Begonia abbottii- Begonia aberrans
- Begonia acaulis
- Begonia acerifolia
- Begonia acetosa
- Begonia acetosella
- Begonia acida
- Begonia aconitifolia
- Begonia acuminatissima
- Begonia acutifolia
- Begonia acutiloba
- Begonia adenopoda
- Begonia admirabilis
- Begonia adpressa
- Begonia adscendens
- Begonia aequata
- Begonia aequatoguineensis
- Begonia aequatorialis
- Begonia aeranthos
- Begonia affinis
- Begonia afromigrata
- Begonia aggeloptera
- Begonia aguiabrancensis
- Begonia agusanensis
- Begonia alaecida
- Begonia alba
- Begonia albidula
- Begonia albobracteata
- Begonia albococcinea
- Begonia albomaculata
- Begonia albopicta
- Begonia alchemilloides
- Begonia algaia
- Begonia alice-clarkae
- Begonia alice-clarkiae
- Begonia alicida
- Begonia almedana
- Begonia alnifolia
- Begonia altamiroi
- Begonia altissima
- Begonia altoperuviana
- Begonia alvarezii
- Begonia alveolata
- Begonia amoena
- Begonia amphioxus
- Begonia ampla
- Begonia andamensis
- Begonia andina
- Begonia anemoniflora
- Begonia angilogensis
- Begonia angolensis
- Begonia angularis
- Begonia angulata
- Begonia angustilimba
- Begonia angustiloba
- Begonia angustlilimba
- Begonia anisoptera
- Begonia anisosepala
- Begonia ankaranensis
- Begonia annobonensis
- Begonia annulata
- Begonia anodaefolia
- Begonia anthonyi
- Begonia antioquensis
- Begonia antongilensis
- Begonia antonietae
- Begonia antsingyensis
- Begonia antsiranensis
- Begonia apayaoensis
- Begonia apparicioi
- Begonia aptera
- Begonia arborescens
- Begonia archboldiana
- Begonia areolata
- Begonia arfakensis
- Begonia argenteo-guttata
- Begonia argenteomarginata
- Begonia aridicaulis
- Begonia arrogans
- Begonia ascotiensis
- Begonia asperifolia
- Begonia aspleniifolia
- Begonia assurgens
- Begonia asterida
- Begonia asteroides
- Begonia atricha
- Begonia atroglandulosa
- Begonia augustae
- Begonia augustinei
- Begonia auriculata
- Begonia awongii
- Begonia axillaris
- Begonia axillipara
- Begonia azuensis
- Begonia baccata
- Begonia bahiensis
- Begonia bakeri
- Begonia balansae
- Begonia balansana
- Begonia balmisiana
- Begonia banaoensis
- Begonia bangii
- Begonia barahonensis
- Begonia baramensis
- Begonia barbellata
- Begonia barkeri
- Begonia barkleyana
- Begonia baronii
- Begonia barrigae
- Begonia barsalouxii
- Begonia bartlettiana
- Begonia baumannii
- Begonia baviensis
- Begonia beccariana
- Begonia bequaertii
- Begonia berhamanii
- Begonia bernicei
- Begonia bertinii
- Begonia beryllae
- Begonia besleriaefolia
- Begonia besleriifolia
- Begonia betsimisaraka
- Begonia bettinae
- Begonia bidentata
- Begonia bifolia
- Begonia bifurcata
- Begonia biguassuensis
- Begonia biliranensis
- Begonia binuangensis
- Begonia biolleyi
- Begonia bipinnatifida
- Begonia biserrata
- Begonia bismarcki
- Begonia bissei
- Begonia bogneri
- Begonia boisiana
- Begonia boissieri
- Begonia boiviniana
- Begonia boliviensis
- Begonia bolleana
- Begonia bolsteri
- Begonia bonii
- Begonia bonitoensis
- Begonia bonthainensis
- Begonia bonus-henricus
- Begonia boraceiensis
- Begonia borneensis
- Begonia bosseri
- Begonia boucheana
- Begonia bowerae
- Begonia boweri
- Begonia brachybotrys
- Begonia brachyclada
- Begonia brachypoda
- Begonia bracteata
- Begonia bracteosa
- Begonia bradei
- Begonia brandbygeana
- Begonia brandisiana
- Begonia brandygeana
- Begonia brassii
- Begonia breedlovei
- Begonia brevibracteata
- Begonia brevicordata
- Begonia brevipes
- Begonia brevipetala
- Begonia brevirimosa
- Begonia bridgesii
- Begonia buchtienii
- Begonia buddleiaefolia
- Begonia buddleiifolia
- Begonia bufoderma
- Begonia buimontana
- Begonia bulbillifera
- Begonia bullata
- Begonia burbidgei
- Begonia buseyi
- Begonia cacauicola
- Begonia calcicola
- Begonia calderonii
- Begonia calliantha
- Begonia calophylla
- Begonia campanensis
- Begonia camposportoana
- Begonia canarana
- Begonia candollei
- Begonia capanemae
- Begonia capensis
- Begonia capillipes
- Begonia capituliformis
- Begonia caraguatatubensis
- Begonia cardiocarpa
- Begonia carletonii
- Begonia carolineifolia
- Begonia caroliniaefolia
- Begonia caroliniifolia
- Begonia carpinifolia
- Begonia carrieae
- Begonia casiguranensis
- Begonia castaneifolia
- Begonia castilloi
- Begonia catharinensis
- Begonia cathayana
- Begonia cathcartii
- Begonia caudata
- Begonia cauliflora
- Begonia cavallyensis
- Begonia cavum
- Begonia cebadillensis
- Begonia celebica
- Begonia cerasiphylla
- Begonia chaetocarpa
- Begonia chaiana
- Begonia chakensis
- Begonia cheimantha
- Begonia chiapensis
- Begonia chiasmogyna
- Begonia chingii
- Begonia chitoensis
- Begonia chivatoa
- Begonia chlorocarpa
- Begonia chlorolepis
- Begonia chloroneura
- Begonia chlorosticta
- Begonia chuniana
- Begonia ciliifera
- Begonia ciliobracteata
- Begonia cinnabarina
- Begonia circumlobata
- Begonia cladocarpoides
- Begonia clarkei
- Begonia clavicaulis
- Begonia clypeifolia
- Begonia coccinea
- Begonia cognata
- Begonia collaris
- Begonia collisiae
- Begonia colombiana
- Begonia colorata
- Begonia comata
- Begonia comorensis
- Begonia concanensis
- Begonia conchifolia
- Begonia concinna
- Begonia confinis
- Begonia confusa
- Begonia congesta
- Begonia conipila
- Begonia consobrina
- Begonia contracta
- Begonia convallariodora
- Begonia convalliodora
- Begonia convolvulacea
- Begonia cooperi
- Begonia copelandii
- Begonia copeyana
- Begonia cordifolia
- Begonia coriacea
- Begonia cornitepala
- Begonia cornuta
- Begonia coronata
- Begonia coronensis
- Begonia corredorana
- Begonia corrugata
- Begonia corzoensis
- Begonia coursii
- Begonia cowellii
- Begonia crassicaulis
- Begonia crateris
- Begonia credneri
- Begonia cremnophila
- Begonia crenata
- Begonia crenatifolia
- Begonia crinita
- Begonia crispipila
- Begonia crispula
- Begonia cristobalensis
- Begonia croatii
- Begonia cryptocarpa
- Begonia cuatrecasana
- Begonia cuatrecasasiana
- Begonia cuatrecasiana
- Begonia cubensis
- Begonia cucullata
- Begonia cuernavacensis
- Begonia cumingiana
- Begonia cumingii
- Begonia cuneatifolia
- Begonia curtii
- Begonia cuspidata
- Begonia cyanescens
- Begonia cyathophora
- Begonia cylindrata
- Begonia cymbalifera
- Begonia davidsoniae
- Begonia davisii
- Begonia dealbata
- Begonia decandra
- Begonia decora
- Begonia deliciosa
- Begonia demissa
- Begonia densifolia
- Begonia dentatiloba
- Begonia dentatobracteata
- Begonia denticulata
- Begonia depauperata
- Begonia descoleana
- Begonia dewildei
- Begonia diadema
- Begonia diaphones
- Begonia dichotoma
- Begonia dielsiana
- Begonia dietrichiana
- Begonia diffusa
- Begonia digitata
- Begonia digyna
- Begonia dioica
- Begonia dipetala
- Begonia discrepans
- Begonia discreta
- Begonia divaricata
- Begonia diversistipulata
- Begonia djamuensis
- Begonia dodsonii
- Begonia dolichotricha
- Begonia domingensis
- Begonia dregei
- Begonia dressleri
- Begonia dryadis
- Begonia dugandiana
- Begonia duncan-thomasii
- Begonia dux
- Begonia eberhardtii
- Begonia ebolowensis
- Begonia echinosepala
- Begonia edanoi
- Begonia edmundoi
- Begonia edulis
- Begonia egregia
- Begonia elaeagnifolia
- Begonia elatostematoides
- Begonia elatostemmoides
- Begonia elianeae
- Begonia eliassii
- Begonia elisabethae
- Begonia elmeri
- Begonia eminii
- Begonia engleri
- Begonia epibaterium
- Begonia epipsila
- Begonia erectocaulis
- Begonia erectotricha
- Begonia erminea
- Begonia erythrocarpa
- Begonia erythrophylla
- Begonia esculenta
- Begonia estrellensis
- Begonia euryphylla
- Begonia eutricha
- Begonia everettii
- Begonia exalata
- Begonia exigua
- Begonia exilis
- Begonia extensa
- Begonia extranea
- Begonia fagifolia
- Begonia falcifolia
- Begonia falciloba
- Begonia fasciculiflora
- Begonia faustinoi
- Begonia fellereriana
- Begonia fenicis
- Begonia fernaldiana
- Begonia fernandocostae
- Begonia fernandoi-costae
- Begonia ferramica
- Begonia ferruginea
- Begonia fibrosa
- Begonia fiebrigii
- Begonia filibracteosa
- Begonia filiformis
- Begonia fimbriata
- Begonia fimbristipula
- Begonia fischeri
- Begonia fissistyla
- Begonia flacca
- Begonia flaviflora
- Begonia flexicaulis
- Begonia floccifera
- Begonia fluminensis
- Begonia foliosa
- Begonia forbesii
- Begonia formosana
- Begonia formosissima
- Begonia forrestii
- Begonia foveolata
- Begonia foxworthyi
- Begonia francisii
- Begonia francoisii
- Begonia friburgensis
- Begonia froebelii
- Begonia frutecella
- Begonia fruticosa
- Begonia fuchsiiflora
- Begonia fuchsioides
- Begonia fulvosetulosa
- Begonia fulvovillosa
- Begonia furfuracea
- Begonia fusca
- Begonia fuscicaulis
- Begonia fuscisetosa
- Begonia fuscomaculata
- Begonia fusialata
- Begonia fusibulba
- Begonia fusicarpa
- Begonia gabonensis
- Begonia gagnepainiana
- Begonia gamolepis
- Begonia garagarana
- Begonia gardneri
- Begonia garrettii
- Begonia garuvae
- Begonia gaudichaudii
- Begonia gehrtii
- Begonia gemella
- Begonia geminiflora
- Begonia gemmipara
- Begonia geraniifolia
- Begonia geranioides
- Begonia gesnerioides
- Begonia gigantea
- Begonia gitingensis
- Begonia glaberrima
- Begonia glabra
- Begonia glabricaulis
- Begonia glandulifera
- Begonia glandulosa
- Begonia glauca
- Begonia goegoensis
- Begonia goldingiana
- Begonia gossweileri
- Begonia goudotii
- Begonia gracilior
- Begonia gracilipes
- Begonia gracilis
- Begonia grandipetala
- Begonia grandis
- Begonia grantiana
- Begonia grewiaefolia
- Begonia griffithiana
- Begonia grisea
- Begonia guadensis
- Begonia guaduensis
- Begonia gueritziana
- Begonia gungshanensis
- Begonia halconensis
- Begonia handelii
- Begonia handroi
- Begonia harlingii
- Begonia hatacoa
- Begonia hayatae
- Begonia heliantha
- Begonia heliostrophe
- Begonia hemsleyana
- Begonia henryi
- Begonia heracleicotyle
- Begonia heracleifolia
- Begonia herbacea
- Begonia heringeri
- Begonia hernandioides
- Begonia herteri
- Begonia heterochroma
- Begonia heteroclinis
- Begonia heterodanta
- Begonia hexandra
- Begonia heydei
- Begonia hieronymi
- Begonia hilariana
- Begonia hintoniana
- Begonia hirsuta
- Begonia hirsuticaulis
- Begonia hirsutula
- Begonia hirta
- Begonia hirtella
- Begonia hispida
- Begonia hispidavillosa
- Begonia hispidissima
- Begonia hispidivillosa
- Begonia hitchcockii
- Begonia hoehneana
- Begonia holmnielseniana
- Begonia holtonis
- Begonia holttumii
- Begonia homonyma
- Begonia hondurensis
- Begonia hookeriana
- Begonia hortensis
- Begonia horticola
- Begonia houttuynioides
- Begonia hubertii
- Begonia huegelii
- Begonia hugelii
- Begonia humbertii
- Begonia humboldtiana
- Begonia humericola
- Begonia humilicaulis
- Begonia humilis
- Begonia humillima
- Begonia hydrocotylifolia
- Begonia hydrophylloides
- Begonia ignea
- Begonia ignorata
- Begonia imbricata
- Begonia imitans
- Begonia imperfecta
- Begonia imperialis
- Begonia incarnata
- Begonia incerta
- Begonia incisa
- Begonia incisoserrata
- Begonia incondita
- Begonia inculta
- Begonia inostegia
- Begonia insularis
- Begonia insularum
- Begonia integerrima
- Begonia integrifolia
- Begonia inversa
- Begonia involucrata
- Begonia ionophylla
- Begonia irmscheri
- Begonia isabelensis
- Begonia isoptera
- Begonia isopterocarpa
- Begonia isopteroidea
- Begonia itaguassuensis
- Begonia itapavensis
- Begonia itatiaiensis
- Begonia itatinensis
- Begonia itupavensis
- Begonia iucunda
- Begonia jagorii
- Begonia jaliscana
- Begonia jamaicensis
- Begonia jayaensis
- Begonia jenmanii
- Begonia jocelinoi
- Begonia johnstonii
- Begonia josephi
- Begonia juliana
- Begonia juninensis
- Begonia juntasensis
- Begonia kalabenonensis
- Begonia kalbreyeri
- Begonia kaniensis
- Begonia karperi
- Begonia karwinskyana
- Begonia keeana
- Begonia keithii
- Begonia kelliana
- Begonia keniensis
- Begonia kenworthyae
- Begonia kenworthyi
- Begonia keraudreniae
- Begonia kerrii
- Begonia kerstingii
- Begonia kiamfeei
- Begonia killipiana
- Begonia kinabaluensis
- Begonia kingiana
- Begonia kisuluana
- Begonia klemmei
- Begonia klydophylla
- Begonia knoopii
- Begonia komoensis
- Begonia konderreisiana
- Begonia koordersii
- Begonia kortsiae
- Begonia kuhlmannii
- Begonia kunthiana
- Begonia labomaculata
- Begonia labordei
- Begonia lacerata
- Begonia lachaoensis
- Begonia lacunosa
- Begonia laetvirides
- Begonia laevis
- Begonia lagunensis
- Begonia lambii
- Begonia lanceolata
- Begonia lancifolia
- Begonia lancilimba
- Begonia langbianensis
- Begonia langeana
- Begonia lanstyakii
- Begonia lantaniaefolia
- Begonia laporteifolia
- Begonia larorum
- Begonia latistipula
- Begonia lauterbachii
- Begonia laxa
- Begonia lealii
- Begonia leathermaniae
- Begonia ledermannii
- Begonia lehmannii
- Begonia lengguanii
- Begonia lepida
- Begonia lepidella
- Begonia leprosa
- Begonia leptantha
- Begonia leptostyla
- Begonia letestui
- Begonia letouzeyi
- Begonia leuconeura
- Begonia leucosticta
- Begonia libanensis
- Begonia libera
- Begonia lignescens
- Begonia limprichtii
- Begonia lindleyana
- Begonia lindmanii
- Begonia lineolata
- Begonia lipingensis
- Begonia lipolepis
- Begonia listada
- Begonia lithophila
- Begonia littleri
- Begonia loheri
- Begonia lomensis
- Begonia longepetiolata
- Begonia longibarbata
- Begonia longibracteata
- Begonia longicaulis
- Begonia longifolia
- Begonia longimaculata
- Begonia longipetiolata
- Begonia longirostris
- Begonia longiscapa
- Begonia longistipula
- Begonia lopensis
- Begonia lophoptera
- Begonia loranthoides
- Begonia louis-williamsii
- Begonia lowiana
- Begonia lubbersii
- Begonia lucifuga
- Begonia ludicra
- Begonia ludwigii
- Begonia lugonis
- Begonia lunaris
- Begonia lutea
- Begonia luxii
- Begonia luxurians
- Begonia luzonensis
- Begonia lyallii
- Begonia lyman-smithii
- Begonia macduffieana
- Begonia macgregorii
- Begonia machrisiana
- Begonia macintyreana
- Begonia macra
- Begonia macrocarpa
- Begonia maculata
- Begonia macvaughii
- Begonia madecassa
- Begonia maestrensis
- Begonia magdalenae
- Begonia majungaensis
- Begonia malabarica
- Begonia malachosticta
- Begonia malindangensis
- Begonia malmquistiana
- Begonia mananjebensis
- Begonia mangorensis
- Begonia manicata
- Begonia manillensis
- Begonia mannii
- Begonia margaritae
- Begonia mariae
- Begonia mariannensis
- Begonia marinae
- Begonia marojejyensis
- Begonia martabanica
- Begonia masarangensis
- Begonia masoniana
- Begonia matogrossensis
- Begonia mattos-silvae
- Begonia maurandiae
- Begonia maxima
- Begonia maxwelliana
- Begonia mayasiana
- Begonia maynensis
- Begonia mazae
- Begonia mbangaensis
- Begonia mearnsii
- Begonia media
- Begonia medusorrhiza
- Begonia megacarpa
- Begonia megalantha
- Begonia megaptera
- Begonia mekonggensis
- Begonia melikopia
- Begonia membranacea
- Begonia mengtzeana
- Begonia meridensis
- Begonia merrittii
- Begonia mexicana
- Begonia meyeri-johannis
- Begonia michoacana
- Begonia micranthera
- Begonia microcarpa
- Begonia microphylla
- Begonia microsperma
- Begonia mildbraedii
- Begonia militaris
- Begonia mindanaensis
- Begonia mindorensis
- Begonia minicarpa
- Begonia minor
- Begonia minuta
- Begonia minutifolia
- Begonia miranda
- Begonia modestiflora
- Begonia molinana
- Begonia molleri
- Begonia mollicaulis
- Begonia mollis
- Begonia monadelpha
- Begonia monantha
- Begonia monophylla
- Begonia montana
- Begonia montis-bismarckii
- Begonia montis-elephantis
- Begonia mooreana
- Begonia morifolia
- Begonia morii
- Begonia moszkowskii
- Begonia motozintlensis
- Begonia mucronistipula
- Begonia multangula
- Begonia multidentata
- Begonia multinervia
- Begonia multistaminea
- Begonia muricata
- Begonia murina
- Begonia mystacina
- Begonia nana
- Begonia napoensis
- Begonia naumoniensis
- Begonia neglecta
- Begonia negrosensis
- Begonia nelumbiifolia
- Begonia nemoralis
- Begonia neocomensium
- Begonia neoharlingii
- Begonia neopurpurea
- Begonia nepalensis
- Begonia nevadensis
- Begonia niahensis
- Begonia nigritarum
- Begonia nivea
- Begonia nossibea
- Begonia notiophila
- Begonia novalombardiensis
- Begonia novogranatae
- Begonia novoguineensis
- Begonia nubicola
- Begonia nuda
- Begonia nurii
- Begonia nymphaeifolia
- Begonia oaxacana
- Begonia obdeltata
- Begonia oblanceolata
- Begonia obliqua
- Begonia oblongata
- Begonia oblongifolia
- Begonia obovatistipula
- Begonia obovoidea
- Begonia obscura
- Begonia obsolescens
- Begonia obtecticaulis
- Begonia obtusifolia
- Begonia occhionii
- Begonia octopetala
- Begonia odeteiantha
- Begonia oellgaardii
- Begonia olbia
- Begonia oligandra
- Begonia oligantha
- Begonia oligocarpa
- Begonia oliveri
- Begonia olsoniae
- Begonia ophiogyna
- Begonia opuliflora
- Begonia organensis
- Begonia ornithocarpa
- Begonia otophylla
- Begonia ovatifolia
- Begonia oxyanthera
- Begonia oxyloba
- Begonia oxysperma
- Begonia palawanensis
- Begonia paleata
- Begonia palmata
- Begonia palmeri
- Begonia panayensis
- Begonia panchtharensis
- Begonia paoana
- Begonia papuana
- Begonia paranaensis
- Begonia parcifolia
- Begonia parilis
- Begonia parodiana
- Begonia parva
- Begonia parviflora
- Begonia parvifolia
- Begonia parvilimba
- Begonia parvistipulata
- Begonia parvula
- Begonia parvuliflora
- Begonia pastoensis
- Begonia paulensis
- Begonia pavonina
- Begonia pearcei
- Begonia pectennervia
- Begonia pedata
- Begonia pedatifida
- Begonia pediophylla
- Begonia pedunculosa
- Begonia peekelii
- Begonia peltata
- Begonia peltatifolia
- Begonia peltifolia
- Begonia peltigera
- Begonia pendula
- Begonia pennellii
- Begonia penrissenensis
- Begonia pensilis
- Begonia pentaphragmifolia
- Begonia pentaphylla
- Begonia peperomioides
- Begonia per-dusenii
- Begonia perakensis
- Begonia pernambucensis
- Begonia perpusilla
- Begonia peruviana
- Begonia petasitifolia
- Begonia philodendroides
- Begonia phoeniogramma
- Begonia phyllomaniaca
- Begonia physandra
- Begonia pickelii
- Begonia picta
- Begonia pilderifolia
- Begonia pilgeriana
- Begonia pilosella
- Begonia pinetorum
- Begonia pinheironis
- Begonia pinnatifida
- Begonia piresiana
- Begonia piurensis
- Begonia plantaginea
- Begonia plantanifolia
- Begonia platanifolia
- Begonia platyphylla
- Begonia platyptera
- Begonia plebeia
- Begonia pleiopetala
- Begonia plumieri
- Begonia pluvialis
- Begonia poculifera
- Begonia polilloensis
- Begonia polyandra
- Begonia polygonata
- Begonia polygonifolia
- Begonia polygonoides
- Begonia polypetala
- Begonia popenoei
- Begonia porteri
- Begonia portillana
- Begonia postarii
- Begonia potamophila
- Begonia praerupta
- Begonia prestoniensis
- Begonia preussii
- Begonia prieurii
- Begonia princeae
- Begonia princeps
- Begonia pringlei
- Begonia prionophylla
- Begonia prismatocarpa
- Begonia procridifolia
- Begonia prolifera
- Begonia prolixa
- Begonia pruinata
- Begonia pryeriana
- Begonia pseudolateralis
- Begonia pseudolubbersii
- Begonia pseudophyllomaniaca
- Begonia pseudopleiopetala
- Begonia pseudoviola
- Begonia psilophylla
- Begonia puberula
- Begonia pubescens
- Begonia pudica
- Begonia pulchella
- Begonia pulcherrima
- Begonia pulchra
- Begonia pululahuana
- Begonia pumila
- Begonia pumilio
- Begonia punchak
- Begonia purpurea
- Begonia purpusii
- Begonia pustulata
- Begonia puttii
- Begonia pycnantha
- Begonia pyknocaulis
- Begonia pyrrha
- Begonia quadrialata
- Begonia quaternata
- Begonia quercifolia
- Begonia rabilii
- Begonia rachmatii
- Begonia radicans
- Begonia rafael-torresii
- Begonia raimondii
- Begonia rajah
- Begonia ramentacea
- Begonia ramicola
- Begonia ramosii
- Begonia randiana
- Begonia ravenii
- Begonia razafinjohanyi
- Begonia reichenheimii
- Begonia relicta
- Begonia renifolia
- Begonia reniformis
- Begonia repenticaulis
- Begonia reptans
- Begonia retusa
- Begonia rex
- Begonia rheifolia
- Begonia rhizocaulis
- Begonia rhodantha
- Begonia rhodochlamys
- Begonia rhodophylla
- Begonia rhoephila
- Begonia ricinifolia
- Begonia rieckei
- Begonia riedelii
- Begonia rigida
- Begonia rimarum
- Begonia riparia
- Begonia rizalensis
- Begonia robusta
- Begonia rockii
- Begonia roezlii
- Begonia rosacea
- Begonia rosibractea
- Begonia rossmanniae
- Begonia rostrata
- Begonia rotundifolia
- Begonia roxburghii
- Begonia rubella
- Begonia rubiginosipes
- Begonia rubricaulis
- Begonia rubriflora
- Begonia rubrifolia
- Begonia rubromarginata
- Begonia rubronervata
- Begonia rubropilosa
- Begonia rubrotincta
- Begonia rufa
- Begonia rufipila
- Begonia rufosericea
- Begonia ruhlandiana
- Begonia rumpiensis
- Begonia russelliana
- Begonia rutilans
- Begonia rwandensis
- Begonia salaziensis
- Begonia salisburyana
- Begonia salvadorensis
- Begonia samarensis
- Begonia sandalifolia
- Begonia sandtii
- Begonia sanguinea
- Begonia santarosensis
- Begonia santos-limae
- Begonia sarasinorum
- Begonia sarawakensis
- Begonia sarmentosa
- Begonia sartorii
- Begonia satrapis
- Begonia saxicola
- Begonia saxifraga
- Begonia saxifragifolia
- Begonia scabrida
- Begonia scapigera
- Begonia schaeferi
- Begonia scharffii
- Begonia schenkii
- Begonia schliebenii
- Begonia schultzei
- Begonia schulziana
- Begonia sciadiophora
- Begonia sciaphila
- Begonia scortechinii
- Begonia scottii
- Begonia scutifolia
- Begonia scutulum
- Begonia secunda
- Begonia seemanniana
- Begonia segregata
- Begonia semidigitata
- Begonia semiovata
- Begonia semperflorens-cultorum
- Begonia sericoneura
- Begonia serotina
- Begonia serpens
- Begonia serranegrae
- Begonia serratipetala
- Begonia sessilifolia
- Begonia setifolia
- Begonia setulosa
- Begonia seychellensis
- Begonia sharpeana
- Begonia siamensis
- Begonia siccacaudata
- Begonia sikkimensis
- Begonia silletensis
- Begonia silverstonei
- Begonia simulans
- Begonia sinuata
- Begonia sizemoreae
- Begonia skutchii
- Begonia sleumeri
- Begonia smilacina
- Begonia smithiae
- Begonia smithiana
- Begonia smithii
- Begonia socia
- Begonia socotrana
- Begonia sodiroi
- Begonia sogerensis
- Begonia sogeriensis
- Begonia solananthera
- Begonia solimutata
- Begonia solitudinis
- Begonia soluta
- Begonia somervillei
- Begonia sonderana
- Begonia sonderiana
- Begonia sootepensis
- Begonia soror
- Begonia sorsogonensis
- Begonia sosefiana
- Begonia sousae
- Begonia spadiciflora
- Begonia sparreana
- Begonia sparsipila
- Begonia spathulata
- Begonia speluncae
- Begonia sphenocarpa
- Begonia spilotophylla
- Begonia squamipes
- Begonia squamulosa
- Begonia squarrosa
- Begonia staudtii
- Begonia stellata
- Begonia stenocardia
- Begonia stenogyna
- Begonia stenolepis
- Begonia stenophylla
- Begonia stenotepala
- Begonia steyermarkii
- Begonia stictopoda
- Begonia stigmosa
- Begonia stilandra
- Begonia stipularis
- Begonia stolzii
- Begonia strachwitzii
- Begonia strictinervis
- Begonia strictipetiolaris
- Begonia strigillosa
- Begonia strigosa
- Begonia subacida
- Begonia subalpestris
- Begonia subcaudata
- Begonia subciliata
- Begonia subcordata
- Begonia subcostata
- Begonia subcyclophylla
- Begonia subelliptica
- Begonia subnummularifolia
- Begonia suborbiculata
- Begonia subperfoliata
- Begonia subprostrata
- Begonia subscutata
- Begonia subspinulosa
- Begonia subvillosa
- Begonia succulenta
- Begonia sudjanae
- Begonia suffrutescens
- Begonia sumbawaensis
- Begonia suprafastigiata
- Begonia susaniae
- Begonia sutherlandii
- Begonia sychnantha
- Begonia sylvatica
- Begonia sylvestris
- Begonia symbeccarii
- Begonia symbracteosa
- Begonia symgeraniifolia
- Begonia symhirta
- Begonia sympapuana
- Begonia symparvifolia
- Begonia symsanguinea
- Begonia tacana
- Begonia tafaensis
- Begonia tafiensis
- Begonia taiwaniana
- Begonia taliensis
- Begonia tapatia
- Begonia tawaensis
- Begonia tayabensis
- Begonia tayloriae
- Begonia tayloriana
- Begonia tenera
- Begonia tenuifolia
- Begonia tetrandra
- Begonia teuscheri
- Begonia teysmanniana
- Begonia thaipingensis
- Begonia thaspingensis
- Begonia thelmae
- Begonia thiemei
- Begonia thomeana
- Begonia thomsonii
- Begonia thyrsoidea
- Begonia thyrsoides
- Begonia tiliifolia
- Begonia tlapensis
- Begonia toledana
- Begonia toledoana
- Begonia tomentosa
- Begonia tonduzii
- Begonia tonkinensis
- Begonia torricellensis
- Begonia tovarensis
- Begonia trianae
- Begonia tribracteata
- Begonia trichocarpa
- Begonia trichochila
- Begonia trichosepala
- Begonia trigonocarpa
- Begonia triramosa
- Begonia trispathulata
- Begonia tropaeolifolia
- Begonia trujillensis
- Begonia trullaefolia
- Begonia truncicola
- Begonia tsaii
- Begonia tuberhybrida
- Begonia tumbezensis
- Begonia turbinata
- Begonia turrialbae
- Begonia udisilvestris
- Begonia ulmifolia
- Begonia umbellata
- Begonia umbraculifera
- Begonia unduavensis
- Begonia undulata
- Begonia unialata
- Begonia uniflora
- Begonia unilateralis
- Begonia urdanetensis
- Begonia urophylla
- Begonia ursina
- Begonia urticae
- Begonia uruapensis
- Begonia urubambensis
- Begonia vagans
- Begonia valdensium
- Begonia valerii
- Begonia valida
- Begonia valvata
- Begonia vankerckhovenii
- Begonia vanoverberghii
- Begonia vareschii
- Begonia variabilis
- Begonia varistyla
- Begonia varistyle
- Begonia veitchii
- Begonia velata
- Begonia velloziana
- Begonia venosa
- Begonia venusta
- Begonia vermeulenii
- Begonia verruculosa
- Begonia verschaffeltii
- Begonia versicolor
- Begonia vestita
- Begonia viaudii
- Begonia vicina
- Begonia villifolia
- Begonia vincentina
- Begonia violaefolia
- Begonia violifolia
- Begonia viridiflora
- Begonia viscida
- Begonia vitiensis
- Begonia vittariifolia
- Begonia vuijckii
- Begonia wadei
- Begonia wageneriana
- Begonia wagneriana
- Begonia wakefieldii
- Begonia wallichiana
- Begonia warburgii
- Begonia wariana
- Begonia wasshauseniana
- Begonia watuwilensis
- Begonia weberbaueri
- Begonia weberlingii
- Begonia weddeliana
- Begonia weigallii
- Begonia weltoniensis
- Begonia wenzelii
- Begonia wilksii
- Begonia wilsonii
- Begonia windischii
- Begonia wollastonii
- Begonia wollnyi
- Begonia woodii
- Begonia wrayi
- Begonia wrightiana
- Begonia wurdackii
- Begonia xanthina
- Begonia xerophyta
- Begonia xiphophylla
- Begonia xylopoda
- Begonia ynesiae
- Begonia yui
- Begonia yunckeri
- Begonia yunnanensis
- Begonia zairensis
- Begonia zamboangensis
- Begonia zenkeriana
- Begonia zollingeriana