The Plant List — A working list for all plant species

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You should refer instead to the current version of The Plant List.

Results

No plant names match your search for Rhododendron liaoxigensis; we will try Rhododendron instead.

2382 plant name records match your search criteria Rhododendron. The results are below.

• Genus Rhododendron is in the family Ericaceae. Species epithets begin with: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

The results can also be downloaded as a CSV file.

See "Status", "Confidence level", "Source" for definitions.

Name	Status	Confi­dence level	Source
Rhododendron aberconwayi Cowan	Accepted		TRO
Rhododendron aberrans Tagg & Forrest	Synonym		TRO
Rhododendron abietifolium Sleumer	Unresolved		WCSP (in review)
Rhododendron achroanthum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron acraium Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron acrocline Sleumer	Unresolved		WCSP (in review)
Rhododendron acrophilum Merr. & Quisumb.	Unresolved		WCSP (in review)
Rhododendron acuminatum Hook.f.	Unresolved		WCSP (in review)
Rhododendron adamsii Rehder	Unresolved		WCSP (in review)
Rhododendron adansonii Pépin	Unresolved		WCSP (in review)
Rhododendron adenanthum M.Y. He	Accepted		TRO
Rhododendron adendobracteatum X.F. Gao & Y. Peng	Unresolved		TRO
Rhododendron adenobracteum X.F.Gao & Y.L.Peng	Unresolved		WCSP (in review)
Rhododendron adenogynum Diels	Accepted		TRO
Rhododendron adenophorum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron adenopodum Franch.	Accepted		TRO
Rhododendron adenostemonum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron adenosum Davidian	Accepted		TRO
Rhododendron adinophyllum Merr.	Unresolved		WCSP (in review)
Rhododendron admirabile Balf. f. & Forrest	Synonym		TRO
Rhododendron adoxum Balf. f. & Forrest	Synonym		TRO
Rhododendron adroserum Balf. f. & Forrest	Synonym		TRO
Rhododendron aechmophyllum Balf. f. & Forrest	Synonym		TRO
Rhododendron aemulorum Balf. f.	Synonym		TRO
Rhododendron aequabile J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron aeruginosum Hook. f.	Synonym		TRO
Rhododendron afghanicum Aitch. & Hemsl.	Unresolved		WCSP (in review)
Rhododendron aganniphum Balf. f. & Kingdon-Ward	Accepted		TRO
Rhododendron aganniphum var. aganniphum	Accepted		TRO
Rhododendron aganniphum var. flavorufum (Balf. f. & Forrest) D.F. Chamb.	Accepted		TRO
Rhododendron aganniphum var. glaucopeplum (Balf. f. & Forrest) T.L. Ming	Synonym		TRO
Rhododendron aganniphum var. schizopeplum (Balf. f. & Forrest) T.L. Ming	Accepted		TRO
Rhododendron agapetum Balf. f. & Kingdon-Ward	Synonym		TRO
Rhododendron agastum Balf. f. & W.W. Sm.	Accepted		TRO
Rhododendron agastum var. pennivenium (Balf. f. & Forrest) T.L. Ming	Accepted		TRO
Rhododendron agathodaemonis J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron agetum Balf. f. & Forrest	Synonym		TRO
Rhododendron agglutinatum Balf. f. & Forrest	Synonym		TRO
Rhododendron aiolopeplum Balf. f. & Forrest	Synonym		TRO
Rhododendron aiolosalpinx Balf. f. & Farrer	Synonym		TRO
Rhododendron aischropeplum Balf. f. & Forrest	Synonym		TRO
Rhododendron alabamense Rehder	Synonym		TRO
Rhododendron albertsenianum Forrest	Accepted		TRO
Rhododendron albescens W.Bull	Unresolved		WCSP (in review)
Rhododendron × albicans Waterer ex Zabel	Unresolved		WCSP (in review)
Rhododendron albicaule H. Lév.	Synonym		TRO
Rhododendron albiflorum Hook.	Synonym		TRO
Rhododendron albiflorum var. warrenii (A. Nelson) M.A. Lane	Synonym		TRO
Rhododendron alborugosum Argent & J.Dransf.	Unresolved		WCSP (in review)
Rhododendron albrechtii Maxim.	Unresolved		WCSP (in review)
Rhododendron album Buch.-Ham.	Synonym		TRO
Rhododendron algarvense Page	Unresolved		WCSP (in review)
Rhododendron alpicola Rehder & E.H. Wilson	Synonym		TRO
Rhododendron alpicola var. strictum Rehder & E.H. Wilson	Synonym		TRO
Rhododendron × alstroemerioides Lem.	Unresolved		WCSP (in review)
Rhododendron altaclerense Lindl.	Unresolved		WCSP (in review)
Rhododendron alternans Sleumer	Unresolved		WCSP (in review)
Rhododendron alticola Sleumer	Unresolved		WCSP (in review)
Rhododendron alutaceum Balf. f. & W.W. Sm.	Accepted		TRO
Rhododendron alutaceum var. alutaceum	Accepted		TRO
Rhododendron alutaceum var. iodes (Balf. f. & Forrest) D.F. Chamb.	Accepted		TRO
Rhododendron alutaceum var. russotinctum (Balf. f. & Forrest) D.F. Chamb.	Accepted		TRO
Rhododendron amabile Sleumer	Unresolved		WCSP (in review)
Rhododendron amagianum (Makino) Makino ex H.Hara	Unresolved		WCSP (in review)
Rhododendron amakusaense (Takeda ex T.Yamaz.) T.Yamaz.	Unresolved		WCSP (in review)
Rhododendron amamiense Ohwi	Synonym		TRO
Rhododendron amandum Cowan	Accepted		TRO
Rhododendron amanoi Ohwi	Unresolved		WCSP (in review)
Rhododendron amaurophyllum Balf. f. & Forrest	Synonym		TRO
Rhododendron ambiguum Hemsl.	Accepted		TRO
Rhododendron amesiae Rehder & E.H. Wilson	Accepted		TRO
Rhododendron amoenum Planch.	Unresolved		WCSP (in review)
Rhododendron amphichlorum Ingram	Unresolved		WCSP (in review)
Rhododendron amundsenianum Hand.-Mazz.	Accepted		TRO
Rhododendron andersonii Ridl.	Unresolved		WCSP (in review)
Rhododendron angiense J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron angulatum J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron angustifolium Hoppe	Unresolved		WCSP (in review)
Rhododendron anhweiense E.H. Wilson	Synonym		TRO
Rhododendron annae Franch.	Accepted		TRO
Rhododendron annae subsp. laxiflorum (Balf. f. & Forrest) T.L. Ming	Accepted		TRO
Rhododendron annamense Rehder	Unresolved		WCSP (in review)
Rhododendron × anneliesae Rehder	Unresolved		WCSP (in review)
Rhododendron anthopogon D. Don	Accepted		TRO
Rhododendron anthopogon var. album Davidian	Synonym		TRO
Rhododendron anthopogon var. haemonium (Balf. f. & R.E. Cooper) Cowan & Davidian	Accepted		TRO
Rhododendron anthopogon subsp. hypenanthum (Balf. f.) Cullen	Synonym		TRO
Rhododendron anthopogon var. hypenanthum (Balf. f.) H. Hara	Synonym		TRO
Rhododendron anthopogonoides Maxim.	Accepted		TRO
Rhododendron anthopogonoides subsp. hoi (W.P. Fang) W.P. Fang	Synonym		TRO
Rhododendron anthosphaerum Diels	Accepted		TRO
Rhododendron anthosphaerum var. eritimum (Balf. f. & W.W. Sm.) Davidian	Synonym		TRO
Rhododendron anthosphaerum subsp. hylothreptum (Balf. f. & W.W. Sm.) Tagg	Synonym		TRO
Rhododendron aperantum Balf. f. & Kingdon-Ward	Accepted		TRO
Rhododendron apiculatum Rehder & E.H. Wilson	Synonym		TRO
Rhododendron apiense Argent	Unresolved		WCSP (in review)
Rhododendron apoanum Stein	Unresolved		WCSP (in review)
Rhododendron apodectum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron apricum P.C. Tam	Accepted		TRO
Rhododendron apricum var. falcinellum P.C. Tam	Synonym		TRO
Rhododendron arahiforme Balf.f. & Forrest	Unresolved		WCSP (in review)
Rhododendron araiophyllum Balf. f. & W.W. Sm.	Accepted		TRO
Rhododendron araiophyllum subsp. lapidosum (T.L. Ming) M.Y. Fang	Accepted		TRO
Rhododendron araliiforme Balf. f. & Forrest	Synonym		TRO
Rhododendron arborescens (Pursh) Torr.	Accepted		TRO
Rhododendron arboreum Sm.	Accepted		TRO
Rhododendron arboreum var. album Wall.	Synonym		TRO
Rhododendron arboreum var. arboreum	Accepted		TRO
Rhododendron arboreum subsp. campbelliae (Hook. f.) Tagg	Synonym		TRO
Rhododendron arboreum subsp. cinnamomeum (Wall. ex G. Don) Tagg	Synonym		TRO
Rhododendron arboreum var. cinnamomeum (Wall. ex G. Don) Lindl.	Accepted		TRO
Rhododendron arboreum subsp. delavayi (Franch.) D.F. Chamb.	Synonym		TRO
Rhododendron arboreum var. peramoenum (Balf. f. & Forrest) D.F. Chamb.	Synonym		TRO
Rhododendron arboreum var. roseum Lindl.	Accepted		TRO
Rhododendron × arbutifolium Rehder	Unresolved		WCSP (in review)
Rhododendron archboldianum Sleumer	Unresolved		WCSP (in review)
Rhododendron arfskianum Becc.	Unresolved		WCSP (in review)
Rhododendron argenteum Hook. f.	Synonym		TRO
Rhododendron argipeplum Balf. f. & R.E. Cooper	Accepted		TRO
Rhododendron argyi H. Lév.	Synonym		TRO
Rhododendron argyrophyllum Franch.	Accepted		TRO
Rhododendron argyrophyllum subsp. argyrophyllum	Accepted		TRO
Rhododendron argyrophyllum var. cupulare Rehder & E.H. Wilson	Synonym		TRO
Rhododendron argyrophyllum subsp. hejiangense W.P. Fang	Synonym		TRO
Rhododendron argyrophyllum subsp. hypoglaucum (Hemsl.) D.F. Chamb.	Synonym		TRO
Rhododendron argyrophyllum var. leiandrum Hutch.	Synonym		TRO
Rhododendron argyrophyllum var. nankingense Cowan	Synonym		TRO
Rhododendron argyrophyllum subsp. nankingense (Cowan) D.F. Chamb.	Accepted		TRO
Rhododendron argyrophyllum var. omeiense Rehder & E.H. Wilson	Synonym		TRO
Rhododendron argyrophyllum subsp. omeiense (Rehder & E.H. Wilson) D.F. Chamb.	Accepted		TRO
Rhododendron aristatum Royle	Unresolved		WCSP (in review)
Rhododendron arizelum Balf. f. & Forrest	Accepted		TRO
Rhododendron armitii F.M.Bailey	Unresolved		WCSP (in review)
Rhododendron aromaticum Wall.	Unresolved		WCSP (in review)
Rhododendron artosquameum Balf. f. & Forrest	Synonym		TRO
Rhododendron arunachalense D.F.Chamb. & Rae	Unresolved		WCSP (in review)
Rhododendron × ashitakayamense Sugim.	Unresolved		WCSP (in review)
Rhododendron ashleyi Coker	Unresolved		WCSP (in review)
Rhododendron asmenistum Balf. f. & Forrest	Synonym		TRO
Rhododendron asparagoides Wernham	Unresolved		WCSP (in review)
Rhododendron asperrimum Sleumer	Unresolved		WCSP (in review)
Rhododendron asperulum Hutch. & Kingdon-Ward	Accepted		TRO
Rhododendron asperum J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron assamicum Kingdon-Ward	Unresolved		WCSP (in review)
Rhododendron assamicum auct.	Unresolved		WCSP (in review)
Rhododendron asteium Balf. f. & Forrest	Synonym		TRO
Rhododendron asterochnoum Diels	Accepted		TRO
Rhododendron astrapiae F.Först.	Unresolved		WCSP (in review)
Rhododendron astrocalyx Balf. f. & Forrest	Synonym		TRO
Rhododendron atentsiense Hand.-Mazz.	Synonym		TRO
Rhododendron atjehense Sleumer	Unresolved		WCSP (in review)
Rhododendron atlanticum (Ashe) Rehder	Accepted		TRO
Rhododendron atropunicum H.P. Yang	Accepted		TRO
Rhododendron atropurpureum Sleumer	Unresolved		WCSP (in review)
Rhododendron atrovirens Franch.	Accepted		TRO
Rhododendron atroviride Dunn	Unresolved		WCSP (in review)
Rhododendron aucklandii Hook. f.	Synonym		TRO
Rhododendron aucubifolium Hemsl.	Synonym		TRO
Rhododendron augustinii Hemsl.	Accepted		TRO
Rhododendron augustinii subsp. augustinii	Accepted		TRO
Rhododendron augustinii subsp. chasmanthum (Diels) Cullen	Accepted		TRO
Rhododendron augustinii var. chasmanthum (Diels) R.C. Fang	Synonym		TRO
Rhododendron augustinii f. grandifolum Franch.	Synonym		TRO
Rhododendron augustinii subsp. hardyi (Davidian) Cullen	Synonym		TRO
Rhododendron augustinii f. hardyi (Davidian) R.C. Fang	Synonym		TRO
Rhododendron augustinii var. rubrum Davidian	Synonym		TRO
Rhododendron augustinii subsp. rubrum (Davidian) Cullen	Synonym		TRO
Rhododendron augustinii f. rubrum (Davidian) R.C. Fang	Synonym		TRO
Rhododendron augustinii f. subglabrum Franch.	Synonym		TRO
Rhododendron augustinii var. yui W.P. Fang	Synonym		TRO
Rhododendron aureum Georgi	Accepted		TRO
Rhododendron aureum Franch.	Synonym		TRO
Rhododendron auriculatum Hemsl.	Accepted		TRO
Rhododendron aurigeranum Sleumer	Unresolved		WCSP (in review)
Rhododendron auritum Tagg	Accepted		TRO
Rhododendron australe Balf. f. & Forrest	Synonym		TRO
Rhododendron austrinum (Small) Rehder	Accepted		TRO
Rhododendron austrokiusianum Hatus.	Unresolved		WCSP (in review)
Rhododendron axium Balf. f. & Forrest	Synonym		TRO
Rhododendron azaleoides Desf.	Unresolved		WCSP (in review)
Rhododendron bachii H. Lév.	Accepted		TRO
Rhododendron baconii Argent, A.L.Lamb & Phillipps	Unresolved		WCSP (in review)
Rhododendron baenitzianum Lauterb.	Unresolved		WCSP (in review)
Rhododendron baeticum Boiss. & Reut.	Unresolved		WCSP (in review)
Rhododendron bagobonum H.F.Copel.	Unresolved		WCSP (in review)
Rhododendron baileyi Balf. f.	Accepted		TRO
Rhododendron bainbridgeanum Tagg & Forrest	Accepted		TRO
Rhododendron bakeri (W.P.Lemmon & McKay) E.P.Hume	Unresolved		WCSP (in review)
Rhododendron balangense W.P. Fang	Accepted		TRO
Rhododendron balfourianum Diels	Accepted		TRO
Rhododendron × balsaminiflorum T.Moore	Unresolved		WCSP (in review)
Rhododendron bamaense Z.J. Zhao	Accepted		TRO
Rhododendron banghamiorum (J.J.Sm.) Sleumer	Unresolved		WCSP (in review)
Rhododendron barbatum Wall. ex G. Don	Accepted		TRO
Rhododendron barkamense D.F. Chamb.	Accepted		TRO
Rhododendron basfordii Davidian	Unresolved		WCSP (in review)
Rhododendron basilicum Balf. f. & W.W. Sm.	Accepted		TRO
Rhododendron basirotundatum J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron batangense Balf. f.	Synonym		TRO
Rhododendron batemanii Hook.f.	Unresolved		WCSP (in review)
Rhododendron × bathyphyllum Balf. f. & Forrest	Accepted		TRO
Rhododendron bauhiniiflorum Watt ex Hutch.	Synonym		TRO
Rhododendron beanianum Cowan	Accepted		TRO
Rhododendron beanianum var. compactum Cowan	Synonym		TRO
Rhododendron beccarii Sleumer	Unresolved		WCSP (in review)
Rhododendron beesianum Diels	Accepted		TRO
Rhododendron beimaense Balf. f. & Forrest	Synonym		TRO
Rhododendron bellissimum D.F. Chamb.	Accepted		TRO
Rhododendron bellum W.P. Fang & G.Z. Li	Synonym		TRO
Rhododendron bellum H.P. Yang	Synonym		TRO
Rhododendron benthamianum Hemsl.	Synonym		TRO
Rhododendron bergii Davidian	Synonym		TRO
Rhododendron beyerinckianum Koord.	Unresolved		WCSP (in review)
Rhododendron bhotanicum C.B. Clarke	Synonym		TRO
Rhododendron bhutanense D.G.Long & Bowes Lyon	Unresolved		WCSP (in review)
Rhododendron bicolor P.C. Tam	Synonym		TRO
Rhododendron bicorniculatum P.C. Tam	Synonym		TRO
Rhododendron bigener Steud.	Unresolved		WCSP (in review)
Rhododendron bijiangense T.L. Ming	Accepted		TRO
Rhododendron bivelatum Balf. f.	Accepted		TRO
Rhododendron blackii Sleumer	Unresolved		WCSP (in review)
Rhododendron blandfordiiflorum Hook.	Unresolved		WCSP (in review)
Rhododendron blandinianum Martrin-Donos	Unresolved		WCSP (in review)
Rhododendron blandulum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron blepharocalyx Franch.	Synonym		TRO
Rhododendron blinii H. Lév.	Synonym		TRO
Rhododendron bloembergenii Sleumer	Unresolved		WCSP (in review)
Rhododendron blumei Nutt.	Unresolved		WCSP (in review)
Rhododendron bodenii Wernham	Unresolved		WCSP (in review)
Rhododendron bodinieri Franch.	Synonym		TRO
Rhododendron boninense Nakai	Unresolved		TRO
Rhododendron bonvalotii Bureau & Franch.	Accepted		TRO
Rhododendron boothii Nutt.	Accepted		TRO
Rhododendron borneense (J.J.Sm.) Argent, A.L.Lamb & Phillipps	Unresolved		WCSP (in review)
Rhododendron brachyandrum Balf. f. & Forrest	Synonym		TRO
Rhododendron brachyantherum Warb. ex P.Sarasin & Sarasin	Unresolved		WCSP (in review)
Rhododendron brachyanthum Franch.	Accepted		TRO
Rhododendron brachyanthum var. hypolepidotum Franch.	Synonym		TRO
Rhododendron brachyanthum subsp. hypolepidotum (Franch.) Cullen	Accepted		TRO
Rhododendron brachycarpum auct.	Synonym		TRO
Rhododendron brachygynum H.F.Copel.	Unresolved		WCSP (in review)
Rhododendron brachypodarium Sleumer	Unresolved		WCSP (in review)
Rhododendron brachypodum W.P. Fang & P.S. Liu	Accepted		TRO
Rhododendron brachysiphon Balf. f.	Synonym		TRO
Rhododendron brachystylum Balf. f. & Kingdon-Ward	Synonym		TRO
Rhododendron bracteatum Rehder & E.H. Wilson	Accepted		TRO
Rhododendron brassii Sleumer	Unresolved		WCSP (in review)
Rhododendron brettii Hemsl. & E.H. Wilson	Synonym		TRO
Rhododendron brevicaudatum R.C. Fang & S.S. Chang	Accepted		TRO
Rhododendron brevinerve Chun & W.P. Fang	Accepted		TRO
Rhododendron breviperulatum Hayata	Accepted		TRO
Rhododendron brevipes Sleumer	Unresolved		WCSP (in review)
Rhododendron brevipetiolatum M.Y. Fang	Accepted		TRO
Rhododendron brevistylum Franch.	Synonym		TRO
Rhododendron brevitubum Balf. f. & R.E. Cooper	Synonym		TRO
Rhododendron breynii Planch.	Synonym		TRO
Rhododendron brookeanum H.Low ex Lindl.	Unresolved		WCSP (in review)
Rhododendron brunneifolium Balf. f. & Forrest	Synonym		TRO
Rhododendron bryophilum Sleumer	Unresolved		WCSP (in review)
Rhododendron buergeri Miq.	Unresolved		WCSP (in review)
Rhododendron bullatum Franch.	Synonym		TRO
Rhododendron bullifolium Sleumer	Unresolved		WCSP (in review)
Rhododendron bulu Hutch.	Accepted		TRO
Rhododendron × bungonishikii Komatsu	Unresolved		WCSP (in review)
Rhododendron bureavii Franch.	Accepted		TRO
Rhododendron bureavioides Balf. f.	Synonym		TRO
Rhododendron burjaticum Malyschev	Unresolved		WCSP (in review)
Rhododendron burmanicum Hutch.	Unresolved		WCSP (in review)
Rhododendron burmanni G.Don	Unresolved		WCSP (in review)
Rhododendron burriflorum Balf. f. & Forrest	Synonym		TRO
Rhododendron burtii P.Woods	Unresolved		WCSP (in review)
Rhododendron buruense J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron butyricum Kingdon-Ward	Unresolved		TRO
Rhododendron buxifolium H.Low ex Hook.f.	Unresolved		WCSP (in review)
Rhododendron buxoides Sleumer	Unresolved		WCSP (in review)
Rhododendron caeruleoglaucum Balf. f. & Forrest	Synonym		TRO
Rhododendron caeruleum H. Lév.	Synonym		TRO
Rhododendron caesium Hutch.	Accepted		TRO
Rhododendron caespitosum Sleumer	Unresolved		WCSP (in review)
Rhododendron caespitulum P.C. Tam	Synonym		TRO
Rhododendron calceolarioides Wernham	Unresolved		WCSP (in review)
Rhododendron calcicola Millais	Unresolved		WCSP (in review)
Rhododendron calciphilum Hutch. & Kingdon-Ward	Synonym		TRO
Rhododendron calendulaceum (Michx.) Torr.	Accepted		TRO
Rhododendron californicum Hook.	Synonym		TRO
Rhododendron caliginis Kores	Unresolved		WCSP (in review)
Rhododendron calleryi Planch.	Synonym		TRO
Rhododendron callichilioides Wernham	Unresolved		WCSP (in review)
Rhododendron callimorphum Balf. f. & W.W. Sm.	Accepted		TRO
Rhododendron callimorphum var. callimorphum	Accepted		TRO
Rhododendron callimorphum var. myiagrum (Balf. f. & Forrest) D.F. Chamb.	Accepted		TRO
Rhododendron calocodon Ridl.	Unresolved		WCSP (in review)
Rhododendron calophyllum Nutt.	Synonym		TRO
Rhododendron calophytum Franch.	Accepted		TRO
Rhododendron calophytum var. jinfuense Fang & W.K. Hu	Accepted		TRO
Rhododendron calophytum subsp. jinfuense Fang ex M.Y. Fang	Synonym		TRO
Rhododendron calophytum var. openshawianum (Rehder & E.H. Wilson) D.F. Chamb.	Accepted		TRO
Rhododendron calosanthes Sleumer	Unresolved		WCSP (in review)
Rhododendron calostrotum Balf. f. & Kingdon-Ward	Accepted		TRO
Rhododendron calostrotum var. calciphilum (Hutch. & Kingdon-Ward) Davidian	Accepted		TRO
Rhododendron calostrotum var. calostrotum	Accepted		TRO
Rhododendron calostrotum subsp. keleticum (Balf. f. & Forrest) Cullen	Synonym		TRO
Rhododendron calostrotum subsp. riparioides Cullen	Synonym		TRO
Rhododendron calostrotum var. riparioides (Cullen) R.C. Fang	Synonym		TRO
Rhododendron calostrotum subsp. riparium (Kingdon-Ward) Cullen	Synonym		TRO
Rhododendron caloxanthum Balf. f. & Farrer	Synonym		TRO
Rhododendron calvescens Balf. f. & Forrest	Accepted		TRO
Rhododendron calvescens var. duseimatum (Balf. f. & Forrest) D.F. Chamb.	Accepted		TRO
Rhododendron calycinum Planch.	Unresolved		WCSP (in review)
Rhododendron camelliiflorum Hook. f.	Accepted		TRO
Rhododendron campanulatum D. Don	Accepted		TRO
Rhododendron campanulatum var. aeruginosum (Hook. f.) Cowan & Davidian	Synonym		TRO
Rhododendron campanulatum subsp. aeruginosum (Hook. f.) D.F. Chamb.	Accepted		TRO
Rhododendron campanulatum var. wallichii Hook.	Synonym		TRO
Rhododendron campbelliae Hook. f.	Synonym		TRO
Rhododendron campylocarpum Hook. f.	Accepted		TRO
Rhododendron campylocarpum subsp. caloxanthum (Balf. f. & Farrer) D.F. Chamb.	Accepted		TRO
Rhododendron campylocarpum var. orbiculare Demoly	Synonym		TRO
Rhododendron campylocarpum subsp. telopeum (Balf. f. & Forrest) D.F. Chamb.	Synonym		TRO
Rhododendron campylogynum Franch.	Accepted		TRO
Rhododendron campylogynum var. celsum Davidian	Synonym		TRO
Rhododendron campylogynum var. charapoeum (Balf. f. & Farrer) Davidian	Accepted		TRO
Rhododendron campylogynum var. cremastum (Balf. f. & Forrest) Davidian	Synonym		TRO
Rhododendron campylogynum var. myrtilloides (Balf. f. & Kingdon-Ward) Davidian	Synonym		TRO
Rhododendron camtschaticum Pall.	Synonym		TRO
Rhododendron camtschaticum subsp. glandulosum (Standl. ex Small) Hultén	Synonym		TRO
Rhododendron camtschaticum var. glandulosum (Standl. ex Small) B. Boivin	Unresolved		TRO
Rhododendron camtschaticum var. pumilum E.A. Busch	Synonym		TRO
Rhododendron canadense (L.) Britton, Sterns & Poggenb.	Accepted		TRO
Rhododendron canadense (L.) Torr.	Synonym		TRO
Rhododendron candelabrum Hook.f.	Unresolved		WCSP (in review)
Rhododendron candidapiculatum Wernham	Unresolved		WCSP (in review)
Rhododendron candidum Rehder	Unresolved		WCSP (in review)
Rhododendron canescens (Michx.) Sweet	Synonym		TRO
Rhododendron canescens (Michx.) Porter	Synonym		TRO
Rhododendron cantabile Balf. f. ex Hutch.	Synonym		TRO
Rhododendron capellae Kores	Unresolved		WCSP (in review)
Rhododendron capitatum Maxim.	Accepted		TRO
Rhododendron cardiobasis Sleumer	Synonym		TRO
Rhododendron cardioeides Balf. f. & Forrest	Synonym		TRO
Rhododendron cardiohasis Sleumer	Unresolved		WCSP (in review)
Rhododendron × carnarvonii Sweet	Unresolved		WCSP (in review)
Rhododendron carolinianum Rehder	Unresolved		WCSP (in review)
Rhododendron carrii Sleumer	Unresolved		WCSP (in review)
Rhododendron carringtoniae F.Muell.	Unresolved		WCSP (in review)
Rhododendron carstensense Wernham	Unresolved		WCSP (in review)
Rhododendron × cartonianum DC.	Unresolved		WCSP (in review)
Rhododendron caryophyllum Hayata	Synonym		TRO
Rhododendron catacosmum Balf. f. ex Tagg	Accepted		TRO
Rhododendron catanduanense Merr. ex H.F.Copel.	Unresolved		WCSP (in review)
Rhododendron catapastum Balf. f. & Forrest	Synonym		TRO
Rhododendron catawbiense Michx.	Synonym		TRO
Rhododendron catesbaei J.Forbes	Unresolved		WCSP (in review)
Rhododendron catesbaeum Dum.Cours.	Unresolved		WCSP (in review)
Rhododendron caucaseum Sims	Unresolved		WCSP (in review)
Rhododendron caucasicum Pall.	Unresolved		WCSP (in review)
Rhododendron cavaleriei H. Lév.	Accepted		TRO
Rhododendron cavaleriei var. chaffanjonii H. Lév.	Synonym		TRO
Rhododendron × cavronii André	Unresolved		WCSP (in review)
Rhododendron celebicum DC.	Unresolved		WCSP (in review)
Rhododendron cephalanthoides Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron cephalanthum Franch.	Accepted		TRO
Rhododendron cephalanthum var. platyphyllum Franch. ex Diels	Synonym		TRO
Rhododendron cephalanthum subsp. platyphyllum (Balf. f. & W.W. Sm.) Cullen	Synonym		TRO
Rhododendron cephalthoides Balf.f. & W.W.Sm.	Unresolved		WCSP (in review)
Rhododendron ceraceum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron cerasiflorum Kingdon-Ward	Unresolved		WCSP (in review)
Rhododendron cerasinum Tagg	Accepted		TRO
Rhododendron cerinum Balf. f. & Forrest	Synonym		TRO
Rhododendron cerochitum Balf. f. & Forrest	Synonym		TRO
Rhododendron chaetomallum Balf. f. & Forrest	Synonym		TRO
Rhododendron chaetomallum var. glaucescens Tagg & Forrest	Synonym		TRO
Rhododendron chaetomallum var. hemigymnum Tagg & Forrest	Synonym		TRO
Rhododendron chaffanjonii H.Lév. ex Hutch.	Unresolved		WCSP (in review)
Rhododendron chalarocladum Balf. f. & Forrest	Synonym		TRO
Rhododendron chamaecistus L.	Synonym		TRO
Rhododendron chamaepitys Sleumer	Unresolved		WCSP (in review)
Rhododendron chamaethomsonii (Tagg) Cowan & Davidian	Accepted		TRO
Rhododendron chamaethomsonii var. chamaedoron (Tagg & Forrest) D.F. Chamb.	Accepted		TRO
Rhododendron chamaethomsonii var. chamaethauma (Tagg) Cowan & Davidian	Accepted		TRO
Rhododendron chamaethomsonii var. chamaethomsonii	Accepted		TRO
Rhododendron chamaetortum Balf. f. & Kingdon-Ward	Synonym		TRO
Rhododendron chamaezelum Balf. f. & Forrest	Accepted		TRO
Rhododendron chameunum Balf. f. & Forrest	Synonym		TRO
Rhododendron championiae Hook.	Accepted		TRO
Rhododendron championiae var. ovatifolium P.C. Tam	Synonym		TRO
Rhododendron changii (W.P. Fang) W.P. Fang	Accepted		TRO
Rhododendron chaoanense T.C. Wu & P.C. Tam	Accepted		TRO
Rhododendron chapaense Dop	Synonym		TRO
Rhododendron chapmanii (Alph. Wood) A. Gray	Synonym		TRO
Rhododendron × charadzeae A.P.Khokhr. & Mazurenko	Unresolved		WCSP (in review)
Rhododendron charapoeum Balf. f. & Farrer	Synonym		TRO
Rhododendron charianthum Hutch.	Synonym		TRO
Rhododendron charidotes Balf. f. & Farrer	Synonym		TRO
Rhododendron charitopes Balf. f. & Farrer	Accepted		TRO
Rhododendron charitopes subsp. tsangpoense (Kingdon-Ward) Cullen	Accepted		TRO
Rhododendron charitostreptum Balf.f. & Kingdon-Ward	Unresolved		WCSP (in review)
Rhododendron chartophyllum Franch.	Synonym		TRO
Rhododendron chartophyllum f. praecox Diels	Synonym		TRO
Rhododendron chasmanthoides Balf. f. & Forrest	Synonym		TRO
Rhododendron chasmanthum Diels	Synonym		TRO
Rhododendron chawchiense Balf. f. & Farrer	Synonym		TRO
Rhododendron cheilanthum Balf. f. & Forrest	Synonym		TRO
Rhododendron chengianum W.P. Fang	Synonym		TRO
Rhododendron chengshienianum W.P. Fang	Synonym		TRO
Rhododendron chevalieri Dop ex A.Chev.	Unresolved		WCSP (in review)
Rhododendron chienianum W.P. Fang	Synonym		TRO
Rhododendron chihsinianum Chun & W.P. Fang	Accepted		TRO
Rhododendron chilanshanense Kurashige	Accepted		TRO
Rhododendron chionanthum Tagg & Forrest	Accepted		TRO
Rhododendron chionophyllum Diels	Synonym		TRO
Rhododendron chlanidotum Balf. f. & Forrest	Synonym		TRO
Rhododendron chloranthum Balf. f. & Forrest	Synonym		TRO
Rhododendron chlorops Stair	Unresolved		WCSP (in review)
Rhododendron chlorops Cowan	Unresolved		WCSP (in review)
Rhododendron christi F.Först.	Unresolved		WCSP (in review)
Rhododendron christianae Sleumer	Unresolved		WCSP (in review)
Rhododendron chrysanthum Pall.	Synonym		TRO
Rhododendron chryseum Balf. f. & Kingdon-Ward	Synonym		TRO
Rhododendron chrysocalyx H. Lév. & Vaniot	Accepted		TRO
Rhododendron chrysocalyx var. chrysocalyx	Accepted		TRO
Rhododendron chrysocalyx var. xiushanense (W.P. Fang) M.Y. He	Accepted		TRO
Rhododendron chrysodoron Tagg ex Hutch.	Accepted		TRO
Rhododendron chrysodorum W.W.Sm. ex Stair	Unresolved		WCSP (in review)
Rhododendron chrysolepis Hutch. & Kingdon-Ward	Unresolved		WCSP (in review)
Rhododendron chrysopeplon Sleumer	Unresolved		WCSP (in review)
Rhododendron × chukirishima T.Yamaz.	Unresolved		WCSP (in review)
Rhododendron chunienii Chun & W.P. Fang	Accepted		TRO
Rhododendron chunii W.P. Fang	Accepted		TRO
Rhododendron ciliatopedicellatum Hayata	Synonym		TRO
Rhododendron ciliatum Hook. f.	Accepted		TRO
Rhododendron ciliicalyx Franch.	Accepted		TRO
Rhododendron ciliicalyx subsp. ciliicalyx	Accepted		TRO
Rhododendron ciliicalyx subsp. lyi (H. Lév.) R.C. Fang	Accepted		TRO
Rhododendron ciliilobum Sleumer	Unresolved		WCSP (in review)
Rhododendron ciliipes Hutch.	Accepted		TRO
Rhododendron × cilipinense S.Bowler	Unresolved		WCSP (in review)
Rhododendron cinchoniflorum Sleumer	Unresolved		WCSP (in review)
Rhododendron cinerascens Sleumer	Unresolved		WCSP (in review)
Rhododendron cinereoserratum P.C. Tam	Synonym		TRO
Rhododendron cinnabarinum Hook. f.	Accepted		TRO
Rhododendron cinnabarinum var. purpurellum Cowan	Synonym		TRO
Rhododendron cinnabarinum var. roylei (Hook. f.) Hutch.	Accepted		TRO
Rhododendron cinnabarinum subsp. tamaense (Davidian) Cullen	Accepted		TRO
Rhododendron cinnabarinum subsp. xanthocodon (Hutch.) Cullen	Synonym		TRO
Rhododendron cinnamomeum Wall. ex G. Don	Synonym		TRO
Rhododendron circinnatum Cowan & Kingdon-Ward	Accepted		TRO
Rhododendron cistiflorum St.-Lag.	Unresolved		WCSP (in review)
Rhododendron citriniflorum Balf. f. & Forrest	Accepted		TRO
Rhododendron citriniflorum subsp. aureolum Cowan	Synonym		TRO
Rhododendron citriniflorum var. citriniflorum	Accepted		TRO
Rhododendron citriniflorum subsp. horaeum (Balf. f. & Forrest) Cowan	Synonym		TRO
Rhododendron citriniflorum var. horaeum (Balf. f. & Forrest) D.F. Chamb.	Accepted		TRO
Rhododendron clementinae Forrest	Accepted		TRO
Rhododendron clementis Merr.	Unresolved		WCSP (in review)
Rhododendron × clivianum J.Jay Sm.	Unresolved		WCSP (in review)
Rhododendron × clivianum auct.	Unresolved		WCSP (in review)
Rhododendron clivicolum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron cloiophorum Balf. f. & Forrest	Synonym		TRO
Rhododendron cloiophorum subsp. asmenistum (Balf. f. & Forrest) Tagg	Synonym		TRO
Rhododendron cloiophorum subsp. leucopetalum (Balf. f. & Forrest) Tagg	Synonym		TRO
Rhododendron cloiophorum var. leucopetalum (Balf. f. & Forrest) Davidian	Synonym		TRO
Rhododendron cloiophorum subsp. mannophorum (Balf. f. & Forrest) Tagg	Synonym		TRO
Rhododendron cloiophorum var. mannophorum (Balf. f. & Forrest) Davidian	Synonym		TRO
Rhododendron cloiophorum subsp. roseotinctum (Balf. f. & Forrest) Tagg	Synonym		TRO
Rhododendron cloiophorum var. roseotinctum (Balf. f. & Forrest) Davidian	Synonym		TRO
Rhododendron coccinopeplum Balf. f. & Forrest	Synonym		TRO
Rhododendron codonanthum Balf. f. & Forrest	Accepted		TRO
Rhododendron coelicum Balf. f. & Farrer	Accepted		TRO
Rhododendron coeloneurum Diels	Accepted		TRO
Rhododendron coelorum Wernham	Unresolved		WCSP (in review)
Rhododendron coenenii J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron collettianum Aitch. & Hemsl.	Unresolved		WCSP (in review)
Rhododendron colletum Balf. f. & Forrest	Synonym		TRO
Rhododendron columbianum (Piper) Harmaja	Accepted		TRO
Rhododendron comisteum Balf. f. & Forrest	Accepted		TRO
Rhododendron commodum Balf. f. & Forrest	Synonym		TRO
Rhododendron commonae F.Först.	Unresolved		WCSP (in review)
Rhododendron commutatum Sleumer	Unresolved		WCSP (in review)
Rhododendron compactum Hutch.	Synonym		TRO
Rhododendron comparabile Sleumer	Unresolved		WCSP (in review)
Rhododendron complexum Balf. f. & W.W. Sm.	Accepted		TRO
Rhododendron comptum C.H.Wright	Unresolved		WCSP (in review)
Rhododendron concatenans Hutch.	Synonym		TRO
Rhododendron concinnoides Hutch. & Kingdon-Ward	Unresolved		WCSP (in review)
Rhododendron concinnum Hemsl.	Accepted		TRO
Rhododendron concinnum var. benthamianum (Hemsl.) Davidian	Synonym		TRO
Rhododendron concinnum f. laetevirens Cowan	Synonym		TRO
Rhododendron concinnum var. lepidanthum (Rehder & E.H. Wilson) Rehder	Synonym		TRO
Rhododendron concinnum var. pseudoyanthinum (Balf. f. & Hutch.) Davidian	Synonym		TRO
Rhododendron confertissimum Nakai	Synonym		TRO
Rhododendron convexum Sleumer	Unresolved		WCSP (in review)
Rhododendron cookeanum Davidian	Synonym		TRO
Rhododendron coombense Hemsl.	Synonym		TRO
Rhododendron cooperi Balf.f.	Unresolved		WCSP (in review)
Rhododendron copelandii Merr.	Unresolved		WCSP (in review)
Rhododendron cordatum H. Lév.	Synonym		TRO
Rhododendron cordifolium Dehnh.	Unresolved		WCSP (in review)
Rhododendron coreanum Rehder	Unresolved		WCSP (in review)
Rhododendron coriaceum Franch.	Accepted		TRO
Rhododendron coriifolium Sleumer	Unresolved		WCSP (in review)
Rhododendron cornu-bovis Sleumer	Unresolved		WCSP (in review)
Rhododendron correoides J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron coruscum Ridl.	Unresolved		WCSP (in review)
Rhododendron coryanum Tagg & Forrest	Accepted		TRO
Rhododendron coryi Shinners	Unresolved		WCSP (in review)
Rhododendron coryphaeum Balf. f. & Forrest	Synonym		TRO
Rhododendron cosmetum Balf. f. & Forrest	Synonym		TRO
Rhododendron costulatum Franch.	Synonym		TRO
Rhododendron cowanianum Davidian	Unresolved		WCSP (in review)
Rhododendron coxianum Davidian	Unresolved		WCSP (in review)
Rhododendron crassifolium Stapf	Unresolved		WCSP (in review)
Rhododendron crassimedium P.C. Tam	Accepted		TRO
Rhododendron crassinervium Ridl.	Unresolved		WCSP (in review)
Rhododendron crassistylum M.Y. He	Accepted		TRO
Rhododendron crassum Franch.	Synonym		TRO
Rhododendron crebreflorum Hutch. & Kingdon-Ward	Unresolved		WCSP (in review)
Rhododendron cremastum Balf. f. & Forrest	Synonym		TRO
Rhododendron cremnastes Balf.f. & Farrer	Unresolved		WCSP (in review)
Rhododendron cremnophilum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron crenatum H. Lév.	Synonym		TRO
Rhododendron crenulatum Hutch. ex Sleumer	Unresolved		WCSP (in review)
Rhododendron cretaceum P.C. Tam	Accepted		TRO
Rhododendron crinigerum Franch.	Accepted		TRO
Rhododendron crinigerum var. crinigerum	Accepted		TRO
Rhododendron crispiflorum Planch.	Unresolved		WCSP (in review)
Rhododendron croceum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron crouxii Rehder	Unresolved		WCSP (in review)
Rhododendron cruentum H. Lév.	Synonym		TRO
Rhododendron cruttwellii Sleumer	Unresolved		WCSP (in review)
Rhododendron cubittii Hutch.	Unresolved		WCSP (in review)
Rhododendron cucullatum Hand.-Mazz.	Synonym		TRO
Rhododendron cuffeanum Craib ex Hutch.	Unresolved		WCSP (in review)
Rhododendron culminicolum F.Muell.	Unresolved		WCSP (in review)
Rhododendron cumberlandense E.L. Braun	Synonym		TRO
Rhododendron cuneatum W.W. Sm.	Accepted		TRO
Rhododendron cuneifolium Stapf	Unresolved		WCSP (in review)
Rhododendron cunninghamii K.Koch	Unresolved		WCSP (in review)
Rhododendron cuprescens Nitz.	Synonym		TRO
Rhododendron curranii Merr.	Unresolved		WCSP (in review)
Rhododendron × curtisii T.Moore	Unresolved		WCSP (in review)
Rhododendron curviflorum J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron curvistylum Kingdon-Ward	Unresolved		TRO
Rhododendron cuspidellum Sleumer	Unresolved		WCSP (in review)
Rhododendron cuthbertii Small	Unresolved		WCSP (in review)
Rhododendron cyanocarpum (Franch.) Franch. ex W.W. Sm.	Accepted		TRO
Rhododendron cyanocarpum var. eriphyllum (Balf. f. & W.W. Sm.) Tagg	Synonym		TRO
Rhododendron cyatheicola Sleumer	Unresolved		WCSP (in review)
Rhododendron cyclium Balf. f. & Forrest	Synonym		TRO
Rhododendron cymbomorphum Balf. f. & Forrest	Synonym		TRO
Rhododendron cyrtophyllum Wernham	Unresolved		WCSP (in review)
Rhododendron dabanshanense Fang ex S.X. Wang	Synonym		TRO
Rhododendron dachengense G.Z. Li	Accepted		TRO
Rhododendron daiyuenshanicum P.C. Tam	Synonym		TRO
Rhododendron daiyunicum P.C. Tam	Synonym		TRO
Rhododendron dalhousieae Hook. f.	Accepted		TRO
Rhododendron dalhousieae var. rhabdotum (Balf. f. & R.E. Cooper) Cullen	Accepted		TRO
Rhododendron damascenum Balf. f. & Forrest	Synonym		TRO
Rhododendron danbaense L.C. Hu	Accepted		TRO
Rhododendron danielsianum Planch.	Synonym		TRO
Rhododendron daphniflorum Diels	Synonym		TRO
Rhododendron dasycladoides Hand.-Mazz.	Accepted		TRO
Rhododendron dasycladum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron dasylepis Schltr.	Unresolved		WCSP (in review)
Rhododendron dasypetalum Balf. f. & Forrest	Accepted		TRO
Rhododendron datiandingense Z.J. Feng	Accepted		TRO
Rhododendron dauricum L.	Accepted		TRO
Rhododendron dauricum var. ciliatum (Nakai) E.H. Wilson	Accepted		TRO
Rhododendron dauricum var. mucronulatum (Turcz.) Maxim.	Synonym		TRO
Rhododendron dauricum subsp. mucronulatum (Turcz.) Vorosch.	Synonym		TRO
Rhododendron davidii Franch.	Accepted		TRO
Rhododendron davidsonianum Rehder & E.H. Wilson	Accepted		TRO
Rhododendron × davisianum R.I.Milne	Unresolved		WCSP (in review)
Rhododendron davisii Koehne	Unresolved		WCSP (in review)
Rhododendron dawuense H.P. Yang	Accepted		TRO
Rhododendron dayaoshanense L.M. Gao & D.Z. Li	Accepted		TRO
Rhododendron dayiense M.Y. He	Accepted		TRO
Rhododendron deciduum Andrews ex Steud.	Unresolved		WCSP (in review)
Rhododendron decipiens Lacaita	Unresolved		WCSP (in review)
Rhododendron declivatum Ching & H.P. Yang	Accepted		TRO
Rhododendron decorum Franch.	Accepted		TRO
Rhododendron decorum subsp. decorum	Accepted		TRO
Rhododendron decorum subsp. diaprepes (Balf. f. & W.W. Sm.) T.L. Ming	Accepted		TRO
Rhododendron decumbens D. Don ex G. Don	Synonym		TRO
Rhododendron deflexum Griff.	Unresolved		WCSP (in review)
Rhododendron degronianum Carrière	Unresolved		WCSP (in review)
Rhododendron dekatanum Cowan	Accepted		TRO
Rhododendron delavayi Franch.	Accepted		TRO
Rhododendron delavayi var. delavayi	Accepted		TRO
Rhododendron delavayi var. peramoenum (Balf. f. & Forrest) T.L. Ming	Accepted		TRO
Rhododendron deleiense Hutch. & Kingdon-Ward	Unresolved		WCSP (in review)
Rhododendron delicatulum Sleumer	Unresolved		WCSP (in review)
Rhododendron dendricola Hutch.	Accepted		TRO
Rhododendron dendritrichum Balf. f. & Forrest	Synonym		TRO
Rhododendron dendrocharis Franch.	Accepted		TRO
Rhododendron densifolium K.M. Feng	Accepted		TRO
Rhododendron dentampullum Chun ex P.C. Tam	Synonym		TRO
Rhododendron denudatum H. Lév.	Accepted		TRO
Rhododendron depile Balf. f. & Forrest	Synonym		TRO
Rhododendron desquamatum Balf. f. & Forrest	Synonym		TRO
Rhododendron detersile Franch.	Accepted		TRO
Rhododendron × detonsum Balf. f. & Forrest	Accepted		TRO
Rhododendron detzneranum Sleumer	Unresolved		WCSP (in review)
Rhododendron devrieseanum Koord.	Unresolved		WCSP (in review)
Rhododendron diacritum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron dianthiflorum Millais	Unresolved		WCSP (in review)
Rhododendron dianthosmum Sleumer	Unresolved		WCSP (in review)
Rhododendron diaprepes Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron dichroanthum Diels	Accepted		TRO
Rhododendron dichroanthum subsp. apodectum (Balf. f. & W.W. Sm.) Cowan	Accepted		TRO
Rhododendron dichroanthum var. apodectum (Balf. f. & W.W. Sm.) T.L. Ming	Synonym		TRO
Rhododendron dichroanthum subsp. herpesticum (Balf. f. & Kingdon-Ward) Cowan	Synonym		TRO
Rhododendron dichroanthum subsp. scyphocalyx (Balf. f. & Forrest) Cowan	Accepted		TRO
Rhododendron dichroanthum var. scyphocalyx (Balf. f. & Forrest) T.L. Ming	Synonym		TRO
Rhododendron dichroanthum subsp. septentrionale Cowan	Accepted		TRO
Rhododendron dichroanthum var. septentrionale (Cowan) T.L. Ming	Synonym		TRO
Rhododendron dichropeplum Balf. f. & Forrest	Synonym		TRO
Rhododendron dictyotum Balf. f. ex Tagg	Synonym		TRO
Rhododendron didymum Balf. f. & Forrest	Synonym		TRO
Rhododendron dielsianum Schltr.	Unresolved		WCSP (in review)
Rhododendron dignabile Cowan	Accepted		TRO
Rhododendron dilatatum Miq.	Unresolved		WCSP (in review)
Rhododendron × dimidiatum Balf.f.	Unresolved		WCSP (in review)
Rhododendron dimitrum Balf. f. & Forrest	Accepted		TRO
Rhododendron × diphrocalyx Balf. f.	Accepted		TRO
Rhododendron discolor Franch.	Accepted		TRO
Rhododendron disterigmoides Sleumer	Unresolved		WCSP (in review)
Rhododendron diversipilosum (Nakai) Harmaja	Accepted		TRO
Rhododendron docimum Balf.f. ex Tagg	Unresolved		WCSP (in review)
Rhododendron doctersii J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron dolerum Balf. f. & Forrest	Synonym		TRO
Rhododendron doshongense Tagg	Synonym		TRO
Rhododendron drumonium Balf. f. & Kingdon-Ward	Synonym		TRO
Rhododendron dryophyllum Balf. f. & Forrest	Synonym		TRO
Rhododendron dubium King & Gamble	Unresolved		WCSP (in review)
Rhododendron duclouxii H. Lév.	Accepted		TRO
Rhododendron × duclouxii H. Lév.	Unresolved		TRO
Rhododendron dumicola Tagg & Forrest	Accepted		TRO
Rhododendron dumosulum Balf. f. & Forrest	Synonym		TRO
Rhododendron dunnii E.H. Wilson	Synonym		TRO
Rhododendron durionifolium Becc.	Unresolved		WCSP (in review)
Rhododendron duseimatum Balf. f. & Forrest	Synonym		TRO
Rhododendron dutartrei Danet	Unresolved		WCSP (in review)
Rhododendron eastmanii Kron & Creel	Unresolved		WCSP (in review)
Rhododendron ebianense M.Y. Fang	Accepted		TRO
Rhododendron eclecteum Balf. f. & Forrest	Accepted		TRO
Rhododendron eclecteum var. brachyandrum (Balf. f. & Forrest) Cowan & Davidian	Synonym		TRO
Rhododendron eclecteum var. eclecteum	Accepted		TRO
Rhododendron edgarianum Rehder & E.H. Wilson	Accepted		TRO
Rhododendron edgarii Gamble	Unresolved		WCSP (in review)
Rhododendron edgeworthii Hook. f.	Accepted		TRO
Rhododendron eheinense M.Y.He & Z.J.Zhao	Unresolved		WCSP (in review)
Rhododendron elaeagnoides Hook.f.	Unresolved		WCSP (in review)
Rhododendron elegans Ridl.	Unresolved		WCSP (in review)
Rhododendron elegantulum Tagg & Forrest	Accepted		TRO
Rhododendron ellipticum Maxim.	Synonym		TRO
Rhododendron ellipticum var. leptosanthum (Hayata) S.S. Ying	Synonym		TRO
Rhododendron emaculatum Balf. f. & Forrest	Synonym		TRO
Rhododendron emarginatum Hemsl. & E.H. Wilson	Accepted		TRO
Rhododendron emarginatum var. eriocarpum K.M. Feng	Synonym		TRO
Rhododendron × emasculum W.Watson	Unresolved		WCSP (in review)
Rhododendron englerianum Koord.	Unresolved		WCSP (in review)
Rhododendron × enneandrum DC.	Unresolved		WCSP (in review)
Rhododendron × enomotoi T.Yamaz.	Unresolved		WCSP (in review)
Rhododendron epapillatum Balf. f. & R.E. Cooper	Synonym		TRO
Rhododendron epilosum (J.J.Sm.) Argent	Unresolved		WCSP (in review)
Rhododendron epipastum Balf. f. & Forrest	Synonym		TRO
Rhododendron erastum Balf. f. & Forrest	Accepted		TRO
Rhododendron eriandrum H. Lév. ex Hutch.	Synonym		TRO
Rhododendron ericoides H.Low ex Hook.f.	Unresolved		WCSP (in review)
Rhododendron erileucum Balf. f. & Forrest	Synonym		TRO
Rhododendron eriobotryoides Xiang Chen & Jia Y. Huang	Unresolved		TRO
Rhododendron eriocarpum Nakai	Unresolved		WCSP (in review)
Rhododendron eriogynum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron eriphyllum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron eritimum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron eritimum subsp. chawchiense (Balf. f. & Farrer) Tagg	Synonym		TRO
Rhododendron eritimum subsp. gymnogynum (Balf. f. & Forrest) Tagg	Synonym		TRO
Rhododendron eritimum subsp. heptamerum (Balf. f.) Tagg	Synonym		TRO
Rhododendron eritimum subsp. persicinum (Hand.-Mazz.) Tagg	Synonym		TRO
Rhododendron erosipetalum J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron erosum Cowan	Accepted		TRO
Rhododendron erubescens Hutch.	Synonym		TRO
Rhododendron × erythrocalyx Balf. f. & Forrest	Accepted		TRO
Rhododendron erythrocalyx subsp. beimaense (Balf. f. & Forrest) Tagg	Synonym		TRO
Rhododendron erythrocalyx subsp. docimum Balf. f. ex Tagg	Synonym		TRO
Rhododendron erythrocalyx subsp. eucallum (Balf. f. & Forrest) Tagg	Synonym		TRO
Rhododendron erythrocalyx subsp. truncatulum (Balf. f. & Forrest) Tagg	Synonym		TRO
Rhododendron esetulosum Balf. f. & Forrest	Accepted		TRO
Rhododendron esquirolii H. Lév.	Synonym		TRO
Rhododendron euanthum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron eucallum Balf. f. & Forrest	Synonym		TRO
Rhododendron euchaites Balf. f. & Forrest	Synonym		TRO
Rhododendron euchroum Balf. f. & Kingdon-Ward	Accepted		TRO
Rhododendron eudoxum Balf. f. & Forrest	Accepted		TRO
Rhododendron eudoxum subsp. asteium (Balf. f. & Forrest) Tagg	Synonym		TRO
Rhododendron eudoxum subsp. brunneifolium (Balf. f. & Forrest) Cowan	Synonym		TRO
Rhododendron eudoxum subsp. brunneifolium (Balf. f. & Forrest) Tagg	Synonym		TRO
Rhododendron eudoxum var. brunneifolium (Balf. f. & Forrest) D.F. Chamb.	Accepted		TRO
Rhododendron eudoxum subsp. epipastum (Balf. f. & Forrest) Tagg	Synonym		TRO
Rhododendron eudoxum var. eudoxum	Accepted		TRO
Rhododendron eudoxum subsp. glaphyrum (Balf. f. & Forrest) Tagg	Synonym		TRO
Rhododendron eudoxum subsp. mesopolium (Balf. f. & Forrest) Tagg	Synonym		TRO
Rhododendron eudoxum var. mesopolium (Balf. f. & Forrest) D.F. Chamb.	Accepted		TRO
Rhododendron eudoxum subsp. pothinum (Balf. f. & Forrest) Tagg	Synonym		TRO
Rhododendron eudoxum subsp. temenium (Balf. f. & Forrest) Tagg	Synonym		TRO
Rhododendron eudoxum subsp. trichomiscum (Balf. f. & Forrest) Tagg	Synonym		TRO
Rhododendron euonymifolium H. Lév.	Synonym		TRO
Rhododendron eurysiphon Tagg & Forrest	Accepted		TRO
Rhododendron evelyneae Danet	Unresolved		WCSP (in review)
Rhododendron exasperatum Tagg	Accepted		TRO
Rhododendron excellens Hemsl. & E.H. Wilson	Accepted		TRO
Rhododendron excelsum A.Chev.	Unresolved		WCSP (in review)
Rhododendron eximium Nutt.	Unresolved		WCSP (in review)
Rhododendron exquisitum Hutch.	Synonym		TRO
Rhododendron exquisitum T.L. Ming	Synonym		TRO
Rhododendron exuberans (Sleumer) Argent	Unresolved		WCSP (in review)
Rhododendron eymae Sleumer	Unresolved		WCSP (in review)
Rhododendron faberi Hemsl.	Accepted		TRO
Rhododendron faberi subsp. faberi	Accepted		TRO
Rhododendron faberi subsp. prattii (Franch.) D.F. Chamb.	Accepted		TRO
Rhododendron faberioides Balf. f.	Synonym		TRO
Rhododendron facetum Balf. f. & Kingdon-Ward	Accepted		TRO
Rhododendron faithiae Chun	Accepted		TRO
Rhododendron falcinellum (P.C. Tam) P.C. Tam	Synonym		TRO
Rhododendron falconeri Hook.f.	Unresolved		WCSP (in review)
Rhododendron fallacinum Sleumer	Unresolved		WCSP (in review)
Rhododendron fangchengense P.C. Tam	Accepted		TRO
Rhododendron fargesii Franch.	Synonym		TRO
Rhododendron farinosum H. Lév.	Accepted		TRO
Rhododendron farrerae Sweet	Accepted		TRO
Rhododendron farrerae var. leucotrichum Franch.	Synonym		TRO
Rhododendron farrerae var. mediocre Diels	Synonym		TRO
Rhododendron fastigiatum Franch.	Accepted		TRO
Rhododendron fastigifolium (W.P.Lemmon) E.P.Hume	Unresolved		WCSP (in review)
Rhododendron faucium D.F. Chamb.	Accepted		TRO
Rhododendron fauriei Franch.	Accepted		TRO
Rhododendron feddei H. Lév.	Accepted		TRO
Rhododendron ferrugineum L.	Unresolved		WCSP (in review)
Rhododendron fictolacteum Balf. f.	Synonym		TRO
Rhododendron fictolacteum var. miniforme Davidian	Synonym		TRO
Rhododendron filamentosum Wernham	Unresolved		WCSP (in review)
Rhododendron × filidactylis R.I.Milne	Unresolved		WCSP (in review)
Rhododendron fimbriatum Hutch.	Synonym		TRO
Rhododendron fissotectum Balf. f. & Forrest	Synonym		TRO
Rhododendron × fittianum Balf. f.	Accepted		TRO
Rhododendron flammeum (Michx.) Sarg.	Accepted		TRO
Rhododendron flavantherum Hutch. & Kingdon-Ward	Accepted		TRO
Rhododendron flavidum Franch.	Accepted		TRO
Rhododendron flavidum var. flavidum	Accepted		TRO
Rhododendron flavidum var. psilostylum Rehder & E.H. Wilson	Accepted		TRO
Rhododendron flavoflorum T.L. Ming	Accepted		TRO
Rhododendron flavorufum Balf. f. & Forrest	Synonym		TRO
Rhododendron flavoviride J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron fletcherianum Davidian	Accepted		TRO
Rhododendron fleuryi Dop ex A.Chev.	Unresolved		WCSP (in review)
Rhododendron flinckii Davidian	Synonym		TRO
Rhododendron floccigerum Franch.	Accepted		TRO
Rhododendron floccigerum var. appropinquans Tagg & Forrest	Synonym		TRO
Rhododendron floccigerum subsp. appropinquans (Tagg & Forrest) D.F. Chamb.	Synonym		TRO
Rhododendron floribundum Franch.	Accepted		TRO
Rhododendron florulentum P.C. Tam	Accepted		TRO
Rhododendron flosculum W.P. Fang & G.Z. Li	Accepted		TRO
Rhododendron flumineum W.P. Fang & M.Y. He	Accepted		TRO
Rhododendron fokienense Franch.	Synonym		TRO
Rhododendron fongkaiense C.N. Wu & P.C. Tam	Synonym		TRO
Rhododendron fordii Hemsl.	Synonym		TRO
Rhododendron formosanum Hemsl.	Accepted		TRO
Rhododendron formosum Kingdon-Ward	Unresolved		WCSP (in review)
Rhododendron formosum Wall.	Unresolved		WCSP (in review)
Rhododendron forrestii Balf. f. ex Diels	Accepted		TRO
Rhododendron forrestii subsp. forrestii	Accepted		TRO
Rhododendron forrestii var. repens (Balf. f. & Forrest) Cowan & Davidian	Synonym		TRO
Rhododendron fortunans J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron fortunei Lindl.	Accepted		TRO
Rhododendron fortunei subsp. discolor (Franch.) D.F. Chamb.	Synonym		TRO
Rhododendron fortunei var. houlstonii (Hemsl. & E.H. Wilson) Rehder & E.H. Wilson	Synonym		TRO
Rhododendron fortunei var. kwangfuense (Chun & W.P. Fang) G.Z. Li	Synonym		TRO
Rhododendron foveolatum Rehder & E.H. Wilson	Synonym		TRO
Rhododendron fragariiflorum Kingdon-Ward	Accepted		TRO
Rhododendron fragrans DC.	Unresolved		WCSP (in review)
Rhododendron fragrans Maxim.	Unresolved		WCSP (in review)
Rhododendron fragrans Franch.	Unresolved		WCSP (in review)
Rhododendron franchetianum H. Lév.	Synonym		TRO
Rhododendron franssenianum J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron frey-wysslingii J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron fuchsii Sleumer	Unresolved		WCSP (in review)
Rhododendron fuchsiiflorum H. Lév.	Synonym		TRO
Rhododendron fuchsiifolium H. Lév.	Accepted		TRO
Rhododendron fuchsioides Schltr.	Unresolved		WCSP (in review)
Rhododendron fulgens Hook. f.	Accepted		TRO
Rhododendron × fulvastrum Balf. f. & Forrest	Accepted		TRO
Rhododendron fulvastrum subsp. epipastum (Balf. f. & Forrest) Cowan	Synonym		TRO
Rhododendron fulvastrum var. gilvum (Cowan) Davidian	Synonym		TRO
Rhododendron fulvastrum subsp. mesopolium (Balf. f. & Forrest) Cowan	Synonym		TRO
Rhododendron fulvastrum subsp. trichomiscum (Balf. f. & Forrest) Cowan	Synonym		TRO
Rhododendron fulvastrum subsp. trichophlebium (Balf. f. & Forrest) Cowan	Synonym		TRO
Rhododendron fulvoides Balf. f. & Forrest	Synonym		TRO
Rhododendron fulvum Balf. f. & W.W. Sm.	Accepted		TRO
Rhododendron fulvum subsp. fulvoides (Balf. f. & Forrest) D.F. Chamb.	Accepted		TRO
Rhododendron fumidum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron furbishii (W.P.Lemmon & McKay) E.P.Hume	Unresolved		WCSP (in review)
Rhododendron × furbishii (W.P.Lemmon & McKay) L.C.Leach	Unresolved		WCSP (in review)
Rhododendron fuscipilum M.Y. He	Accepted		TRO
Rhododendron fuyuanense Zeng H. Yang	Accepted		TRO
Rhododendron galactinum Balf. f. ex Tagg	Accepted		TRO
Rhododendron galioides J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron gandavense Rehder	Unresolved		WCSP (in review)
Rhododendron gannanense Z.C. Feng & X.G. Sun	Accepted		TRO
Rhododendron gardenia Schltr.	Unresolved		WCSP (in review)
Rhododendron gaultheriifolium J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron gaultherioides Boiss.	Unresolved		WCSP (in review)
Rhododendron gemmiferum M.N. Philipson & Philipson	Accepted		TRO
Rhododendron genestierianum Forrest	Accepted		TRO
Rhododendron × geraldii (auct.) Ivens	Unresolved		WCSP (in review)
Rhododendron geraldii (Franch.) D.F.Chamb.	Unresolved		WCSP (in review)
Rhododendron germanicum Hoppe	Unresolved		WCSP (in review)
Rhododendron gibbsiae J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron gibsonii Paxton	Unresolved		WCSP (in review)
Rhododendron gideonii Argent	Unresolved		WCSP (in review)
Rhododendron giganteum Forrest ex Tagg	Synonym		TRO
Rhododendron giganteum var. seminudum Tagg & Forrest	Synonym		TRO
Rhododendron gilliardii Sleumer	Unresolved		WCSP (in review)
Rhododendron giraudiasii H. Lév.	Synonym		TRO
Rhododendron giulianettii Lauterb.	Unresolved		WCSP (in review)
Rhododendron glabratum Hoppe	Unresolved		WCSP (in review)
Rhododendron glabrifilum J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron glabriflorum J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron × gladwynense M.G.Henry	Unresolved		WCSP (in review)
Rhododendron glanduliferum Franch.	Accepted		TRO
Rhododendron glandulostylum W.P. Fang & M.Y. He	Synonym		TRO
Rhododendron glandulosum (Standl. ex Small) Tagg	Synonym		TRO
Rhododendron glandulosum (Standl. ex Small) Millais	Synonym		TRO
Rhododendron glaphyrum Balf. f. & Forrest	Synonym		TRO
Rhododendron glaphyrum var. dealbatum (Cowan) Davidian	Synonym		TRO
Rhododendron glaucaenum Biswas	Unresolved		WCSP (in review)
Rhododendron glaucoaureum Balf. f. & Forrest	Synonym		TRO
Rhododendron glaucopeplum Balf. f. & Forrest	Synonym		TRO
Rhododendron glaucophyllum Rehder	Unresolved		WCSP (in review)
Rhododendron glaucophyllum var. tubiforme Cowan & Davidian	Synonym		TRO
Rhododendron glaucophyllum subsp. tubiforme (Cowan & Davidian) D.G. Long	Synonym		TRO
Rhododendron glaucum G.Don	Unresolved		WCSP (in review)
Rhododendron glaucum Hook.f.	Unresolved		WCSP (in review)
Rhododendron glaucum (Lam.) Sweet	Unresolved		WCSP (in review)
Rhododendron glischroides Tagg & Forrest	Unresolved		WCSP (in review)
Rhododendron glischrum Balf. f. & W.W. Sm.	Accepted		TRO
Rhododendron glischrum var. adenosum Cowan & Davidian	Synonym		TRO
Rhododendron glischrum subsp. rude (Tagg & Forrest) D.F. Chamb.	Accepted		TRO
Rhododendron globigerum Balf. f. & Forrest	Synonym		TRO
Rhododendron gloeoblastum Balf. f. & Forrest	Synonym		TRO
Rhododendron glomerulatum Hutch.	Synonym		TRO
Rhododendron gloxiniiflorum Millais	Unresolved		WCSP (in review)
Rhododendron gnaphalocarpum Hayata	Synonym		TRO
Rhododendron gologense C.J. Xu & Z.J. Zhao	Accepted		TRO
Rhododendron gonggashanense W.K. Hu	Accepted		TRO
Rhododendron gongshanense T.L. Ming	Accepted		TRO
Rhododendron goodenoughii Sleumer	Unresolved		WCSP (in review)
Rhododendron goreri Davidian	Unresolved		WCSP (in review)
Rhododendron gorumense Schltr.	Unresolved		WCSP (in review)
Rhododendron × gowenianum Sweet	Unresolved		WCSP (in review)
Rhododendron gracile H.Low ex Lindl.	Unresolved		WCSP (in review)
Rhododendron gracilentum F.Muell.	Unresolved		WCSP (in review)
Rhododendron gracilescens (Nakai) Maek.	Unresolved		WCSP (in review)
Rhododendron gracilipes Franch.	Synonym		TRO
Rhododendron grande Wight	Accepted		TRO
Rhododendron gratiosum P.C. Tam	Synonym		TRO
Rhododendron gratum T.L. Ming	Synonym		TRO
Rhododendron graveolens W.Bull	Unresolved		WCSP (in review)
Rhododendron gregarium Sleumer	Unresolved		WCSP (in review)
Rhododendron griersonianum Balf. f. & Forrest	Accepted		TRO
Rhododendron griffithianum Wight	Accepted		TRO
Rhododendron griffithianum var. aucklandii (Hook. f.) Hook.	Synonym		TRO
Rhododendron groenlandicum (Oeder) Kron & Judd	Accepted		TRO
Rhododendron grothausii Davidian	Unresolved		WCSP (in review)
Rhododendron guangnanense R.C. Fang	Accepted		TRO
Rhododendron guihainianum G.Z. Li	Accepted		TRO
Rhododendron guizhongense G.Z. Li	Accepted		TRO
Rhododendron guizhouense M.Y. Fang	Accepted		TRO
Rhododendron gymnanthum Diels	Synonym		TRO
Rhododendron gymnocarpum Balf. f. ex Tagg	Synonym		TRO
Rhododendron gymnogynum Balf. f. & Forrest	Synonym		TRO
Rhododendron gymnomiscum Balf. f. & Kingdon-Ward	Synonym		TRO
Rhododendron habbemae Koord.	Unresolved		WCSP (in review)
Rhododendron habrotrichum Balf. f. & W.W. Sm.	Accepted		TRO
Rhododendron haemaleum Balf. f. & Forrest	Synonym		TRO
Rhododendron haematocheilum Craib	Synonym		TRO
Rhododendron haematodes Franch.	Accepted		TRO
Rhododendron haematodes var. calycinum Franch.	Synonym		TRO
Rhododendron haematodes subsp. chaetomallum (Balf. f. & Forrest) D.F. Chamb.	Accepted		TRO
Rhododendron haematodes subsp. haematodes	Accepted		TRO
Rhododendron haematodes var. hypoleucum Franch.	Synonym		TRO
Rhododendron haematophthalmum Sleumer	Unresolved		WCSP (in review)
Rhododendron haemonium Balf. f. & R.E. Cooper	Synonym		TRO
Rhododendron hainanense Merr.	Accepted		TRO
Rhododendron × halense Grembl.	Unresolved		WCSP (in review)
Rhododendron hallaisanense H.Lév.	Unresolved		WCSP (in review)
Rhododendron hameliiflorum Wernham	Unresolved		WCSP (in review)
Rhododendron hanceanum Hemsl.	Accepted		TRO
Rhododendron hancockii Hemsl.	Accepted		TRO
Rhododendron hangzhouense W.P. Fang & M.Y. He	Synonym		TRO
Rhododendron hannoense Nakai	Synonym		TRO
Rhododendron hansemannii Warb.	Unresolved		WCSP (in review)
Rhododendron haofui Chun & W.P. Fang	Accepted		TRO
Rhododendron hardingii Forrest ex Tagg	Synonym		TRO
Rhododendron hardyi Davidian	Synonym		TRO
Rhododendron harrovianum Hemsl.	Synonym		TRO
Rhododendron hartleyi Sleumer	Unresolved		WCSP (in review)
Rhododendron × hasegawae S.Watan.	Unresolved		WCSP (in review)
Rhododendron headfortianum Hutch.	Synonym		TRO
Rhododendron heatherae Rushforth	Unresolved		WCSP (in review)
Rhododendron hedyosmum Balf.f.	Unresolved		WCSP (in review)
Rhododendron hedythamnum Balf. f. & Forrest	Synonym		TRO
Rhododendron hedythamnum var. eglandulosum Hand.-Mazz.	Synonym		TRO
Rhododendron heftii Davidian	Synonym		TRO
Rhododendron heishuiense W.P. Fang	Synonym		TRO
Rhododendron heizhugouense M.Y. He & L.C. Hu	Accepted		TRO
Rhododendron hejiangense M.Y. He	Accepted		TRO
Rhododendron heliolepis Franch.	Accepted		TRO
Rhododendron heliolepis var. brevistylum (Franch.) Cullen	Synonym		TRO
Rhododendron heliolepis var. fumidum (Balf. f. & W.W. Sm.) R.C. Fang	Accepted		TRO
Rhododendron heliolepis var. heliolepis	Accepted		TRO
Rhododendron heliolepis var. oporinum (Balf. f. & Kingdon-Ward) A.L. Chang	Accepted		TRO
Rhododendron hellwigii Warb.	Unresolved		WCSP (in review)
Rhododendron helodes Sleumer	Unresolved		WCSP (in review)
Rhododendron helvolum Balf. f. & Forrest	Synonym		TRO
Rhododendron hemidartum Balf. f. ex Tagg	Synonym		TRO
Rhododendron × hemigymnum (Tagg & Forrest) D.F. Chamb.	Accepted		TRO
Rhododendron hemitrichotum Balf. f. & Forrest	Accepted		TRO
Rhododendron hemsleyanum E.H. Wilson	Accepted		TRO
Rhododendron hemsleyanum var. chengianum (W.P. Fang) W.P. Fang ex W.K. Hu	Accepted		TRO
Rhododendron henanense W.P. Fang	Accepted		TRO
Rhododendron henryi Hance	Accepted		TRO
Rhododendron henryi var. dunnii (E.H. Wilson) M.Y. He	Accepted		TRO
Rhododendron henryi var. henryi	Accepted		TRO
Rhododendron henryi var. pubescens K.M. Feng & A.L. Chang	Synonym		TRO
Rhododendron hepaticum P.C. Tam	Synonym		TRO
Rhododendron heptamerum Balf. f.	Synonym		TRO
Rhododendron heptaster Gilli	Unresolved		WCSP (in review)
Rhododendron herpesticum Balf. f. & Kingdon-Ward	Synonym		TRO
Rhododendron herzogii Warb.	Unresolved		WCSP (in review)
Rhododendron hesperium Balf. f. & Forrest	Synonym		TRO
Rhododendron heteroclitum H.P. Yang	Accepted		TRO
Rhododendron hexamerum Hand.-Mazz.	Synonym		TRO
Rhododendron hidaense Makino ex H.Hara	Unresolved		WCSP (in review)
Rhododendron hidakanum H.Hara	Unresolved		WCSP (in review)
Rhododendron × hillieri Davidian	Accepted		TRO
Rhododendron himantodes Sleumer	Unresolved		WCSP (in review)
Rhododendron himertum Balf. f. & Forrest	Synonym		TRO
Rhododendron himertum subsp. nebrites (Balf. f. & Forrest) Tagg	Synonym		TRO
Rhododendron himertum subsp. poliopeplum (Balf. f. & Forrest) Tagg	Synonym		TRO
Rhododendron hippophaeoides Balf. f. & W.W. Sm.	Accepted		TRO
Rhododendron hippophaeoides var. hippophaeoides	Accepted		TRO
Rhododendron hirsuticostatum Hand.-Mazz.	Synonym		TRO
Rhododendron × hirsutiformum Grembl.	Unresolved		WCSP (in review)
Rhododendron hirsutipetiolatum A.L. Chang & R.C. Fang	Accepted		TRO
Rhododendron hirsutum L.	Unresolved		WCSP (in review)
Rhododendron hirtipes Tagg	Accepted		TRO
Rhododendron hirtolepidotum J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron hispidum D.Don	Unresolved		WCSP (in review)
Rhododendron hispidum Torr.	Unresolved		WCSP (in review)
Rhododendron hodgsonii Hook. f.	Accepted		TRO
Rhododendron hoi W.P. Fang	Accepted		TRO
Rhododendron × holmleaense Rehder	Unresolved		WCSP (in review)
Rhododendron honbanianum A.Chev. ex Dop	Unresolved		WCSP (in review)
Rhododendron hongkongense Hutch.	Accepted		TRO
Rhododendron hooglandii Sleumer	Unresolved		WCSP (in review)
Rhododendron hookeri Nutt.	Accepted		TRO
Rhododendron horaeum Balf. f. & Forrest	Synonym		TRO
Rhododendron horlickianum Davidian	Unresolved		WCSP (in review)
Rhododendron hormophorum Balf. f. & Forrest	Synonym		TRO
Rhododendron hortense Nakai	Unresolved		WCSP (in review)
Rhododendron houlstonii Hemsl. & E.H. Wilson	Synonym		TRO
Rhododendron huadingense B.Y. Ding & Y.Y. Fang	Accepted		TRO
Rhododendron huangpingense X. Chen & Jia Y. Huang	Unresolved		TRO
Rhododendron huanum W.P. Fang	Accepted		TRO
Rhododendron huguangense P.C. Tam	Accepted		TRO
Rhododendron huidongense T.L. Ming	Accepted		TRO
Rhododendron huiyangense W.P. Fang & M.Y. He	Synonym		TRO
Rhododendron hukwangense P.C. Tam	Synonym		TRO
Rhododendron humicola Balf.f.	Unresolved		WCSP (in review)
Rhododendron hunanense Chun ex P.C. Tam	Accepted		TRO
Rhododendron hunanense var. mangshanicum P.C. Tam	Synonym		TRO
Rhododendron hunnewellianum Rehder & E.H. Wilson	Accepted		TRO
Rhododendron hunnewellianum subsp. hunnewellianum	Accepted		TRO
Rhododendron hunnewellianum subsp. rockii (E.H. Wilson) D.F. Chamb.	Accepted		TRO
Rhododendron hutchinsonianum W.P. Fang	Accepted		TRO
Rhododendron hyacinthiflorum Steud.	Unresolved		WCSP (in review)
Rhododendron hyacinthosmum Sleumer	Unresolved		WCSP (in review)
Rhododendron hybridogenum Sleumer	Unresolved		WCSP (in review)
Rhododendron × hybridum Ker Gawl.	Unresolved		WCSP (in review)
Rhododendron hylaeum Balf. f. & Farrer	Accepted		TRO
Rhododendron hylothreptum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron hymenanthes Makino	Unresolved		WCSP (in review)
Rhododendron hypenanthum Balf. f.	Accepted		TRO
Rhododendron hyperythrum Hayata	Accepted		TRO
Rhododendron hypoblematosum P.C. Tam	Accepted		TRO
Rhododendron hypoglaucum Hemsl.	Accepted		TRO
Rhododendron hypolepidotum (Franch.) Balf. f. & Forrest	Synonym		TRO
Rhododendron hypoleucophyllum Makino ex H.Hara	Unresolved		WCSP (in review)
Rhododendron hypoleucum (Kom.) Harmaja	Accepted		TRO
Rhododendron hypophaeum Balf. f. & Forrest	Synonym		TRO
Rhododendron hypopitys Pojark.	Unresolved		WCSP (in review)
Rhododendron hypotrichotum Balf. f. & Forrest	Synonym		TRO
Rhododendron hyugaense (T.Yamaz.) T.Yamaz.	Unresolved		WCSP (in review)
Rhododendron idoneum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron igneum Cowan	Accepted		TRO
Rhododendron ignicolor Warb. ex P.Sarasin & Sarasin	Unresolved		WCSP (in review)
Rhododendron imberbe Hutch.	Unresolved		WCSP (in review)
Rhododendron × impeanum auct.	Unresolved		WCSP (in review)
Rhododendron impeditum Balf. f. & W.W. Sm.	Accepted		TRO
Rhododendron imperator Hutch. & Kingdon-Ward	Synonym		TRO
Rhododendron impositum J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron impressopunctatum J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron inaequale Hutch.	Unresolved		WCSP (in review)
Rhododendron incommodum Sleumer	Unresolved		WCSP (in review)
Rhododendron inconspicuum J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron indicum (L.) Sweet	Synonym		TRO
Rhododendron indicum var. formosanum Hayata	Synonym		TRO
Rhododendron indicum var. ignescens Sweet	Synonym		TRO
Rhododendron indicum var. pulchrum (Sweet) G. Don	Synonym		TRO
Rhododendron indicum var. puniceum Sweet	Synonym		TRO
Rhododendron indicum var. simsii (Planch.) Maxim.	Synonym		TRO
Rhododendron indicum var. smithii Sweet	Synonym		TRO
Rhododendron inopinum Balf. f.	Accepted		TRO
Rhododendron × inopinum Balf. f.	Unresolved		TRO
Rhododendron insculptum Kingdon-Ward	Unresolved		WCSP (in review)
Rhododendron insculptum Hutch. & Kingdon-Ward	Unresolved		WCSP (in review)
Rhododendron insigne Hemsl. & E.H. Wilson	Accepted		TRO
Rhododendron insigne var. hejiangense (W.P. Fang) M.Y. Fang	Accepted		TRO
Rhododendron intermedium Schur	Unresolved		WCSP (in review)
Rhododendron intermedium Wender.	Unresolved		WCSP (in review)
Rhododendron intermedium Tausch	Unresolved		WCSP (in review)
Rhododendron intermedium Hegetschw.	Unresolved		WCSP (in review)
Rhododendron intortum Balf. f. & Forrest	Synonym		TRO
Rhododendron intranervatum Sleumer	Unresolved		WCSP (in review)
Rhododendron intricatum Franch.	Accepted		TRO
Rhododendron inundatum Sleumer	Unresolved		WCSP (in review)
Rhododendron invasorium Sleumer	Unresolved		WCSP (in review)
Rhododendron invictum Balf. f. & Farrer	Accepted		TRO
Rhododendron ioanthum Balf. f.	Synonym		TRO
Rhododendron iodes Balf. f. & Forrest	Synonym		TRO
Rhododendron irroratum Franch.	Accepted		TRO
Rhododendron irroratum subsp. irroratum	Accepted		TRO
Rhododendron irroratum subsp. pogonostylum (Balf. f. & W.W. Sm.) D.F. Chamb.	Accepted		TRO
Rhododendron iteaphyllum Hutch.	Unresolved		WCSP (in review)
Rhododendron ixeuticum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron iyoense Nakai	Unresolved		WCSP (in review)
Rhododendron × jacksonii auct.	Unresolved		WCSP (in review)
Rhododendron jahandiezii H. Lév.	Synonym		TRO
Rhododendron jamesianum Millais	Unresolved		WCSP (in review)
Rhododendron jangtzowense Balf. f. & Forrest	Synonym		TRO
Rhododendron japonicum C.K.Schneid.	Unresolved		WCSP (in review)
Rhododendron japonicum var. pentamerum (Maxim.) Hutch.	Unresolved		TRO
Rhododendron japonoheptamerum Kitam.	Unresolved		WCSP (in review)
Rhododendron jasminiflorum Hook.	Unresolved		WCSP (in review)
Rhododendron jasminoides M.Y. He	Accepted		TRO
Rhododendron javanicum Benn.	Unresolved		WCSP (in review)
Rhododendron jenestierianum Forrest	Accepted		TRO
Rhododendron jenkinsii Nutt.	Synonym		TRO
Rhododendron jiewhoei Argent	Unresolved		WCSP (in review)
Rhododendron jinchangense Zeng H. Yang	Accepted		TRO
Rhododendron jingangshanicum P.C. Tam	Accepted		TRO
Rhododendron jinpingense W.P. Fang & M.Y. He	Accepted		TRO
Rhododendron jinxiuense W.P. Fang & M.Y. He	Accepted		TRO
Rhododendron jodogawa Hassk.	Unresolved		WCSP (in review)
Rhododendron johnstoneanum Watt ex Hutch.	Unresolved		WCSP (in review)
Rhododendron joniense Ching & H.P. Yang	Accepted		TRO
Rhododendron jucundum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron kaempferi Planch.	Unresolved		WCSP (in review)
Rhododendron kailiense W.P. Fang & M.Y. He	Synonym		TRO
Rhododendron kamtschaticum Pall.	Unresolved		WCSP (in review)
Rhododendron kanehirae E.H.Wilson	Accepted		WCSP (in review)
Rhododendron kangdingense Z.J. Zhao	Synonym		TRO
Rhododendron kansuense Millais	Unresolved		WCSP (in review)
Rhododendron kasoense Hutch. & Kingdon-Ward	Accepted		TRO
Rhododendron kawakamii Hayata	Accepted		TRO
Rhododendron kawakamii var. flaviflorum Liu & Chuang	Accepted		TRO
Rhododendron kawir Danet	Unresolved		WCSP (in review)
Rhododendron keditii Sleumer	Unresolved		WCSP (in review)
Rhododendron keiskei Miq.	Unresolved		WCSP (in review)
Rhododendron keleticum Balf. f. & Forrest	Accepted		TRO
Rhododendron kemulense J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron kendrickii Nutt.	Accepted		TRO
Rhododendron kerowagiense Argent	Unresolved		WCSP (in review)
Rhododendron kesangiae D.G.Long & Rushforth	Unresolved		WCSP (in review)
Rhododendron kesselringii E.L.Wolf	Unresolved		WCSP (in review)
Rhododendron × kewense S.Watson	Unresolved		WCSP (in review)
Rhododendron keysii Nutt.	Accepted		TRO
Rhododendron keysii var. unicolor Hutch.	Synonym		TRO
Rhododendron keysseri F.Först.	Unresolved		WCSP (in review)
Rhododendron kialense Franch.	Synonym		TRO
Rhododendron kiangsiense W.P. Fang	Accepted		TRO
Rhododendron kinabaluense Merr.	Unresolved		WCSP (in review)
Rhododendron kingdonii Merr.	Synonym		TRO
Rhododendron kingianum Watt	Unresolved		WCSP (in review)
Rhododendron kirkii Millais	Unresolved		WCSP (in review)
Rhododendron × kisoanum Okuhara ex T.Shimizu	Unresolved		WCSP (in review)
Rhododendron kiusianum Makino	Unresolved		WCSP (in review)
Rhododendron kiyosumense (Makino) Makino	Unresolved		WCSP (in review)
Rhododendron kjellbergii J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron klossii Ridl.	Synonym		TRO
Rhododendron × knightianum J.Forbes	Unresolved		WCSP (in review)
Rhododendron kochii Stein	Unresolved		WCSP (in review)
Rhododendron kogo Danet	Unresolved		WCSP (in review)
Rhododendron × komatsui T.Yamaz.	Unresolved		WCSP (in review)
Rhododendron komiyamae Makino	Unresolved		WCSP (in review)
Rhododendron kongboense Hutch.	Accepted		TRO
Rhododendron konori Becc.	Unresolved		WCSP (in review)
Rhododendron kontumense Sleumer	Unresolved		WCSP (in review)
Rhododendron korthalsii Miq.	Unresolved		WCSP (in review)
Rhododendron × kosterianum C.K.Schneid.	Unresolved		WCSP (in review)
Rhododendron kotschyi Simonk.	Synonym		TRO
Rhododendron × koudzumontanum Hid.Takah. & Katsuy.	Unresolved		WCSP (in review)
Rhododendron kouytchense H. Lév.	Unresolved		TRO
Rhododendron kuluense D.F. Chamb.	Synonym		TRO
Rhododendron × kuratanum S.Watan.	Unresolved		WCSP (in review)
Rhododendron × kurohimense Arakawa	Unresolved		WCSP (in review)
Rhododendron kwangfuense Chun & W.P. Fang	Synonym		TRO
Rhododendron kwangsiense Hu ex P.C. Tam	Accepted		TRO
Rhododendron kwangsiense var. kwangsiense	Accepted		TRO
Rhododendron kwangsiense var. salicinum P.C. Tam	Synonym		TRO
Rhododendron kwangsiense var. subfalcatum P.C. Tam	Synonym		TRO
Rhododendron kwangtungense Merr. & Chun	Accepted		TRO
Rhododendron kyawii Lace & W.W. Sm.	Accepted		TRO
Rhododendron labolengense Ching & H.P. Yang	Accepted		TRO
Rhododendron lacteum Franch.	Accepted		TRO
Rhododendron lacteum var. macrophyllum Franch.	Synonym		TRO
Rhododendron × laetevirens Rehder	Unresolved		WCSP (in review)
Rhododendron lagopus Nakai	Unresolved		WCSP (in review)
Rhododendron lagunculicarpum J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron lambianum Argent	Unresolved		WCSP (in review)
Rhododendron lamii J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron lampongum Miq.	Unresolved		WCSP (in review)
Rhododendron lampropeplum Balf. f. & Forrest	Synonym		TRO
Rhododendron lamprophyllum Hayata	Synonym		TRO
Rhododendron lamrialianum Argent & T.J.Barkman	Unresolved		WCSP (in review)
Rhododendron lanatoides D.F. Chamb.	Accepted		TRO
Rhododendron lanatum Hook. f.	Accepted		TRO
Rhododendron lanatum var. luciferum Cowan	Synonym		TRO
Rhododendron lanceolatum Ridl.	Unresolved		WCSP (in review)
Rhododendron lancifolium Hook. f.	Synonym		TRO
Rhododendron langbianense A.Chev. ex Dop	Unresolved		WCSP (in review)
Rhododendron lanigerum Tagg	Accepted		TRO
Rhododendron lanigerum var. silvaticum (Cowan) Davidian	Synonym		TRO
Rhododendron laojunense T.L. Ming	Synonym		TRO
Rhododendron laojunshanense M.Y. Fang	Accepted		TRO
Rhododendron laoticum Dop	Unresolved		WCSP (in review)
Rhododendron lapidosum T.L. Ming	Synonym		TRO
Rhododendron lapponicum (L.) Wahlenb.	Accepted		TRO
Rhododendron lapponicum subsp. parvifolium (Adams) T. Yamaz.	Synonym		TRO
Rhododendron lasiopodum Hutch.	Synonym		TRO
Rhododendron lasiostylum Hayata	Accepted		TRO
Rhododendron lateriflorum R.C. Fang & A.L. Chang	Accepted		TRO
Rhododendron lateritium Planch.	Synonym		TRO
Rhododendron laticostum Ingram	Unresolved		WCSP (in review)
Rhododendron latifolium Hoppe	Unresolved		WCSP (in review)
Rhododendron latifolium Hoffmanns.	Unresolved		WCSP (in review)
Rhododendron latoucheae Franch.	Accepted		TRO
Rhododendron latoucheae var. amamiense (Ohwi) T. Yamaz.	Synonym		TRO
Rhododendron latoucheae var. ionanthum (W.P. Fang) G.Z. Li	Synonym		TRO
Rhododendron laudandum Cowan	Accepted		TRO
Rhododendron laureola Schltr.	Unresolved		WCSP (in review)
Rhododendron lauterbachianum F.Först.	Unresolved		WCSP (in review)
Rhododendron laxiflorum Balf. f. & Forrest	Synonym		TRO
Rhododendron leachianum L.F. Hend.	Synonym		TRO
Rhododendron leclerei H. Lév.	Synonym		TRO
Rhododendron ledebourii Pojark.	Unresolved		WCSP (in review)
Rhododendron ledifolium G. Don	Synonym		TRO
Rhododendron ledoides Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron leei W.P. Fang	Synonym		TRO
Rhododendron leiboense Z.J. Zhao	Accepted		TRO
Rhododendron leilungense Balf. f. & Forrest	Synonym		TRO
Rhododendron leiopodum Hayata	Synonym		TRO
Rhododendron leishanicum W.P. Fang & S.S. Chang ex D.F. Chamb.	Accepted		TRO
Rhododendron lemeei H. Lév.	Synonym		TRO
Rhododendron lepidanthum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron lepidostylum Balf. f. & Forrest	Accepted		TRO
Rhododendron lepidotum Wall. ex G. Don	Accepted		TRO
Rhododendron leprosum Balf. f.	Unresolved		TRO
Rhododendron leptanthum Hayata	Synonym		TRO
Rhododendron leptobrachion Sleumer	Unresolved		WCSP (in review)
Rhododendron leptocarpum Nutt.	Accepted		TRO
Rhododendron leptocladon Dop	Accepted		TRO
Rhododendron leptomorphum Sleumer	Unresolved		WCSP (in review)
Rhododendron leptopeplum Balf. f. & Forrest	Accepted		TRO
Rhododendron leptosanthum Hayata	Synonym		TRO
Rhododendron leptothrium Balf. f. & Forrest	Accepted		TRO
Rhododendron leucandrum H. Lév.	Synonym		TRO
Rhododendron leucanthum Bunge	Unresolved		WCSP (in review)
Rhododendron leucaspis Tagg	Accepted		TRO
Rhododendron leucobotrys Ridl.	Synonym		TRO
Rhododendron leucogigas Sleumer	Unresolved		WCSP (in review)
Rhododendron leucolasium Diels	Synonym		TRO
Rhododendron leucopetalum Balf. f. & Forrest	Synonym		TRO
Rhododendron levinei Merr.	Accepted		TRO
Rhododendron levistratum Balf. f. & Forrest	Synonym		TRO
Rhododendron leytense Merr.	Unresolved		WCSP (in review)
Rhododendron liangshanicum Z.J.Zhao	Unresolved		WCSP (in review)
Rhododendron liaoxigense S.L. Tung & Z. Lu	Accepted		TRO
Rhododendron liboense Z.R. Chen & K.M. Lan	Accepted		TRO
Rhododendron × liewianum Argent, A.L.Lamb & Phillipps	Unresolved		WCSP (in review)
Rhododendron lilacinum Xiang Chen & X. Chen	Unresolved		TRO
Rhododendron liliiflorum H. Lév.	Accepted		TRO
Rhododendron limprichtii Diels	Synonym		TRO
Rhododendron lindaueanum Koord.	Unresolved		WCSP (in review)
Rhododendron lindleyanum Millais	Unresolved		WCSP (in review)
Rhododendron lindleyanum Lavallée	Unresolved		WCSP (in review)
Rhododendron lindleyi T. Moore	Accepted		TRO
Rhododendron lineare Merr.	Unresolved		WCSP (in review)
Rhododendron linearicupulare P.C. Tam	Synonym		TRO
Rhododendron linearifolium Poir.	Unresolved		WCSP (in review)
Rhododendron linearifolium Siebold & Zucc.	Unresolved		WCSP (in review)
Rhododendron linearilobum R.C. Fang & A.L. Chang	Accepted		TRO
Rhododendron lingii Chun	Unresolved		TRO
Rhododendron linguiense G.Z. Li	Accepted		TRO
Rhododendron linnaeoides Schltr.	Unresolved		WCSP (in review)
Rhododendron liratum Balf. f. & Forrest	Synonym		TRO
Rhododendron litangense Balf. f. ex Hutch.	Synonym		TRO
Rhododendron litchiifolium T.C. Wu & P.C. Tam	Accepted		TRO
Rhododendron lithophilum Balf.f. & Kingdon-Ward	Unresolved		WCSP (in review)
Rhododendron litiense Balf. f. & Forrest	Synonym		TRO
Rhododendron lobbii auct.	Unresolved		WCSP (in review)
Rhododendron lochae F.Muell.	Unresolved		WCSP (in review)
Rhododendron lochmium Balf. f.	Accepted		TRO
Rhododendron loerzingii J.J.Sm. ex Koord. & Valeton	Unresolved		WCSP (in review)
Rhododendron loheri H.F.Copel.	Unresolved		WCSP (in review)
Rhododendron lompohense J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron longesquamatum C.K. Schneid.	Accepted		TRO
Rhododendron longesquamatum var. glabristylum Y.Y. Geng & Z.L. Zhao	Synonym		TRO
Rhododendron longicalyx M.Y. Fang	Accepted		TRO
Rhododendron longifalcatum P.C. Tam	Accepted		TRO
Rhododendron longiflorum Lindl.	Unresolved		WCSP (in review)
Rhododendron longifolium Nutt.	Synonym		TRO
Rhododendron longilobum L.M. Gao & D.Z. Li	Accepted		TRO
Rhododendron longiperulatum Hayata	Accepted		TRO
Rhododendron longipes Rehder & E.H. Wilson	Accepted		TRO
Rhododendron longipes var. chienianum (W.P. Fang) D.F. Chamb.	Accepted		TRO
Rhododendron longistylum Rehder & A. Wilson	Accepted		TRO
Rhododendron loniceriflorum P.C. Tam	Accepted		TRO
Rhododendron lophogynum Balf. f. & Forrest ex Hutch.	Synonym		TRO
Rhododendron lophophorum Balf. f. & Forrest	Synonym		TRO
Rhododendron lopsangianum Cowan	Synonym		TRO
Rhododendron loranthiflorum Sleumer	Unresolved		WCSP (in review)
Rhododendron loureiroana G.Don	Unresolved		WCSP (in review)
Rhododendron lowei Loudon	Unresolved		WCSP (in review)
Rhododendron lowei Hook.f.	Unresolved		WCSP (in review)
Rhododendron lowndesii Davidian	Unresolved		WCSP (in review)
Rhododendron lucidum Franch.	Synonym		TRO
Rhododendron luciferum (Cowan) Cowan	Synonym		TRO
Rhododendron ludlowii Cowan	Accepted		TRO
Rhododendron ludwigianum Hosseus	Unresolved		WCSP (in review)
Rhododendron luhuoense H.P. Yang	Accepted		TRO
Rhododendron lukiangense Franch.	Accepted		TRO
Rhododendron lukiangense subsp. admirabile (Balf. f. & Forrest) Tagg	Synonym		TRO
Rhododendron lukiangense subsp. adroserum (Balf. f. & Forrest) Tagg	Synonym		TRO
Rhododendron lukiangense subsp. ceraceum (Balf. f. & W.W. Sm.) Tagg	Synonym		TRO
Rhododendron lukiangense subsp. gymnanthum (Diels) Tagg	Synonym		TRO
Rhododendron lulangense L.C. Hu & Tateishi	Accepted		TRO
Rhododendron lungchiense W.P. Fang	Accepted		TRO
Rhododendron luraluense Sleumer	Unresolved		WCSP (in review)
Rhododendron × luscombei W.Watson	Unresolved		WCSP (in review)
Rhododendron lusidusculum Nakai	Unresolved		WCSP (in review)
Rhododendron lussoniense Rendle	Unresolved		WCSP (in review)
Rhododendron luteiflorum Davidian	Unresolved		WCSP (in review)
Rhododendron luteiflorum (Davidian) Cullen	Unresolved		WCSP (in review)
Rhododendron luteosquamatum Sleumer	Unresolved		WCSP (in review)
Rhododendron lutescens Franch.	Accepted		TRO
Rhododendron lutescens f. shimianense (W.P. Fang & P.S. Liu) Y.Y. Geng	Synonym		TRO
Rhododendron luteum C.K.Schneid.	Unresolved		WCSP (in review)
Rhododendron luteum Sweet	Unresolved		WCSP (in review)
Rhododendron lyi H. Lév.	Synonym		TRO
Rhododendron lysolepis Hutch.	Unresolved		WCSP (in review)
Rhododendron maboroense Schltr.	Unresolved		WCSP (in review)
Rhododendron macabeanum Watt ex Balf.f.	Unresolved		WCSP (in review)
Rhododendron macgregoriae F.Muell.	Unresolved		WCSP (in review)
Rhododendron mackenzianum Forrest	Accepted		TRO
Rhododendron macranthum (Bunge) G. Don	Synonym		TRO
Rhododendron macrocarpos Griff.	Unresolved		WCSP (in review)
Rhododendron macrocarpum Van Houtte	Unresolved		WCSP (in review)
Rhododendron macrogemmum (Nakai) Nakai	Unresolved		WCSP (in review)
Rhododendron macrophyllum D. Don ex G. Don	Synonym		TRO
Rhododendron macrophyllum f. album Rehder	Synonym		TRO
Rhododendron macrosepalum Maxim.	Unresolved		WCSP (in review)
Rhododendron macrosiphon Sleumer	Unresolved		WCSP (in review)
Rhododendron macrosmithii Davidian	Synonym		TRO
Rhododendron macrostemon Maxim.	Unresolved		WCSP (in review)
Rhododendron maculiferum Franch.	Accepted		TRO
Rhododendron maculiferum subsp. anhweiense (E.H. Wilson) D.F. Chamb.	Accepted		TRO
Rhododendron maddenii Hook. f.	Accepted		TRO
Rhododendron maddenii subsp. crassum (Franch.) Cullen	Accepted		TRO
Rhododendron maddenii var. longiflorum W. Watson	Synonym		TRO
Rhododendron maddenii subsp. maddenii	Accepted		TRO
Rhododendron madulidii Argent	Unresolved		WCSP (in review)
Rhododendron magnificum Kingdon-Ward	Accepted		TRO
Rhododendron magniflorum W.K. Hu	Accepted		TRO
Rhododendron magorianum Millais	Unresolved		WCSP (in review)
Rhododendron magorianum Balf.f. ex Tagg	Unresolved		WCSP (in review)
Rhododendron maguanense K.M. Feng	Accepted		TRO
Rhododendron mainlingense S.H. Huang & R.C. Fang	Accepted		TRO
Rhododendron mairei H. Lév.	Synonym		TRO
Rhododendron maius (J.J.Sm.) Sleumer	Unresolved		WCSP (in review)
Rhododendron makinoi Tagg	Unresolved		WCSP (in review)
Rhododendron makinoi Tagg ex Nakai	Unresolved		WCSP (in review)
Rhododendron malayanum Jack	Unresolved		WCSP (in review)
Rhododendron malindangense Merr.	Unresolved		WCSP (in review)
Rhododendron malipoense M.Y. He	Accepted		TRO
Rhododendron mallotum Balf. f. & Kingdon-Ward	Accepted		TRO
Rhododendron × malvaticum auct.	Unresolved		WCSP (in review)
Rhododendron mandarinorum Diels	Synonym		TRO
Rhododendron × manglesii H.J.Veitch	Unresolved		WCSP (in review)
Rhododendron manipurense Balf.f. & Watt	Unresolved		WCSP (in review)
Rhododendron mannophorum Balf. f. & Forrest	Synonym		TRO
Rhododendron manopeplum Balf. f. & Forrest	Synonym		TRO
Rhododendron maoerense W.P. Fang & G.Z. Li	Accepted		TRO
Rhododendron maowenense Ching & H.P. Yang	Accepted		TRO
Rhododendron margarettae Ashe	Unresolved		WCSP (in review)
Rhododendron mariae Hance	Accepted		TRO
Rhododendron mariae subsp. kwangsiense (Hu ex P.C. Tam) Chamb. & Rae	Synonym		TRO
Rhododendron mariesii Hemsl. & E.H. Wilson	Accepted		TRO
Rhododendron martinianum Balf. f. & Forrest	Accepted		TRO
Rhododendron maximowiczianum H. Lév.	Synonym		TRO
Rhododendron maximum L.	Synonym		TRO
Rhododendron maximum f. album (Pursh) Fernald	Unresolved		TRO
Rhododendron maximum var. album Pursh	Synonym		TRO
Rhododendron maximum f. purpureum (Pursh) Fernald	Unresolved		TRO
Rhododendron maximum var. purpureum Pursh	Synonym		TRO
Rhododendron maxiongense C.Q.Zhang & D.Paterson	Unresolved		WCSP (in review)
Rhododendron maxwellii Gibbs	Unresolved		WCSP (in review)
Rhododendron mayebarae Nakai & H.Hara	Unresolved		WCSP (in review)
Rhododendron mayrii J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron meddianum Forrest	Accepted		TRO
Rhododendron medoense W.P. Fang & M.Y. He	Accepted		TRO
Rhododendron megacalyx Balf. f. & Kingdon-Ward	Accepted		TRO
Rhododendron megalanthum M.Y. Fang	Accepted		TRO
Rhododendron megaphyllum Balf. f. & Forrest	Synonym		TRO
Rhododendron megeratum Balf. f. & Forrest	Accepted		TRO
Rhododendron meijeri Argent, A.L.Lamb & Phillipps	Unresolved		WCSP (in review)
Rhododendron mekongense Franch.	Accepted		TRO
Rhododendron mekongense var. longipilosum (Cowan) Cullen	Accepted		TRO
Rhododendron mekongense var. mekongense	Accepted		TRO
Rhododendron mekongense var. melinanthum (Balf. f. & Kingdon-Ward) Cullen	Accepted		TRO
Rhododendron mekongense var. rubrolineatum (Balf. f. & Forrest) Cullen	Accepted		TRO
Rhododendron melantherum Schltr.	Unresolved		WCSP (in review)
Rhododendron melinanthum Balf. f. & Kingdon-Ward	Synonym		TRO
Rhododendron meliphagidum J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron mendumiae Argent	Unresolved		WCSP (in review)
Rhododendron mengtszense Balf. f. & W.W. Sm.	Accepted		TRO
Rhododendron meridionale P.C. Tam	Accepted		TRO
Rhododendron mesopolium Balf. f. & Forrest	Synonym		TRO
Rhododendron metrium Balf. f. & Forrest	Synonym		TRO
Rhododendron metternichii Siebold & Zucc.	Unresolved		WCSP (in review)
Rhododendron mianningense Z.J. Zhao	Accepted		TRO
Rhododendron micranthum Turcz.	Accepted		TRO
Rhododendron microgynum Balf. f. & Forrest	Accepted		TRO
Rhododendron microleucum Hutch.	Synonym		TRO
Rhododendron micromalayanum Sleumer	Unresolved		WCSP (in review)
Rhododendron micromeres Tagg	Synonym		TRO
Rhododendron microphyton Franch.	Accepted		TRO
Rhododendron milleri Argent	Unresolved		WCSP (in review)
Rhododendron mimetes Tagg & Forrest	Accepted		TRO
Rhododendron mimetes var. simulans Tagg & Forrest	Synonym		TRO
Rhododendron mindanaense Merr.	Unresolved		WCSP (in review)
Rhododendron miniatum Cowan	Accepted		TRO
Rhododendron minimifolium Wernham	Unresolved		WCSP (in review)
Rhododendron minus Michx.	Unresolved		WCSP (in review)
Rhododendron minus Michx. ex Lam.	Unresolved		WCSP (in review)
Rhododendron minus var. chapmanii (Alph. Wood) Gandhi & Zarucchi	Unresolved		TRO
Rhododendron minus var. chapmanii (Alph. Wood) W.H. Duncan & Pullen	Synonym		TRO
Rhododendron minutiflorum Hu	Accepted		TRO
Rhododendron minyaense Philipson & M.N. Philipson	Accepted		TRO
Rhododendron mirabile Kingdon-Ward	Unresolved		WCSP (in review)
Rhododendron mishmiense Hutch. & Kingdon-Ward	Unresolved		WCSP (in review)
Rhododendron missionarium H. Lév.	Synonym		TRO
Rhododendron mitriforme P.C. Tam	Accepted		TRO
Rhododendron mitriforme var. mitriforme	Accepted		TRO
Rhododendron miyazawae Nakai & H.Hara	Unresolved		WCSP (in review)
Rhododendron miyiense W.K. Hu	Accepted		TRO
Rhododendron × mizumotoi S.Watan.	Unresolved		WCSP (in review)
Rhododendron mjoehergii Merr.	Unresolved		WCSP (in review)
Rhododendron modestum Hook.f.	Unresolved		WCSP (in review)
Rhododendron mogeanum Argent	Unresolved		WCSP (in review)
Rhododendron molle (Blume) G. Don	Accepted		TRO
Rhododendron molle subsp. japonicum (A.Gray) Kron	Unresolved		WCSP (in review)
Rhododendron mollicomum Balf. f. & W.W. Sm.	Accepted		TRO
Rhododendron mollicomum var. rockii Tagg	Synonym		TRO
Rhododendron mollyanum Cowan & Davidian	Synonym		TRO
Rhododendron monanthum Balf. f. & W.W. Sm.	Accepted		TRO
Rhododendron monbeigii Rehder & E.H. Wilson	Synonym		TRO
Rhododendron monkoboense Argent	Unresolved		WCSP (in review)
Rhododendron monodii (H.J.Lam) Argent	Unresolved		WCSP (in review)
Rhododendron monosematum Hutch.	Synonym		TRO
Rhododendron montiganum T.L. Ming	Accepted		TRO
Rhododendron montroseanum Davidian	Accepted		TRO
Rhododendron morelianum Lem.	Unresolved		WCSP (in review)
Rhododendron morii Hayata	Accepted		TRO
Rhododendron morii var. taitunense (T. Yamaz.) D.F. Chamb.	Synonym		TRO
Rhododendron morsheadianum Millais	Unresolved		WCSP (in review)
Rhododendron × morteri Sweet	Unresolved		WCSP (in review)
Rhododendron moszkowskii Schltr.	Unresolved		WCSP (in review)
Rhododendron motsonense H.Lév.	Unresolved		WCSP (in review)
Rhododendron motsouense H. Lév.	Synonym		TRO
Rhododendron moulmainense Hook.	Accepted		TRO
Rhododendron moulmainense var. calcaratum G.Z. Li	Synonym		TRO
Rhododendron moultonii Ridl.	Unresolved		WCSP (in review)
Rhododendron moupinense Franch.	Accepted		TRO
Rhododendron mucronatum (Blume) G. Don	Accepted		TRO
Rhododendron mucronulatum Turcz.	Accepted		TRO
Rhododendron mucronulatum var. ciliatum Nakai	Synonym		TRO
Rhododendron mucronulatum subsp. sichotense (Pojark.) A.P. Khokhr.	Accepted		TRO
Rhododendron muliense Balf. f. & Forrest	Synonym		TRO
Rhododendron multicolor Miq.	Unresolved		WCSP (in review)
Rhododendron multinervium Sleumer	Unresolved		WCSP (in review)
Rhododendron murudense Merr.	Unresolved		WCSP (in review)
Rhododendron muscicola J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron mussotii Franch.	Unresolved		TRO
Rhododendron mutabile Webb ex Royle	Unresolved		WCSP (in review)
Rhododendron myiagrum Balf. f. & Forrest	Synonym		TRO
Rhododendron myrsinifolium Ching ex W.P. Fang & M.Y. He	Accepted		TRO
Rhododendron myrsinites Sleumer	Unresolved		WCSP (in review)
Rhododendron myrtifolium Schott & Kotschy	Accepted		TRO
Rhododendron myrtilloides Balf. f. & Kingdon-Ward	Synonym		TRO
Rhododendron naamkwanense Merr.	Accepted		TRO
Rhododendron naamkwanense var. naamkwanense	Accepted		TRO
Rhododendron nagasakianum Nakai	Unresolved		WCSP (in review)
Rhododendron nakaharae Hayata	Accepted		TRO
Rhododendron nakaii Komatsu	Unresolved		WCSP (in review)
Rhododendron nakotiltum Balf. f. & Forrest	Accepted		TRO
Rhododendron nanjianense K.M. Feng & Z.H. Yang	Accepted		TRO
Rhododendron nankotaisanense Hayata	Synonym		TRO
Rhododendron nanophyton Sleumer	Unresolved		WCSP (in review)
Rhododendron nanothamnum Balf. f. & Forrest	Synonym		TRO
Rhododendron nanpingense P.C. Tam	Accepted		TRO
Rhododendron nanum H. Lév.	Synonym		TRO
Rhododendron narcissiflorum Planch.	Unresolved		WCSP (in review)
Rhododendron natalicium Sleumer	Unresolved		WCSP (in review)
Rhododendron nayarii G.D.Pal	Unresolved		WCSP (in review)
Rhododendron nebrites Balf. f. & Forrest	Synonym		TRO
Rhododendron × nebulicola Danet	Unresolved		WCSP (in review)
Rhododendron neglectum (Ashe) Ashe	Accepted		TRO
Rhododendron nematocalyx Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron nemorosum R.C. Fang	Synonym		TRO
Rhododendron neobritannicum Sleumer	Unresolved		WCSP (in review)
Rhododendron neoglandulosum Harmaja	Synonym		TRO
Rhododendron nepalense Voss	Unresolved		WCSP (in review)
Rhododendron neriiflorum Franch.	Accepted		TRO
Rhododendron neriiflorum subsp. agetum (Balf. f. & Forrest) Tagg	Synonym		TRO
Rhododendron neriiflorum var. agetum (Balf. f. & Forrest) T.L. Ming	Accepted		TRO
Rhododendron neriiflorum var. appropinquans (Tagg & Forrest) W.K. Hu	Accepted		TRO
Rhododendron neriiflorum subsp. euchaites (Balf. f. & Forrest) Tagg	Synonym		TRO
Rhododendron neriiflorum var. euchaites (Balf. f. & Forrest) Davidian	Synonym		TRO
Rhododendron neriiflorum var. neriiflorum	Accepted		TRO
Rhododendron neriiflorum subsp. phaedropum (Balf. f. & Farrer) Tagg	Synonym		TRO
Rhododendron neriiflorum var. phaedropum (Balf. f. & Farrer) T.L. Ming	Synonym		TRO
Rhododendron neriiflorum subsp. phoenicodum (Balf. f. & Farrer) Tagg	Synonym		TRO
Rhododendron neriifolium Schltr.	Unresolved		WCSP (in review)
Rhododendron nervosulum Sleumer	Unresolved		WCSP (in review)
Rhododendron netternichii var. pentamerum Maxim.	Synonym		TRO
Rhododendron ngawchangensis M.N.Philipson & Philipson	Unresolved		WCSP (in review)
Rhododendron nhatrangense Dop	Unresolved		WCSP (in review)
Rhododendron nieuwenhuisii J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron nigroglandulosum Nitz.	Accepted		TRO
Rhododendron nigropunctatum Bureau & Franch.	Synonym		TRO
Rhododendron niko-montanum (Komatsu) Nakai	Unresolved		WCSP (in review)
Rhododendron nikoense Nakai	Unresolved		WCSP (in review)
Rhododendron nilagiricum Zenker	Unresolved		WCSP (in review)
Rhododendron ningyuenense Hand.-Mazz.	Synonym		TRO
Rhododendron niphargum Balf. f. & Kingdon-Ward	Synonym		TRO
Rhododendron niphobolum Balf. f. & Farrer	Synonym		TRO
Rhododendron nipponicum Matsum.	Unresolved		WCSP (in review)
Rhododendron nishiokae H.Hara	Unresolved		WCSP (in review)
Rhododendron nitidulum Rehder & E.H. Wilson	Accepted		TRO
Rhododendron nitidulum var. nitidulum	Accepted		TRO
Rhododendron nitidulum var. nubigenum Rehder & E.H. Wilson	Synonym		TRO
Rhododendron nitidum (Pursh) Torr.	Synonym		TRO
Rhododendron nivale Hook. f.	Accepted		TRO
Rhododendron nivale subsp. boreale Philipson & M.N. Philipson	Accepted		TRO
Rhododendron nivale subsp. nivale	Accepted		TRO
Rhododendron niveoflorum Argent	Unresolved		WCSP (in review)
Rhododendron niveum Hook. f.	Accepted		TRO
Rhododendron nobile Wall.	Unresolved		WCSP (in review)
Rhododendron nobleanum Lindl.	Unresolved		WCSP (in review)
Rhododendron nodosum C.H.Wright	Unresolved		WCSP (in review)
Rhododendron nomophilum Balf.f. ex Tagg	Unresolved		WCSP (in review)
Rhododendron noriakianum Suzuki	Accepted		TRO
Rhododendron nortoniae Merr.	Unresolved		WCSP (in review)
Rhododendron notatum Hutch.	Synonym		TRO
Rhododendron notiale Craven	Unresolved		WCSP (in review)
Rhododendron nubicola Wernham	Unresolved		WCSP (in review)
Rhododendron nudiflorum f. album (Aiton) Rehder	Synonym		TRO
Rhododendron nudiflorum f. glandiferum (Porter) Fernald	Synonym		TRO
Rhododendron nudiflorum var. roseum (Loisel.) Wiegand	Unresolved		TRO
Rhododendron nudipes Nakai	Unresolved		WCSP (in review)
Rhododendron nudipes var. tsurugisanense T.Yamaz.	Unresolved		WCSP (in review)
Rhododendron nudipes subsp. yakumontanum T.Yamaz.	Unresolved		WCSP (in review)
Rhododendron nummatum J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron nuttallii Booth ex Nutt.	Accepted		TRO
Rhododendron nwaiense Balf.f. & W.W.Sm.	Unresolved		WCSP (in review)
Rhododendron nyingchiense R.C. Fang & S.H. Huang	Accepted		TRO
Rhododendron nymphaeoides W.K. Hu	Accepted		TRO
Rhododendron o-murasaki Makino	Unresolved		WCSP (in review)
Rhododendron oblancifolium M.Y. Fang	Accepted		TRO
Rhododendron oblongifolium (Small) Millais	Accepted		TRO
Rhododendron oblongum Griff.	Synonym		TRO
Rhododendron obovatum Hook.f.	Unresolved		WCSP (in review)
Rhododendron obscurinervium Merr.	Unresolved		WCSP (in review)
Rhododendron obscurum Franch. ex Balf. f.	Synonym		TRO
Rhododendron obtusum (Lindl.) Planch.	Accepted		TRO
Rhododendron occidentale (Torr. & A. Gray) A. Gray	Accepted		TRO
Rhododendron ochraceum Rehder & E.H. Wilson	Accepted		TRO
Rhododendron ochrocalyx Delavay ex Millais	Unresolved		WCSP (in review)
Rhododendron octandrum M.Y. He	Accepted		TRO
Rhododendron odoratum Lodd. ex Steud.	Unresolved		WCSP (in review)
Rhododendron odoriferum Hutch.	Synonym		TRO
Rhododendron officinale Salisb.	Synonym		TRO
Rhododendron oldhamii Maxim.	Accepted		TRO
Rhododendron oldhamii var. glandulosum Hayata	Synonym		TRO
Rhododendron oleifolium Franch.	Synonym		TRO
Rhododendron oliganthum Sleumer	Unresolved		WCSP (in review)
Rhododendron oligocarpum W.P. Fang	Accepted		TRO
Rhododendron ombrochares Balf. f. & Kingdon-Ward	Synonym		TRO
Rhododendron openshawianum Rehder & E.H. Wilson	Synonym		TRO
Rhododendron oporinum Balf. f. & Kingdon-Ward	Synonym		TRO
Rhododendron opulentum Sleumer	Unresolved		WCSP (in review)
Rhododendron oranum J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron orbiculare Decne.	Accepted		TRO
Rhododendron orbiculare subsp. cardiobasis (Sleumer) D.F. Chamb.	Accepted		TRO
Rhododendron orbiculare subsp. orbiculare	Accepted		TRO
Rhododendron orbiculatum Ridl.	Unresolved		WCSP (in review)
Rhododendron oreadum Wernham	Unresolved		WCSP (in review)
Rhododendron oreinum Balf. f.	Synonym		TRO
Rhododendron oreites Sleumer	Unresolved		WCSP (in review)
Rhododendron oreodoxa Franch.	Accepted		TRO
Rhododendron oreodoxa var. fargesii (Franch.) D.F. Chamb.	Accepted		TRO
Rhododendron oreodoxa var. oreodoxa	Accepted		TRO
Rhododendron oreogenum L.C. Hu	Accepted		TRO
Rhododendron oreotrephes W.W. Sm.	Accepted		TRO
Rhododendron oresbium Balf. f. & Kingdon-Ward	Synonym		TRO
Rhododendron oresterum Balf. f. & Forrest	Synonym		TRO
Rhododendron orientale Wehmer	Unresolved		WCSP (in review)
Rhododendron orion Ridl.	Unresolved		WCSP (in review)
Rhododendron × ornatissimum Verschaff.	Unresolved		WCSP (in review)
Rhododendron ornatum Sweet	Unresolved		WCSP (in review)
Rhododendron orthocladum Balf. f. & Forrest	Accepted		TRO
Rhododendron orthocladum var. microleucum (Hutch.) Philipson & M.N. Philipson	Synonym		TRO
Rhododendron orthocladum var. orthocladum	Accepted		TRO
Rhododendron osakazuki Komatsu	Unresolved		WCSP (in review)
Rhododendron osuzuyamense T.Yamaz.	Unresolved		WCSP (in review)
Rhododendron oulotrichum Balf. f. & Forrest	Synonym		TRO
Rhododendron ovatosepalum Yamam.	Synonym		TRO
Rhododendron ovatum (Lindl.) Planch. ex Maxim.	Accepted		TRO
Rhododendron ovatum var. lamprophyllum (Hayata) Y.C. Liu	Synonym		TRO
Rhododendron ovatum var. prismatum P.C. Tam	Synonym		TRO
Rhododendron ovatum var. setuliferum M.Y. He	Synonym		TRO
Rhododendron oxycoccoides Sleumer	Unresolved		WCSP (in review)
Rhododendron oxyphyllum Franch.	Synonym		TRO
Rhododendron pachycarpon Sleumer	Unresolved		WCSP (in review)
Rhododendron pachyphyllum W.P. Fang	Accepted		TRO
Rhododendron pachypodum Balf. f. & W.W. Sm.	Accepted		TRO
Rhododendron pachysanthum Hayata	Accepted		TRO
Rhododendron pachystigma Sleumer	Unresolved		WCSP (in review)
Rhododendron pachytrichum Franch.	Accepted		TRO
Rhododendron pachytrichum var. monosematum (Hutch.) D.F. Chamb.	Synonym		TRO
Rhododendron pagophilum Balf. f. & Kingdon-Ward	Synonym		TRO
Rhododendron pallescens Hutch.	Unresolved		WCSP (in review)
Rhododendron pallidum Dummer	Unresolved		WCSP (in review)
Rhododendron paludosum Hutch. & Kingdon-Ward	Synonym		TRO
Rhododendron palustre Turcz.	Synonym		TRO
Rhododendron palustre (L.) Kron & Judd	Synonym		TRO
Rhododendron pankimense Cowan & Kingdon-Ward	Synonym		TRO
Rhododendron panteumorphum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron papillatum Balf. f. & R.E. Cooper	Accepted		TRO
Rhododendron papuanum Becc.	Unresolved		WCSP (in review)
Rhododendron papyrociliare P.C. Tam	Synonym		TRO
Rhododendron paradoxum Balf. f.	Accepted		TRO
Rhododendron × paradoxum Balf. f.	Unresolved		TRO
Rhododendron parishii C.B.Clarke	Unresolved		WCSP (in review)
Rhododendron parmulatum Cowan	Accepted		TRO
Rhododendron parryae Hutch.	Unresolved		WCSP (in review)
Rhododendron partitum J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron parviflorum F. Schmidt	Synonym		TRO
Rhododendron parvifolium Adams	Synonym		TRO
Rhododendron parvifolium subsp. confertissimum (Nakai) A.P. Khokhr.	Synonym		TRO
Rhododendron parvulum Sleumer	Unresolved		WCSP (in review)
Rhododendron patuergensis S.S.Ying	Unresolved		WCSP (in review)
Rhododendron patulum Kingdon-Ward	Unresolved		WCSP (in review)
Rhododendron pauciflorum King & Gamble	Unresolved		WCSP (in review)
Rhododendron pectinatum Hutch.	Synonym		TRO
Rhododendron × pelargoniiflorum Van Houtte	Unresolved		WCSP (in review)
Rhododendron pemakoense Kingdon-Ward	Accepted		TRO
Rhododendron pendulum Hook. f.	Accepted		TRO
Rhododendron pennivenium Balf. f. & Forrest	Synonym		TRO
Rhododendron × pennsylvanicum (B.E.Harkn.) Rehder	Unresolved		WCSP (in review)
Rhododendron pentamerum (Maxim.) Matsum. & Nakai	Unresolved		WCSP (in review)
Rhododendron pentaphyllum Maxim.	Unresolved		WCSP (in review)
Rhododendron perakense King & Gamble	Unresolved		WCSP (in review)
Rhododendron peramabile Hutch.	Synonym		TRO
Rhododendron peramoenum Balf. f. & Forrest	Synonym		TRO
Rhododendron peregrinum Tagg	Accepted		TRO
Rhododendron periclymenoides (Michx.) Shinners	Accepted		TRO
Rhododendron periclymenoides f. album (Aiton) C.F. Reed	Accepted		TRO
Rhododendron periclymenoides f. glandiferum (Porter) C.F. Reed	Accepted		TRO
Rhododendron perplexum Sleumer	Unresolved		WCSP (in review)
Rhododendron persicinum Hand.-Mazz.	Synonym		TRO
Rhododendron perulatum Balf. f. & Forrest	Synonym		TRO
Rhododendron petelotii Dop	Unresolved		WCSP (in review)
Rhododendron petilum P.C. Tam	Synonym		TRO
Rhododendron petrocharis Diels	Accepted		TRO
Rhododendron phaedropum Balf. f. & Farrer	Synonym		TRO
Rhododendron phaeochiton F.Muell.	Unresolved		WCSP (in review)
Rhododendron phaeochitum F. Muell.	Unresolved		TRO
Rhododendron phaeochlorum Balf. f. & Forrest	Synonym		TRO
Rhododendron phaeochristum Sleumer	Unresolved		WCSP (in review)
Rhododendron phaeochrysum Balf. f. & W.W. Sm.	Accepted		TRO
Rhododendron phaeochrysum var. agglutinatum (Balf. f. & Forrest) D.F. Chamb.	Accepted		TRO
Rhododendron phaeochrysum var. levistratum (Balf. f. & Forrest) D.F. Chamb.	Accepted		TRO
Rhododendron phaeochrysum var. phaeochrysum	Accepted		TRO
Rhododendron phaeopeplum Sleumer	Unresolved		WCSP (in review)
Rhododendron phaeops Sleumer	Unresolved		WCSP (in review)
Rhododendron phoeniceum G.Don	Unresolved		WCSP (in review)
Rhododendron phoeniceum f. smithii (Sweet) E.H. Wilson	Synonym		TRO
Rhododendron phoenicodum Balf. f. & Farrer	Synonym		TRO
Rhododendron pholidotum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron piceum P.C. Tam	Synonym		TRO
Rhododendron × pictum J.Forbes	Unresolved		WCSP (in review)
Rhododendron piercei Davidian	Accepted		TRO
Rhododendron pilicalyx Hutch.	Synonym		TRO
Rhododendron pilostylum W.K. Hu	Accepted		TRO
Rhododendron pilovittatum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron pinetorum P.C. Tam	Accepted		TRO
Rhododendron pingbianense M.Y. Fang	Accepted		TRO
Rhododendron pingianum W.P. Fang	Accepted		TRO
Rhododendron pittosporifolium Hemsl.	Synonym		TRO
Rhododendron planecostatum Sleumer	Unresolved		WCSP (in review)
Rhododendron planetum Balf.f.	Unresolved		WCSP (in review)
Rhododendron planifolium Nutt.	Unresolved		WCSP (in review)
Rhododendron platyphyllum (Franch. ex Diels) Balf. f. & W.W. Sm.	Accepted		TRO
Rhododendron platypodum Diels	Accepted		TRO
Rhododendron plebeium Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron pleistanthum Balf. f. ex Hutch.	Synonym		TRO
Rhododendron pleistanthum E.H. Wilding	Accepted		TRO
Rhododendron pneumonanthum Sleumer	Unresolved		WCSP (in review)
Rhododendron pocophorum Balf. f. ex Tagg	Accepted		TRO
Rhododendron pocophorum var. hemidartum (Balf. f. ex Tagg) D.F. Chamb.	Accepted		TRO
Rhododendron podocarpoides Schltr.	Unresolved		WCSP (in review)
Rhododendron poecilodermum Balf. f. & Forrest	Synonym		TRO
Rhododendron pogonophyllum Cowan & Davidian	Unresolved		WCSP (in review)
Rhododendron pogonostylum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron poilanei Dop	Accepted		TRO
Rhododendron polifolium Franch.	Synonym		TRO
Rhododendron poliopeplum Balf. f. & Forrest	Synonym		TRO
Rhododendron poluninii Davidian	Unresolved		WCSP (in review)
Rhododendron polyandrum Hutch.	Synonym		TRO
Rhododendron polyanthemum Sleumer	Unresolved		WCSP (in review)
Rhododendron polycladum Franch.	Accepted		TRO
Rhododendron polylepis Franch.	Accepted		TRO
Rhododendron polyraphidoideum P.C. Tam	Accepted		TRO
Rhododendron polytrichum W.P. Fang	Accepted		TRO
Rhododendron pomense Cowan & Davidian	Accepted		TRO
Rhododendron ponticum L.	Unresolved		WCSP (in review)
Rhododendron populare Cowan	Accepted		TRO
Rhododendron poremense J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron porphyranthes Sleumer	Unresolved		WCSP (in review)
Rhododendron porphyroblastum Balf. f. & Forrest	Synonym		TRO
Rhododendron porphyrophyllum Balf. f. & Forrest	Synonym		TRO
Rhododendron porrosquameum Balf. f. & Forrest	Synonym		TRO
Rhododendron potaninii Batalin	Accepted		TRO
Rhododendron pothinum Balf. f. & Forrest	Synonym		TRO
Rhododendron poukhanense H.Lév.	Unresolved		WCSP (in review)
Rhododendron praeclarum Balf.f. & Farrer	Unresolved		WCSP (in review)
Rhododendron × praecox I.Davis	Unresolved		WCSP (in review)
Rhododendron praestans Balf. f. & W.W. Sm.	Accepted		TRO
Rhododendron praeteritum Hutch.	Accepted		TRO
Rhododendron praetervisum Sleumer	Unresolved		WCSP (in review)
Rhododendron praevernum Hutch.	Accepted		TRO
Rhododendron prainianum Koord.	Unresolved		WCSP (in review)
Rhododendron prasinocalyx Balf. f. & Forrest	Synonym		TRO
Rhododendron prattii Franch.	Synonym		TRO
Rhododendron preptum Balf. f. & Forrest	Accepted		TRO
Rhododendron primuliflorum Bureau & Franch.	Accepted		TRO
Rhododendron primuliflorum var. cephalanthoides (Balf. f. & W.W. Sm.) Cowan & Davidian	Accepted		TRO
Rhododendron primuliflorum var. lepidanthum Cowan & Davidian	Accepted		TRO
Rhododendron primuliflorum var. primuliflorum	Accepted		TRO
Rhododendron primulinum Hemsl.	Synonym		TRO
Rhododendron principis Bureau & Franch.	Accepted		TRO
Rhododendron principis var. vellereum (Hutch. ex Tagg) T.L. Ming	Synonym		TRO
Rhododendron prinophyllum (Small) Millais	Accepted		TRO
Rhododendron pritzelianum Diels	Synonym		TRO
Rhododendron probum Balf. f. & Forrest	Synonym		TRO
Rhododendron procerum Salisb.	Unresolved		WCSP (in review)
Rhododendron procumbens E.H.L.Krause	Unresolved		WCSP (in review)
Rhododendron proliferum Sleumer	Unresolved		WCSP (in review)
Rhododendron pronum Tagg & Forrest	Accepted		TRO
Rhododendron prophantum Balf. f. & Forrest	Synonym		TRO
Rhododendron propinquum Balf.f. & Kingdon-Ward ex Tagg	Unresolved		WCSP (in review)
Rhododendron prostratum W.W. Sm.	Synonym		TRO
Rhododendron protandrum Sleumer	Unresolved		WCSP (in review)
Rhododendron proteoides Balf. f. & W.W. Sm.	Accepted		TRO
Rhododendron protistum Balf. f. & Forrest	Accepted		TRO
Rhododendron protistum var. giganteum (Forrest ex Tagg) D.F. Chamb.	Accepted		TRO
Rhododendron protistum var. protistum	Accepted		TRO
Rhododendron × pruhonicianum Kavka	Unresolved		WCSP (in review)
Rhododendron pruniflorum Hutch. & Kingdon-Ward	Accepted		TRO
Rhododendron prunifolium (Small) Millais	Accepted		TRO
Rhododendron przewalskii Maxim.	Accepted		TRO
Rhododendron przewalskii subsp. przewalskii	Accepted		TRO
Rhododendron psammogenes Sleumer	Unresolved		WCSP (in review)
Rhododendron pseudobuxifolium Sleumer	Unresolved		WCSP (in review)
Rhododendron pseudochrysanthum Hayata	Accepted		TRO
Rhododendron pseudochrysanthum subsp. morii (Hayata) T. Yamaz.	Synonym		TRO
Rhododendron pseudochrysanthum var. nankotaisanense (Hayata) T. Yamaz.	Synonym		TRO
Rhododendron pseudochrysanthum f. rufovelutinum T. Yamaz.	Synonym		TRO
Rhododendron pseudochrysanthum var. rufovelutinum (T. Yamaz.) T. Yamaz.	Synonym		TRO
Rhododendron pseudochrysanthum var. taitunense T. Yamaz.	Synonym		TRO
Rhododendron pseudociliicalyx Hutch.	Synonym		TRO
Rhododendron pseudociliipes Cullen	Accepted		TRO
Rhododendron pseudomurudense Sleumer	Unresolved		WCSP (in review)
Rhododendron pseudonitens Sleumer	Unresolved		WCSP (in review)
Rhododendron pseudotrichanthum Sleumer	Unresolved		WCSP (in review)
Rhododendron pseudoyanthinum Balf. f. & Hutch.	Synonym		TRO
Rhododendron psilostylum (Rehder & E.H. Wilson) Balf. f.	Synonym		TRO
Rhododendron pubescens Balf. f. & Forrest	Accepted		TRO
Rhododendron pubicostatum T.L. Ming	Accepted		TRO
Rhododendron pubigermen J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron pubigerum Balf. f. & Forrest	Synonym		TRO
Rhododendron pubitubum Sleumer	Unresolved		WCSP (in review)
Rhododendron pudorinum Sleumer	Unresolved		WCSP (in review)
Rhododendron pudorosum Cowan	Accepted		TRO
Rhododendron pugeense L.C. Hu	Accepted		TRO
Rhododendron pulchellum Salisb.	Unresolved		WCSP (in review)
Rhododendron pulcherrimum Lindl.	Unresolved		WCSP (in review)
Rhododendron pulchroides Chun & W.P. Fang	Accepted		TRO
Rhododendron pulchrum Sweet	Accepted		TRO
Rhododendron pulleanum Koord.	Unresolved		WCSP (in review)
Rhododendron pumilum Hook. f.	Accepted		TRO
Rhododendron punctatum Andrews	Unresolved		WCSP (in review)
Rhododendron punctatum var. chapmanii Alph. Wood	Synonym		TRO
Rhododendron punctifolium L.C. Hu	Accepted		TRO
Rhododendron puniceum Roxb.	Synonym		TRO
Rhododendron puralbum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron purdomii Rehder & E.H. Wilson	Accepted		TRO
Rhododendron purpureiflorum J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron purpureum Buch.-Ham. ex D.Don	Unresolved		WCSP (in review)
Rhododendron purshii G.Don	Unresolved		WCSP (in review)
Rhododendron pusillum J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron pycnocladum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron × pyrrhoanthum Balf. f.	Accepted		TRO
Rhododendron pyrrhophorum Sleumer	Unresolved		WCSP (in review)
Rhododendron qianyangense M.Y. He	Accepted		TRO
Rhododendron qiaojiaense L.M. Gao & D.Z. Li	Unresolved		TRO
Rhododendron qinghaiense Ching ex W.Y. Wang	Accepted		TRO
Rhododendron quadrasianum S.Vidal	Unresolved		WCSP (in review)
Rhododendron quadrasianum f. monodii H.J.Lam	Unresolved		WCSP (in review)
Rhododendron quinquefolium Bisset & S.Moore	Unresolved		WCSP (in review)
Rhododendron racemosum Franch.	Accepted		TRO
Rhododendron racemosum var. rigidum (Franch.) Rehnelt	Synonym		TRO
Rhododendron radendum W.P. Fang	Accepted		TRO
Rhododendron radicans Balf. f. & Forrest	Synonym		TRO
Rhododendron radinum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron ramentaceum Planch.	Unresolved		WCSP (in review)
Rhododendron ramipilosum T.L. Ming	Accepted		TRO
Rhododendron ramosissimum Franch.	Synonym		TRO
Rhododendron ramsdenianum Cowan	Accepted		TRO
Rhododendron randaiense Hayata	Unresolved		TRO
Rhododendron rappardii Sleumer	Unresolved		WCSP (in review)
Rhododendron rarilepidotum J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron rarosquameum Balf. f.	Synonym		TRO
Rhododendron rasile Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron ravum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron recurvoides Tagg & Kingdon-Ward	Unresolved		WCSP (in review)
Rhododendron recurvum Balf. f. & Forrest	Synonym		TRO
Rhododendron recurvum var. oreonastes Balf. f. & Forrest	Synonym		TRO
Rhododendron redowskianum Maxim.	Accepted		TRO
Rhododendron reevei Argent	Unresolved		WCSP (in review)
Rhododendron regale Balf. f. & Kingdon-Ward	Synonym		TRO
Rhododendron reginaldii Balf. f. & Forrest	Synonym		TRO
Rhododendron renschianum Sleumer	Unresolved		WCSP (in review)
Rhododendron repens Balf. f. & Forrest	Synonym		TRO
Rhododendron repens var. chamaedoron Tagg & Forrest	Synonym		TRO
Rhododendron repens var. chamaedoron Tagg	Synonym		TRO
Rhododendron repens var. chamaethauma Tagg	Synonym		TRO
Rhododendron repens var. chamaethomsonii Tagg	Synonym		TRO
Rhododendron reticulatum D.Don ex G.Don	Unresolved		WCSP (in review)
Rhododendron retivenium Sleumer	Unresolved		WCSP (in review)
Rhododendron retrorsipilum Sleumer	Unresolved		WCSP (in review)
Rhododendron retusum (Blume) Benn.	Accepted		TRO
Rhododendron retusum var. epilosum J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron revolutum Sleumer	Unresolved		WCSP (in review)
Rhododendron rex H. Lév.	Accepted		TRO
Rhododendron rex subsp. arizelum (Balf. f. & Forrest) D.F. Chamb.	Synonym		TRO
Rhododendron rex subsp. fictolacteum (Balf. f.) D.F. Chamb.	Accepted		TRO
Rhododendron rex subsp. gratum (T.L. Ming) M.Y. Fang	Accepted		TRO
Rhododendron reynosoi Argent	Unresolved		WCSP (in review)
Rhododendron rhabdotum Balf. f. & R.E. Cooper	Synonym		TRO
Rhododendron rhaibocarpum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron rhantum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron rhodanthum M.Y. He	Accepted		TRO
Rhododendron rhodochroum Sleumer	Unresolved		WCSP (in review)
Rhododendron rhododactylum Millais	Unresolved		WCSP (in review)
Rhododendron rhodoleucum Sleumer	Unresolved		WCSP (in review)
Rhododendron rhodopus Sleumer	Unresolved		WCSP (in review)
Rhododendron rhodora J.F.Gmel.	Unresolved		WCSP (in review)
Rhododendron rhodosalpinx Sleumer	Unresolved		WCSP (in review)
Rhododendron rhodostomum Sleumer	Unresolved		WCSP (in review)
Rhododendron rhombicum Miq.	Unresolved		WCSP (in review)
Rhododendron rhombifolium R.C. Fang	Accepted		TRO
Rhododendron rhuyuenense Chun ex P.C. Tam	Accepted		TRO
Rhododendron rigidum Franch.	Accepted		TRO
Rhododendron riparioides (Cullen) Cubey	Accepted		TRO
Rhododendron riparium Kingdon-Ward	Synonym		TRO
Rhododendron riparium WANG & P.C.Tam	Synonym		TRO
Rhododendron ripicola P.C. Tam	Synonym		TRO
Rhododendron ripleyi Merr.	Unresolved		WCSP (in review)
Rhododendron ririei Hemsl. & E.H. Wilson	Accepted		TRO
Rhododendron rivulare Kingdon-Ward	Synonym		TRO
Rhododendron rivulare Hand.-Mazz.	Accepted		TRO
Rhododendron robinsonii Ridl.	Unresolved		WCSP (in review)
Rhododendron rockii E.H. Wilson	Synonym		TRO
Rhododendron rollissonii Lindl.	Unresolved		WCSP (in review)
Rhododendron roseatum Hutch.	Accepted		TRO
Rhododendron roseiflorum P.F.Stevens	Unresolved		WCSP (in review)
Rhododendron rosendahlii Sleumer	Unresolved		WCSP (in review)
Rhododendron roseotinctum Balf. f. & Forrest	Synonym		TRO
Rhododendron roseum (Loisel.) Rehder	Synonym		TRO
Rhododendron × rosifaciens R.I.Milne	Unresolved		WCSP (in review)
Rhododendron rosmarinifolium (Burm. f.) Dippel	Synonym		TRO
Rhododendron rosthornii Diels	Synonym		TRO
Rhododendron rothschildii Davidian	Accepted		TRO
Rhododendron rotundifolium David ex Franch.	Synonym		TRO
Rhododendron rousei Argent & Madulid	Unresolved		WCSP (in review)
Rhododendron × rovellii Leroy	Unresolved		WCSP (in review)
Rhododendron roxieanum Forrest	Accepted		TRO
Rhododendron roxieanum var. cucullatum (Hand.-Mazz.) D.F. Chamb.	Accepted		TRO
Rhododendron roxieanum var. globigerum (Balf. f. & Forrest) D.F. Chamb.	Synonym		TRO
Rhododendron roxieanum var. oreonastes (Balf. f. & Forrest) T.L. Ming	Accepted		TRO
Rhododendron roxieanum var. recurvum (Balf. f. & Forrest) Davidian	Synonym		TRO
Rhododendron roxieanum var. roxieanum	Accepted		TRO
Rhododendron roxieoides D.F. Chamb.	Accepted		TRO
Rhododendron roylei Hook. f.	Synonym		TRO
Rhododendron rubellum Sleumer	Unresolved		WCSP (in review)
Rhododendron rubiginosum Franch.	Accepted		TRO
Rhododendron rubiginosum var. leclerei (H. Lév.) R.C. Fang	Accepted		TRO
Rhododendron rubiginosum var. rubiginosum	Accepted		TRO
Rhododendron rubineiflorum Craven	Unresolved		WCSP (in review)
Rhododendron rubrantherum Kingdon-Ward	Unresolved		WCSP (in review)
Rhododendron rubrobracteatum Sleumer	Unresolved		WCSP (in review)
Rhododendron rubrolineatum Balf. f. & Forrest	Synonym		TRO
Rhododendron rubroluteum Davidian	Synonym		TRO
Rhododendron rubropilosum Hayata	Accepted		TRO
Rhododendron rubropilosum var. breviperulatum (Hayata) T. Yamaz.	Synonym		TRO
Rhododendron rubropilosum var. taiwanalpinum (Ohwi) S.Y. Lu, Yuen P. Yang & Y.H. Tseng	Synonym		TRO
Rhododendron rubropunctatum H. Lév. & Vaniot	Synonym		TRO
Rhododendron rubropunctatum Hayata	Synonym		TRO
Rhododendron rubropunctatum T.L. Ming	Synonym		TRO
Rhododendron rude Tagg & Forrest	Synonym		TRO
Rhododendron rufescens Franch.	Accepted		TRO
Rhododendron rufescens P.C. Tam	Synonym		TRO
Rhododendron rufohirtum Hand.-Mazz.	Accepted		TRO
Rhododendron rufosquamosum Hutch.	Synonym		TRO
Rhododendron rufulum P.C. Tam	Synonym		TRO
Rhododendron rufum Batalin	Accepted		TRO
Rhododendron rufum var. pachysanthum (Hayata) S.S. Ying	Synonym		TRO
Rhododendron rugosum H.Low ex Hook.f.	Unresolved		WCSP (in review)
Rhododendron rupicola W.W. Sm.	Accepted		TRO
Rhododendron rupicola var. chryseum (Balf. f. & Kingdon-Ward) Philipson & M.N. Philipson	Accepted		TRO
Rhododendron rupicola var. muliense (Balf. f. & Forrest) Philipson & M.N. Philipson	Accepted		TRO
Rhododendron rupicola var. rupicola	Accepted		TRO
Rhododendron rupivalleculatum P.C. Tam	Accepted		TRO
Rhododendron rushforthii Argent & D.F. Chamb.	Accepted		TRO
Rhododendron russatum Balf. f. & Forrest	Accepted		TRO
Rhododendron × russelianum Sweet	Unresolved		WCSP (in review)
Rhododendron russotinctum Balf. f. & Forrest	Synonym		TRO
Rhododendron ruttenii J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron saavedranum Diels	Unresolved		WCSP (in review)
Rhododendron saisiuense Nakai	Unresolved		WCSP (in review)
Rhododendron sakawanum Makino	Unresolved		WCSP (in review)
Rhododendron salicifolium Becc.	Unresolved		WCSP (in review)
Rhododendron salignum Hook.f.	Unresolved		WCSP (in review)
Rhododendron × salmoneum auct.	Unresolved		WCSP (in review)
Rhododendron × salmoneum Voss	Unresolved		WCSP (in review)
Rhododendron saluenense Franch.	Accepted		TRO
Rhododendron saluenense subsp. chameunum (Balf. f. & Forrest) Cullen in Cullen & D. F. Chamb.	Synonym		TRO
Rhododendron saluenense var. prostratum (W.W. Sm.) R.C. Fang	Accepted		TRO
Rhododendron saluenense var. saluenense	Accepted		TRO
Rhododendron sanctum Nakai	Unresolved		WCSP (in review)
Rhododendron sanguineum Franch.	Accepted		TRO
Rhododendron sanguineum subsp. aizoides Cowan	Synonym		TRO
Rhododendron sanguineum subsp. cloiophorum (Balf. f. & Forrest) Cowan	Synonym		TRO
Rhododendron sanguineum var. cloiophorum (Balf. f. & Forrest) D.F. Chamb.	Accepted		TRO
Rhododendron sanguineum var. consanguinem (Cowan) Davidian	Synonym		TRO
Rhododendron sanguineum subsp. consanguineum Cowan	Synonym		TRO
Rhododendron sanguineum var. didymoides Tagg & Forrest	Accepted		TRO
Rhododendron sanguineum subsp. didymoides (Tagg & Forrest) Cowan	Synonym		TRO
Rhododendron sanguineum subsp. didymum (Balf. f. & Forrest) Cowan	Synonym		TRO
Rhododendron sanguineum var. didymum (Balf. f. & Forrest) T.L. Ming	Accepted		TRO
Rhododendron sanguineum subsp. haemaleum (Balf. f. & Forrest) Cowan	Synonym		TRO
Rhododendron sanguineum var. haemaleum (Balf. f. & Forrest) D.F. Chamb.	Accepted		TRO
Rhododendron sanguineum subsp. himertum (Balf. f. & Forrest) Cowan	Synonym		TRO
Rhododendron sanguineum var. himertum (Balf. f. & Forrest) D.F. Chamb.	Accepted		TRO
Rhododendron sanguineum subsp. leucopetalum (Balf. f. & Forrest) Cowan	Synonym		TRO
Rhododendron sanguineum subsp. melleum Cowan	Synonym		TRO
Rhododendron sanguineum subsp. mesaeum Balf. f. ex Cowan	Synonym		TRO
Rhododendron sanguineum var. mesaeum Davidian	Synonym		TRO
Rhododendron sanguineum subsp. roseotinctum (Balf. f. & Forrest) Cowan	Synonym		TRO
Rhododendron sanguineum subsp. sanguineoides Cowan	Synonym		TRO
Rhododendron sanguineum var. sanguineoides (Cowan) Davidian	Synonym		TRO
Rhododendron sanguineum var. sanguineum	Accepted		TRO
Rhododendron sanidodeum P.C. Tam	Synonym		TRO
Rhododendron santapaui Sastry & al.	Unresolved		WCSP (in review)
Rhododendron saravanense Dop	Unresolved		WCSP (in review)
Rhododendron sarcodes Argent & Madulid	Unresolved		WCSP (in review)
Rhododendron sargentianum Rehder & E.H. Wilson	Accepted		TRO
Rhododendron saruwagedicum F.Först.	Unresolved		WCSP (in review)
Rhododendron sasakii E.H. Wilson	Synonym		TRO
Rhododendron saxatile B.Y. Ding & Y.Y. Fang	Accepted		TRO
Rhododendron saxicola Sleumer	Unresolved		WCSP (in review)
Rhododendron saxifragoides J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron scabridibracteum Sleumer	Unresolved		WCSP (in review)
Rhododendron scabrifolium Franch.	Accepted		TRO
Rhododendron scabrifolium var. spiciferum (Franch.) Cullen	Synonym		TRO
Rhododendron scabrum G.Don	Unresolved		WCSP (in review)
Rhododendron scarlatinum Sleumer	Unresolved		WCSP (in review)
Rhododendron schadenbergii Warb.	Unresolved		WCSP (in review)
Rhododendron schistocalyx Balf. f. & Forrest	Accepted		TRO
Rhododendron schizopeplum Balf. f. & Forrest	Synonym		TRO
Rhododendron schizostigma Sleumer	Unresolved		WCSP (in review)
Rhododendron schlechteri Lauterb.	Unresolved		WCSP (in review)
Rhododendron schlippenbachii Maxim.	Accepted		TRO
Rhododendron schoddei Sleumer	Unresolved		WCSP (in review)
Rhododendron schultzei Schltr.	Unresolved		WCSP (in review)
Rhododendron sciaphilum Balf.f. & Kingdon-Ward	Unresolved		WCSP (in review)
Rhododendron scintillans Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron sclerocladum Balf. f. & Forrest	Synonym		TRO
Rhododendron scopulorum Hutch.	Accepted		TRO
Rhododendron scortechinii King & Gamble	Unresolved		WCSP (in review)
Rhododendron scottianum Hutch.	Synonym		TRO
Rhododendron scottiatum Hutch.	Unresolved		WCSP (in review)
Rhododendron scyphocalyx Balf. f. & Forrest	Synonym		TRO
Rhododendron searleanum Sleumer	Unresolved		WCSP (in review)
Rhododendron searsiae Rehder & E.H. Wilson	Accepted		TRO
Rhododendron seguinii H. Lév.	Synonym		TRO
Rhododendron seimundii J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron seinghkuense Kingdon-Ward	Accepted		TRO
Rhododendron seinghkuense Kingdon-Ward ex Hutch.	Unresolved		TRO
Rhododendron × sekidera Komatsu	Unresolved		WCSP (in review)
Rhododendron selense Franch.	Accepted		TRO
Rhododendron selense subsp. dasycladum (Balf. f. & W.W. Sm.) D.F. Chamb.	Accepted		TRO
Rhododendron selense var. dasycladum (Balf. f. & W.W. Sm.) T.L. Ming	Synonym		TRO
Rhododendron selense subsp. duseimatum (Balf. f. & Forrest) Tagg	Synonym		TRO
Rhododendron selense var. duseimatum (Balf. f. & Forrest) Cowan & Davidian	Synonym		TRO
Rhododendron selense subsp. jucundum (Balf. f. & W.W. Sm.) D.F. Chamb.	Accepted		TRO
Rhododendron selense var. jucundum (Balf. f. & W.W. Sm.) T.L. Ming	Synonym		TRO
Rhododendron selense var. pagophilum (Balf. f. & Kingdon-Ward) Cowan & Davidian	Synonym		TRO
Rhododendron selense var. probum (Balf. f. & Forrest) Cowan & Davidian	Synonym		TRO
Rhododendron selense subsp. selense	Accepted		TRO
Rhododendron selense subsp. setiferum (Balf. f. & Forrest) D.F. Chamb.	Synonym		TRO
Rhododendron semibarbatum Maxim.	Unresolved		WCSP (in review)
Rhododendron semilunatum Balf. f. & Forrest	Synonym		TRO
Rhododendron semnoides Tagg & Forrest	Accepted		TRO
Rhododendron semnum Balf. f. & Forrest	Synonym		TRO
Rhododendron seniavinii Maxim.	Accepted		TRO
Rhododendron seniavinii var. crassifolium P.C. Tam	Synonym		TRO
Rhododendron seranense J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron sericocalyx Balf.f.	Unresolved		WCSP (in review)
Rhododendron sermum Balf.f. & Forrest	Unresolved		WCSP (in review)
Rhododendron serotinum Hutch.	Accepted		TRO
Rhododendron serpens Balf. f. & Forrest	Synonym		TRO
Rhododendron serpyllifolium Miq.	Unresolved		WCSP (in review)
Rhododendron serrulatum (Small) Millais	Synonym		TRO
Rhododendron sessilifolium J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron × sesterianum G.Nicholson	Unresolved		WCSP (in review)
Rhododendron setiferum Balf. f. & Forrest	Accepted		TRO
Rhododendron setosum D. Don	Accepted		TRO
Rhododendron × seymouri Herb. ex Otto & Dietr.	Unresolved		WCSP (in review)
Rhododendron shaanxiense W.P. Fang & Z.J. Zhao	Synonym		TRO
Rhododendron shangyounicum L.M.Cao & R.L. Liu	Unresolved		TRO
Rhododendron shanii W.P. Fang	Accepted		TRO
Rhododendron sheilae Sleumer	Unresolved		WCSP (in review)
Rhododendron sheltoniae Hemsl. & E.H. Wilson	Synonym		TRO
Rhododendron shepherdii Nutt.	Synonym		TRO
Rhododendron sherriffii Cowan	Accepted		TRO
Rhododendron shikokianum Makino	Unresolved		WCSP (in review)
Rhododendron shimenense Q.X. Liu & C.M. Zhang	Accepted		TRO
Rhododendron shimianense W.P. Fang & P.S. Liu	Accepted		TRO
Rhododendron shimidzuanum Honda ex Makino & Nemoto	Unresolved		WCSP (in review)
Rhododendron shiwandashanense P.C. Tam	Synonym		TRO
Rhododendron shojoense Hayata	Synonym		TRO
Rhododendron shweliense Balf. f. & Forrest	Accepted		TRO
Rhododendron siamense Diels	Synonym		TRO
Rhododendron sichotense Pojark.	Synonym		TRO
Rhododendron sidereum Balf. f.	Accepted		TRO
Rhododendron siderophylloides Hutch.	Synonym		TRO
Rhododendron siderophyllum Franch.	Accepted		TRO
Rhododendron sieboldii Miq.	Unresolved		WCSP (in review)
Rhododendron sigillatum Balf. f. & Forrest	Synonym		TRO
Rhododendron sikangense W.P. Fang	Accepted		TRO
Rhododendron sikangense var. exquisitum T.L. Ming	Accepted		TRO
Rhododendron sikangense var. sikangense	Accepted		TRO
Rhododendron sikayotaizanense Masam.	Accepted		TRO
Rhododendron sikkimense Pradhan & Lachungpa	Unresolved		WCSP (in review)
Rhododendron silvaticum Cowan	Synonym		TRO
Rhododendron simiarum Hance	Accepted		TRO
Rhododendron simiarum var. deltoideum P.C. Tam	Synonym		TRO
Rhododendron simiarum var. simiarum	Accepted		TRO
Rhododendron simiarum var. versicolor (Chun & W.P. Fang) M.Y. Fang	Accepted		TRO
Rhododendron simiarum subsp. youngiae (W.P. Fang) D.F. Chamb.	Synonym		TRO
Rhododendron simsii Planch.	Accepted		TRO
Rhododendron simsii var. simsii	Accepted		TRO
Rhododendron simulans (Tagg & Forrest) D.F. Chamb.	Synonym		TRO
Rhododendron sinense (Lodd.) Sweet	Synonym		TRO
Rhododendron sinofalconeri Balf. f.	Accepted		TRO
Rhododendron sinogrande Balf. f. & W.W. Sm.	Accepted		TRO
Rhododendron sinogrande var. boreale Tagg & Forrest	Synonym		TRO
Rhododendron sinolepidotum Balf. f.	Synonym		TRO
Rhododendron sinonuttallii Balf. f. & Forrest	Accepted		TRO
Rhododendron × sinosimulans D.F. Chamb.	Accepted		TRO
Rhododendron sinovaccinioides Balf. f. & Forrest	Synonym		TRO
Rhododendron sleumeri Gilli	Unresolved		WCSP (in review)
Rhododendron smilesii Hutch.	Unresolved		WCSP (in review)
Rhododendron smirnowii Trautv. ex Regel	Unresolved		WCSP (in review)
Rhododendron smirnowii Trautv.	Unresolved		WCSP (in review)
Rhododendron smithii Nutt. ex Hook.	Synonym		TRO
Rhododendron × sochadzeae Kharadze & Davlian.	Unresolved		WCSP (in review)
Rhododendron solitarium Sleumer	Unresolved		WCSP (in review)
Rhododendron sonomense Greene	Unresolved		WCSP (in review)
Rhododendron sororium Sleumer	Unresolved		WCSP (in review)
Rhododendron souliei Franch.	Accepted		TRO
Rhododendron spadiceum P.C. Tam	Accepted		TRO
Rhododendron spanotrichum Balf. f. & W.W. Sm.	Accepted		TRO
Rhododendron sparsiflorum Nutt.	Unresolved		WCSP (in review)
Rhododendron sparsifolium W.P. Fang	Accepted		TRO
Rhododendron spathulatum Ridl.	Unresolved		WCSP (in review)
Rhododendron speciosum Sweet	Unresolved		WCSP (in review)
Rhododendron speciosum Salisb.	Unresolved		WCSP (in review)
Rhododendron spectabile Merr.	Unresolved		WCSP (in review)
Rhododendron sperabile Balf. f. & Farrer	Accepted		TRO
Rhododendron sperabiloides Tagg & Forrest	Accepted		TRO
Rhododendron sphaeranthum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron sphaeroblastum Balf. f. & Forrest	Accepted		TRO
Rhododendron spiciferum Franch.	Accepted		TRO
Rhododendron spiciferum var. spiciferum	Accepted		TRO
Rhododendron spilanthum Hutch.	Synonym		TRO
Rhododendron spilotum Balf.f. & Farrer	Unresolved		WCSP (in review)
Rhododendron spinigerum H. Lév.	Synonym		TRO
Rhododendron spinuliferum Franch.	Accepted		TRO
Rhododendron spinuliferum var. spinuliferum	Accepted		TRO
Rhododendron × spinulosum Hadden	Unresolved		WCSP (in review)
Rhododendron spodopeplum Balf.f. & Farrer	Unresolved		WCSP (in review)
Rhododendron spondylophyllum F.Muell.	Unresolved		WCSP (in review)
Rhododendron spooneri Hemsl. & E.H. Wilson	Synonym		TRO
Rhododendron squarrosum Balf.f.	Unresolved		WCSP (in review)
Rhododendron stamineum Franch.	Accepted		TRO
Rhododendron stamineum var. stamineum	Accepted		TRO
Rhododendron × standishii Paxton	Unresolved		WCSP (in review)
Rhododendron stapfianum Hemsl. ex Prain	Unresolved		WCSP (in review)
Rhododendron stelligerum Sleumer	Unresolved		WCSP (in review)
Rhododendron stenaulum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron stenopetalum (Hogg) Mabb.	Unresolved		WCSP (in review)
Rhododendron stenophyllum Stapf	Unresolved		WCSP (in review)
Rhododendron stenophyllum Makino	Unresolved		WCSP (in review)
Rhododendron stenoplastum Balf. f. & Forrest	Synonym		TRO
Rhododendron stereophyllum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron stevensianum Sleumer	Unresolved		WCSP (in review)
Rhododendron stewartianum Diels	Accepted		TRO
Rhododendron stewartianum var. aiolosalpinx (Balf. f. & Farrer) Cowan & Davidian	Synonym		TRO
Rhododendron stewartianum var. tantulum Cowan & Davidian	Synonym		TRO
Rhododendron stictophyllum Balf. f.	Synonym		TRO
Rhododendron stolleanum Schltr.	Unresolved		WCSP (in review)
Rhododendron stonori Sleumer	Unresolved		WCSP (in review)
Rhododendron stresemannii J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron strigillosum Franch.	Accepted		TRO
Rhododendron strigillosum var. monosematum (Hutch.) T.L. Ming	Accepted		TRO
Rhododendron strigosum R.L. Liu	Accepted		TRO
Rhododendron suaveolens Sleumer	Unresolved		WCSP (in review)
Rhododendron subansiriense D.F.Chamb. & Cox	Unresolved		WCSP (in review)
Rhododendron subarcticum Harmaja	Synonym		TRO
Rhododendron subcerinum P.C. Tam	Accepted		TRO
Rhododendron subcordatum Becc.	Unresolved		WCSP (in review)
Rhododendron subcrenulatum Sleumer	Unresolved		WCSP (in review)
Rhododendron subenerve P.C. Tam	Accepted		TRO
Rhododendron subenerve var. nudistylum P.C. Tam	Synonym		TRO
Rhododendron suberosum Balf. f. & Forrest	Synonym		TRO
Rhododendron subestipitatum Chun ex P.C. Tam	Accepted		TRO
Rhododendron subflumineum P.C. Tam	Accepted		TRO
Rhododendron sublanceolatum Miq.	Unresolved		WCSP (in review)
Rhododendron subpacificum Sleumer	Unresolved		WCSP (in review)
Rhododendron subsessile Rendle	Unresolved		WCSP (in review)
Rhododendron subulatum (Nakai) Harmaja	Accepted		TRO
Rhododendron subuliferum Sleumer	Unresolved		WCSP (in review)
Rhododendron subulosum J.J.Sm. ex Sleumer	Unresolved		WCSP (in review)
Rhododendron succothii Davidian	Unresolved		WCSP (in review)
Rhododendron sugaui Argent	Unresolved		WCSP (in review)
Rhododendron sulfureum Franch.	Accepted		TRO
Rhododendron sumatranum Merr.	Unresolved		WCSP (in review)
Rhododendron superbum Sleumer	Unresolved		WCSP (in review)
Rhododendron supranubium Hutch.	Synonym		TRO
Rhododendron surasianum Balf.f. & Craib	Unresolved		WCSP (in review)
Rhododendron sutchuenense Franch.	Accepted		TRO
Rhododendron sycnanthum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron syncollum Balf. f. & Forrest	Synonym		TRO
Rhododendron syringoideum Sleumer	Unresolved		WCSP (in review)
Rhododendron taggianum Hutch.	Accepted		TRO
Rhododendron taibaiense Ching & H.P. Yang	Accepted		TRO
Rhododendron taichungianum S.S. Ying	Accepted		TRO
Rhododendron taipaoense T.C. Wu & P.C. Tam	Accepted		TRO
Rhododendron taishunense B.Y. Ding & Y.Y. Fang	Accepted		TRO
Rhododendron taitungalpinum S.S.Ying	Unresolved		WCSP (in review)
Rhododendron taiwanalpinum Ohwi	Accepted		TRO
Rhododendron taiwanianum S.S. Ying	Synonym		TRO
Rhododendron × takanashianum Sugim.	Unresolved		WCSP (in review)
Rhododendron takeuchii Argent	Unresolved		WCSP (in review)
Rhododendron taliense Franch.	Accepted		TRO
Rhododendron tamaense Davidian	Synonym		TRO
Rhododendron tamurae (Makino) Masam.	Unresolved		WCSP (in review)
Rhododendron tanakae Hayata	Synonym		TRO
Rhododendron tanastylum Balf. f. & Kingdon-Ward	Accepted		TRO
Rhododendron tanastylum var. lingzhiense M.Y. Fang	Accepted		TRO
Rhododendron tanastylum var. pennivenium (Balf. f. & Forrest) D.F. Chamb.	Synonym		TRO
Rhododendron tanastylum var. tanastylum	Accepted		TRO
Rhododendron tapeinum Balf.f. & Farrer	Unresolved		WCSP (in review)
Rhododendron tapelouense H. Lév.	Synonym		TRO
Rhododendron tapetiforme Balf. f. & Kingdon-Ward	Accepted		TRO
Rhododendron taquetii H.Lév.	Unresolved		WCSP (in review)
Rhododendron taronense Hutch.	Accepted		TRO
Rhododendron tashiroi Maxim.	Accepted		TRO
Rhododendron tatsienense Franch.	Accepted		TRO
Rhododendron tatsienense var. tatsienense	Accepted		TRO
Rhododendron tatuoi Nakai ex H.Hara	Unresolved		WCSP (in review)
Rhododendron tawadae (Ohwi) Ohwi	Unresolved		WCSP (in review)
Rhododendron tawangense K.C. Sahni & H.B. Naithani	Synonym		TRO
Rhododendron taxifolium Merr.	Unresolved		WCSP (in review)
Rhododendron taxoides J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron × taylorii H.J.Veitch	Unresolved		WCSP (in review)
Rhododendron × tebotan Komatsu	Unresolved		WCSP (in review)
Rhododendron tectum Koidz.	Unresolved		WCSP (in review)
Rhododendron telmateium Balf. f. & W.W. Sm.	Accepted		TRO
Rhododendron telopeum Balf. f. & Forrest	Synonym		TRO
Rhododendron temenium Balf. f. & Forrest	Accepted		TRO
Rhododendron temenium subsp. albipetalum Cowan	Synonym		TRO
Rhododendron temenium subsp. chrysanthemum Cowan	Synonym		TRO
Rhododendron temenium subsp. dealbatum Cowan	Synonym		TRO
Rhododendron temenium var. dealbatum (Cowan) D.F. Chamb.	Accepted		TRO
Rhododendron temenium subsp. gilvum Cowan	Synonym		TRO
Rhododendron temenium var. gilvum (Cowan) D.F. Chamb.	Accepted		TRO
Rhododendron temenium subsp. glaphyrum (Balf. f. & Forrest) Cowan	Synonym		TRO
Rhododendron temenium subsp. pothinum (Balf. f. & Forrest) Cowan	Synonym		TRO
Rhododendron temenium subsp. rhodanthum Cowan	Synonym		TRO
Rhododendron temenium var. temenium	Accepted		TRO
Rhododendron tenue Ching ex W.P. Fang & M.Y. He	Accepted		TRO
Rhododendron tenuifolium R.C. Fang & S.H. Huang	Accepted		TRO
Rhododendron tenuilaminare P.C. Tam	Accepted		TRO
Rhododendron tephropeplum Balf. f. & Forrest	Accepted		TRO
Rhododendron tetramerum (Makino) Nakai	Unresolved		WCSP (in review)
Rhododendron teysmannii Miq.	Unresolved		WCSP (in review)
Rhododendron thaumasianthum Sleumer	Unresolved		WCSP (in review)
Rhododendron thayerianum Rehder & E.H. Wilson	Accepted		TRO
Rhododendron theiochroum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron theiophyllum Balf. f. & Forrest	Synonym		TRO
Rhododendron thibaudiense Dombrain	Unresolved		WCSP (in review)
Rhododendron thomsonii Hook. f.	Accepted		TRO
Rhododendron thomsonii var. cyanocarpum Franch.	Synonym		TRO
Rhododendron thomsonii subsp. lopsangianum (Cowan) D.F. Chamb.	Accepted		TRO
Rhododendron thomsonii var. lopsangianum (Cowan) T.L. Ming	Synonym		TRO
Rhododendron thunbergii Planch.	Unresolved		WCSP (in review)
Rhododendron thymifolium Maxim.	Accepted		TRO
Rhododendron thyodocum Balf.f. & R.E.Cooper	Unresolved		WCSP (in review)
Rhododendron tianlinense P.C. Tam	Accepted		TRO
Rhododendron tianmenshanense C.L.Peng & L.H.Yan	Unresolved		WCSP (in review)
Rhododendron tiantangense G.Z. Li	Accepted		TRO
Rhododendron tigrinum Steud.	Unresolved		WCSP (in review)
Rhododendron timeteum Balf. f. & Forrest	Synonym		TRO
Rhododendron tingwuense P.C. Tam	Accepted		TRO
Rhododendron tintinnabellum Danet	Unresolved		WCSP (in review)
Rhododendron tolmachevii Harmaja	Unresolved		WCSP (in review)
Rhododendron tomentosum Harmaja	Synonym		TRO
Rhododendron tomentosum subsp. subarcticum (Harmaja) G.D. Wallace	Synonym		TRO
Rhododendron torquatum L.C. Hu	Synonym		TRO
Rhododendron torquatum Balf. f. & Farrer	Synonym		TRO
Rhododendron torquescens D.F. Chamb.	Accepted		TRO
Rhododendron torricellense Schltr.	Unresolved		WCSP (in review)
Rhododendron tosaense Makino	Unresolved		WCSP (in review)
Rhododendron toverenae F.Muell.	Unresolved		WCSP (in review)
Rhododendron toxopei J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron traillianum Forrest & W.W. Sm.	Accepted		TRO
Rhododendron traillianum var. dictyotum (Balf. f. ex Tagg) D.F. Chamb.	Accepted		TRO
Rhododendron traillianum var. traillianum	Accepted		TRO
Rhododendron transiens Nakai	Unresolved		WCSP (in review)
Rhododendron trichanthum Rehder	Accepted		TRO
Rhododendron trichocalyx Ingram	Unresolved		WCSP (in review)
Rhododendron trichocladum Franch.	Accepted		TRO
Rhododendron trichocladum var. longipilosum Cowan	Synonym		TRO
Rhododendron trichogynum L.C. Hu	Accepted		TRO
Rhododendron trichomiscum Balf. f. & Forrest	Synonym		TRO
Rhododendron trichophlebium Balf. f. & Forrest	Synonym		TRO
Rhododendron trichophorum Balf. f.	Accepted		TRO
Rhododendron trichopodum Balf. f. & Forrest	Synonym		TRO
Rhododendron trichostomum Franch.	Accepted		TRO
Rhododendron trichostomum var. ledoides (Balf. f. & W.W. Sm.) Cowan & Davidian	Accepted		TRO
Rhododendron trichostomum var. radinum (Balf. f. & W.W. Sm.) Cowan & Davidian	Accepted		TRO
Rhododendron trichostomum var. trichostomum	Accepted		TRO
Rhododendron × tricolor Sweet	Unresolved		WCSP (in review)
Rhododendron triflorum Hook. f.	Accepted		TRO
Rhododendron triflorum var. bauhiniiflorum (Watt ex Hutch.) Cullen in Cullen & D. F. Chamb.	Accepted		TRO
Rhododendron trilectorum Cowan	Accepted		TRO
Rhododendron trinerve Franch. ex H.Boissieu	Unresolved		WCSP (in review)
Rhododendron triplonaevium Balf. f. & Forrest	Synonym		TRO
Rhododendron tritifolium Balf. f. & Forrest	Synonym		TRO
Rhododendron triumphans Yersin & A.Chev.	Unresolved		WCSP (in review)
Rhododendron truncatovarium L.M. Gao & D.Z. Li	Accepted		TRO
Rhododendron truncatulum Balf. f. & Forrest	Synonym		TRO
Rhododendron truncicola Sleumer	Unresolved		WCSP (in review)
Rhododendron tsaii W.P. Fang	Accepted		TRO
Rhododendron tsangpoense Kingdon-Ward	Synonym		TRO
Rhododendron tsangpoense var. curvistylum Kingdon-Ward ex Cowan & Davidian	Synonym		TRO
Rhododendron tsangpoense var. pruniflorum (Hutch. & Kingdon-Ward) Cowan & Davidian	Synonym		TRO
Rhododendron tsariense Cowan	Accepted		TRO
Rhododendron tsarongense Balf. f. & Forrest	Synonym		TRO
Rhododendron tschonoskii Maxim.	Unresolved		WCSP (in review)
Rhododendron tsinlingense W.P. Fang ex J.Q. Fu	Accepted		TRO
Rhododendron tsoi Merr.	Accepted		TRO
Rhododendron tsurugisanense (T.Yamaz.) T.Yamaz.	Unresolved		WCSP (in review)
Rhododendron tsusiophyllum Sugim.	Unresolved		WCSP (in review)
Rhododendron tuba Sleumer	Unresolved		WCSP (in review)
Rhododendron tuberculiferum J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron tubiflorum DC.	Unresolved		WCSP (in review)
Rhododendron tubiflorum H.Low ex Lindl.	Unresolved		WCSP (in review)
Rhododendron tubiforme (Cowan & Davidian) Davidian	Accepted		TRO
Rhododendron tubulosum Ching ex W.Y. Wang	Accepted		TRO
Rhododendron tuhanensis Argent & T.J.Barkman	Unresolved		WCSP (in review)
Rhododendron tutcherae Hemsl. & E.H. Wilson	Accepted		TRO
Rhododendron uliginosum J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron ultimum Wernham	Unresolved		WCSP (in review)
Rhododendron umbelliferum H. Lév.	Synonym		TRO
Rhododendron unciferum P.C. Tam	Accepted		TRO
Rhododendron undulaticalyx J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron undulatum Steud.	Unresolved		WCSP (in review)
Rhododendron ungeonticum A.P.Khokhr. & Mazurenko	Unresolved		WCSP (in review)
Rhododendron ungernii Trautv. ex Regel	Unresolved		WCSP (in review)
Rhododendron ungernii Trautv.	Unresolved		WCSP (in review)
Rhododendron uniflorum Hutch. & Kingdon-Ward	Accepted		TRO
Rhododendron uniflorum var. imperator (Hutch. & Kingdon-Ward) Cullen	Accepted		TRO
Rhododendron urophyllum W.P. Fang	Accepted		TRO
Rhododendron uvariifolium Diels	Accepted		TRO
Rhododendron uvariifolium var. griseum Cowan	Synonym		TRO
Rhododendron vaccinioides Hook.	Accepted		TRO
Rhododendron valentinianum Forrest ex Hutch.	Accepted		TRO
Rhododendron valentinianum var. changii W.P. Fang	Synonym		TRO
Rhododendron vanderbiltianum Merr.	Unresolved		WCSP (in review)
Rhododendron vandeursenii Sleumer	Unresolved		WCSP (in review)
Rhododendron vanhoeffenii Abrom.	Unresolved		WCSP (in review)
Rhododendron vaniotii H. Lév.	Accepted		TRO
Rhododendron vanvuurenii J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron variolosum Becc.	Unresolved		WCSP (in review)
Rhododendron vaseyi A. Gray	Synonym		TRO
Rhododendron veitchianum Hook.	Unresolved		WCSP (in review)
Rhododendron vellereum Hutch. ex Tagg	Accepted		TRO
Rhododendron velutinum Becc.	Unresolved		WCSP (in review)
Rhododendron venator Tagg	Accepted		TRO
Rhododendron venosum Nutt.	Unresolved		WCSP (in review)
Rhododendron venustum Salisb.	Unresolved		WCSP (in review)
Rhododendron vernicosum Franch.	Accepted		TRO
Rhododendron verruciferum W.K. Hu	Accepted		TRO
Rhododendron verruculosum Rehder & E.H. Wilson	Accepted		TRO
Rhododendron versicolor Chun & W.P. Fang	Synonym		TRO
Rhododendron versteegii J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron verticillatum S.Vidal	Unresolved		WCSP (in review)
Rhododendron verticillatum H.Low ex Lindl.	Unresolved		WCSP (in review)
Rhododendron vesiculiferum Tagg	Accepted		TRO
Rhododendron vestitum Tagg & Forrest	Synonym		TRO
Rhododendron vialii Delavay & Franch.	Accepted		TRO
Rhododendron viburnifolium W.P. Fang	Synonym		TRO
Rhododendron vicarium Balf. f.	Synonym		TRO
Rhododendron vicinum Balf. f. & Forrest	Synonym		TRO
Rhododendron × victorianum Cuvelier	Unresolved		WCSP (in review)
Rhododendron villosulum J.J.Sm.	Unresolved		WCSP (in review)
Rhododendron villosum Hemsl. & E.H. Wilson	Synonym		TRO
Rhododendron vilmorinianum Balf. f.	Synonym		TRO
Rhododendron vinicolor Sleumer	Unresolved		WCSP (in review)
Rhododendron vinkii Sleumer	Unresolved		WCSP (in review)
Rhododendron violaceum Rehder & E.H. Wilson	Synonym		TRO
Rhododendron virgatum Hook. f.	Accepted		TRO
Rhododendron virgatum var. glabriflorum K.M. Feng ex R.C. Fang	Synonym		TRO
Rhododendron virgatum var. oleifolium Demoly	Synonym		TRO
Rhododendron virgatum subsp. oleifolium (Franch.) Cullen	Synonym		TRO
Rhododendron viridescens Hutch.	Accepted		TRO
Rhododendron viriosum Craven	Unresolved		WCSP (in review)
Rhododendron viscidifolium Davidian	Accepted		TRO
Rhododendron viscidum C.Z. Guo & Z.H. Liu	Accepted		TRO
Rhododendron viscigemmatum P.C. Tam	Accepted		TRO
Rhododendron viscistylum Nakai	Unresolved		WCSP (in review)
Rhododendron viscistylum var. hyugaense T.Yamaz.	Unresolved		WCSP (in review)
Rhododendron × viscosepalum Rehder	Unresolved		WCSP (in review)
Rhododendron viscosum (L.) Torr.	Accepted		TRO
Rhododendron viscosum var. aemulans Rehder	Unresolved		WCSP (in review)
Rhododendron viscosum var. montanum Rehder	Unresolved		WCSP (in review)
Rhododendron viscosum var. serrulatum (Small) H.E. Ahles	Accepted		TRO
Rhododendron vitis-idaea Sleumer	Unresolved		WCSP (in review)
Rhododendron vonroemeri Koord.	Unresolved		WCSP (in review)
Rhododendron wadanum Makino	Unresolved		WCSP (in review)
Rhododendron wallaceanum Millais	Unresolved		WCSP (in review)
Rhododendron wallichii Hook. f.	Accepted		TRO
Rhododendron walongense Kingdon-Ward	Accepted		TRO
Rhododendron wardii W.W. Sm.	Accepted		TRO
Rhododendron wardii var. puralbum (Balf. f. & W.W. Sm.) D.F. Chamb.	Accepted		TRO
Rhododendron wardii var. wardii	Accepted		TRO
Rhododendron warianum Schltr.	Unresolved		WCSP (in review)
Rhododendron warrenii J.F.Macbr.	Unresolved		WCSP (in review)
Rhododendron washingtonianum Millais	Unresolved		WCSP (in review)
Rhododendron × watereri E.H. Wilson	Unresolved		TRO
Rhododendron watsonii Hemsl. & E.H. Wilson	Accepted		TRO
Rhododendron wattii Cowan	Unresolved		WCSP (in review)
Rhododendron websterianum Rehder & E.H. Wilson	Accepted		TRO
Rhododendron weldianum Rehder & E.H. Wilson	Synonym		TRO
Rhododendron wentianum Koord.	Unresolved		WCSP (in review)
Rhododendron westlandii Hemsl.	Accepted		TRO
Rhododendron weyrichii Maxim.	Accepted		TRO
Rhododendron whiteheadii Rendle	Unresolved		WCSP (in review)
Rhododendron wightii Hook. f.	Accepted		TRO
Rhododendron wilhelminae Hochr.	Unresolved		WCSP (in review)
Rhododendron wilkiei Argent	Unresolved		WCSP (in review)
Rhododendron williamsianum Rehder & E.H. Wilson	Accepted		TRO
Rhododendron williamsii Merr. ex H.F.Copel.	Unresolved		WCSP (in review)
Rhododendron willmottiae auct.	Unresolved		WCSP (in review)
Rhododendron wilsoniae Hemsl. & E.H. Wilson	Synonym		TRO
Rhododendron wilsoniae var. ionanthum W.P. Fang	Synonym		TRO
Rhododendron wiltonii Hemsl. & E.H. Wilson	Accepted		TRO
Rhododendron windsorii Nutt.	Synonym		TRO
Rhododendron wollastonii Wernham	Unresolved		WCSP (in review)
Rhododendron wolongense W.K. Hu	Accepted		TRO
Rhododendron womersleyi Sleumer	Unresolved		WCSP (in review)
Rhododendron wongii Hemsl. & E.H. Wilson	Accepted		TRO
Rhododendron wrayi King & Gamble	Unresolved		WCSP (in review)
Rhododendron wrightianum Koord.	Unresolved		WCSP (in review)
Rhododendron wuense Balf. f.	Synonym		TRO
Rhododendron wumingense W.P. Fang	Accepted		TRO
Rhododendron wuyishanicum L.K.Ling	Unresolved		WCSP (in review)
Rhododendron xanthanthum (Tagg & Forrest) D.F. Chamb.	Accepted		TRO
Rhododendron xanthinum Balf. f. & W.W. Sm.	Synonym		TRO
Rhododendron xanthocodon Hutch.	Accepted		TRO
Rhododendron xanthoneuron H. Lév.	Synonym		TRO
Rhododendron xanthopetalum Merr.	Unresolved		WCSP (in review)
Rhododendron xanthostephanum Merr.	Accepted		TRO
Rhododendron xiaoxidongense W.K. Hu	Accepted		TRO
Rhododendron xichangense Z.J. Zhao	Accepted		TRO
Rhododendron xiguense Ching & H.P. Yang	Accepted		TRO
Rhododendron xinganense G.Z. Li	Synonym		TRO
Rhododendron xiushanense W.P. Fang	Synonym		TRO
Rhododendron xizangense W.P. Fang & W.K. Hu	Synonym		TRO
Rhododendron yakuinsulare Masam.	Unresolved		WCSP (in review)
Rhododendron yakumontanum Masam.	Unresolved		WCSP (in review)
Rhododendron yakumontanum (T.Yamaz.) T.Yamaz.	Unresolved		WCSP (in review)
Rhododendron yakushimanum Nakai	Unresolved		WCSP (in review)
Rhododendron yangmingshanense P.C. Tam	Accepted		TRO
Rhododendron yanthinum Bureau & Franch.	Synonym		TRO
Rhododendron yanthinum var. lepidanthum Rehder & E.H. Wilson	Synonym		TRO
Rhododendron yaogangxianense Qi-xian Liu	Accepted		TRO
Rhododendron yaoshanense L.M. Gao & S.D. Zhang	Accepted		TRO
Rhododendron yaoshanicum W.P. Fang & M.Y. He	Accepted		TRO
Rhododendron yaragongense Balf. f.	Synonym		TRO
Rhododendron yedoense Maxim. ex Regel	Unresolved		WCSP (in review)
Rhododendron yelliottii Warb.	Unresolved		WCSP (in review)
Rhododendron yizhangense Qi-xian Liu	Accepted		TRO
Rhododendron yongii Argent	Unresolved		WCSP (in review)
Rhododendron youngiae W.P. Fang	Synonym		TRO
Rhododendron yuefengense G.Z. Li	Accepted		TRO
Rhododendron yulingense W.P. Fang	Synonym		TRO
Rhododendron yungchangense Cullen	Accepted		TRO
Rhododendron yungningense Balf. f. ex Hutch.	Accepted		TRO
Rhododendron yunnanense Franch.	Accepted		TRO
Rhododendron yunyianum X.F. Jin & B.Y. Ding	Unresolved		TRO
Rhododendron yushuense Z.J. Zhao	Accepted		TRO
Rhododendron zaleucum Balf. f. & W.W. Sm.	Accepted		TRO
Rhododendron zaleucum var. zaleucum	Accepted		TRO
Rhododendron zekoense Y.D. Sun & Z.J. Zhao	Accepted		TRO
Rhododendron zeylanicum Loudon	Unresolved		WCSP (in review)
Rhododendron zeylanicum Booth	Unresolved		WCSP (in review)
Rhododendron zhangjiajieense C.L. Peng & L.H. Yan	Accepted		TRO
Rhododendron zheguense Ching & H.P. Yang	Accepted		TRO
Rhododendron zhongdianense L.C. Hu	Accepted		TRO
Rhododendron ziyuanense P.C. Tam	Accepted		TRO
Rhododendron ziyuanense var. pachyphyllum (W.P. Fang) G.Z. Li	Synonym		TRO
Rhododendron zoelleri Warb.	Unresolved		WCSP (in review)
Rhododendron zollingeri J.J.Sm.	Unresolved		WCSP (in review)