| Noms géographiques | Noms scientifiques botaniques | Noms bibliques | Sobriquets | Noms d' établissements | 
| Noms historiques | Noms scientifiques zoologiques | Noms fictifs | Pseudonymes | 
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| Nom scientifique | Nom malgache | 
| Barringtonia racemosa | mahondro, manondro | 
| Colvillea racemosa | sarongazo | 
| Lumnitzera racemosa | lovintso, sarihanko | 
| Ocotea racemosa | farongimainty, tafanono, tafona, tafono, tafonona, tafononana, varongimainty, varongimavo, varongimena, varongy | 
| Rhodocolea racemosa | hitsikitsika, kitsikitsika, lomontsohy, rehitsika, tsetsefinantsoimenafelana | 
| Scleria racemosa | sirosera | 
| Desmodium radiatum | masotantely, tranontantely | 
| Cyperus radiatus | zozoro | 
| Obetia radula | amiambavy, amiana, amiandahy, amiandely, besofina, hafotramiana, hazomihaina, kiamiana, kolohoto, lain' amiana, mangilio, mianao, mihabe | 
| Astrotrichilia rakodomena | rakodomena | 
| Croton rakotonianii | lazalaza | 
| Drosera ramentacea | kimatanandro, mahatanando, mahatanandomena | 
| Brachylaena ramiflora var. | meranahazotokana | 
| Brachylaena ramiflora | hazotokana, kisaka, mananitra, mananotra, mananotsa, sotromorona | 
| Camptolepis ramiflora | boramena, marodimpeky | 
| Flacourtia ramontchi | lamontiala, lamonty, lamotsy, lamoty, ramontsy, voandamoty, voaramontsy | 
| Desmodium ramosissimum | mandravasarotra, tsilavondrivotra | 
| Equisetum ramosissimum | kitohitohy, maforefo, tsipihipina, tsitohinohino, tsitohintohina, tsitohitohy, tsitotohana | 
| Flacourtia ramoutchi | jingaoma, voatronaka | 
| Mauloutchia rarabe | molotradrango, molotrandongo, molotrandrongo, rarà, rarabe | 
| Calophyllum recedens | foraha, lintanina, lintanombato, litanona, tsindelo, tsitake, vintanina, vintano | 
| Phoenix reclinata var. | dara, daro, taratra, taratsa | 
| Phoenix reclinata | antrendry, kalabo, kalalo | 
| Costularia recurva | apimbananatra | 
| Psychotria reducta | mahalonify | 
| Dracaena reflexa var. | tavivola | 
| Dracaena reflexa | fanavy, hasindahy, hola, kosindahy, rajo, ranjo, ronjo, tavivola, tavivolalahy, tavola, tavolahy, tavolalahy, tavololahy, tavovola, tsihasinkasina, tsimitrona, tsimitrova | 
| Ficus reflexa | laza | 
| Vepris reflexifolia | tsilahitsa, tsilaitsy | 
| Adenia refracta | hola | 
| Lilium regale | lisy | 
| Osmunda regalis | ampangafenakoho, ampangandrano | 
| Croton regeneratrix | mongibe | 
| Delonix regia | monongo, tanaho, volotsara | 
| Ficus religiosa | aviavin-karana | 
| Tambourissa religiosa | ambora, laingafora, tamboneka | 
| Grewia repanda | sely | 
| Boerhavia repens | beha, behakototo, mavoravy, safary | 
| Dichondra repens | fanarondrimbana, telafoetra | 
| Humata repens | ahaka | 
| Jussiaea repens | sihanaka | 
| Oxalis repens | kidiadiamborona | 
| Rhynchelytrum repens | ahikongona, ahipody, menapaka | 
| Ipomoea reptans | lalandy | 
| Senecio resectus | mangaravina, tsimoninavaratra | 
| Potameia resonjo | resonjo, resonjokeliravina | 
| Lebeckia retamoides | kifafambohitra, rombalahy | 
| Tephrosia retamoides | kifafalahy | 
| Acalypha reticulata var. | marompototra | 
| Acalypha reticulata var. | bemangitra, tsangatsanga, vahizato | 
| Acalypha reticulata | bemangitra, marompototra, tsimbaleotra, vahizato | 
| Annona reticulata | hobohobo, keradebefo, voankobohobo | 
| Leptadenia reticulata | vahirontolahy | 
| Potameia reticulata | tavaratra | 
| Psychotria retiphlebia | mahalonify, mahatratranify, voamahatrotraka | 
| Crotalaria retusa | akondrojaza, akondrongolo, ambarivatrindolo, amberivatrindolo, ambiatrindolo, andriambavibe, bosy, diankazolahy, faliakoho, famonoakoho, hintsakintsaka, kinesakinesa, kinsakinsa, kitsakitsanakoho, kitsakitsanankizy, kitsakitsandomohina, mangakely, tsiakondroakondro, tsimembo, tsingirigiry, voapika | 
| Dalbergia retusa | manarizoby | 
| Dicoryphe retusa | maintimpototra | 
| Foetidia retusa | namolana | 
| Molinaea retusa | bejofo, fandrianakanga, felaborona, hazomalany, hazomananjara, hazomanara, maevalafikavavy, maitsoririnina, mampandry, sarimaivalafika, sarinanto, soretra, soritra, soritry, zahambe | 
| Pandaca retusa | antafara, kabokaberavina, kabokala, kabokalavavy, koboka, livoro, lovory, montafara, montafaralahy, morogasy, ravintafara | 
| Ravensara retusa | molaliambo, tavolomadinidravina, tavolomavoravina, tavolopika, tavolopina, tavolosary, tavolotitina | 
| Erythroxylum retusum | menahy, montsao, tambolana | 
| Hypericum revolutum | felantrandraka | 
| Psorospermum revolutum | tambitsy | 
| Begonia rex | beravina | 
| Viscum rhipsaloides | lafitra | 
| Arophyton rhizomatosum | sahanoala, sahonoala | 
| Anthocleista rhizophoroides | dandemo, dandemy, dendemy | 
| Elaeocarpus rhodanthus | vanana, voanana | 
| Cymbidiella rhodochila | tsipelana | 
| Vernonia rhodolepis | kilahimena | 
| Cissus rhodotricha | nonontandraka, nonotandraka, sarivoalombo, tamboromboro, vahiloboka, vahilombo, valombona, voalobokala | 
| Weinmannia rhodoxylon | lalo | 
| Sida rhombifolia | aika, kasindahorina, kisindahorina, kisindahoro, kitsindahoro, sandroky, sindahoro, sindahorona, singahory, tsimaitofangady, tsimatipangady, tsindahoro, tsindahorona, tsindahory | 
| Phyllanthus rhomboidalis | berafitse, karepoka | 
| Plectaneia rhomboidalis | vahintsindy | 
| Triumfetta rhomboidea | besofimanta, besofimbary, besofina, besofinantanana, besofinavavy, hazondambo, kihasinkasina, kisalenjo, maimbolahy, pakamabena, samalahazo, saripaka, sindahorivola, tsidailay, tsindahory, tsindailahy, tsindailay, tsirijy, tsitiamoty | 
| Grewia rhomboides | sely | 
| Asteropeia rhopaloides | manoka, manoko, manokofotsy | 
| Labourdonnaisia richardiana | nanto | 
| Polyalthia richardiana | ambavy, mbavy | 
| Coffea richardii | kafeala, taolanosy | 
| Dalbergia richardii | vahinta | 
| Helmiopsis richardii | hafomena, miriky, sely | 
| Perichlaena richardii | malainkisaraka, tohonambay | 
| Solanum richardii | voabana | 
| Xyloolaena richardii | fakody, fomboatoafo, fotona, mampay, pesoala, sofiakomba, sofinkomba, taimbody, takodibe, tamboro, vahintaimbody, vahintambody, vahitaimbody, vahy, voakoropetaka, voantsatroka | 
| Sparmannia ricinocarpa | hafotra | 
| Agave rigida var. | taretra | 
| Agave rigida | taretra | 
| Dombeya rigida | hafotramena, selifamoty, valoamboka | 
| Ocotea rigidifolia | tafonona, varongifotsy | 
| Senecio riparius | rambiazindahy | 
| Humbertioturraea ripicola | fanazavalahy, fankazava | 
| Chrysalidocarpus rivularis | fariovana | 
| Ravenea rivularis | akoraka, bakaly, gora, gory, ravina | 
| Uapaca rivularis | tapialahy, tapiandrano | 
| Ajuga robusta | anantsingilo, anatsora, kalavolo, mamy, solila, voanjomanga | 
| Coffea robusta | kafe | 
| Eucalyptus robusta | kininina | 
| Ravenea robustior var | kona | 
| Ravenea robustior var. | kono | 
| Ravenea robustior | anivo, bokombio, loharanga, vokabe, vokaky | 
| Cynoglossum rochelia | lelosy, mandraitsiresina, parakinamboa, sarinatsipenala | 
| Eulophiella roempleriana | tsipelana | 
| Pandanus rollotii | fandrana, vakoana | 
| Schizolaena rosea | arina, fotona, vondrozana | 
| Polystachya rosellata | sonjomboay, velonambonihazo | 
| Lomatophyllum roseum | vahondrano | 
| Memecylon roseum | tsimahamasatsokina | 
| Rhynchelytrum roseum | ahitsiriry | 
| Catharanthus roseus var. | maitsoririnina | 
| Catharanthus roseus | arivotambelona, befela, felabaratra, felatanamamba, heladolo, rivotambelona, salotsa, sarita, tonga, tongatse, trongatse, tsimatiririnina, tsingevika, vonenina | 
| Rubus rosifolius | voarohitsaka, voaroimena, voaroitanala | 
| Satyrium rostratum | voatadidy | 
| Podocarpus rostratus | hetatramadinidravina | 
| Pseudocorchorus rostratus | afotraomby, hafotrombilahy, selivato | 
| Pachypodium rosulatum var. | bokalahy | 
| Pachypodium rosulatum var. | salotra, songosonso, tsimondrimondry | 
| Pachypodium rosulatum | bontaka, lomo, manasindahitra, salotra, salotsa, saribotaka, somana, somo, somona, somono, songosonso, tsimondrimondry, tsimondromondro, tsimontsimondry, vontaka, vontakambato, votasitry | 
| Tambourissa rota | ambora, amboramangidy, amboramanitra, amboramenalaingo, amboratsiavoky, amboravato, rota | 
| Cordia rothii | hazonkorova, tandelo, tandelokarany, varokarana, varombazaha | 
| Dombeya rottleroides | hafomena | 
| Macaranga rottleroides | lavatsiho | 
| Dombeya rotunda | alampona, hafotra, hafotravonoa, halampona, vonoa | 
| Cryptocarya rotundifolia | tavoloberavina | 
| Eremolaena rotundifolia | amaninombilahifotsy, fotona, fotonala, fotondahy, menahihivavy | 
| Rhodolaena rotundifolia | voantalanina | 
| Coleus rotundifolius | matambala | 
| Plectranthus rotundifolius | ramifaritra, ranofaritra, voamitra | 
| Baudouinia rouxevillei | manjakabenitany, manjakabetane, mpanjakabenitany | 
| Sorghum roxburghii | ampemby, femba, morama, morona, varifemba | 
| Clerodendrum rubellum | antambalahy, marolahy, maroleha, tambahay, tambahehy, tambahy | 
| Crassocephalum rubens | anadrambo, anandrambo, anandrambolahy, betranomay, fitangosana, maimbobe, tranobemay, valahiaka | 
| Chrysalidocarpus ruber | menamosina | 
| Vernonia rubicunda | tsirambingy | 
| Ficus rubra | nonokamadinidravina | 
| Mascarenhasia rubra | barabanja, barabanjamena, barabanjantanety, gidroamena | 
| Potameia rubra | antavaratra, tavaratra | 
| Rinorea rubra | maimasela, mainasela | 
| Dombeya rubricuspis | hafotra, hafotrafotsy | 
| Capurodendron rubrocostatum | kironono, kirononovavy, nanto, nato, natomadinidravina, natovavy, pirono | 
| Diospyros rubrolanata | hazoary | 
| Adansonia rubrostipa | ringy | 
| Hyparrhenia rufa | fataka, kitsanjy, kolafa, sihy, siky, sy, vero, verofehana, verofotsy, veromena | 
| Aristida rufescens | herombavy, horona, kifafa, korona, pepeka | 
| Capurodendron rufescens | nanto, nantoboronkahaka, nantomadinidravina, tsipatikalalahy, voanantolahy | 
| Raphia ruffia | angarata, bao, beadala, bikoa, felipomby, fiara, fomba, fombanala, fomby, hisadrofia, horojy, hovaka, kiran-drofia, maivanaty, maranabo, mofia, rafia, raofia, riba, rofia, voampiso, voarafia | 
| Elaeocarpus rufovestitus | voanana | 
| Ischaemum rugosum | taimboriky, tsikalabana | 
| Myrica rugulosa | hazondriaka, sorobatana | 
| Lysimachia ruhmeriana | voahangindrano | 
| Helichrysum rusillonii | ahibalala, alamanitra | 
| Gardenia rutenbergiana | ambokombe | 
| Genipa rutenbergiana | karipedahy, kiripedahy, kiripikala | 
| Melothria rutenbergiana | karakarantoloho, karankarantoloho | 
| Zehneria rutenbergiana | karankarantoloho, siramboalavo, voantangomboalavo, voantangontoloho, voatangondolo | 
| Mesanthemum rutenbergianum | fotsivolo, savory, solila | 
| Pachypodium rutenbergianum | bontaka, botaka, vohely, vontaka | 
| Alchemilla rutenbergii | talafoitra | 
| Tetracera rutenbergii | vahitamboho | 
| Weinmannia rutenbergii | hazomana, hazomanga, hazomboangory, hazomena, herehitsika, herekitsika, heretsika, herihitsika, katoto, lalomanga, lalombe, lalomena, lalompotaka, lalompotsy, lalonabe, lalonadrevaka, lalonafotsy, lalonaherehitrika, lalonamanga, lalondahy, lalondrevaka, lalonerehitrika, lalontsihitry, tsokia | 
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