Every accepted species in the genus is listed. A name links to its page when we hold at least three commercially licensed photographs of it. Where we do not, the row shows how many we actually found, which is usually none.
| Species | Authority | Usable photographs | Page |
|---|---|---|---|
| Rhododendron groenlandicum | (Oeder) Kron & Judd | 1,638 | documented |
| Rhododendron maximum | L. | 937 | documented |
| Rhododendron tomentosum | Harmaja | 852 | documented |
| Rhododendron menziesii | Craven | 629 | documented |
| Rhododendron macrophyllum | D.Don ex G.Don | 623 | documented |
| Rhododendron periclymenoides | (Michx.) Shinners | 616 | documented |
| Rhododendron viscosum | (L.) Torr. | 472 | documented |
| Rhododendron albiflorum | Hook. | 462 | documented |
| Rhododendron ferrugineum | L. | 451 | documented |
| Rhododendron canescens | (Michx.) Sweet | 447 | documented |
| Rhododendron canadense | (L.) Torr. | 433 | documented |
| Rhododendron occidentale | (Torr. & A.Gray) A.Gray | 335 | documented |
| Rhododendron ponticum | L. | 300 | documented |
| Rhododendron columbianum | (Piper) Harmaja | 288 | documented |
| Rhododendron hirsutum | L. | 223 | documented |
| Rhododendron pseudochrysanthum | Hayata | 218 | documented |
| Rhododendron calendulaceum | (Michx.) Torr. | 175 | documented |
| Rhododendron dauricum | L. | 173 | documented |
| Rhododendron prinophyllum | (Small) Millais | 170 | documented |
| Rhododendron lapponicum | (L.) Wahlenb. | 158 | documented |
| Rhododendron luteum | Sweet | 149 | documented |
| Rhododendron catawbiense | Michx. | 134 | documented |
| Rhododendron caucasicum | Pall. | 114 | documented |
| Rhododendron oldhamii | Maxim. | 89 | documented |
| Rhododendron arboreum | Sm. | 69 | documented |
| Rhododendron pilosum | (Michx. ex Lamb) Craven | 66 | documented |
| Rhododendron latoucheae | Franch. | 65 | documented |
| Rhododendron rubropilosum | Hayata | 63 | documented |
| Rhododendron minus | Michx. | 61 | documented |
| Rhododendron mucronulatum | Turcz. | 59 | documented |
| Rhododendron hyperythrum | Hayata | 51 | documented |
| Rhododendron camtschaticum | Pall. | 41 | documented |
| Rhododendron formosanum | Hemsl. | 35 | documented |
| Rhododendron aureum | Georgi | 33 | documented |
| Rhododendron kaempferi | Planch. | 33 | documented |
| Rhododendron kawakamii | Hayata | 32 | documented |
| Rhododendron simsii | Planch. | 28 | documented |
| Rhododendron atlanticum | (Ashe) Rehder | 26 | documented |
| Rhododendron vaseyi | A.Gray | 25 | documented |
| Rhododendron noriakianum | T.Suzuki | 22 | documented |
| Rhododendron smokianum | Ralf Bauer & Albach | 21 | documented |
| Rhododendron breviperulatum | Hayata | 20 | documented |
| Rhododendron kotschyi | Simonk. | 20 | documented |
| Rhododendron austrinum | (Small) Rehder | 19 | documented |
| Rhododendron setosum | D.Don | 17 | documented |
| Rhododendron wadanum | Makino | 15 | documented |
| Rhododendron farrerae | Tate ex Sweet | 14 | documented |
| Rhododendron stenopetalum | (R.Hogg) Mabb. | 14 | documented |
| Rhododendron cinnabarinum | Hook.f. | 13 | documented |
| Rhododendron quinquefolium | Bisset & S.Moore | 13 | documented |
| Rhododendron arborescens | (Pursh) Torr. | 12 | documented |
| Rhododendron mariesii | Hemsl. & E.H.Wilson | 12 | documented |
| Rhododendron cumberlandense | E.L.Braun | 11 | documented |
| Rhododendron lepidotum | Wall. ex G.Don | 11 | documented |
| Rhododendron alabamense | Rehder | 10 | documented |
| Rhododendron campylocarpum | Hook.f. | 10 | documented |
| Rhododendron delavayi | Franch. | 10 | documented |
| Rhododendron falconeri | Hook.f. | 10 | documented |
| Rhododendron griffithianum | Wight | 10 | documented |
| Rhododendron tashiroi | Maxim. | 10 | documented |
| Rhododendron ovatum | (Lindl.) Maxim. ex Planch. | 9 | documented |
| Rhododendron sichotense | Pojark. | 9 | documented |
| Rhododendron simiarum | Hance | 9 | documented |
| Rhododendron crassifolium | Stapf | 8 | documented |
| Rhododendron veitchianum | Hook. | 8 | documented |
| Rhododendron beyerinckianum | Koord. | 7 | documented |
| Rhododendron chapmanii | (Alph.Wood) A.Gray | 7 | documented |
| Rhododendron fulgens | Hook.f. | 7 | documented |
| Rhododendron kesangiae | D.G.Long & Rushforth | 7 | documented |
| Rhododendron schlippenbachii | Maxim. | 7 | documented |
| Rhododendron wightii | Hook.f. | 7 | documented |
| Rhododendron aeruginosum | Hook.f. | 6 | documented |
| Rhododendron anthopogon | D.Don | 6 | documented |
| Rhododendron chilanshanense | Kurash. | 6 | documented |
| Rhododendron ericoides | H.Low ex Hook.f. | 6 | documented |
| Rhododendron keysii | Nutt. | 6 | documented |
| Rhododendron kiyosumense | (Makino) Makino | 6 | documented |
| Rhododendron maddenii | Hook.f. | 6 | documented |
| Rhododendron moulmainense | Hook. | 6 | documented |
| Rhododendron thomsonii | Hook.f. | 6 | documented |
| Rhododendron ungernii | Trautv. ex Regel | 6 | documented |
| Rhododendron adamsii | Rehder | 5 | documented |
| Rhododendron bloembergenii | Sleumer | 5 | documented |
| Rhododendron championiae | Hook. | 5 | documented |
| Rhododendron hongkongense | Hutch. | 5 | documented |
| Rhododendron japonoheptamerum | Kitam. | 5 | documented |
| Rhododendron molle | (Blume) G.Don | 5 | documented |
| Rhododendron rhuyuenense | Chun ex P.C.Tam | 5 | documented |
| Rhododendron tolmachevii | Harmaja | 5 | documented |
| Rhododendron triflorum | Hook.f. | 5 | documented |
| Rhododendron barbatum | Wall. ex G.Don | 4 | documented |
| Rhododendron campanulatum | D.Don | 4 | documented |
| Rhododendron indicum | (L.) Sweet | 4 | documented |
| Rhododendron nivale | Hook.f. | 4 | documented |
| Rhododendron pentaphyllum | Maxim. | 4 | documented |
| Rhododendron torajaense | Craven | 4 | documented |
| Rhododendron dilatatum | Miq. | 3 | documented |
| Rhododendron edgeworthii | Hook.f. | 3 | documented |
| Rhododendron malayanum | Jack | 3 | documented |
| Rhododendron micranthum | Turcz. | 3 | documented |
| Rhododendron tschonoskii | Maxim. | 3 | documented |
| Rhododendron javanicum | (Blume) Benn. | 3 | below the evidence gate |
| Rhododendron brachycarpum | D.Don ex G.Don | 2 | below the evidence gate |
| Rhododendron lindleyi | T.Moore | 2 | below the evidence gate |
| Rhododendron nakaharae | Hayata | 2 | below the evidence gate |
| Rhododendron pentandrum | (Maxim.) Craven | 2 | below the evidence gate |
| Rhododendron dalhousieae | Hook.f. | 1 | below the evidence gate |
| Rhododendron fallacinum | Sleumer | 1 | below the evidence gate |
| Rhododendron lochiae | F.Muell. | 1 | below the evidence gate |
| Rhododendron longiperulatum | Hayata | 1 | below the evidence gate |
| Rhododendron lowii | Hook.f. | 1 | below the evidence gate |
| Rhododendron retivenium | Sleumer | 1 | below the evidence gate |
| Rhododendron suaveolens | Sleumer | 1 | below the evidence gate |
| Rhododendron wallichii | Hook.f. | 1 | below the evidence gate |
| Rhododendron yedoense | Regel ex Maxim. | 1 | below the evidence gate |
| Rhododendron × abhayae | L.K.Rai | 0 | below the evidence gate |
| Rhododendron × agastum | Balf.f. & W.W.Sm. | 0 | below the evidence gate |
| Rhododendron × albescens | W.Bull | 0 | below the evidence gate |
| Rhododendron × albicans | Waterer ex Zabel | 0 | below the evidence gate |
| Rhododendron × alstroemerioides | Lem. | 0 | below the evidence gate |
| Rhododendron × altaclerense | Lindl. | 0 | below the evidence gate |
| Rhododendron × amoenum | Planch. | 0 | below the evidence gate |
| Rhododendron × anneliesae | Rehder | 0 | below the evidence gate |
| Rhododendron × apradae | U.Rai & Lama | 0 | below the evidence gate |
| Rhododendron × arbutifolium | Rehder | 0 | below the evidence gate |
| Rhododendron × ashitakayamense | Sugim. | 0 | below the evidence gate |
| Rhododendron × bakeri | (W.P.Lemmon & McKay) H.H.Hume | 0 | below the evidence gate |
| Rhododendron × bathyphyllum | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron × bungonishikii | Komatsu | 0 | below the evidence gate |
| Rhododendron × burjaticum | Malyschev | 0 | below the evidence gate |
| Rhododendron × candelabrum | Hook.f. | 0 | below the evidence gate |
| Rhododendron × cartonianum | DC. | 0 | below the evidence gate |
| Rhododendron × cavronii | André | 0 | below the evidence gate |
| Rhododendron × chamaezelum | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron × charadzeae | A.P.Khokhr. & Mazurenko | 0 | below the evidence gate |
| Rhododendron × chlorops | Cowan | 0 | below the evidence gate |
| Rhododendron × chukirishima | T.Yamaz | 0 | below the evidence gate |
| Rhododendron × cilipinense | S.Bowler | 0 | below the evidence gate |
| Rhododendron × coriifolium | Sleumer | 0 | below the evidence gate |
| Rhododendron × davisianum | R.I.Milne | 0 | below the evidence gate |
| Rhododendron × decipiens | Lacaita | 0 | below the evidence gate |
| Rhododendron × detonsum | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron × dimidiatum | Balf.f. | 0 | below the evidence gate |
| Rhododendron × diversiflorum | Danet | 0 | below the evidence gate |
| Rhododendron × edgarianum | Rehder & E.H.Wilson | 0 | below the evidence gate |
| Rhododendron × enneandrum | DC. | 0 | below the evidence gate |
| Rhododendron × enomotoi | T.Yamaz | 0 | below the evidence gate |
| Rhododendron × epilosum | (J.J.Sm.) Argent | 0 | below the evidence gate |
| Rhododendron × erythrocalyx | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron × filidactylis | R.I.Milne | 0 | below the evidence gate |
| Rhododendron × fittianum | Balf.f. | 0 | below the evidence gate |
| Rhododendron × fuchsii | Sleumer | 0 | below the evidence gate |
| Rhododendron × fulvastrum | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron × gandavense | (K.Koch) Rehder | 0 | below the evidence gate |
| Rhododendron × geraldii | (Hutch.) Ivens | 0 | below the evidence gate |
| Rhododendron × gilliardii | Sleumer | 0 | below the evidence gate |
| Rhododendron × hasegawae | S.Watan. | 0 | below the evidence gate |
| Rhododendron × hemigymnum | (Tagg & Forrest) D.F.Chamb. | 0 | below the evidence gate |
| Rhododendron × hidaense | Makino ex H.Hara | 0 | below the evidence gate |
| Rhododendron × hillieri | Davidian | 0 | below the evidence gate |
| Rhododendron × hunsteinii | Argent | 0 | below the evidence gate |
| Rhododendron × hybridum | Ker Gawler | 0 | below the evidence gate |
| Rhododendron × inopinum | Balf.f. ex Tagg | 0 | below the evidence gate |
| Rhododendron × intermedium | Tausch | 0 | below the evidence gate |
| Rhododendron × kamatae | (Mochizuki) Craven | 0 | below the evidence gate |
| Rhododendron × kawir | Danet | 0 | below the evidence gate |
| Rhododendron × keditii | Sleumer | 0 | below the evidence gate |
| Rhododendron × kesselringii | E.L.Wolf | 0 | below the evidence gate |
| Rhododendron × kewense | W.Watson | 0 | below the evidence gate |
| Rhododendron × kisoanum | Okuhara ex T.Shimizu | 0 | below the evidence gate |
| Rhododendron × komatsui | T.Yamaz | 0 | below the evidence gate |
| Rhododendron × koudzumontanum | Hid.Takah. & Katsuy. | 0 | below the evidence gate |
| Rhododendron × kuratanum | S.Watan. | 0 | below the evidence gate |
| Rhododendron × kurohimense | Arakawa | 0 | below the evidence gate |
| Rhododendron × liewianum | Argent, A.Lamb & Phillipps | 0 | below the evidence gate |
| Rhododendron × lochmium | Balf.f. | 0 | below the evidence gate |
| Rhododendron × lysolepis | Hutch. | 0 | below the evidence gate |
| Rhododendron × magorianum | Millais | 0 | below the evidence gate |
| Rhododendron × mizumotoi | S.Watan. | 0 | below the evidence gate |
| Rhododendron × nebulicola | Danet | 0 | below the evidence gate |
| Rhododendron × niko-montanum | Nakai | 0 | below the evidence gate |
| Rhododendron × ootrichum | Sleumer | 0 | below the evidence gate |
| Rhododendron × pallescens | Hutch. | 0 | below the evidence gate |
| Rhododendron × palustriforme | (A.P.Khokhr. & Mazurenko) Barkalov | 0 | below the evidence gate |
| Rhododendron × paradoxum | Balf.f. | 0 | below the evidence gate |
| Rhododendron × pennsylvanicum | (B.E.Harkn.) Rehder | 0 | below the evidence gate |
| Rhododendron × peregrinum | Tagg | 0 | below the evidence gate |
| Rhododendron × planecostatum | Sleumer | 0 | below the evidence gate |
| Rhododendron × planetum | Balf.f. | 0 | below the evidence gate |
| Rhododendron × psammogenes | Sleumer | 0 | below the evidence gate |
| Rhododendron × pulchrum | Sweet | 0 | below the evidence gate |
| Rhododendron × pyrrhoanthum | Balf.f. | 0 | below the evidence gate |
| Rhododendron × rovellii | Leroy | 0 | below the evidence gate |
| Rhododendron × russelianum | Sweet | 0 | below the evidence gate |
| Rhododendron × sarcodes | Argent & Madulid | 0 | below the evidence gate |
| Rhododendron × schoddei | Sleumer | 0 | below the evidence gate |
| Rhododendron × sheilae | Sleumer | 0 | below the evidence gate |
| Rhododendron × silvicola | (Sleumer) Argent, A.L.Lamb, Phillipps & Collen. | 0 | below the evidence gate |
| Rhododendron × sinosimulans | D.F.Chamb. | 0 | below the evidence gate |
| Rhododendron × smithii | Sweet | 0 | below the evidence gate |
| Rhododendron × sochadzeae | Kharadze & Davlian. | 0 | below the evidence gate |
| Rhododendron × sundarraianum | Sherpa & Gogoi | 0 | below the evidence gate |
| Rhododendron × takanashianum | Sugim. | 0 | below the evidence gate |
| Rhododendron × tatuoi | Nakai ex H.Hara | 0 | below the evidence gate |
| Rhododendron × transiens | Nakai | 0 | below the evidence gate |
| Rhododendron × trichophorum | Balf.f. | 0 | below the evidence gate |
| Rhododendron × tricolor | Sweet | 0 | below the evidence gate |
| Rhododendron × vanhoeffenii | Abrom. | 0 | below the evidence gate |
| Rhododendron × variolosum | Becc. | 0 | below the evidence gate |
| Rhododendron × verruculosum | Rehder & E.H.Wilson | 0 | below the evidence gate |
| Rhododendron × victorianum | (Cuvelier) Cuvelier | 0 | below the evidence gate |
| Rhododendron × wilhelminae | Hochr. | 0 | below the evidence gate |
| Rhododendron × xanthanthum | (Balf.f. & Forrest) D.F.Chamb. | 0 | below the evidence gate |
| Rhododendron aberconwayi | Cowan | 0 | below the evidence gate |
| Rhododendron abietifolium | Sleumer | 0 | below the evidence gate |
| Rhododendron acrophilum | Merr. & Quisumb. | 0 | below the evidence gate |
| Rhododendron acuminatum | Hook.f. | 0 | below the evidence gate |
| Rhododendron adenanthum | M.Y.He | 0 | below the evidence gate |
| Rhododendron adenobracteum | X.F.Gao & Y.L.Peng | 0 | below the evidence gate |
| Rhododendron adenogynum | Diels | 0 | below the evidence gate |
| Rhododendron adenopodum | Franch. | 0 | below the evidence gate |
| Rhododendron adenosum | (Cowan & Davidian) Davidian | 0 | below the evidence gate |
| Rhododendron adinophyllum | Merr. | 0 | below the evidence gate |
| Rhododendron aequabile | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron afghanicum | Aitch. & Hemsl. | 0 | below the evidence gate |
| Rhododendron aganniphum | Balf.f. & Kingdon-Ward | 0 | below the evidence gate |
| Rhododendron agathodaemonis | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron albertsenianum | Forrest | 0 | below the evidence gate |
| Rhododendron alborugosum | Argent & J.Dransf. | 0 | below the evidence gate |
| Rhododendron albrechtii | Maxim. | 0 | below the evidence gate |
| Rhododendron album | Blume | 0 | below the evidence gate |
| Rhododendron alternans | Sleumer | 0 | below the evidence gate |
| Rhododendron alticola | Sleumer | 0 | below the evidence gate |
| Rhododendron alutaceum | Balf.f. & W.W.Sm. | 0 | below the evidence gate |
| Rhododendron amagianum | (Makino) Makino ex H.Hara | 0 | below the evidence gate |
| Rhododendron amakusaense | (T.Yamaz) T.Yamaz | 0 | below the evidence gate |
| Rhododendron amandum | Cowan | 0 | below the evidence gate |
| Rhododendron ambiguum | Hemsl. | 0 | below the evidence gate |
| Rhododendron amesiae | Rehder & E.H.Wilson | 0 | below the evidence gate |
| Rhododendron amundsenianum | Hand.-Mazz. | 0 | below the evidence gate |
| Rhododendron anagalliflorum | Wernham | 0 | below the evidence gate |
| Rhododendron andrineae | Danet | 0 | below the evidence gate |
| Rhododendron angiense | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron angulatum | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron annae | Franch. | 0 | below the evidence gate |
| Rhododendron anthopogonoides | Maxim. | 0 | below the evidence gate |
| Rhododendron anthosphaerum | Diels | 0 | below the evidence gate |
| Rhododendron anwheiense | E.H.Wilson | 0 | below the evidence gate |
| Rhododendron aperantum | Balf.f. & Kingdon-Ward | 0 | below the evidence gate |
| Rhododendron apiense | Argent | 0 | below the evidence gate |
| Rhododendron apoanum | Stein | 0 | below the evidence gate |
| Rhododendron araiophyllum | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron archboldianum | Sleumer | 0 | below the evidence gate |
| Rhododendron ardii | Hutabarat, Mambrasar & Mustaqim | 0 | below the evidence gate |
| Rhododendron arenicola | Sleumer | 0 | below the evidence gate |
| Rhododendron arfakianum | Becc. | 0 | below the evidence gate |
| Rhododendron argipeplum | Balf.f. & R.E.Cooper | 0 | below the evidence gate |
| Rhododendron argyrophyllum | Franch. | 0 | below the evidence gate |
| Rhododendron arizelum | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron armitii | F.M.Bailey | 0 | below the evidence gate |
| Rhododendron arunachalense | D.F.Chamb. & S.J.Rae | 0 | below the evidence gate |
| Rhododendron asperrimum | Sleumer | 0 | below the evidence gate |
| Rhododendron asperulum | Hutch. & Kingdon-Ward | 0 | below the evidence gate |
| Rhododendron asperum | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron asterochnoum | Diels | 0 | below the evidence gate |
| Rhododendron astrophorum | M.N.Tamayo, Y.P.Ang & A.S.Rob. | 0 | below the evidence gate |
| Rhododendron atjehense | Sleumer | 0 | below the evidence gate |
| Rhododendron atrichum | Argent | 0 | below the evidence gate |
| Rhododendron atropunicum | H.P.Yang | 0 | below the evidence gate |
| Rhododendron atropurpureum | Sleumer | 0 | below the evidence gate |
| Rhododendron atrovirens | Franch. | 0 | below the evidence gate |
| Rhododendron augustinii | Hemsl. | 0 | below the evidence gate |
| Rhododendron aureodorsale | (W.P.Fang ex J.Q.Fu) Y.P.Ma & J.Nielsen | 0 | below the evidence gate |
| Rhododendron auriculatum | Hemsl. | 0 | below the evidence gate |
| Rhododendron aurigeranum | Sleumer | 0 | below the evidence gate |
| Rhododendron auritum | Tagg | 0 | below the evidence gate |
| Rhododendron awatosaense | Minamit. & Yonek. | 0 | below the evidence gate |
| Rhododendron bachii | H.Lév. | 0 | below the evidence gate |
| Rhododendron baconii | Argent, A.Lamb & Phillipps | 0 | below the evidence gate |
| Rhododendron baenitzianum | Lauterb. | 0 | below the evidence gate |
| Rhododendron bagobonum | H.F.Copel. | 0 | below the evidence gate |
| Rhododendron baihuaense | Y.P.Ma | 0 | below the evidence gate |
| Rhododendron baileyi | Balf.f. | 0 | below the evidence gate |
| Rhododendron bailiense | Y.P.Ma, Zhang & D.F.Chamb. | 0 | below the evidence gate |
| Rhododendron bainaense | Xiang Chen & C.H.Yang | 0 | below the evidence gate |
| Rhododendron bainbridgeanum | Tagg & Forrest | 0 | below the evidence gate |
| Rhododendron balangense | W.P.Fang | 0 | below the evidence gate |
| Rhododendron balfourianum | Diels | 0 | below the evidence gate |
| Rhododendron bamaense | Z.J.Zhao | 0 | below the evidence gate |
| Rhododendron banghamiorum | (J.J.Sm.) Sleumer | 0 | below the evidence gate |
| Rhododendron barkamense | D.F.Chamb. | 0 | below the evidence gate |
| Rhododendron basilicum | Balf.f. & W.W.Sm. | 0 | below the evidence gate |
| Rhododendron beanianum | Cowan | 0 | below the evidence gate |
| Rhododendron beccarii | Sleumer | 0 | below the evidence gate |
| Rhododendron beesianum | Diels | 0 | below the evidence gate |
| Rhododendron bellissimum | D.F.Chamb. | 0 | below the evidence gate |
| Rhododendron benhallii | Craven | 0 | below the evidence gate |
| Rhododendron benomense | Rafidah & A.C.Elliott | 0 | below the evidence gate |
| Rhododendron bhutanense | D.G.Long & S.Bowes-Lyon | 0 | below the evidence gate |
| Rhododendron bicorniculatum | P.C.Tam | 0 | below the evidence gate |
| Rhododendron bijiangense | T.L.Ming | 0 | below the evidence gate |
| Rhododendron bivelatum | Balf.f. | 0 | below the evidence gate |
| Rhododendron blackii | Sleumer | 0 | below the evidence gate |
| Rhododendron boninense | Nakai | 0 | below the evidence gate |
| Rhododendron bonvalotii | Bureau & Franch. | 0 | below the evidence gate |
| Rhododendron boothii | Nutt. | 0 | below the evidence gate |
| Rhododendron borneense | (J.J.Sm.) Argent, A.Lamb & Phillipps | 0 | below the evidence gate |
| Rhododendron brachyanthum | Franch. | 0 | below the evidence gate |
| Rhododendron brachygynum | H.F.Copel. | 0 | below the evidence gate |
| Rhododendron brachypodarium | Sleumer | 0 | below the evidence gate |
| Rhododendron brachypodum | W.P.Fang & P.S.Liu | 0 | below the evidence gate |
| Rhododendron bracteatum | Rehder & E.H.Wilson | 0 | below the evidence gate |
| Rhododendron brassii | Sleumer | 0 | below the evidence gate |
| Rhododendron brentelii | Argent | 0 | below the evidence gate |
| Rhododendron brevicaudatum | R.C.Fang & S.S.Chang | 0 | below the evidence gate |
| Rhododendron brevinerve | Chun & W.P.Fang | 0 | below the evidence gate |
| Rhododendron brevipes | Sleumer | 0 | below the evidence gate |
| Rhododendron brevipetiolatum | M.Y.Fang | 0 | below the evidence gate |
| Rhododendron bryophilum | Sleumer | 0 | below the evidence gate |
| Rhododendron bullifolium | Sleumer | 0 | below the evidence gate |
| Rhododendron bulu | Hutch. | 0 | below the evidence gate |
| Rhododendron bureavii | Franch. | 0 | below the evidence gate |
| Rhododendron burmanicum | Hutch. | 0 | below the evidence gate |
| Rhododendron burttii | P.Woods | 0 | below the evidence gate |
| Rhododendron buruense | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron buxifolium | H.Low ex Hook.f. | 0 | below the evidence gate |
| Rhododendron buxoides | Sleumer | 0 | below the evidence gate |
| Rhododendron caesium | Hutch. | 0 | below the evidence gate |
| Rhododendron caespitosum | Sleumer | 0 | below the evidence gate |
| Rhododendron caliginis | Kores | 0 | below the evidence gate |
| Rhododendron callimorphum | Balf.f. & W.W.Sm. | 0 | below the evidence gate |
| Rhododendron calophytum | Franch. | 0 | below the evidence gate |
| Rhododendron calosanthes | Sleumer | 0 | below the evidence gate |
| Rhododendron calostrotum | Balf.f. & Kingdon-Ward | 0 | below the evidence gate |
| Rhododendron calvescens | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron camelliiflorum | Hook.f. | 0 | below the evidence gate |
| Rhododendron campylogynum | Franch. | 0 | below the evidence gate |
| Rhododendron capellae | Kores | 0 | below the evidence gate |
| Rhododendron capitatum | Maxim. | 0 | below the evidence gate |
| Rhododendron carneum | Hutch. | 0 | below the evidence gate |
| Rhododendron carrii | Sleumer | 0 | below the evidence gate |
| Rhododendron carringtoniae | F.Muell. | 0 | below the evidence gate |
| Rhododendron carstensense | Wernham | 0 | below the evidence gate |
| Rhododendron catacosmum | Balf.f. ex Tagg | 0 | below the evidence gate |
| Rhododendron cavaleriei | H.Lév. | 0 | below the evidence gate |
| Rhododendron celebicum | (Blume) DC. | 0 | below the evidence gate |
| Rhododendron cephalanthum | Franch. | 0 | below the evidence gate |
| Rhododendron cerasinum | Tagg ex Kingdon-Ward | 0 | below the evidence gate |
| Rhododendron cernuum | Sleumer | 0 | below the evidence gate |
| Rhododendron chamaethomsonii | (Tagg) Cowan & Davidian | 0 | below the evidence gate |
| Rhododendron chamahense | Rafidah | 0 | below the evidence gate |
| Rhododendron chamberlainii | Craven | 0 | below the evidence gate |
| Rhododendron changii | (Fang) W.P.Fang | 0 | below the evidence gate |
| Rhododendron chaoanense | D.C.Wu & P.C.Tam | 0 | below the evidence gate |
| Rhododendron charitopes | Balf.f. & Farrer | 0 | below the evidence gate |
| Rhododendron chevalieri | Dop | 0 | below the evidence gate |
| Rhododendron chihsinianum | Chun & W.P.Fang | 0 | below the evidence gate |
| Rhododendron chionanthum | Tagg & Forrest | 0 | below the evidence gate |
| Rhododendron christi | F.Först. | 0 | below the evidence gate |
| Rhododendron christianae | Sleumer | 0 | below the evidence gate |
| Rhododendron chrysocalyx | H.Lév. & Vaniot | 0 | below the evidence gate |
| Rhododendron chrysodoron | Tagg ex Hutch. | 0 | below the evidence gate |
| Rhododendron chrysolepis | Hutch. & Kingdon-Ward | 0 | below the evidence gate |
| Rhododendron chunienii | Chun & W.P.Fang | 0 | below the evidence gate |
| Rhododendron chunii | W.P.Fang | 0 | below the evidence gate |
| Rhododendron ciliatum | Hook.f. | 0 | below the evidence gate |
| Rhododendron ciliicalyx | Franch. | 0 | below the evidence gate |
| Rhododendron ciliilobum | Sleumer | 0 | below the evidence gate |
| Rhododendron ciliipes | Hutch. | 0 | below the evidence gate |
| Rhododendron cinchoniflorum | Sleumer | 0 | below the evidence gate |
| Rhododendron cinerascens | Sleumer | 0 | below the evidence gate |
| Rhododendron circinnatum | Cowan & Kingdon-Ward | 0 | below the evidence gate |
| Rhododendron citriniflorum | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron citrinum | (Hassk.) Hassk. | 0 | below the evidence gate |
| Rhododendron clementinae | Forrest ex W.W.Sm. | 0 | below the evidence gate |
| Rhododendron cochlearifolium | Xiang Chen & Jia Y.Huang | 0 | below the evidence gate |
| Rhododendron cockburnii | (Argent, A.Lamb & Phillipps) Craven | 0 | below the evidence gate |
| Rhododendron codonanthum | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron coelicum | Balf.f. & Farrer | 0 | below the evidence gate |
| Rhododendron coeloneurum | Diels | 0 | below the evidence gate |
| Rhododendron coelorum | Wernham | 0 | below the evidence gate |
| Rhododendron colemanii | R.F.Mill. | 0 | below the evidence gate |
| Rhododendron collettianum | Aitch. & Hemsl. | 0 | below the evidence gate |
| Rhododendron comisteum | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron commonae | F.Först. | 0 | below the evidence gate |
| Rhododendron commutatum | Sleumer | 0 | below the evidence gate |
| Rhododendron comparabile | Sleumer | 0 | below the evidence gate |
| Rhododendron complexum | Balf.f. & W.W.Sm. | 0 | below the evidence gate |
| Rhododendron comptum | C.H.Wright | 0 | below the evidence gate |
| Rhododendron concinnoides | Hutch. & Kingdon-Ward | 0 | below the evidence gate |
| Rhododendron concinnum | Hemsl. | 0 | below the evidence gate |
| Rhododendron coriaceum | Franch. | 0 | below the evidence gate |
| Rhododendron cornu-bovis | Sleumer | 0 | below the evidence gate |
| Rhododendron correoides | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron coryanum | Tagg & Forrest | 0 | below the evidence gate |
| Rhododendron cowanianum | Davidian | 0 | below the evidence gate |
| Rhododendron coxianum | Davidian | 0 | below the evidence gate |
| Rhododendron crassimedium | P.C.Tam | 0 | below the evidence gate |
| Rhododendron crassistylum | M.Y.He | 0 | below the evidence gate |
| Rhododendron cravenii | Danet | 0 | below the evidence gate |
| Rhododendron crenulatum | Hutch. ex Sleumer | 0 | below the evidence gate |
| Rhododendron cretaceum | P.C.Tam | 0 | below the evidence gate |
| Rhododendron crinigerum | Franch. | 0 | below the evidence gate |
| Rhododendron cruttwellii | Sleumer | 0 | below the evidence gate |
| Rhododendron cuffeanum | Craib ex Hutch. | 0 | below the evidence gate |
| Rhododendron culminicola | F.Muell. | 0 | below the evidence gate |
| Rhododendron cuneatum | W.W.Sm. | 0 | below the evidence gate |
| Rhododendron cuneifolium | Stapf | 0 | below the evidence gate |
| Rhododendron curviflorum | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron cuspidellum | Sleumer | 0 | below the evidence gate |
| Rhododendron cyanocarpum | (Franch.) Franch. ex W.W.Sm. | 0 | below the evidence gate |
| Rhododendron cyrtophyllum | Wernham | 0 | below the evidence gate |
| Rhododendron dachengense | G.Z.Li | 0 | below the evidence gate |
| Rhododendron danbaense | L.C.Hu | 0 | below the evidence gate |
| Rhododendron dasycladoides | Hand.-Mazz. | 0 | below the evidence gate |
| Rhododendron dasypetalum | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron datiandingense | Zhi J.Feng | 0 | below the evidence gate |
| Rhododendron davidii | Franch. | 0 | below the evidence gate |
| Rhododendron davidsonianum | Rehder & E.H.Wilson | 0 | below the evidence gate |
| Rhododendron dawuense | H.P.Yang | 0 | below the evidence gate |
| Rhododendron dayaoshanense | L.M.Gao & D.Z.Li | 0 | below the evidence gate |
| Rhododendron dayiense | M.Y.He | 0 | below the evidence gate |
| Rhododendron declivatum | Ching & C.H.Yang | 0 | below the evidence gate |
| Rhododendron decorum | Franch. | 0 | below the evidence gate |
| Rhododendron degronianum | Carrière | 0 | below the evidence gate |
| Rhododendron dekatanum | Cowan | 0 | below the evidence gate |
| Rhododendron delicatulum | Sleumer | 0 | below the evidence gate |
| Rhododendron dendricola | Hutch. | 0 | below the evidence gate |
| Rhododendron dendrocharis | Franch. | 0 | below the evidence gate |
| Rhododendron densifolium | K.M.Feng | 0 | below the evidence gate |
| Rhododendron denudatum | H.Lév. | 0 | below the evidence gate |
| Rhododendron detersile | Franch. | 0 | below the evidence gate |
| Rhododendron detznerianum | Sleumer | 0 | below the evidence gate |
| Rhododendron dianthosmum | Sleumer | 0 | below the evidence gate |
| Rhododendron dichroanthum | Diels | 0 | below the evidence gate |
| Rhododendron dielsianum | Schltr. | 0 | below the evidence gate |
| Rhododendron dignabile | Cowan | 0 | below the evidence gate |
| Rhododendron dimitrum | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron diphrocalyx | Balf.f. | 0 | below the evidence gate |
| Rhododendron discolor | Franch. | 0 | below the evidence gate |
| Rhododendron disterigmoides | Sleumer | 0 | below the evidence gate |
| Rhododendron diversipilosum | (Nakai) Harmaja | 0 | below the evidence gate |
| Rhododendron dumicola | Tagg & Forrest | 0 | below the evidence gate |
| Rhododendron durionifolium | Becc. | 0 | below the evidence gate |
| Rhododendron dutartrei | Danet | 0 | below the evidence gate |
| Rhododendron eastmanii | Kron & Creel | 0 | below the evidence gate |
| Rhododendron ebianense | M.Y.Fang | 0 | below the evidence gate |
| Rhododendron eclecteum | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron edanoi | Merr. & Quisumb. | 0 | below the evidence gate |
| Rhododendron eheinense | M.Y.He & Z.J.Zhao | 0 | below the evidence gate |
| Rhododendron elegantulum | Tagg & Forrest | 0 | below the evidence gate |
| Rhododendron elliottii | Brandis ex Lace & W.W.Sm. | 0 | below the evidence gate |
| Rhododendron emarginatum | Hemsl. & E.H.Wilson | 0 | below the evidence gate |
| Rhododendron engelbertii | Mambrasar | 0 | below the evidence gate |
| Rhododendron englerianum | Koord. | 0 | below the evidence gate |
| Rhododendron erastum | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron eriobotryoides | Xiang Chen & Jia Y.Huang | 0 | below the evidence gate |
| Rhododendron eriocarpum | (Hayata) Nakai | 0 | below the evidence gate |
| Rhododendron erosipetalum | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron erosum | Cowan | 0 | below the evidence gate |
| Rhododendron esetulosum | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron euchroum | Balf.f. & Kingdon-Ward | 0 | below the evidence gate |
| Rhododendron eudoxum | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron eurysiphon | Tagg & Forrest | 0 | below the evidence gate |
| Rhododendron evelyneae | Danet | 0 | below the evidence gate |
| Rhododendron exasperatum | Tagg | 0 | below the evidence gate |
| Rhododendron excellens | Hemsl. & E.H.Wilson | 0 | below the evidence gate |
| Rhododendron excelsum | A.Chev. | 0 | below the evidence gate |
| Rhododendron extrorsum | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron exuberans | (Sleumer) Argent | 0 | below the evidence gate |
| Rhododendron eymae | Sleumer | 0 | below the evidence gate |
| Rhododendron faberi | Hemsl. | 0 | below the evidence gate |
| Rhododendron facetum | Balf.f. & Kingdon-Ward | 0 | below the evidence gate |
| Rhododendron faithiae | Chun | 0 | below the evidence gate |
| Rhododendron fangchengense | P.C.Tam | 0 | below the evidence gate |
| Rhododendron farinosum | H.Lév. | 0 | below the evidence gate |
| Rhododendron fastigiatum | Franch. | 0 | below the evidence gate |
| Rhododendron faucium | D.F.Chamb. | 0 | below the evidence gate |
| Rhododendron feddei | H.Lév. | 0 | below the evidence gate |
| Rhododendron fictolacteum | Balf.f. | 0 | below the evidence gate |
| Rhododendron flammeum | (Michx.) Sarg. | 0 | below the evidence gate |
| Rhododendron flavantherum | Hutch. & Kingdon-Ward | 0 | below the evidence gate |
| Rhododendron flavidum | Franch. | 0 | below the evidence gate |
| Rhododendron flavoflorum | T.L.Ming | 0 | below the evidence gate |
| Rhododendron flavoviride | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron fletcherianum | Davidian | 0 | below the evidence gate |
| Rhododendron fleuryi | Dop ex A.Chev. | 0 | below the evidence gate |
| Rhododendron floccigerum | Franch. | 0 | below the evidence gate |
| Rhododendron floribundum | Franch. | 0 | below the evidence gate |
| Rhododendron flosculum | W.P.Fang & G.Z.Li | 0 | below the evidence gate |
| Rhododendron flumineum | W.P.Fang & M.Y.He | 0 | below the evidence gate |
| Rhododendron formosum | Wall. | 0 | below the evidence gate |
| Rhododendron forrestii | Balf.f. ex Diels | 0 | below the evidence gate |
| Rhododendron fortunans | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron fortunei | Lindl. | 0 | below the evidence gate |
| Rhododendron fragariiflorum | Kingdon-Ward | 0 | below the evidence gate |
| Rhododendron frey-wysslingii | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron fuchsiifolium | H.Lév. | 0 | below the evidence gate |
| Rhododendron fulvum | Balf.f. & W.W.Sm. | 0 | below the evidence gate |
| Rhododendron fuscipilum | M.Y.He | 0 | below the evidence gate |
| Rhododendron fuyuanense | Z.H.Yang | 0 | below the evidence gate |
| Rhododendron galactinum | Balf.f. ex Tagg | 0 | below the evidence gate |
| Rhododendron gannanense | Z.C.Feng & X.G.Sun | 0 | below the evidence gate |
| Rhododendron gardenia | Schltr. | 0 | below the evidence gate |
| Rhododendron gaultheriifolium | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron gemmiferum | M.N.Philipson & Philipson | 0 | below the evidence gate |
| Rhododendron genestierianum | Forrest | 0 | below the evidence gate |
| Rhododendron gideonii | Argent | 0 | below the evidence gate |
| Rhododendron giulianettii | Lauterb. | 0 | below the evidence gate |
| Rhododendron glabrifilum | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron glabriflorum | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron glanduliferum | Franch. | 0 | below the evidence gate |
| Rhododendron glaucophyllum | Rehder | 0 | below the evidence gate |
| Rhododendron glischroides | Tagg & Forrest | 0 | below the evidence gate |
| Rhododendron glischrum | Balf.f. & W.W.Sm. | 0 | below the evidence gate |
| Rhododendron gologense | C.J.Xu & Z.J.Zhao | 0 | below the evidence gate |
| Rhododendron gongshanense | T.L.Ming | 0 | below the evidence gate |
| Rhododendron goodenoughii | Sleumer | 0 | below the evidence gate |
| Rhododendron goyozanense | (M.Kikuchi) Craven | 0 | below the evidence gate |
| Rhododendron gracilentum | F.Muell. | 0 | below the evidence gate |
| Rhododendron grande | Wight | 0 | below the evidence gate |
| Rhododendron gratiosum | P.C.Tam | 0 | below the evidence gate |
| Rhododendron griersonianum | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron guangnanense | R.C.Fang | 0 | below the evidence gate |
| Rhododendron guihainianum | G.Z.Li | 0 | below the evidence gate |
| Rhododendron guizhongense | G.Z.Li | 0 | below the evidence gate |
| Rhododendron guizhouense | M.Y.Fang | 0 | below the evidence gate |
| Rhododendron gumineense | Craven | 0 | below the evidence gate |
| Rhododendron habbemae | Koord. | 0 | below the evidence gate |
| Rhododendron habrotrichum | Balf.f. & W.W.Sm. | 0 | below the evidence gate |
| Rhododendron haematodes | Franch. | 0 | below the evidence gate |
| Rhododendron haematophthalmum | Sleumer | 0 | below the evidence gate |
| Rhododendron hainanense | Merr. | 0 | below the evidence gate |
| Rhododendron hameliiflorum | Wernham | 0 | below the evidence gate |
| Rhododendron hanceanum | Hemsl. | 0 | below the evidence gate |
| Rhododendron hancockii | Hemsl. | 0 | below the evidence gate |
| Rhododendron hangzhouense | W.P.Fang & M.Y.He | 0 | below the evidence gate |
| Rhododendron haofui | Chun & W.P.Fang | 0 | below the evidence gate |
| Rhododendron hartleyi | Sleumer | 0 | below the evidence gate |
| Rhododendron hatamense | Becc. | 0 | below the evidence gate |
| Rhododendron heatherae | Rushforth | 0 | below the evidence gate |
| Rhododendron heizhugouense | M.Y.He & L.C.Hu | 0 | below the evidence gate |
| Rhododendron heliolepis | Franch. | 0 | below the evidence gate |
| Rhododendron hellwigii | Warb. | 0 | below the evidence gate |
| Rhododendron helodes | Sleumer | 0 | below the evidence gate |
| Rhododendron hemitrichotum | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron hemsleyanum | E.H.Wilson | 0 | below the evidence gate |
| Rhododendron henanense | W.P.Fang | 0 | below the evidence gate |
| Rhododendron henryi | Hance | 0 | below the evidence gate |
| Rhododendron herzogii | Warb. | 0 | below the evidence gate |
| Rhododendron heteroclitum | H.P.Yang | 0 | below the evidence gate |
| Rhododendron heterolepis | Danet | 0 | below the evidence gate |
| Rhododendron himantodes | Sleumer | 0 | below the evidence gate |
| Rhododendron hippophaeoides | Balf.f. & W.W.Sm. | 0 | below the evidence gate |
| Rhododendron hirsutipetiolatum | R.C.Fang & A.L.Zhang | 0 | below the evidence gate |
| Rhododendron hirtipes | Tagg ex Kingdon-Ward | 0 | below the evidence gate |
| Rhododendron hirtolepidotum | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron hodgsonii | Hook.f. | 0 | below the evidence gate |
| Rhododendron hoi | W.P.Fang | 0 | below the evidence gate |
| Rhododendron hooglandii | Sleumer | 0 | below the evidence gate |
| Rhododendron hookeri | Nutt. | 0 | below the evidence gate |
| Rhododendron horlickianum | Davidian | 0 | below the evidence gate |
| Rhododendron huadingense | B.Y.Ding & Y.Y.Fang | 0 | below the evidence gate |
| Rhododendron huangpingense | Xiang Chen & Jia Y.Huang | 0 | below the evidence gate |
| Rhododendron huanshanense | S.S.Ying | 0 | below the evidence gate |
| Rhododendron huanum | W.P.Fang | 0 | below the evidence gate |
| Rhododendron huguangense | P.C.Tam | 0 | below the evidence gate |
| Rhododendron huidongense | T.L.Ming | 0 | below the evidence gate |
| Rhododendron hunanense | Chun & P.C.Tam | 0 | below the evidence gate |
| Rhododendron hunnewellianum | Rehder & E.H.Wilson | 0 | below the evidence gate |
| Rhododendron hyacinthosmum | Sleumer | 0 | below the evidence gate |
| Rhododendron hylaeum | Balf.f. & Farrer | 0 | below the evidence gate |
| Rhododendron hypoglaucum | Hemsl. | 0 | below the evidence gate |
| Rhododendron hypoleucophyllum | Makino ex H.Hara | 0 | below the evidence gate |
| Rhododendron hypoleucum | (Kom.) Harmaja | 0 | below the evidence gate |
| Rhododendron hyugaense | (T.Yamaz.) T.Yamaz | 0 | below the evidence gate |
| Rhododendron igneum | Cowan | 0 | below the evidence gate |
| Rhododendron impeditum | Balf.f. & W.W.Sm. | 0 | below the evidence gate |
| Rhododendron impositum | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron impressopunctatum | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron inaequale | (C.B.Clarke) Hutch. | 0 | below the evidence gate |
| Rhododendron incommodum | Sleumer | 0 | below the evidence gate |
| Rhododendron inconspicuum | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron insculptum | Hutch. & Kingdon-Ward | 0 | below the evidence gate |
| Rhododendron insigne | Hemsl. & E.H.Wilson | 0 | below the evidence gate |
| Rhododendron intranervatum | Sleumer | 0 | below the evidence gate |
| Rhododendron intricatum | Franch. | 0 | below the evidence gate |
| Rhododendron invictum | Balf.f. & Farrer | 0 | below the evidence gate |
| Rhododendron irroratum | Franch. | 0 | below the evidence gate |
| Rhododendron iteophyllum | Hutch. | 0 | below the evidence gate |
| Rhododendron jasminiflorum | Hook. | 0 | below the evidence gate |
| Rhododendron jasminoides | M.Y.He | 0 | below the evidence gate |
| Rhododendron jiewhoei | Argent | 0 | below the evidence gate |
| Rhododendron jinboense | Xiang Chen & X.Chen | 0 | below the evidence gate |
| Rhododendron jinchangense | Z.H.Yang | 0 | below the evidence gate |
| Rhododendron jingangshanicum | P.C.Tam | 0 | below the evidence gate |
| Rhododendron jinpingense | W.P.Fang & M.Y.He | 0 | below the evidence gate |
| Rhododendron jinxiuense | W.P.Fang & M.Y.He | 0 | below the evidence gate |
| Rhododendron jiucaipingense | Jian Xu & M.T.An | 0 | below the evidence gate |
| Rhododendron jiulongshanense | Xiang Chen & Jia Y.Huang | 0 | below the evidence gate |
| Rhododendron johnstoneanum | G.Watt ex Hutch. | 0 | below the evidence gate |
| Rhododendron joniense | Ching & C.H.Yang | 0 | below the evidence gate |
| Rhododendron kanehirae | E.H.Wilson | 0 | below the evidence gate |
| Rhododendron kantoense | S.Sakag. & Y.Watan. | 0 | below the evidence gate |
| Rhododendron kasoense | Hutch. & Kingdon-Ward | 0 | below the evidence gate |
| Rhododendron katsumatae | (M.Tash. & H.Hatta) Craven | 0 | below the evidence gate |
| Rhododendron keiskei | Miq. | 0 | below the evidence gate |
| Rhododendron keleticum | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron kemulense | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron kendrickii | Nutt. | 0 | below the evidence gate |
| Rhododendron kerowagiense | Argent | 0 | below the evidence gate |
| Rhododendron kiangsiense | W.P.Fang | 0 | below the evidence gate |
| Rhododendron kiusianum | Makino | 0 | below the evidence gate |
| Rhododendron kochii | Stein | 0 | below the evidence gate |
| Rhododendron kogo | Danet | 0 | below the evidence gate |
| Rhododendron komiyamae | Makino | 0 | below the evidence gate |
| Rhododendron kongboense | Kingdon-Ward ex Hutch. | 0 | below the evidence gate |
| Rhododendron konori | Becc. | 0 | below the evidence gate |
| Rhododendron korthalsii | Miq. | 0 | below the evidence gate |
| Rhododendron kroniae | Craven | 0 | below the evidence gate |
| Rhododendron kuomeianum | Yu H.Chang, J.Nielsen & Y.P.Ma | 0 | below the evidence gate |
| Rhododendron kwangsiense | Hu ex P.C.Tam | 0 | below the evidence gate |
| Rhododendron kwangtungense | Merr. & Chun | 0 | below the evidence gate |
| Rhododendron kyawii | Lace & W.W.Sm. | 0 | below the evidence gate |
| Rhododendron kyushuense | Minamit. | 0 | below the evidence gate |
| Rhododendron labolengense | Ching & C.H.Yang | 0 | below the evidence gate |
| Rhododendron lacteum | Franch. | 0 | below the evidence gate |
| Rhododendron laetum | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron lagopus | Nakai | 0 | below the evidence gate |
| Rhododendron lagunculicarpum | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron lambianum | Argent | 0 | below the evidence gate |
| Rhododendron lamii | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron lampongum | Miq. | 0 | below the evidence gate |
| Rhododendron lamrialianum | Argent & T.J.Barkman | 0 | below the evidence gate |
| Rhododendron lanatoides | D.F.Chamb. | 0 | below the evidence gate |
| Rhododendron lanatum | Hook.f. | 0 | below the evidence gate |
| Rhododendron lanceolatum | Ridl. | 0 | below the evidence gate |
| Rhododendron langbianense | A.Chev. ex Dop | 0 | below the evidence gate |
| Rhododendron lanigerum | Tagg | 0 | below the evidence gate |
| Rhododendron laojunshanense | M.Y.Fang | 0 | below the evidence gate |
| Rhododendron lasiostylum | Hayata | 0 | below the evidence gate |
| Rhododendron lateriflorum | R.C.Fang & A.L.Zhang | 0 | below the evidence gate |
| Rhododendron laudandum | Cowan | 0 | below the evidence gate |
| Rhododendron leigongshanense | C.H.Yang, Z.G.Xie, Y.F.Yu & Z.R.Yang | 0 | below the evidence gate |
| Rhododendron leishanicum | W.P.Fang & X.S.Zhang | 0 | below the evidence gate |
| Rhododendron lepidostylum | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron leptanthum | F.Muell. | 0 | below the evidence gate |
| Rhododendron leptobrachion | Sleumer | 0 | below the evidence gate |
| Rhododendron leptocarpum | Nutt. | 0 | below the evidence gate |
| Rhododendron leptocladon | Dop | 0 | below the evidence gate |
| Rhododendron leptomorphum | Sleumer | 0 | below the evidence gate |
| Rhododendron leptopeplum | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron leptothrium | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron leucaspis | Tagg | 0 | below the evidence gate |
| Rhododendron leucogigas | Sleumer | 0 | below the evidence gate |
| Rhododendron levinei | Merr. | 0 | below the evidence gate |
| Rhododendron leytense | Merr. | 0 | below the evidence gate |
| Rhododendron liangshanicum | Z.J.Zhao | 0 | below the evidence gate |
| Rhododendron liaoxigense | S.L.Tung & Z.Lu | 0 | below the evidence gate |
| Rhododendron liboense | Zheng R.Chen & K.M.Lan | 0 | below the evidence gate |
| Rhododendron lilacinum | Xiang Chen & X.Chen | 0 | below the evidence gate |
| Rhododendron liliiflorum | H.Lév. | 0 | below the evidence gate |
| Rhododendron lindaueanum | Koord. | 0 | below the evidence gate |
| Rhododendron lineare | Merr. | 0 | below the evidence gate |
| Rhododendron linearilobum | R.C.Fang & A.L.Zhang | 0 | below the evidence gate |
| Rhododendron linguiense | G.Z.Li | 0 | below the evidence gate |
| Rhododendron litchiifolium | T.C.Wu & P.C.Tam | 0 | below the evidence gate |
| Rhododendron loboense | H.F.Copel. | 0 | below the evidence gate |
| Rhododendron loerzingii | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron lohitense | D.Bhattach. | 0 | below the evidence gate |
| Rhododendron lompohense | Argent | 0 | below the evidence gate |
| Rhododendron longesquamatum | C.K.Schneid. | 0 | below the evidence gate |
| Rhododendron longicalyx | M.Y.Fang | 0 | below the evidence gate |
| Rhododendron longifalcatum | P.C.Tam | 0 | below the evidence gate |
| Rhododendron longiflorum | Lindl. | 0 | below the evidence gate |
| Rhododendron longilobum | L.M.Gao & D.Z.Li | 0 | below the evidence gate |
| Rhododendron longipedicellatum | Lei Cai & Y.P.Ma | 0 | below the evidence gate |
| Rhododendron longipes | Rehder & E.H.Wilson | 0 | below the evidence gate |
| Rhododendron longistylum | Rehder & E.H.Wilson | 0 | below the evidence gate |
| Rhododendron loniceriflorum | P.C.Tam | 0 | below the evidence gate |
| Rhododendron loranthiflorum | Sleumer | 0 | below the evidence gate |
| Rhododendron lowndesii | Davidian | 0 | below the evidence gate |
| Rhododendron luciferum | (Cowan) Cowan | 0 | below the evidence gate |
| Rhododendron ludlowii | Cowan | 0 | below the evidence gate |
| Rhododendron luhuoense | H.P.Yang | 0 | below the evidence gate |
| Rhododendron lukiangense | Franch. | 0 | below the evidence gate |
| Rhododendron lulangense | L.C.Hu & Tateishi | 0 | below the evidence gate |
| Rhododendron lungchiense | W.P.Fang | 0 | below the evidence gate |
| Rhododendron luohanbaense | Yong L.Zhao & D.T.Liu | 0 | below the evidence gate |
| Rhododendron luraluense | Sleumer | 0 | below the evidence gate |
| Rhododendron luteiflorum | (Davidian) Cullen | 0 | below the evidence gate |
| Rhododendron lutescens | Franch. | 0 | below the evidence gate |
| Rhododendron macabeanum | G.Watt ex Balf.f. | 0 | below the evidence gate |
| Rhododendron macgregoriae | F.Muell. | 0 | below the evidence gate |
| Rhododendron mackenzianum | Forrest | 0 | below the evidence gate |
| Rhododendron macrosiphon | Sleumer | 0 | below the evidence gate |
| Rhododendron maculatum | Xiang Chen & Jia Y.Huang | 0 | below the evidence gate |
| Rhododendron maculiferum | Franch. | 0 | below the evidence gate |
| Rhododendron madulidii | Argent | 0 | below the evidence gate |
| Rhododendron magnificum | Kingdon-Ward | 0 | below the evidence gate |
| Rhododendron magniflorum | W.K.Hu | 0 | below the evidence gate |
| Rhododendron mainlingense | S.H.Huang & R.C.Fang | 0 | below the evidence gate |
| Rhododendron majus | (J.J.Sm.) Sleumer | 0 | below the evidence gate |
| Rhododendron makinoi | Tagg ex Nakai | 0 | below the evidence gate |
| Rhododendron malipoense | M.Y.He | 0 | below the evidence gate |
| Rhododendron mallotum | Balf.f. & Kingdon-Ward | 0 | below the evidence gate |
| Rhododendron maoerense | W.P.Fang & G.Z.Li | 0 | below the evidence gate |
| Rhododendron maowenense | Ching & C.H.Yang | 0 | below the evidence gate |
| Rhododendron mariae | Hance | 0 | below the evidence gate |
| Rhododendron martinianum | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron maxwellii | Gibbs | 0 | below the evidence gate |
| Rhododendron mayebarae | Nakai & Hara | 0 | below the evidence gate |
| Rhododendron meagae | Mambrasar & Hutabarat | 0 | below the evidence gate |
| Rhododendron mechukae | A.A.Mao & A.Paul | 0 | below the evidence gate |
| Rhododendron meddianum | Forrest | 0 | below the evidence gate |
| Rhododendron medoense | W.P.Fang & M.Y.He | 0 | below the evidence gate |
| Rhododendron megacalyx | Balf.f. & Kingdon-Ward | 0 | below the evidence gate |
| Rhododendron megalanthum | M.Y.Fang | 0 | below the evidence gate |
| Rhododendron megeratum | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron meijeri | Argent, A.Lamb & Phillipps | 0 | below the evidence gate |
| Rhododendron mekongense | Franch. | 0 | below the evidence gate |
| Rhododendron melantherum | Schltr. | 0 | below the evidence gate |
| Rhododendron meliphagidum | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron mendumiae | Argent | 0 | below the evidence gate |
| Rhododendron mengtszense | Balf.f. & W.W.Sm. | 0 | below the evidence gate |
| Rhododendron meridionale | P.C.Tam | 0 | below the evidence gate |
| Rhododendron mianningense | Z.J.Zhao | 0 | below the evidence gate |
| Rhododendron microcarpum | R.L.Liu & L.M.Gao | 0 | below the evidence gate |
| Rhododendron microgynum | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron micromalayanum | Sleumer | 0 | below the evidence gate |
| Rhododendron microphyllum | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron microphyton | Franch. | 0 | below the evidence gate |
| Rhododendron milleri | Argent | 0 | below the evidence gate |
| Rhododendron mimetes | Tagg & Forrest | 0 | below the evidence gate |
| Rhododendron mindanaense | Merr. | 0 | below the evidence gate |
| Rhododendron mingii | Y.P.Ma, L.M.Gao & E.D.Liu | 0 | below the evidence gate |
| Rhododendron miniatum | Cowan | 0 | below the evidence gate |
| Rhododendron minutiflorum | Hu | 0 | below the evidence gate |
| Rhododendron minyaense | Philipson & M.N.Philipson | 0 | below the evidence gate |
| Rhododendron mitriforme | P.C.Tam | 0 | below the evidence gate |
| Rhododendron miyiense | W.K.Hu | 0 | below the evidence gate |
| Rhododendron mogeanum | Argent | 0 | below the evidence gate |
| Rhododendron mollianum | Koord. | 0 | below the evidence gate |
| Rhododendron mollicomum | Balf.f. & W.W.Sm. | 0 | below the evidence gate |
| Rhododendron monanthum | Balf.f. & W.W.Sm. | 0 | below the evidence gate |
| Rhododendron monkoboense | Argent | 0 | below the evidence gate |
| Rhododendron monodii | (H.J.Lam) Argent | 0 | below the evidence gate |
| Rhododendron montiganum | T.L.Ming | 0 | below the evidence gate |
| Rhododendron montroseanum | Davidian | 0 | below the evidence gate |
| Rhododendron morii | Hayata | 0 | below the evidence gate |
| Rhododendron moupinense | Franch. | 0 | below the evidence gate |
| Rhododendron mucronatum | (Blume) G.Don | 0 | below the evidence gate |
| Rhododendron multicolor | Miq. | 0 | below the evidence gate |
| Rhododendron multiflorum | (Maxim.) Craven | 0 | below the evidence gate |
| Rhododendron multinervium | Sleumer | 0 | below the evidence gate |
| Rhododendron mulyaniae | Mambrasar | 0 | below the evidence gate |
| Rhododendron muscicola | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron muscipulum | Danet | 0 | below the evidence gate |
| Rhododendron myrsinifolium | Ching ex W.P.Fang & M.Y.He | 0 | below the evidence gate |
| Rhododendron myrsinites | Sleumer | 0 | below the evidence gate |
| Rhododendron naamkwanense | Merr. | 0 | below the evidence gate |
| Rhododendron nakotiltum | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron nanjianense | K.M.Feng & Z.H.Yang | 0 | below the evidence gate |
| Rhododendron nanophyton | Sleumer | 0 | below the evidence gate |
| Rhododendron nanpingense | P.C.Tam | 0 | below the evidence gate |
| Rhododendron nantauense | S.S.Ying | 0 | below the evidence gate |
| Rhododendron natalicium | Sleumer | 0 | below the evidence gate |
| Rhododendron nayarii | G.D.Pal | 0 | below the evidence gate |
| Rhododendron neobritannicum | Sleumer | 0 | below the evidence gate |
| Rhododendron neriiflorum | Franch. | 0 | below the evidence gate |
| Rhododendron neriifolium | Schltr. | 0 | below the evidence gate |
| Rhododendron nervosulum | Sleumer | 0 | below the evidence gate |
| Rhododendron ngawchangense | M.N.Philipson & Philipson | 0 | below the evidence gate |
| Rhododendron nhatrangense | Dop | 0 | below the evidence gate |
| Rhododendron nieuwenhuisii | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron nigroglandulosum | Nitz. | 0 | below the evidence gate |
| Rhododendron nipponicum | Mastsum. | 0 | below the evidence gate |
| Rhododendron nitidulum | Rehder & E.H.Wilson | 0 | below the evidence gate |
| Rhododendron niveoflorum | Argent | 0 | below the evidence gate |
| Rhododendron niveum | Hook.f. | 0 | below the evidence gate |
| Rhododendron nortoniae | Merr. | 0 | below the evidence gate |
| Rhododendron nubicola | Wernham | 0 | below the evidence gate |
| Rhododendron nudipes | Nakai | 0 | below the evidence gate |
| Rhododendron nummatum | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron nuttallii | T.J.Booth | 0 | below the evidence gate |
| Rhododendron nyingchiense | R.C.Fang & S.H.Huang | 0 | below the evidence gate |
| Rhododendron nymphaeoides | W.K.Hu | 0 | below the evidence gate |
| Rhododendron oblancifolium | M.Y.Fang | 0 | below the evidence gate |
| Rhododendron ochraceum | Rehder & E.H.Wilson | 0 | below the evidence gate |
| Rhododendron octandrum | M.Y.He | 0 | below the evidence gate |
| Rhododendron oliganthum | Sleumer | 0 | below the evidence gate |
| Rhododendron opulentum | Sleumer | 0 | below the evidence gate |
| Rhododendron orbiculare | Decne. | 0 | below the evidence gate |
| Rhododendron orbiculatum | Ridl. | 0 | below the evidence gate |
| Rhododendron oreadum | Wernham | 0 | below the evidence gate |
| Rhododendron oreites | Sleumer | 0 | below the evidence gate |
| Rhododendron oreodoxa | Franch. | 0 | below the evidence gate |
| Rhododendron oreogenum | L.C.Hu | 0 | below the evidence gate |
| Rhododendron oreotrephes | W.W.Sm. | 0 | below the evidence gate |
| Rhododendron orthocladum | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron osuzuyamense | T.Yamaz | 0 | below the evidence gate |
| Rhododendron oxycoccoides | Sleumer | 0 | below the evidence gate |
| Rhododendron pachycarpon | Sleumer | 0 | below the evidence gate |
| Rhododendron pachyphyllum | W.P.Fang | 0 | below the evidence gate |
| Rhododendron pachypodum | Balf.f. & W.W.Sm. | 0 | below the evidence gate |
| Rhododendron pachysanthum | Hayata | 0 | below the evidence gate |
| Rhododendron pachystigma | Sleumer | 0 | below the evidence gate |
| Rhododendron pachytrichum | Franch. | 0 | below the evidence gate |
| Rhododendron pangeanum | A.A.Mao & Bhaumik | 0 | below the evidence gate |
| Rhododendron papillatum | Balf.f. & R.E.Cooper | 0 | below the evidence gate |
| Rhododendron papuanum | Becc. | 0 | below the evidence gate |
| Rhododendron parishii | C.B.Clarke | 0 | below the evidence gate |
| Rhododendron parmulatum | Cowan | 0 | below the evidence gate |
| Rhododendron parryae | Hutch. | 0 | below the evidence gate |
| Rhododendron parvulum | Sleumer | 0 | below the evidence gate |
| Rhododendron patuergense | S.S.Ying | 0 | below the evidence gate |
| Rhododendron pauciflorum | King & Gamble | 0 | below the evidence gate |
| Rhododendron pemakoense | Kingdon-Ward | 0 | below the evidence gate |
| Rhododendron pendulum | Hook.f. | 0 | below the evidence gate |
| Rhododendron perakense | King & Gamble | 0 | below the evidence gate |
| Rhododendron perplexum | Sleumer | 0 | below the evidence gate |
| Rhododendron petrocharis | Diels | 0 | below the evidence gate |
| Rhododendron phaeochitum | F.Muell. | 0 | below the evidence gate |
| Rhododendron phaeochristum | Sleumer | 0 | below the evidence gate |
| Rhododendron phaeochrysum | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron phaeops | Sleumer | 0 | below the evidence gate |
| Rhododendron piercei | Davidian | 0 | below the evidence gate |
| Rhododendron pilostylum | W.K.Hu | 0 | below the evidence gate |
| Rhododendron pinetorum | P.C.Tam | 0 | below the evidence gate |
| Rhododendron pingbianense | M.Y.Fang | 0 | below the evidence gate |
| Rhododendron pingianum | W.P.Fang | 0 | below the evidence gate |
| Rhododendron platyphyllum | Franch. ex Balf.f. & W.W.Sm. | 0 | below the evidence gate |
| Rhododendron platypodum | Diels | 0 | below the evidence gate |
| Rhododendron pleianthum | Sleumer | 0 | below the evidence gate |
| Rhododendron pleistanthum | E.H.Wilding | 0 | below the evidence gate |
| Rhododendron pocophorum | Balf.f. ex Tagg | 0 | below the evidence gate |
| Rhododendron pogonophyllum | Cowan & Davidian | 0 | below the evidence gate |
| Rhododendron poluninii | Davidian | 0 | below the evidence gate |
| Rhododendron polyanthemum | Sleumer | 0 | below the evidence gate |
| Rhododendron polycladum | Franch. | 0 | below the evidence gate |
| Rhododendron polylepis | Franch. | 0 | below the evidence gate |
| Rhododendron polytrichum | W.P.Fang | 0 | below the evidence gate |
| Rhododendron pomense | Cowan & Davidian | 0 | below the evidence gate |
| Rhododendron populare | Cowan | 0 | below the evidence gate |
| Rhododendron poremense | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron porphyranthes | Sleumer | 0 | below the evidence gate |
| Rhododendron potaninii | Batalin | 0 | below the evidence gate |
| Rhododendron praestans | Balf.f. & W.W.Sm. | 0 | below the evidence gate |
| Rhododendron praeteritum | Hutch. | 0 | below the evidence gate |
| Rhododendron praetervisum | Sleumer | 0 | below the evidence gate |
| Rhododendron praevernum | Hutch. | 0 | below the evidence gate |
| Rhododendron prainianum | Koord. | 0 | below the evidence gate |
| Rhododendron prattii | Franch. | 0 | below the evidence gate |
| Rhododendron preptum | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron primuliflorum | Bureau & Franch. | 0 | below the evidence gate |
| Rhododendron principis | Bureau & Franch. | 0 | below the evidence gate |
| Rhododendron proliferum | Sleumer | 0 | below the evidence gate |
| Rhododendron pronum | Tagg & Forrest | 0 | below the evidence gate |
| Rhododendron protandrum | Sleumer | 0 | below the evidence gate |
| Rhododendron proteoides | Balf.f. & W.W.Sm. | 0 | below the evidence gate |
| Rhododendron protistum | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron pruniflorum | Hutch. & Kingdon-Ward | 0 | below the evidence gate |
| Rhododendron prunifolium | (Small) Millais | 0 | below the evidence gate |
| Rhododendron przewalskii | Maxim. | 0 | below the evidence gate |
| Rhododendron pseudobuxifolium | Sleumer | 0 | below the evidence gate |
| Rhododendron pseudociliipes | Cullen | 0 | below the evidence gate |
| Rhododendron pseudomaddenii | A.A.Mao & Bhaumik | 0 | below the evidence gate |
| Rhododendron pseudotrichanthum | Sleumer | 0 | below the evidence gate |
| Rhododendron psilanthum | Sleumer | 0 | below the evidence gate |
| Rhododendron pubescens | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron pubicostatum | T.L.Ming | 0 | below the evidence gate |
| Rhododendron pubigermen | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron pudiense | Xiang Chen & Jia Y.Huang | 0 | below the evidence gate |
| Rhododendron pudingense | X.Y.Dai, C.H.Yang & Y.P.Ma | 0 | below the evidence gate |
| Rhododendron pudorinum | Sleumer | 0 | below the evidence gate |
| Rhododendron pudorosum | Cowan | 0 | below the evidence gate |
| Rhododendron pugeense | L.C.Hu | 0 | below the evidence gate |
| Rhododendron pulchroides | Chun & W.P.Fang | 0 | below the evidence gate |
| Rhododendron pulleanum | Koord. | 0 | below the evidence gate |
| Rhododendron pumilum | Hook.f. | 0 | below the evidence gate |
| Rhododendron punctifolium | L.C.Hu | 0 | below the evidence gate |
| Rhododendron purdomii | Rehder & E.H.Wilson | 0 | below the evidence gate |
| Rhododendron purpureiflorum | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron pusillum | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron pyrrhophorum | Sleumer | 0 | below the evidence gate |
| Rhododendron qianyangense | M.Y.He | 0 | below the evidence gate |
| Rhododendron qiaojiaense | L.M.Gao & D.Z.Li | 0 | below the evidence gate |
| Rhododendron qinghaiense | Ching ex W.Y.Wang | 0 | below the evidence gate |
| Rhododendron quadrasianum | S.Vidal | 0 | below the evidence gate |
| Rhododendron racemosum | Franch. | 0 | below the evidence gate |
| Rhododendron radendum | W.P.Fang | 0 | below the evidence gate |
| Rhododendron radians | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron ramipilosum | T.L.Ming | 0 | below the evidence gate |
| Rhododendron ramsdenianum | Cowan | 0 | below the evidence gate |
| Rhododendron rappardii | Sleumer | 0 | below the evidence gate |
| Rhododendron rarilepidotum | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron rarum | Schltr. | 0 | below the evidence gate |
| Rhododendron rawatii | I.D.Rai & B.S.Adhikari | 0 | below the evidence gate |
| Rhododendron recurvoides | Tagg & Forrest | 0 | below the evidence gate |
| Rhododendron redowskianum | Maxim. | 0 | below the evidence gate |
| Rhododendron renschianum | Sleumer | 0 | below the evidence gate |
| Rhododendron reticulatum | D.Don ex G.Don | 0 | below the evidence gate |
| Rhododendron retrorsipilum | Sleumer | 0 | below the evidence gate |
| Rhododendron retusum | (Blume) Benn. | 0 | below the evidence gate |
| Rhododendron revolutum | Sleumer | 0 | below the evidence gate |
| Rhododendron rex | H.Lév. | 0 | below the evidence gate |
| Rhododendron reynosoi | Argent | 0 | below the evidence gate |
| Rhododendron rhodanthum | M.Y.He | 0 | below the evidence gate |
| Rhododendron rhodochroum | Sleumer | 0 | below the evidence gate |
| Rhododendron rhodoleucum | Sleumer | 0 | below the evidence gate |
| Rhododendron rhodosalpinx | Sleumer | 0 | below the evidence gate |
| Rhododendron rhodostomum | Sleumer | 0 | below the evidence gate |
| Rhododendron rhombifolium | R.C.Fang | 0 | below the evidence gate |
| Rhododendron rigidum | Franch. | 0 | below the evidence gate |
| Rhododendron rimicola | X.L.Tian, Y.P.Ma & J.Nielsen | 0 | below the evidence gate |
| Rhododendron riparioides | (Cullen) Cubey | 0 | below the evidence gate |
| Rhododendron ripense | Makino | 0 | below the evidence gate |
| Rhododendron ripleyi | Merr. | 0 | below the evidence gate |
| Rhododendron ririei | Hemsl. & E.H.Wilson | 0 | below the evidence gate |
| Rhododendron rivulare | Hand.-Mazz. | 0 | below the evidence gate |
| Rhododendron robinsonii | Ridl. | 0 | below the evidence gate |
| Rhododendron roseatum | Hutch. | 0 | below the evidence gate |
| Rhododendron roseiflorum | P.F.Stevens | 0 | below the evidence gate |
| Rhododendron rosendahlii | Sleumer | 0 | below the evidence gate |
| Rhododendron rothschildii | Davidian | 0 | below the evidence gate |
| Rhododendron rousei | Argent & Madulid | 0 | below the evidence gate |
| Rhododendron roxieanum | Forrest | 0 | below the evidence gate |
| Rhododendron roxieoides | D.F.Chamb. | 0 | below the evidence gate |
| Rhododendron rubellum | Sleumer | 0 | below the evidence gate |
| Rhododendron rubiginosum | Franch. | 0 | below the evidence gate |
| Rhododendron rubineiflorum | Craven | 0 | below the evidence gate |
| Rhododendron rubrobracteatum | Sleumer | 0 | below the evidence gate |
| Rhododendron rufescens | Franch. | 0 | below the evidence gate |
| Rhododendron rufohirtum | Hand.-Mazz. | 0 | below the evidence gate |
| Rhododendron rufosquamosum | Hutch. | 0 | below the evidence gate |
| Rhododendron rufum | Batalin | 0 | below the evidence gate |
| Rhododendron rugosum | H.Low ex Hook.f. | 0 | below the evidence gate |
| Rhododendron rupicola | W.W.Sm. | 0 | below the evidence gate |
| Rhododendron rupivalleculatum | P.C.Tam | 0 | below the evidence gate |
| Rhododendron rushforthii | Argent & D.F.Chamb. | 0 | below the evidence gate |
| Rhododendron russatum | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron ruttenii | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron sajanense | Stepanov | 0 | below the evidence gate |
| Rhododendron salicifolium | Becc. | 0 | below the evidence gate |
| Rhododendron saluenense | Franch. | 0 | below the evidence gate |
| Rhododendron sanctum | Nakai | 0 | below the evidence gate |
| Rhododendron sanguineum | Franch. | 0 | below the evidence gate |
| Rhododendron santapaui | Sastry, Kataki, Pet.A.Cox, Pat.Cox & Hutchison | 0 | below the evidence gate |
| Rhododendron sargentianum | Rehder & E.H.Wilson | 0 | below the evidence gate |
| Rhododendron saxatile | B.Y.Ding & Y.Y.Fang | 0 | below the evidence gate |
| Rhododendron saxicola | Sleumer | 0 | below the evidence gate |
| Rhododendron saxifragoides | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron sayeri | Sleumer | 0 | below the evidence gate |
| Rhododendron scabridibracteum | Sleumer | 0 | below the evidence gate |
| Rhododendron scabrifolium | Franch. | 0 | below the evidence gate |
| Rhododendron scabrum | G.Don | 0 | below the evidence gate |
| Rhododendron scarlatinum | Sleumer | 0 | below the evidence gate |
| Rhododendron schistocalyx | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron schizostigma | Sleumer | 0 | below the evidence gate |
| Rhododendron schlechteri | Lauterb. | 0 | below the evidence gate |
| Rhododendron scopulorum | Hutch. | 0 | below the evidence gate |
| Rhododendron scopulum | (G.Z.Li) G.Z.Li | 0 | below the evidence gate |
| Rhododendron scortechinii | King & Gamble | 0 | below the evidence gate |
| Rhododendron searleanum | Sleumer | 0 | below the evidence gate |
| Rhododendron searsiae | Rehder & E.H.Wilson | 0 | below the evidence gate |
| Rhododendron seimundii | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron seinghkuense | Kingdon-Ward | 0 | below the evidence gate |
| Rhododendron selense | Franch. | 0 | below the evidence gate |
| Rhododendron semibarbatum | Maxim. | 0 | below the evidence gate |
| Rhododendron semnoides | Tagg & Forrest | 0 | below the evidence gate |
| Rhododendron seniavinii | Maxim. | 0 | below the evidence gate |
| Rhododendron seranicum | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron serotinum | Hutch. | 0 | below the evidence gate |
| Rhododendron serpyllifolium | (A.Gray) Miq. | 0 | below the evidence gate |
| Rhododendron sessilifolium | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron setiferum | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron shaanxiense | W.P.Fang & Z.J.Zhao | 0 | below the evidence gate |
| Rhododendron shanii | W.P.Fang | 0 | below the evidence gate |
| Rhododendron shaoakouense | S.S.Ying | 0 | below the evidence gate |
| Rhododendron sherriffii | Cowan | 0 | below the evidence gate |
| Rhododendron shimenense | Q.X.Liu & C.M.Zhang | 0 | below the evidence gate |
| Rhododendron shimianense | W.P.Fang & P.S.Liu | 0 | below the evidence gate |
| Rhododendron shingbae | C.S.Purohit & Ram.Kumar | 0 | below the evidence gate |
| Rhododendron shweliense | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron sidereum | Balf.f. | 0 | below the evidence gate |
| Rhododendron siderophyllum | Franch. | 0 | below the evidence gate |
| Rhododendron sikangense | W.P.Fang | 0 | below the evidence gate |
| Rhododendron sikayotaizanense | Masam. | 0 | below the evidence gate |
| Rhododendron sikkimense | D.K.Pradhan | 0 | below the evidence gate |
| Rhododendron simulans | J.J.Sm. ex Sleumer | 0 | below the evidence gate |
| Rhododendron sinofalconeri | Balf.f. | 0 | below the evidence gate |
| Rhododendron sinogrande | Balf.f. & W.W.Sm. | 0 | below the evidence gate |
| Rhododendron sinonuttallii | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron siobriense | Argent | 0 | below the evidence gate |
| Rhododendron smirnowii | Trautv. ex Regel | 0 | below the evidence gate |
| Rhododendron sohayakiense | Y.Watan & T.Yukawa | 0 | below the evidence gate |
| Rhododendron sojolense | Argent | 0 | below the evidence gate |
| Rhododendron solitarium | Sleumer | 0 | below the evidence gate |
| Rhododendron sophistarum | Craven | 0 | below the evidence gate |
| Rhododendron sororium | Sleumer | 0 | below the evidence gate |
| Rhododendron souliei | Franch. | 0 | below the evidence gate |
| Rhododendron spanotrichum | Balf.f. & W.W.Sm. | 0 | below the evidence gate |
| Rhododendron sparsifolium | W.P.Fang | 0 | below the evidence gate |
| Rhododendron spathulatum | Ridl. | 0 | below the evidence gate |
| Rhododendron sperabile | Balf.f. & Farrer | 0 | below the evidence gate |
| Rhododendron sperabiloides | Tagg & Forrest | 0 | below the evidence gate |
| Rhododendron sphaeroblastum | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron spiciferum | Franch. | 0 | below the evidence gate |
| Rhododendron spilotum | Balf.f. & Farrer | 0 | below the evidence gate |
| Rhododendron spinuliferum | Franch. | 0 | below the evidence gate |
| Rhododendron spondylophyllum | F.Muell. | 0 | below the evidence gate |
| Rhododendron stamineum | Franch. | 0 | below the evidence gate |
| Rhododendron stanleyi | S.James & Argent | 0 | below the evidence gate |
| Rhododendron stapfianum | Hemsl. ex Prain | 0 | below the evidence gate |
| Rhododendron starlingii | Rushforth & N.T.T.Huong | 0 | below the evidence gate |
| Rhododendron stelligerum | Sleumer | 0 | below the evidence gate |
| Rhododendron stenophyllum | Hook.f. ex Stapf | 0 | below the evidence gate |
| Rhododendron stevensianum | Sleumer | 0 | below the evidence gate |
| Rhododendron stewartianum | Diels | 0 | below the evidence gate |
| Rhododendron stolleanum | Schltr. | 0 | below the evidence gate |
| Rhododendron stresemannii | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron strigillosum | Franch. | 0 | below the evidence gate |
| Rhododendron strigosum | R.L.Liu | 0 | below the evidence gate |
| Rhododendron subansiriense | D.F.Chamb. & Pet.A.Cox | 0 | below the evidence gate |
| Rhododendron subcerinum | P.C.Tam | 0 | below the evidence gate |
| Rhododendron subcrenulatum | Sleumer | 0 | below the evidence gate |
| Rhododendron subenerve | P.C.Tam | 0 | below the evidence gate |
| Rhododendron subestipitatum | Chun ex P.C.Tam | 0 | below the evidence gate |
| Rhododendron subflumineum | P.C.Tam | 0 | below the evidence gate |
| Rhododendron subroseum | Xiang Chen & Jia Y.Huang | 0 | below the evidence gate |
| Rhododendron subsessile | Rendle | 0 | below the evidence gate |
| Rhododendron subulatum | (Nakai) Harmaja | 0 | below the evidence gate |
| Rhododendron subuliferum | Sleumer | 0 | below the evidence gate |
| Rhododendron subulosum | J.J.Sm. ex Sleumer | 0 | below the evidence gate |
| Rhododendron succothii | Davidian | 0 | below the evidence gate |
| Rhododendron sugaui | Argent | 0 | below the evidence gate |
| Rhododendron sulfureum | Franch. | 0 | below the evidence gate |
| Rhododendron sumatranum | Merr. | 0 | below the evidence gate |
| Rhododendron suoilenhense | D.F.Chamb., N.T.T.Huong & Rushforth | 0 | below the evidence gate |
| Rhododendron superbum | Sleumer | 0 | below the evidence gate |
| Rhododendron supranubium | Hutch. | 0 | below the evidence gate |
| Rhododendron sutchuenense | Franch. | 0 | below the evidence gate |
| Rhododendron syringoideum | Sleumer | 0 | below the evidence gate |
| Rhododendron taggianum | Hutch. | 0 | below the evidence gate |
| Rhododendron taibaiense | Ching & H.P.Yang | 0 | below the evidence gate |
| Rhododendron taiense | Hutch. | 0 | below the evidence gate |
| Rhododendron taipaoense | T.C.Wu & P.C.Tam | 0 | below the evidence gate |
| Rhododendron taishunense | B.Y.Ding & Y.Y.Fang | 0 | below the evidence gate |
| Rhododendron taitungalpinum | S.S.Ying | 0 | below the evidence gate |
| Rhododendron taiwanalpinum | Ohwi | 0 | below the evidence gate |
| Rhododendron takeuchii | Argent | 0 | below the evidence gate |
| Rhododendron taliense | Franch. | 0 | below the evidence gate |
| Rhododendron tanastylum | Balf.f. & Kingdon-Ward | 0 | below the evidence gate |
| Rhododendron tapetiforme | Balf.f. & Kingdon-Ward | 0 | below the evidence gate |
| Rhododendron taronense | Hutch. | 0 | below the evidence gate |
| Rhododendron tatsienense | Franch. | 0 | below the evidence gate |
| Rhododendron taxifolium | Merr. | 0 | below the evidence gate |
| Rhododendron taxoides | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron telmateium | Balf.f. & W.W.Sm. | 0 | below the evidence gate |
| Rhododendron temenium | Balf.f. & Forrest | 0 | below the evidence gate |
| Rhododendron tenue | Ching ex W.P.Fang & M.Y.He | 0 | below the evidence gate |
| Rhododendron tenuifolium | R.C.Fang & S.H.Huang | 0 | below the evidence gate |
| Rhododendron tenuilaminare | P.C.Tam | 0 | below the evidence gate |
| Rhododendron tephropeploides | R.A.Baines & D.F.Chamb. | 0 | below the evidence gate |
| Rhododendron tephropeplum | Balf.f. & Farrer | 0 | below the evidence gate |
| Rhododendron tetramerum | (Makino) Nakai | 0 | below the evidence gate |
| Rhododendron thaumasianthum | Sleumer | 0 | below the evidence gate |
| Rhododendron thayerianum | Rehder & E.H.Wilson | 0 | below the evidence gate |
| Rhododendron thymifolium | Maxim. | 0 | below the evidence gate |
| Rhododendron tianlinense | P.C.Tam | 0 | below the evidence gate |
| Rhododendron tianmenshanense | C.L.Peng & L.H.Yan | 0 | below the evidence gate |
| Rhododendron tintinnabellum | Danet | 0 | below the evidence gate |
| Rhododendron titapuriense | A.A.Mao, K.N.E.Cox & D.F.Chamb. | 0 | below the evidence gate |
| Rhododendron tjiasmantoi | Mustaqim, Mambrasar & Hutabarat | 0 | below the evidence gate |
| Rhododendron torquescens | D.F.Chamb. | 0 | below the evidence gate |
| Rhododendron tosaense | Makino | 0 | below the evidence gate |
| Rhododendron toxopei | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron traillianum | Forrest & W.W.Sm. | 0 | below the evidence gate |
| Rhododendron trancongii | Argent & Rushforth | 0 | below the evidence gate |
| Rhododendron trichanthum | Rehder | 0 | below the evidence gate |
| Rhododendron trichocladum | Franch. | 0 | below the evidence gate |
| Rhododendron trichogynum | L.C.Hu | 0 | below the evidence gate |
| Rhododendron trichostomum | Franch. | 0 | below the evidence gate |
| Rhododendron trilectorum | Cowan | 0 | below the evidence gate |
| Rhododendron trinerve | Franch. ex Boissieu | 0 | below the evidence gate |
| Rhododendron triumphans | Yersin & A.Chev. | 0 | below the evidence gate |
| Rhododendron truncatovarium | L.M.Gao & D.Z.Li | 0 | below the evidence gate |
| Rhododendron truncicola | Sleumer | 0 | below the evidence gate |
| Rhododendron tsaii | W.P.Fang | 0 | below the evidence gate |
| Rhododendron tsariense | Cowan | 0 | below the evidence gate |
| Rhododendron tsinlingense | W.P.Fang ex J.Q.Fu | 0 | below the evidence gate |
| Rhododendron tsoi | Merr. | 0 | below the evidence gate |
| Rhododendron tsurugisanense | (T.Yamaz.) T.Yamaz | 0 | below the evidence gate |
| Rhododendron tsusiophyllum | Sugim. | 0 | below the evidence gate |
| Rhododendron tuba | Sleumer | 0 | below the evidence gate |
| Rhododendron tuberculiferum | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron tubiforme | (Cowan & Davidian) Davidian | 0 | below the evidence gate |
| Rhododendron tubulosum | Ching ex W.Y.Wang | 0 | below the evidence gate |
| Rhododendron tuhanense | Argent & T.J.Barkman | 0 | below the evidence gate |
| Rhododendron tutcherae | Hemsl. & E.H.Wilson | 0 | below the evidence gate |
| Rhododendron tyaihyonii | S.Sakag., H.J.Choi & S.C.Kim | 0 | below the evidence gate |
| Rhododendron ultimum | Wernham | 0 | below the evidence gate |
| Rhododendron unciferum | P.C.Tam | 0 | below the evidence gate |
| Rhododendron ungeonticum | A.P.Khokhr. & Mazurenko | 0 | below the evidence gate |
| Rhododendron uniflorum | Hutch. & Kingdon-Ward | 0 | below the evidence gate |
| Rhododendron urophyllum | W.P.Fang | 0 | below the evidence gate |
| Rhododendron uvariifolium | Diels | 0 | below the evidence gate |
| Rhododendron uwaense | H.Hara & T.Yamanaka | 0 | below the evidence gate |
| Rhododendron vaccinioides | Hook.f. | 0 | below the evidence gate |
| Rhododendron valentinianum | Forrest ex Hutch. | 0 | below the evidence gate |
| Rhododendron vanderbiltianum | Merr. | 0 | below the evidence gate |
| Rhododendron vaniotii | H.Lév. | 0 | below the evidence gate |
| Rhododendron vanvuurenii | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron vellereum | Hutch. ex Tagg | 0 | below the evidence gate |
| Rhododendron venator | Tagg ex L.Rothsch. | 0 | below the evidence gate |
| Rhododendron vernicosum | Franch. | 0 | below the evidence gate |
| Rhododendron verruciferum | W.K.Hu | 0 | below the evidence gate |
| Rhododendron versteegii | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron verticillatum | H.Low ex Lindl. | 0 | below the evidence gate |
| Rhododendron vesiculiferum | Tagg | 0 | below the evidence gate |
| Rhododendron vialii | Delavay & Franch. | 0 | below the evidence gate |
| Rhododendron vidalii | Rolfe | 0 | below the evidence gate |
| Rhododendron villosulum | J.J.Sm. | 0 | below the evidence gate |
| Rhododendron vinicolor | Sleumer | 0 | below the evidence gate |
| Rhododendron vinkii | Sleumer | 0 | below the evidence gate |
| Rhododendron virgatum | Hook.f. | 0 | below the evidence gate |
| Rhododendron viridescens | Hutch. | 0 | below the evidence gate |
| Rhododendron viriosum | Craven | 0 | below the evidence gate |
| Rhododendron viscidifolium | Davidian | 0 | below the evidence gate |
| Rhododendron viscidum | C.Z.Guo & Z.H.Liu | 0 | below the evidence gate |
| Rhododendron viscigemmatum | P.C.Tam | 0 | below the evidence gate |
| Rhododendron viscistylum | Nakai | 0 | below the evidence gate |
| Rhododendron vitis-idaea | Sleumer | 0 | below the evidence gate |
| Rhododendron walongense | Kingdon-Ward | 0 | below the evidence gate |
| Rhododendron wardii | W.W.Sm. | 0 | below the evidence gate |
| Rhododendron wasonii | Hemsl. & E.H.Wilson | 0 | below the evidence gate |
| Rhododendron watsonii | Hemsl. & E.H.Wilson | 0 | below the evidence gate |
| Rhododendron wattii | Cowan | 0 | below the evidence gate |
| Rhododendron websterianum | Rehder & E.H.Wilson | 0 | below the evidence gate |
| Rhododendron wentianum | Koord. | 0 | below the evidence gate |
| Rhododendron westlandii | Hemsl. | 0 | below the evidence gate |
| Rhododendron weyrichii | Maxim. | 0 | below the evidence gate |
| Rhododendron whiteheadii | Rendle | 0 | below the evidence gate |
| Rhododendron widjajae | Argent & Mambrasar | 0 | below the evidence gate |
| Rhododendron wilkiei | Argent | 0 | below the evidence gate |
| Rhododendron williamsianum | Rehder & E.H.Wilson | 0 | below the evidence gate |
| Rhododendron williamsii | Merr. ex H.F.Copel. | 0 | below the evidence gate |
| Rhododendron wiltonii | Hemsl. & E.H.Wilson | 0 | below the evidence gate |
| Rhododendron wolongense | W.K.Hu | 0 | below the evidence gate |
| Rhododendron womersleyi | Sleumer | 0 | below the evidence gate |
| Rhododendron wongii | Hemsl. & E.H.Wilson | 0 | below the evidence gate |
| Rhododendron wrayi | King & Gamble | 0 | below the evidence gate |
| Rhododendron wrightianum | Koord. | 0 | below the evidence gate |
| Rhododendron wumingense | W.P.Fang | 0 | below the evidence gate |
| Rhododendron wuyishanicum | L.K.Ling | 0 | below the evidence gate |
| Rhododendron xanthopetalum | Merr. | 0 | below the evidence gate |
| Rhododendron xanthostephanum | Merr. | 0 | below the evidence gate |
| Rhododendron xenium | Gill.K.Br. & Craven | 0 | below the evidence gate |
| Rhododendron xiangganense | X.F.Jin & B.Y.Ding | 0 | below the evidence gate |
| Rhododendron xiaoxidongense | W.K.Hu | 0 | below the evidence gate |
| Rhododendron xiaoxueshanense | R.L.Liao & Y.P.Ma | 0 | below the evidence gate |
| Rhododendron xichangense | Z.J.Zhao | 0 | below the evidence gate |
| Rhododendron xiguense | Ching & H.P.Yang | 0 | below the evidence gate |
| Rhododendron xishuiense | C.H.Yang & C.D.Yang | 0 | below the evidence gate |
| Rhododendron yakuinsulare | Masam. | 0 | below the evidence gate |
| Rhododendron yakumontanum | (T.Yamaz) T.Yamaz | 0 | below the evidence gate |
| Rhododendron yakushimanum | Nakai | 0 | below the evidence gate |
| Rhododendron yakushimense | (M.Tash. & H.Hatta) Craven | 0 | below the evidence gate |
| Rhododendron yangmingshanense | P.C.Tam | 0 | below the evidence gate |
| Rhododendron yaogangxianense | Q.X.Liu | 0 | below the evidence gate |
| Rhododendron yaoshanense | L.M.Gao & S.D.Zhang | 0 | below the evidence gate |
| Rhododendron yaoshanicum | W.P.Fang & M.Y.He | 0 | below the evidence gate |
| Rhododendron yelliotii | Warb. | 0 | below the evidence gate |
| Rhododendron yizhangense | Q.X.Liu | 0 | below the evidence gate |
| Rhododendron yombuwurii | Hutabarat, Bandjolu & Zulfadli | 0 | below the evidence gate |
| Rhododendron yongii | Argent | 0 | below the evidence gate |
| Rhododendron yuanbaoshanense | Y.H.Deng & T.Ding | 0 | below the evidence gate |
| Rhododendron yungchangense | Cullen | 0 | below the evidence gate |
| Rhododendron yungningense | Balf.f. & Hutch. | 0 | below the evidence gate |
| Rhododendron yunnanense | Franch. | 0 | below the evidence gate |
| Rhododendron yunyianum | X.F.Jin & B.Y.Ding | 0 | below the evidence gate |
| Rhododendron yushuense | Z.J.Zhao | 0 | below the evidence gate |
| Rhododendron zaleucum | Balf.f. & W.W.Sm. | 0 | below the evidence gate |
| Rhododendron zekoense | Y.D.Sun & Z.J.Zhao | 0 | below the evidence gate |
| Rhododendron zhangjiajieense | C.L.Peng & L.H.Yan | 0 | below the evidence gate |
| Rhododendron zheguense | Ching & H.P.Yang | 0 | below the evidence gate |
| Rhododendron zhongdianense | L.C.Hu | 0 | below the evidence gate |
| Rhododendron ziyuanense | P.C.Tam | 0 | below the evidence gate |
| Rhododendron zoelleri | Warb. | 0 | below the evidence gate |
| Rhododendron zollingeri | J.J.Sm. | 0 | below the evidence gate |
This site is commercial, so it can only publish photographs licensed for commercial use. Roughly three quarters of the photographs on iNaturalist are CC BY-NC, which excludes them. A species needs at least three usable photographs before we will build it a page, because a page with one picture and no traits tells you nothing you could not get from a search result, and generating hundreds of thousands of those is precisely the practice that got the previous version of this site deleted.
So the species above without a link are not errors and they are not omissions. They are real, accepted plants that we cannot yet document to the standard we hold ourselves to, and the count in the photographs column is exactly how far short we fall.