| belgium | | rhododendron hybrid cultivar | species | 1 | 0 |
| belgium | | rhododendron simsii | species | 15 | 0 |
| canada | alberta | rhododendron albiflorum | species | 1 | 0 |
| canada | alberta | rhododendron columbianum | species | 3 | 0 |
| canada | british columbia | rhododendron albiflorum | species | 3 | 0 |
| canada | british columbia | rhododendron columbianum | species | 2 | 0 |
| canada | british columbia | rhododendron groenlandicum | species | 1 | 0 |
| canada | british columbia | rhododendron macrophyllum | species | 1 | 0 |
| canada | newfoundland and labrador | rhododendron canadense | species | 9 | 0 |
| canada | newfoundland and labrador | rhododendron groenlandicum | species | 1 | 0 |
| canada | newfoundland and labrador | rhododendron lapponicum | species | 2 | 0 |
| canada | northwest territories | rhododendron lapponicum | species | 6 | 0 |
| canada | northwest territories | rhododendron tomentosum subsp. decumbens | subspecies | 2 | 0 |
| canada | nunavut | rhododendron lapponicum | species | 5 | 0 |
| canada | nunavut | rhododendron tomentosum subsp. decumbens | subspecies | 6 | 0 |
| canada | ontario | rhododendron groenlandicum | species | 4 | 0 |
| canada | quebec | rhododendron canadense | species | 4 | 0 |
| canada | yukon | rhododendron groenlandicum | species | 2 | 0 |
| canada | yukon | rhododendron lapponicum | species | 2 | 0 |
| canada | yukon | rhododendron tomentosum | species | 4 | 0 |
| china | | rhododendron adenogynum | species | 8 | 0 |
| china | | rhododendron adenosum | species | 8 | 0 |
| china | | rhododendron aganniphum var. aganniphum | varietas | 6 | 0 |
| china | | rhododendron aganniphum var. flavorufum | varietas | 4 | 0 |
| china | | rhododendron agastum | species | 4 | 0 |
| china | | rhododendron alutaceum | species | 2 | 0 |
| china | | rhododendron anthopogon | species | 12 | 0 |
| china | | rhododendron arboreum | species | 4 | 0 |
| china | | rhododendron argyrophyllum | species | 4 | 0 |
| china | | rhododendron austrinum | species | 1 | 0 |
| china | | rhododendron baileyi | species | 4 | 0 |
| china | | rhododendron barbatum | species | 16 | 0 |
| china | | rhododendron basilicum | species | 4 | 0 |
| china | | rhododendron beanianum | species | 8 | 0 |
| china | | rhododendron beesianum | species | 4 | 0 |
| china | | rhododendron bulu | species | 8 | 0 |
| china | | rhododendron bureavii | species | 1 | 0 |
| china | | rhododendron callimorphum | species | 4 | 0 |
| china | | rhododendron calostrotum var. calciphilum | varietas | 4 | 0 |
| china | | rhododendron calostrotum var. calostrotum | varietas | 10 | 0 |
| china | | rhododendron campanulatum | species | 16 | 0 |
| china | | rhododendron campylocarpum subsp. caloxanthum | subspecies | 4 | 0 |
| china | | rhododendron campylocarpum subsp. campylocarpum | subspecies | 8 | 0 |
| china | | rhododendron campylogynum | species | 12 | 0 |
| china | | rhododendron cephalanthum | species | 8 | 0 |
| china | | rhododendron cerasinum | species | 4 | 0 |
| china | | rhododendron chamaethomsonii | species | 3 | 0 |
| china | | rhododendron chamaethomsonii var. chamaethauma | varietas | 12 | 0 |
| china | | rhododendron chamaethomsonii var. chamaethomsonii | varietas | 12 | 0 |
| china | | rhododendron championiae | species | 1 | 0 |
| china | | rhododendron charitopes subsp. charitopes | subspecies | 8 | 0 |
| china | | rhododendron charitopes subsp. tsangpoense | subspecies | 12 | 0 |
| china | | rhododendron cinnabarinum | species | 9 | 0 |
| china | | rhododendron clementinae | species | 7 | 0 |
| china | | rhododendron coelicum | species | 4 | 0 |
| china | | rhododendron coryanum | species | 8 | 0 |
| china | | rhododendron crinigerum | species | 4 | 0 |
| china | | rhododendron cuneatum | species | 12 | 0 |
| china | | rhododendron dalhousieae | species | 4 | 0 |
| china | | rhododendron danbaense | species | 4 | 0 |
| china | | rhododendron dasycladoides | species | 4 | 0 |
| china | | rhododendron dawuense | species | 12 | 0 |
| china | | rhododendron decorum | species | 11 | 0 |
| china | | rhododendron delavayi | species | 11 | 0 |
| china | | rhododendron delavayi var. delavayi | varietas | 20 | 0 |
| china | | rhododendron densifolium | species | 4 | 0 |
| china | | rhododendron denudatum | species | 4 | 0 |
| china | | rhododendron dignabile | species | 8 | 0 |
| china | | rhododendron edgeworthii | species | 8 | 0 |
| china | | rhododendron erastum | species | 4 | 0 |
| china | | rhododendron excellens | species | 4 | 0 |
| china | | rhododendron facetum | species | 4 | 0 |
| china | | rhododendron farinosum | species | 4 | 0 |
| china | | rhododendron fastigiatum | species | 4 | 0 |
| china | | rhododendron faucium | species | 20 | 0 |
| china | | rhododendron fletcherianum | species | 4 | 0 |
| china | | rhododendron forrestii | species | 8 | 0 |
| china | | rhododendron fortunei | species | 2 | 0 |
| china | | rhododendron fragariiflorum | species | 4 | 0 |
| china | | rhododendron fulgens | species | 4 | 0 |
| china | | rhododendron fuyuanense | species | 6 | 0 |
| china | | rhododendron gongshanense | species | 4 | 0 |
| china | | rhododendron griersonianum | species | 2 | 0 |
| china | | rhododendron heliolepis | species | 5 | 0 |
| china | | rhododendron hemitrichotum | species | 8 | 0 |
| china | | rhododendron hippophaeoides | species | 8 | 0 |
| china | | rhododendron hirtipes | species | 8 | 0 |
| china | | rhododendron hodgsonii | species | 8 | 0 |
| china | | rhododendron hylaeum | species | 8 | 0 |
| china | | rhododendron hypenanthum | species | 8 | 0 |
| china | | rhododendron intricatum | species | 4 | 0 |
| china | | rhododendron irroratum | species | 4 | 0 |
| china | | rhododendron jingangshanicum | species | 1 | 0 |
| china | | rhododendron jinpingense | species | 4 | 0 |
| china | | rhododendron kasoense | species | 4 | 0 |
| china | | rhododendron keysii | species | 12 | 0 |
| china | | rhododendron kongboense | species | 8 | 0 |
| china | | rhododendron lanatum | species | 8 | 0 |
| china | | rhododendron latoucheae | species | 44 | 0 |
| china | | rhododendron laudandum | species | 8 | 0 |
| china | | rhododendron lepidotum | species | 16 | 0 |
| china | | rhododendron leptothrium | species | 1 | 0 |
| china | | rhododendron maddenii subsp. crassum | subspecies | 8 | 0 |
| china | | rhododendron maddenii subsp. maddenii | subspecies | 1 | 0 |
| china | | rhododendron mainlingense | species | 16 | 0 |
| china | | rhododendron medoense | species | 4 | 0 |
| china | | rhododendron mekongense | species | 8 | 0 |
| china | | rhododendron mitriforme | species | 1 | 0 |
| china | | rhododendron molle | species | 2 | 0 |
| china | | rhododendron mollicomum | species | 12 | 0 |
| china | | rhododendron montroseanum | species | 12 | 0 |
| china | | rhododendron moulmainense | species | 8 | 0 |
| china | | rhododendron mucronulatum | species | 4 | 0 |
| china | | rhododendron neriiflorum var. neriiflorum | varietas | 8 | 0 |
| china | | rhododendron nivale subsp. boreale | subspecies | 8 | 0 |
| china | | rhododendron nivale subsp. nivale | subspecies | 16 | 0 |
| china | | rhododendron oreotrephes | species | 100 | 0 |
| china | | rhododendron ovatum | species | 3 | 0 |
| china | | rhododendron pachypodum | species | 4 | 0 |
| china | | rhododendron pachytrichum | species | 4 | 0 |
| china | | rhododendron papillatum | species | 4 | 0 |
| china | | rhododendron parmulatum | species | 4 | 0 |
| china | | rhododendron pendulum | species | 12 | 0 |
| china | | rhododendron phaeochrysum | species | 224 | 0 |
| china | | rhododendron phaeochrysum var. levistratum | varietas | 4 | 0 |
| china | | rhododendron phaeochrysum var. phaeochrysum | varietas | 8 | 0 |
| china | | rhododendron primuliflorum | species | 4 | 0 |
| china | | rhododendron principis | species | 112 | 0 |
| china | | rhododendron proteoides | species | 4 | 0 |
| china | | rhododendron protistum | species | 5 | 0 |
| china | | rhododendron pruniflorum | species | 8 | 0 |
| china | | rhododendron pseudociliipes | species | 4 | 0 |
| china | | rhododendron pugeense | species | 4 | 0 |
| china | | rhododendron pumilum | species | 12 | 0 |
| china | | rhododendron qiaojiaense | species | 4 | 0 |
| china | | rhododendron racemosum | species | 24 | 0 |
| china | | rhododendron ramsdenianum | species | 8 | 0 |
| china | | rhododendron rex subsp. fictolacteum | subspecies | 8 | 0 |
| china | | rhododendron rex subsp. rex | subspecies | 8 | 0 |
| china | | rhododendron rigidum | species | 8 | 0 |
| china | | rhododendron rivulare | species | 8 | 0 |
| china | | rhododendron roseatum | species | 4 | 0 |
| china | | rhododendron rothschildii | species | 4 | 0 |
| china | | rhododendron roxieanum var. oreonastes | varietas | 1 | 0 |
| china | | rhododendron rubiginosum | species | 16 | 0 |
| china | | rhododendron rupicola var. chryseum | varietas | 8 | 0 |
| china | | rhododendron rupicola var. rupicola | varietas | 12 | 0 |
| china | | rhododendron russatum | species | 4 | 0 |
| china | | rhododendron saluenense var. prostratum | varietas | 4 | 0 |
| china | | rhododendron saluenense var. saluenense | varietas | 4 | 0 |
| china | | rhododendron sanguineum var. didymoides | varietas | 4 | 0 |
| china | | rhododendron sanguineum var. didymum | varietas | 5 | 0 |
| china | | rhododendron sanguineum var. haemaleum | varietas | 5 | 0 |
| china | | rhododendron scabrifolium | species | 28 | 0 |
| china | | rhododendron seinghkuense | species | 4 | 0 |
| china | | rhododendron selense subsp. dasycladum | subspecies | 4 | 0 |
| china | | rhododendron selense subsp. selense | subspecies | 6 | 0 |
| china | | rhododendron setosum | species | 8 | 0 |
| china | | rhododendron sherriffii | species | 4 | 0 |
| china | | rhododendron simsii | species | 11 | 0 |
| china | | rhododendron sinogrande | species | 4 | 0 |
| china | | rhododendron sperabile | species | 8 | 0 |
| china | | rhododendron sperabiloides | species | 4 | 0 |
| china | | rhododendron spiciferum | species | 12 | 0 |
| china | | rhododendron spinuliferum | species | 16 | 0 |
| china | | rhododendron stamineum | species | 8 | 0 |
| china | | rhododendron tapetiforme | species | 6 | 0 |
| china | | rhododendron tatsienense | species | 4 | 0 |
| china | | rhododendron telmateium | species | 12 | 0 |
| china | | rhododendron temenium var. temenium | varietas | 8 | 0 |
| china | | rhododendron tomentosum | species | 1 | 0 |
| china | | rhododendron traillianum var. dictyotum | varietas | 8 | 0 |
| china | | rhododendron trichocladum | species | 8 | 0 |
| china | | rhododendron trichostomum | species | 20 | 0 |
| china | | rhododendron triflorum | species | 20 | 0 |
| china | | rhododendron tsariense | species | 8 | 0 |
| china | | rhododendron tubulosum | species | 4 | 0 |
| china | | rhododendron uvariifolium | species | 18 | 0 |
| china | | rhododendron vaccinioides | species | 4 | 0 |
| china | | rhododendron vellereum | species | 8 | 0 |
| china | | rhododendron vernicosum | species | 24 | 0 |
| china | | rhododendron vialii | species | 8 | 0 |
| china | | rhododendron virgatum | species | 8 | 0 |
| china | | rhododendron viridescens | species | 8 | 0 |
| china | | rhododendron wallichii | species | 8 | 0 |
| china | | rhododendron wightii | species | 8 | 0 |
| china | | rhododendron williamsianum | species | 4 | 0 |
| china | | rhododendron xanthocodon | species | 9 | 0 |
| china | | rhododendron yaoshanense | species | 4 | 0 |
| china | | rhododendron yungningense | species | 4 | 0 |
| china | | rhododendron yunnanense | species | 16 | 0 |
| china | | rhododendron zheguense | species | 4 | 0 |
| china | fujian | rhododendron latoucheae | species | 2 | 0 |
| china | guangdong | rhododendron henryi | species | 16 | 0 |
| china | guangdong | rhododendron levinei | species | 8 | 0 |
| china | guangdong | rhododendron mariae | species | 5 | 0 |
| china | guangdong | rhododendron mariesii | species | 8 | 0 |
| china | guangdong | rhododendron moulmainense | species | 8 | 0 |
| china | guangdong | rhododendron simsii | species | 7 | 0 |
| china | guangdong | rhododendron tingwuense | species | 7 | 0 |
| china | guangxi | rhododendron championiae | species | 3 | 0 |
| china | hebei | rhododendron micranthum | species | 2 | 0 |
| china | hubei | rhododendron simsii | species | 479 | 0 |
| china | jilin | rhododendron aureum | species | 5 | 0 |
| china | shandong | rhododendron mariesii | species | 1 | 0 |
| china | shandong | rhododendron micranthum | species | 2 | 0 |
| china | shandong | rhododendron molle | species | 1 | 0 |
| china | shandong | rhododendron mucronulatum | species | 2 | 0 |
| china | shandong | rhododendron simsii | species | 2 | 0 |
| china | xinjiang | rhododendron x pulchrum | species | 3 | 0 |
| china | yunnan | rhododendron baihuaense | species | 2 | 0 |
| china | yunnan | rhododendron camelliiflorum | species | 1 | 0 |
| china | yunnan | rhododendron delavayi | species | 12 | 0 |
| china | yunnan | rhododendron griersonianum | species | 15 | 0 |
| china | yunnan | rhododendron hanceanum | species | 1 | 0 |
| china | yunnan | rhododendron sanguineum | species | 1 | 0 |
| china | yunnan | rhododendron xanthostephanum | species | 2 | 0 |
| china | zhejiang | rhododendron ovatum | species | 14 | 0 |
| france | | rhododendron ferrugineum | species | 10 | 0 |
| france | | rhododendron hippophaeoides | species | 1 | 0 |
| greenland | | rhododendron lapponicum | species | 6 | 0 |
| india | meghalaya | rhododendron arboreum | species | 68 | 0 |
| italy | abruzzo region | rhododendron ferrugineum | species | 2 | 0 |
| italy | lombardy region | rhododendron hirsutum | species | 2 | 0 |
| italy | tuscany region | rhododendron ferrugineum | species | 2 | 0 |
| italy | tuscany region | rhododendron hirsutum | species | 2 | 0 |
| japan | | rhododendron dauricum | species | 3 | 0 |
| japan | | rhododendron indicum | species | 1 | 0 |
| japan | | rhododendron japonicum f. flavum | forma | 10 | 0 |
| japan | | rhododendron kaempferi | species | 2 | 0 |
| japan | | rhododendron kiusianum x rhododendron indicum | species | 19 | 0 |
| japan | | rhododendron reticulatum | species | 1 | 0 |
| japan | aichi prefecture | rhododendron indicum | species | 4 | 0 |
| japan | aichi prefecture | rhododendron japonicum | species | 3 | 0 |
| japan | aichi prefecture | rhododendron kaempferi | species | 2 | 0 |
| japan | aichi prefecture | rhododendron keiskei | species | 7 | 0 |
| japan | aichi prefecture | rhododendron macrosepalum | species | 16 | 0 |
| japan | aichi prefecture | rhododendron makinoi | species | 15 | 0 |
| japan | aichi prefecture | rhododendron reticulatum | species | 11 | 0 |
| japan | aichi prefecture | rhododendron semibarbatum | species | 13 | 0 |
| japan | akita prefecture | rhododendron albrechtii | species | 5 | 0 |
| japan | ehime prefecture | rhododendron uwaense | species | 2 | 0 |
| japan | ehime prefecture | rhododendron weyrichii var. weyrichii | varietas | 2 | 0 |
| japan | fukushima prefecture | rhododendron albrechtii | species | 2 | 0 |
| japan | fukushima prefecture | rhododendron japonicum | species | 2 | 0 |
| japan | gifu prefecture | rhododendron albrechtii | species | 2 | 0 |
| japan | gifu prefecture | rhododendron indicum | species | 1 | 0 |
| japan | gifu prefecture | rhododendron kaempferi | species | 1 | 0 |
| japan | gifu prefecture | rhododendron keiskei | species | 5 | 0 |
| japan | gifu prefecture | rhododendron macrosepalum | species | 8 | 0 |
| japan | gifu prefecture | rhododendron reticulatum | species | 8 | 0 |
| japan | gifu prefecture | rhododendron semibarbatum | species | 2 | 0 |
| japan | gifu prefecture | rhododendron wadanum | species | 2 | 0 |
| japan | gunma prefecture | rhododendron albrechtii | species | 2 | 0 |
| japan | gunma prefecture | rhododendron japonicum | species | 2 | 0 |
| japan | gunma prefecture | rhododendron semibarbatum | species | 2 | 0 |
| japan | gunma prefecture | rhododendron wadanum | species | 2 | 0 |
| japan | hiroshima prefecture | rhododendron japonicum | species | 2 | 0 |
| japan | hiroshima prefecture | rhododendron metternichii var. hondoense | varietas | 6 | 0 |
| japan | hiroshima prefecture | rhododendron mucronatum var. ripense | varietas | 2 | 0 |
| japan | hokkaido prefecture | rhododendron albrechtii | species | 2 | 0 |
| japan | hokkaido prefecture | rhododendron camtschaticum | species | 2 | 0 |
| japan | hokkaido prefecture | rhododendron diversipilosum | species | 3 | 0 |
| japan | hokkaido prefecture | rhododendron hypoleucum | species | 4 | 0 |
| japan | hokkaido prefecture | rhododendron lapponicum | species | 2 | 0 |
| japan | ibaraki prefecture | rhododendron semibarbatum | species | 4 | 0 |
| japan | ibaraki prefecture | rhododendron wadanum | species | 4 | 0 |
| japan | iwate prefecture | rhododendron albrechtii | species | 4 | 0 |
| japan | iwate prefecture | rhododendron japonicum | species | 2 | 0 |
| japan | iwate prefecture | rhododendron nipponicum | species | 2 | 0 |
| japan | kagoshima prefecture | rhododendron eriocarpum | species | 5 | 0 |
| japan | kagoshima prefecture | rhododendron indicum | species | 4 | 0 |
| japan | kagoshima prefecture | rhododendron indicum f. otakumi | forma | 5 | 0 |
| japan | kagoshima prefecture | rhododendron kaempferi | species | 4 | 0 |
| japan | kagoshima prefecture | rhododendron scabrum | species | 2 | 0 |
| japan | kagoshima prefecture | rhododendron weyrichii var. weyrichii | varietas | 2 | 0 |
| japan | kagoshima prefecture | rhododendron yakuinsulare | species | 10 | 0 |
| japan | kagoshima prefecture | rhododendron yakumontanum | species | 2 | 0 |
| japan | kanagawa prefecture | rhododendron dilatatum | species | 3 | 0 |
| japan | kanagawa prefecture | rhododendron indicum | species | 3 | 0 |
| japan | kanagawa prefecture | rhododendron kaempferi | species | 3 | 0 |
| japan | kanagawa prefecture | rhododendron kiyosumense | species | 3 | 0 |
| japan | kanagawa prefecture | rhododendron wadanum | species | 2 | 0 |
| japan | kochi prefecture | rhododendron mucronatum var. ripense | varietas | 2 | 0 |
| japan | kochi prefecture | rhododendron tosaense | species | 2 | 0 |
| japan | kochi prefecture | rhododendron weyrichii | species | 4 | 0 |
| japan | kochi prefecture | rhododendron weyrichii var. weyrichii | varietas | 6 | 0 |
| japan | kyoto prefecture | rhododendron amanoi | species | 5 | 0 |
| japan | kyoto prefecture | rhododendron dilatatum | species | 5 | 0 |
| japan | kyoto prefecture | rhododendron scabrum | species | 5 | 0 |
| japan | kyoto prefecture | rhododendron schlippenbachii | species | 5 | 0 |
| japan | kyoto prefecture | rhododendron serpyllifolium | species | 5 | 0 |
| japan | kyoto prefecture | rhododendron tosaense | species | 5 | 0 |
| japan | kyoto prefecture | rhododendron transiens | species | 1 | 0 |
| japan | kyoto prefecture | rhododendron yedoense var. poukhanense | varietas | 11 | 0 |
| japan | mie prefecture | rhododendron indicum | species | 2 | 0 |
| japan | mie prefecture | rhododendron kiyosumense | species | 2 | 0 |
| japan | mie prefecture | rhododendron macrosepalum | species | 13 | 0 |
| japan | mie prefecture | rhododendron quinquefolium | species | 2 | 0 |
| japan | mie prefecture | rhododendron sanctum | species | 23 | 0 |
| japan | mie prefecture | rhododendron semibarbatum | species | 1 | 0 |
| japan | miyagi ken prefecture | rhododendron kaempferi | species | 6 | 0 |
| japan | miyagi ken prefecture | rhododendron semibarbatum | species | 6 | 0 |
| japan | miyazaki prefecture | rhododendron hyugaense | species | 3 | 0 |
| japan | miyazaki prefecture | rhododendron mayebarae | species | 2 | 0 |
| japan | miyazaki prefecture | rhododendron osuzuyamense | species | 1 | 0 |
| japan | miyazaki prefecture | rhododendron reticulatum | species | 1 | 0 |
| japan | miyazaki prefecture | rhododendron tosaense | species | 2 | 0 |
| japan | nagano prefecture | rhododendron albrechtii | species | 5 | 0 |
| japan | nagano prefecture | rhododendron indicum | species | 2 | 0 |
| japan | nagano prefecture | rhododendron japonicum | species | 4 | 0 |
| japan | nagano prefecture | rhododendron molle | species | 2 | 0 |
| japan | nagano prefecture | rhododendron semibarbatum | species | 4 | 0 |
| japan | nagano prefecture | rhododendron wadanum | species | 8 | 0 |
| japan | nagasaki prefecture | rhododendron reticulatum | species | 1 | 0 |
| japan | niigata prefecture | rhododendron japonicum | species | 2 | 0 |
| japan | okayama prefecture | rhododendron reticulatum | species | 1 | 0 |
| japan | okayama prefecture | rhododendron semibarbatum | species | 2 | 0 |
| japan | okinawa prefecture | rhododendron simsii | species | 2 | 0 |
| japan | saga prefecture | rhododendron reticulatum | species | 2 | 0 |
| japan | saitama prefecture | rhododendron dilatatum var. dilatatum | varietas | 2 | 0 |
| japan | shimane prefecture | rhododendron kaempferi | species | 3 | 0 |
| japan | shimane prefecture | rhododendron reticulatum | species | 3 | 0 |
| japan | shimane prefecture | rhododendron semibarbatum | species | 1 | 0 |
| japan | shizuoka prefecture | rhododendron amagianum | species | 12 | 0 |
| japan | shizuoka prefecture | rhododendron dilatatum var. dilatatum | varietas | 1 | 0 |
| japan | shizuoka prefecture | rhododendron macrosepalum | species | 3 | 0 |
| japan | shizuoka prefecture | rhododendron quinquefolium | species | 1 | 0 |
| japan | shizuoka prefecture | rhododendron reticulatum | species | 2 | 0 |
| japan | shizuoka prefecture | rhododendron sanctum | species | 12 | 0 |
| japan | shizuoka prefecture | rhododendron semibarbatum | species | 1 | 0 |
| japan | tokyo prefecture | rhododendron boninense | species | 7 | 0 |
| japan | tokyo prefecture | rhododendron simsii | species | 5 | 0 |
| japan | tokyo prefecture | rhododendron transiens | species | 4 | 0 |
| japan | tottori prefecture | rhododendron kaempferi | species | 1 | 0 |
| japan | toyama prefecture | rhododendron albrechtii | species | 4 | 0 |
| japan | toyama prefecture | rhododendron brachycarpum | species | 1 | 0 |
| japan | wakayama prefecture | rhododendron indicum | species | 2 | 0 |
| japan | wakayama prefecture | rhododendron macrosepalum | species | 8 | 0 |
| japan | wakayama prefecture | rhododendron weyrichii var. weyrichii | varietas | 2 | 0 |
| japan | yamagata prefecture | rhododendron albrechtii | species | 2 | 0 |
| japan | yamaguchi prefecture | rhododendron macrosepalum | species | 3 | 0 |
| japan | yamaguchi prefecture | rhododendron mucronatum var. ripense | varietas | 5 | 0 |
| japan | yamanashi prefecture | rhododendron semibarbatum | species | 2 | 0 |
| japan | yamanashi prefecture | rhododendron wadanum | species | 4 | 0 |
| latvia | | rhododendron tomentosum | species | 1 | 0 |
| malaysia | sabah | rhododendron acuminatum | species | 2 | 0 |
| malaysia | sabah | rhododendron bagobonum | species | 2 | 0 |
| malaysia | sabah | rhododendron borneense | species | 2 | 0 |
| malaysia | sabah | rhododendron burttii | species | 1 | 0 |
| malaysia | sabah | rhododendron buxifolium | species | 8 | 0 |
| malaysia | sabah | rhododendron cf. cuneifolium snp.28516 | species | 1 | 0 |
| malaysia | sabah | rhododendron cf. rugosum snp.21909 | species | 2 | 0 |
| malaysia | sabah | rhododendron cf. rugosum snp.21918 | species | 2 | 0 |
| malaysia | sabah | rhododendron cf. stapfianum snp.21926 | species | 1 | 0 |
| malaysia | sabah | rhododendron crassifolium | species | 12 | 0 |
| malaysia | sabah | rhododendron cuneifolium | species | 5 | 0 |
| malaysia | sabah | rhododendron ericoides | species | 2 | 0 |
| malaysia | sabah | rhododendron exuberans | species | 2 | 0 |
| malaysia | sabah | rhododendron fallacinum | species | 16 | 0 |
| malaysia | sabah | rhododendron javanicum | species | 6 | 0 |
| malaysia | sabah | rhododendron lowii | species | 4 | 0 |
| malaysia | sabah | rhododendron orbiculatum | species | 4 | 0 |
| malaysia | sabah | rhododendron planecostatum | species | 2 | 0 |
| malaysia | sabah | rhododendron praetervisum | species | 4 | 0 |
| malaysia | sabah | rhododendron rugosum | species | 7 | 0 |
| malaysia | sabah | rhododendron simulans | species | 1 | 0 |
| malaysia | sabah | rhododendron sp. snp.21912 | species | 2 | 0 |
| malaysia | sabah | rhododendron sp. snp.21916 | species | 2 | 0 |
| malaysia | sabah | rhododendron sp. snp.21917 | species | 2 | 0 |
| malaysia | sabah | rhododendron sp. snp.28518 | species | 2 | 0 |
| malaysia | sabah | rhododendron stapfianum | species | 2 | 0 |
| malaysia | sabah | rhododendron stenophyllum | species | 7 | 0 |
| malaysia | sabah | rhododendron suaveolens | species | 10 | 0 |
| nepal | | rhododendron arboreum | species | 1 | 0 |
| pakistan | | rhododendron lepidotum | species | 3 | 0 |
| papua new guinea | | rhododendron sp. pk-2017 | species | 1 | 0 |
| portugal | | rhododendron indicum | species | 2 | 0 |
| russia | | rhododendron dauricum | species | 4 | 0 |
| russia | | rhododendron ledebourii | species | 10 | 0 |
| russia | | rhododendron mucronulatum | species | 3 | 0 |
| russia | | rhododendron sichotense | species | 11 | 0 |
| russia | buryatia republic | rhododendron adamsii | species | 2 | 0 |
| russia | chukotka autonomous okrug | rhododendron camtschaticum subsp. glandulosum | subspecies | 11 | 0 |
| russia | kamchatka krai | rhododendron camtschaticum | species | 11 | 0 |
| russia | kamchatka krai | rhododendron camtschaticum subsp. glandulosum | subspecies | 12 | 0 |
| russia | sakhalin oblast | rhododendron camtschaticum | species | 1 | 0 |
| spain | | rhododendron ponticum | species | 1 | 0 |
| spain | catalonia | rhododendron ferrugineum | species | 4 | 0 |
| sri lanka | | rhododendron arboreum | species | 2 | 0 |
| taiwan | | rhododendron breviperulatum | species | 3 | 0 |
| taiwan | | rhododendron ellipticum | species | 6 | 0 |
| taiwan | | rhododendron formosanum | species | 9 | 2 |
| taiwan | | rhododendron hyperythrum | species | 6 | 0 |
| taiwan | | rhododendron kanehirae | species | 5 | 0 |
| taiwan | | rhododendron kawakamii | species | 2 | 0 |
| taiwan | | rhododendron lasiostylum | species | 1 | 0 |
| taiwan | | rhododendron mariesii | species | 2 | 0 |
| taiwan | | rhododendron morii | species | 5 | 0 |
| taiwan | | rhododendron nakaharae | species | 1 | 0 |
| taiwan | | rhododendron noriakianum | species | 1 | 0 |
| taiwan | | rhododendron oldhamii | species | 8 | 0 |
| taiwan | | rhododendron ovatum | species | 3 | 0 |
| taiwan | | rhododendron pseudochrysanthum | species | 6 | 0 |
| taiwan | | rhododendron rubropilosum | species | 6 | 0 |
| taiwan | | rhododendron rubropunctatum | species | 1 | 0 |
| taiwan | | rhododendron simsii | species | 1 | 0 |
| taiwan | | rhododendron taiwanalpinum | species | 1 | 0 |
| turkey | trabzon province | rhododendron ponticum | species | 0 | 1 |
| united kingdom | | rhododendron hybrid cultivar | species | 8 | 0 |
| united kingdom | | rhododendron maximum | species | 2 | 0 |
| united kingdom | | rhododendron meliphagidum | species | 8 | 0 |
| united kingdom | | rhododendron williamsianum | species | 6 | 0 |
| united kingdom | england | rhododendron ponticum | species | 0 | 1 |
| united kingdom | scotland | rhododendron ponticum | species | 0 | 1 |
| united states | | rhododendron calendulaceum | species | 16 | 0 |
| united states | | rhododendron camtschaticum | species | 7 | 0 |
| united states | | rhododendron edgeworthii | species | 10 | 0 |
| united states | | rhododendron groenlandicum | species | 16 | 0 |
| united states | | rhododendron taxifolium | species | 8 | 0 |
| united states | alaska | rhododendron camtschaticum | species | 52 | 0 |
| united states | alaska | rhododendron camtschaticum subsp. glandulosum | subspecies | 4 | 0 |
| united states | florida | rhododendron simsii | species | 1 | 0 |
| united states | pennsylvania | rhododendron maximum | species | 2 | 0 |
| united states | virginia | rhododendron periclymenoides | species | 5 | 0 |
| united states | virginia | rhododendron prinophyllum | species | 2 | 0 |
| united states | washington | rhododendron williamsianum | species | 2829 | 0 |
| united states | wisconsin | rhododendron groenlandicum | species | 4 | 0 |