax, NS for over forty years. It was grown from collected wild seed in Hokkaido.
   ²Both will come a minimum of 30% true. Only other rhodos in flower – 'Russell Harman' & 'Firestorm'; haematodes ssp. chaetomallum but rather distant.
   ³Very early, blooms with oreodoxa, calophytum and two other siblings of this cross in flower when this was in bloom.
   ⁴ARS seed ex Palle Schaarup, (yak x rex) x rex
   ^P1Photo at: https://www.rhododendron.org/exchange/weagle29.htm
   ^P2Photo at: https://www.rhododendron.org/exchange/weagle30.htm
   ^P3Photo at: https://www.rhododendron.org/exchange/weagle31.htm
   ^P4Photo at: https://www.rhododendron.org/exchange/weagle32.htm

Roberto Lesti, Sweden
20-150      h.p.   x erythrocalyx X tanastylum RSF 4926
20-151      h.p.   x erythrocalyx X gongshanense RSF 4933
20-152      h.p.   x erythrocalyx X viscidifolium RSF 4962
20-153      h.p.   x erythrocalyx X macabeanum NAPE 027 (RSF 4918)
20-154      h.p.   Kupferberg X viscidifolium RSF 4962
20-155      h.p.   Bohlken's Snow Fire X macabeanum NAPE 027 (RSF 4918)
   The seed plants are from my garden.
   R. x erythrocalyx comes from Rhododendron Haven in Denmark. It is a natural hybrid ?
   R. Kupferberg is believed to be R. viscidifolium x R dichroanthum ssp. scyphocalyx
   Bohlken's Snow Fire is R. yakushimanum “Koichiro Wada” X Hachman's Diadem

Joe Bruso, Massachusetts USA
20-156      h.p.   (maximum x makinoi) X asterochnoum RSF 98/561
20-157      h.p.   (bureavii x pachysanthum) X (fortunei X rex) Flavell
20-158      h.p.   [(yak x lacteum) x (yak x macabeanum)] X Lorry Roeder¹
20-159      h.p.   [(yak x lacteum) x (yak x macabeanum)] X [(catawbiense x yak) x macabeanum]
20-160      h.p.   elegantulum o.p. X (yak x macabeanum)
20-161      h.p.   elegantulum o.p. X pubicostatum
20-162      h.p.   maximum 'Red Picotee' X (sutchuenense x strigillosum)
20-163      h.p.   maximum 'Red Picotee' X asterochnoum RSF 98/561
20-164      h.p.   Mountain Marriage X Lorry Roeder¹
20-165      o.p.   pentaphyllum
20-166      h.p.   auriculatum
20-167      h.p.   Andrew Paton X (catawbiense album x macabeanum)
20-168      h.p.   (ungernii x maximum) X asterochnoum RSF 98/561
   ¹Lorry Roeder = yak x rex

Fred Thurber, Massachusetts USA
20-169      h.p.   Dexter's Peppermint X maoerense RSF 07-125
20-170      h.p.   Dexter's Peppermint X qiaojiaense RSF 215/116
20-171      h.p.   Dexter's Spice X qiaojiaense RSF 215/116
20-172      h.p.   Sweet Perfume X Dexter's Spice
20-173      h.p.   Campfire Peach X Dexter's Spice

A. R. Fitzburgh, New Jersey USA
20-174      h.p.   Red River X decorum ssp. diaprepes clone Gargantua, F.C.C
20-175      h.p.   Parker’s Pink X yellow ponticum hybrid
19-176      h.p.   Gregory Bald selected F2 deciduous Azalea reds
20-177      h.p.   (Janet Blair x Scintillation) X unknown
20-178      h.p.   pseudochrysanthum selfed (Dwarf)
20-179      h.p.   Robert Shill X Tropicana (orange)
20-180      h.p.   White Elegance X Perfectly Pink
20-181      h.p.   Helen Vieira X Great Smoky

Tim Behan, Massachusetts USA
20-182      c.w.   maximum Exeter, Rhode Island

Chris Trautmann, Oregon USA
20-183      h.p.   macabeanum Flavell Garden West X Kathy Bones
20-184      h.p.   kesangii X Kathy Bones

Anitra Laycock, Nova Scotia Canada
20-185      o.p.   Red River
20-186      o.p.   strigillosum, selfed
20-187      o.p.   wardii L & S, selfed
20-188      c.p.   albrechtii, selfed

Kaarel Voitk, Sweden/Estonia
20-189      h.p.   discolor X [(bvt x auriculatum) X (Babylon x auriculatum)]
   Goal: long leaves, large fragrant flowers

Peter Norris, Massachusetts USA
20-190      h.p.   (Scintillation x hemsleyanum) X (yuefengense x fortunei)  Goal: fragrance, large white truss
20-191      h.p.   Janet Blair x yuefengense  Goal: foliage, colorful
20-192      h.p.   Firestorm x yuefengense  Goal: hardy, foliage, red
20-193      h.p.   (yuefengense x platypodum) X strigillosum  Goal: foliage, red
20-194      h.p.   strigillosum X ochraceum  Goal: compact red, narrow foliage
20-195      h.p.   Mrs. T.H. Lowinsky X yuefengense  Goal: foliage, blotch
20-196      h.p.   (yuefengense x platypodum) X Jean Marie de Montague  Goal: red foliage
20-197      h.p.   fortunei ssp. discolor X platypodum  Goal: foliage
20-198      h.p.   gloxineum X (yuefengense x platypodum)  Goal: foliage, blotch
20-199      h.p.   Clayoquot Warrior X ochraceum  Goal: compact red, narrow foliage
20-200      h.p.   (yuefengense x Jenny Tabol) X Janet Blair  Goal: foliage, interesting color
20-201      h.p.   Trilby X Jean Marie de Montague  Goal: hardy red
20-202      o.p.   Pink Sparkler
20-203      o.p.   fortunei ssp. fortunei 'Barto's Favorite'
20-204      o.p.   Cadis X (Lu Shan x Lodauric)
20-205      com.   Stewartia pseudocamellia
20-206      com.   Stewartia malacodendron
20-207      com.   Lilium belamcandra

Robert Zimmerman, Washington State USA
20-208      h.p.   rex ssp. fictolacteum ex SBEC 0956
20-209      h.p.   fulvum
20-210      h.p.   sinogrande
20-211      h.p.   sinofalconeri
20-212      h.p.   kesangiae
20-213      h.p.   pseudochrysanthum Cox x RSBG SD 3243
20-214      h.p.   pachysanthum Bucksskin x Cox
20-215      h.p.   macabeanum ARS x AC 5546
20-216      h.p.   sinofalconeri RZ 2019 hp
20-217      h.p.   moupinense redder forms x sibs
20-218      h.p.   qiaojiaense ex JN

Betty Ann Addison, Minnesota USA
20-219      h.p.   Chickadee X mucronulatum Crater's Edge
20-220      o.p.   Dark Lord¹
20-221      o.p.   dauricum Rice Creek²
20-222      o.p.   Azalea. Karen's crossed it with poukhanense to get larger flower
20-223      c.w.   maximum collected at Kingston, R.I.
20-224      h.p.   Nestucca X Calsap
20-225      h.p.   smirnowii selfed
   ¹From Wayne Mezitt’s garden, the original plant (sibling of Tapestry)
   ²F3 shows lots of variation. dauricum album X dauricum nanum

Alan Anderson, Aberdeen, Scotland
  Species rhododendrons - all h.p. from 2 different clones.
20-226      h.p.   albrechtii
20-227      h.p.   cinnabarinum Sch2580
20-228      h.p.   decorum CH7150
20-229      h.p.   degronianum ssp. heptamerum var. hondoense
20-230      h.p.   longesquamatum
20-231      h.p.   oreotrephes JN741
20-232      h.p.   schlippenbachii
20-233      h.p.   siderophyllum AC4312
20-234      h.p.   sikangense var. exquisitum CNW927
20-235      h.p.   sinofalconeri CH7183
20-236      h.p.   trichocladum CCHH8285
   AC - Alan Clark; CCHH - Chamberlain, Cox, Hootman & Hutchison; CH – Cox & Hutchison; CNW - Clark, Neilsen & Wilson; JN - Jens Nielsen; Sch - Tony Schilling & Hutchison; CH – Cox & Hutchison; CNW - Clark, Neilsen & Wilson; JN - Jens Nielsen; Sch - Tony Schilling

Mike McCullough, California USA
20-237      c.w.   columbianum Sea Ranch, Sonoma County, California
20-238      c.w.   macrophyllum Low Divide Road, Del Norte County, California
20-239      c.w.   occidentale Azalea State Reserve 2606, Azalea State Reserve, Humboldt County, California
20-240      c.w.   occidentale Big Basin 602, Big Basin Redwoods State Park, Santa Cruz County, California
20-241      c.w.   occidentale Big Basin 1014, Big Basin Redwoods State Park, Santa Cruz County, California
20-242      c.w.   occidentale Big Basin 2101, Big Basin Redwoods State Park, Santa Cruz County, California
20-243      c.w.   occidentale Low Divide 3601, Low Divide Road, Six Rivers National Forest, Del Norte County, California
20-244      c.w.   occidentale Mt. Tam 1312, Mount Tamalpais, Marin County, California
20-245      c.w.   occidentale Mt. Tam 1804, Mount Tamalpais, Marin County, California
20-246      c.w.   occidentale Low Divide 3804, Low Divide Road, Six Rivers National Forest, Del Norte County, California
20-247      c.w.   occidentale Mt. Tam 2704, Mount Tamalpais, Marin County, California
20-248      c.w.   occidentale Mt. Tam 2903, Mount Tamalpais, Marin County, California
20-249      c.w.   occidentale Mt. Tam 3110, Mount Tamalpais, Marin County, California
20-250      c.w.   occidentale Mt. Tam 3203, Mount Tamalpais, Marin County, California
20-251      c.w.   occidentale with red foliage, Mount Tamalpais, Marin County, California
20-252      c.w.   occidentale Patrick's Point 3502. Patrick's Point State Park, Humboldt County, California
20-253      c.w.   occidentale Portola 2506, Portola Redwoods State Park, San Mateo County, California
20-254      c.w.   occidentale, Portola Redwoods State Park, San Mateo County, California
20-255      c.w.   occidentale Sea Ranch 3002, Sea Ranch, Sonoma County, California
20-256      c.w.   occidentale Sea Ranch 3002, Sea Ranch, Sonoma County, California
20-257      c.w.   occidentale Sea Ranch collected from various plants, Sea Ranch, Sonoma County, California
20-258      c.w.   occidentale Stagecoach 903, Stagecoach Hill, Humboldt County, California
20-259      c.w.   occidentale Stagecoach 2601, Stagecoach Hill, Humboldt County, California
20-260      o.p.   magnificum Monte Toyon Rhododendron Garden of Maurie and Fran
20-261      h.p.   Elsie Frye X dalhousiae var. rhabdotum
20-262      h.p.   Roy Hudson X Joy Ridge

Jack Looye, Nova Scotia Canada
20-263      c.w.   {[China Boy x (Charles Dickens x Mars)] x (Nova Zembla x Vine Rouge) X thompsonii

John Heinze, Ohio USA
20-264      h.p.   (Arabia x Cecil Smith #4) X Sunset Dancer
20-265      h.p.   (Arabia x Cecil Smith #4) X Orange Amber
20-266      h.p.   Amanda Joan Young X Sunset Dancer
20-267      h.p.   Solar Flair X Sunset Dancer
20-268      h.p.   (Blazing Son x Hindustan) X Sunset Dancer
20-269      h.p.   Argentina X fulgens
20-270      h.p.   (Pygmalion x haematodes x yak. Exbury) X Argentina
20-271      h.p.   (Crystal Yellow x Cecil Smith #1) X Sunset Dancer
20-272      h.p.   (Crystal Yellow x Cecil Smith #1) X (Papaya Punch x Casanova)
20-272A      h.p.   (Crystal Yellow x Cecil Smith #1) X Orange Amber

Lloyd Gilmore, British Columbia Canada
20-273      h.p.   Rocky Point X (Butter Brickle x Marie Starks)
20-274      h.p.   (Butter Brickle x Marie Starks) selfed
20-275      h.p.   Champagne Lace X (Butter Brickle x Marie Starks)
20-275A      h.p.   Kabarett X Dexter's Spice

Jeff Thompson, Massachusetts USA
20-276      h.p.   Dorothy Swift X Everred  Goal: Hardy, small, compact red foliage
20-277      h.p.   Yesterday, Today and Tomorrow, selfed  Goal: Dwarf hardy, yak type plant that flowers young
20-278      h.p.   Dorothy Swift X mallotum
20-279      h.p.   Dorothy Swift X pseudochrysanthum
20-280      h.p.   Yesterday, Today and Tomorrow X pachysanthum
20-281      h.p.   Dorothy Swift X Cinnamon Bear  Goal: hardy, indumentum, foliage, compact, and floriferous
   Dorothy Swift and Yesterday, Today and Tomorrow are hybrids of R. smirnowii X R. yakushimanum done by Gustav Mehlquist. These 2 were picked out of 2000 seedlings and are hardy to -25 degrees Fahrenheit. Yesterday, Today and Tomorrow is about 4 feet in 20 years, and Dorothy Swift is about 4 feet 6 inches in 20 years.
   Everred is an elepidote hybrid by Kenneth Cox that has new foliage that is red. It is a low growing plant that is hardy to 0 degrees Fahrenheit.
   Cinnamon Bear is R. bureavii X R. degronianum ssp. yakushimanum, and has cinnamon indumentum. It grows to about 3 feet in 10 years, and has more symmetrical branching than does Teddy Bear, which is the same cross.

Lonnie M. Player, North Carolina USA
20-282      c.p.   Player 1-81-3¹ X Player 12-01-6²
20-283      h.p.   Golden Dream X Cape Fear Gold
   ¹Player 1-81-3 is a cross of R. atlanticum X Exbury hybrid (1981).    ²Player 1-01-6 is a cross of Golden Dream x Cape Fear Gold made in (2001).

Mike Creel, South Carolina USA
20-284      h.p.   chapmanii 'Woodlanders Pink', selfed¹
20-285      o.p.   maximum Cliffs of Glassy²
20-286      h.p.   minus Creel's Snowbank³, Carolinianum, selfed
20-287      h.p.   minus, Early Minus⁴, selfed
20-288      o.p.   eastmanii 'North Wall'⁵
20-289      o.p.   alabamense 'Creel's Alabammy'^{6, P1
   1}Isolated from other evergreen rhododendron on right trail, seedling from Woodlanders Nursery, sprawling plant, has sported stems with red leaves.
   ²Pink, from group of seedlings grown from nature trail on Chestnut Ridge preserve near Landrum, SC, in Greenville County, isolated from other evergreen rhododendrons, produces pure seed.
   ³Pure white with filaments turning pink, heat hardy, Blooms in mid-April with R. flammeum, probably selfed. Grown from cuttings from a from shaded-non-flowering plant in Charles Eastman yard, he said was collected in NC mountains. Produces seedlings exactly like the seed parent. Some leaves turn bright yellow in fall-winter.
   ⁴Light pink, compact erect plant, outstanding bloomer earlier than species, from plants grown from cuttings stuck 3-12-07 collected from a colony in Covington County, Alabama, on the bluffs and banks of the . reservoirs of the Conecuh River. They bloom earlier than the other Coastal Zone minuses to the east (lower Chattahoochee River) and the west (Alabama River in Monroe County, Alabama).
   ⁵White with yellow blotch, suffused with pink, in tight group with 3 other eastmanii, Meadow, Charles Eastman, and one unnamed, produces pure species seed.
   ⁶Forms multiple buds on stem end, makes ball trusses, probably selfs, growing near several tetraploid austrinums and Exbury X austrinum hybrids.
   ^P1Photo at: https://www.rhododendron.org/exchange/creel73.htm

Ruddi Perriard, Denmark
Seed collected in Yunnan, November 2019
20-290      c.w.   fulvoides Peechok, Yunnan Ca 3600 m
20-291      c.w.   glischrum Taobao Shan, Yunnan, Ca 3600 m
20-291A      c.w.   section neriflora, n.o.s. (R. aperantum?) Kawakarpo, Yunnan, Ca 3700 m
20-292      c.w.   praestans Peechok, Yunnan Ca 3600 m
20-293      c.w.   roxieanum, high alpine Baima Pass Ca 4300 m
20-294      c.w.   uvariifolium Peechok, Yunnan Ca 3600 m
20-295      c.w.   yunnanense? Taobao Shan, Yunnan, Ca 3600 m
20-295A      c.w.   rothchildii Taobao Shan, Yunnan, Ca 3600 m

Theo Leydens, The Netherlands
20-296      o.p.   oldhamii
20-297      o.p.   yunnanense
20-298      o.p.   macrophyllum
20-299      o.p.   lasiostylum
20-300      com.   hypericum lancasteri
20-301      o.p.   annae
20-302      o.p.   campylogynum

Erhard Moser, Germany
20-303      h.p.   brachycarpum, very dwarf form
20-304      o.p.   myrtifolium
20-305      o.p.   obtusum
20-306      o.p.   fortunei
20-307      o.p.   smirnowii
20-308      o.p.   Juanita, Knap Hill
20-309      com.   Gentiana septemfida lagodeduana
20-310      com.   Paris polyphylla

Kevin McCorkle, North Carolina USA
20-311      o.p.   austrinum Varnadoe legacy mix, Georgia
20-312      o.p.   alabamense Varnadoe legacy mix, Georgia
20-313      o.p.   flammeum Varnadoe legacy mix, Georgia
20-314      o.p.   prunifolium Varnadoe legacy mix, Georgia
20-315      o.p.   Cape Fear  Gold Lonnie Player hybrid
20-316      o.p.   Pink Tetra  Kevin McCorkle deciduous azalea
20-317      o.p.   (My Mary x Marydel) X Fragrant Star
20-318      o.p.   Jesse Benton Strickland hybrid

Richard Flavell, Connecticut USA
20-319      o.p.   dauricum alba RSF
20-320      h.p.   removed
20-321      o.p.   Sky Admiral X macabeanum Bones
20-322      o.p.   montroseanum hybrid X sinofalconeri RSF 00/167
20-323      o.p.   (catawbiense 'Ken's Find' x rex #1) X macabeanum Bones  Goal: Big leaf, foliage
20-324      h.p.   (catawbiense 'Ken's Find' x rex #2) X (fortunei Lu Shan x rex KW4509)  Goal: Big leaf, foliage
20-325      h.p.   Firestorm X macabeanum Bones  Goal: foliage
20-326      h.p.   Hoopla X macabeanum Bones  Goal: foliage
20-327      h.p.   Jurassic Fantasy X (fortunei Lu Shan x rex KW4509)  Goal: Big leaf, foliage
20-328      h.p.   macabeanum FGW X macabeanum Bones
20-329      h.p.   macabeanum FGW X Kathy Bones  Hardier big leaf, for inland west coast
20-330      h.p.   March Madness X calophytum RSF 98/381  Goal: foliage
20-331      h.p.   March Madness X Babylon  Goal: foliage
20-332      h.p.   Phipps Yellow X macabeanum Bones  Goal: foliage
20-333      h.p.   Sky Admiral X (brachycarpum x macabeanum Lord Stairs)  Goal: yellow, foliage
20-334      h.p.   Sky Admiral X [Gedser Gold x (rex x Desert Gold)]  Goal: yellow, foliage
20-335      h.p.   Sky Admiral X Kathy Bones
20-336      h.p.   smirnowii X rex RSBG #2
20-337      h.p.   kesangiae X Kathy Bones
20-338      h.p.   (smirnowii x sinogrande RSF 82/040) X macabeanum Bones
20-339      h.p.   Spellbinder X Kathy Bones
20-340      h.p.   Trinity X sinofalconeri RSF 00/188
20-341      h.p.   vernicosum Mt. Siga X macabeanum Bones
20-342      h.p.   vernicosum Mt. Siga X Kathy Bones
20-343      h.p.   Visiting Angels X macabeanum Bones
20-344      h.p.   Visiting Angels X sinofalconeri
20-345      h.p.   Vulcan X macabeanum Bones

Thomasz Cyba (#2 lot) Poland
20-346      h.p.   Bibiani X Elizabeth Red Foliage
20-347      h.p.   Bibiani X yakushimanum
20-348      c.p.   decorum white X Oporto  2018 seed

Erik Gustaavsson, Norway
20-349      o.p.   (brachycarpum ssp. tigerstedtii X auriculatum)  (isolated)

John and Sally Perkins, New Hampshire USA
20-350      c.w.   canadense Amherst, NH
20-351      h.p.   anhwheiense X williamsianum
20-352      h.p.   brachycarpum ssp. tigerstedtii X Gable's discolor

Walter Ostrom, Nova Scotia Canada
20-353      o.p.   canadense, alba  (isolated)
20-354      o.p.   schlippenbachii, choice (isolated)
20-355      o.p.   yuefengense

Karel Bernady, Pennsylvania USA
20-356      c.w.   calendulaceum October, 2019, Graham County, NC; collected from a single plant with orange flowers
20-357      c.w.   calendulaceum October, 2019, Graham County, NC; collected from a single plant with orange flowers
20-358      c.w.   calendulaceum October, 2019, Graham County, NC; collected from a single plant with orange flowers.
20-359      c.w.   calendulaceum October, 2019, Graham County, NC; collected from a single plant with dark orange red flowers
20-360      c.w.   calendulaceum October, 2019, Mitchell County, NC; collected from a plant population
20-361      c.w.   calendulaceum October, 2019, Pocahontas County, WV; collected from a single plant with golden colored flowers and an apricot blotch
20-362      c.w.   periclymenoides November, 2019, Lackawanna County, PA; collected from plant population
20-363      c.w.   prinophyllum October, 2019, Grant County, WV; collected from a single plant with darker rose colored flowers
20-364      c.w.   prinophyllum October, 2019, Tucker County, WV; collected from a plant population with darker rose colored flowers

Ron Rabideau, New Jersey USA
20-365      h.p.   (Summer Joy X Very Berry)#5 X L'Engin
20-366      h.p.   (Summer Joy X Very Berry)#5 X (Summer Joy X Very Berry)#1
20-367      o.p.   (Summer Joy X Very Berry)#1
20-368      o.p.   maximum, reddish-flowered seedling OP (selfed)

Don Hyatt, Virginia USA
20-369      c.w.   calendulaceum, mixed plants, Hooper Bald, NC
20-370      c.w.   calendulaceum 'Hooper's Copper, Orange, Hooper Bald, NC
20-371      c.w.   calendulaceum 'Hooper Duke Rankin', Hooper Bald, NC
20-372      c.w.   calendulaceum 'Hooper Frilled Red', Hooper Bald, NC
20-373      c.w.   calendulaceum 'Hooper Orange Sickle', Hooper Bald, NC
20-374      c.w.   calendulaceum 'Hooper Second Best Red', Hooper Bald, NC
20-375      c.w.   maximum red, 'Curtis Creek Red Max' No. Carolina
20-376      c.w.   maximum white/blush, Transylvania City, No.Carolina
20-377      c.w.   vaseyi pink, el. 5500 ft., Haywood Cnty, No.Carolina