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Organism
  Plantae
      Tracheophyta
            Magnoliopsida
                    Gentianales
                            Rubiaceae
                                     Adenorandia
                                             Adenorandia kalbreyeri
                                                   [Pseudogardenia kalbreyeri]
                                     Afrocanthium
                                     Agathisanthemum
                                             Agathisanthemum globosum
                                     Aidia
                                             Aidia micrantha
                                               Aidia micrantha var. congolana
                                               Aidia micrantha var. micrantha
                                               Aidia micrantha var. zenkeri
                                             Aidia ochroleuca
                                             Aidia rubens
                                     Anthospermum
                                     Aoranthe
                                             Aoranthe annulata
                                                   [Porterandia annulata]
                                             Aoranthe castaneofulva
                                             Aoranthe cladantha
                                                   [Porterandia cladantha]
                                     Argocoffea
                                     Argocoffeopsis
                                             Argocoffeopsis afzelii
                                                   [Coffea afzelii]
                                             Argocoffeopsis eketensis
                                                   [Coffea eketensis]
                                             Argocoffeopsis pulchella
                                             Argocoffeopsis scandens
                                             Argocoffeopsis subcordata
                                                   [Argocoffea subcordata]
                                     Argostemma
                                             Argostemma africanum
                                             Argostemma pumilum
                                     Atractogyne
                                             Atractogyne bracteata
                                             Atractogyne gabonii
                                     Aulacocalyx
                                             Aulacocalyx caudata
                                             Aulacocalyx jasminiflora
                                               Aulacocalyx jasminiflora subsp. jasminiflora
                                             Aulacocalyx lujae
                                             Aulacocalyx pallens
                                               Aulacocalyx pallens subsp. letestui
                                                     [Dorothea letestui]
                                             Aulacocalyx subulata
                                               Aulacocalyx subulata subsp. glabra
                                               Aulacocalyx subulata subsp. subulata
                                             Aulacocalyx talbotii
                                     Belonophora
                                             Belonophora coffeoides
                                               Belonophora coffeoides subsp. hypoglauca
                                                     [Belonophora hypoglauca]
                                             Belonophora coriacea
                                             Belonophora ongensis
                                             Belonophora talbotii
                                     Bertiera
                                             Bertiera adamsii
                                             Bertiera aequatorialis
                                             Bertiera aethiopica
                                             Bertiera arctistipula
                                             Bertiera batesii
                                             Bertiera bicarpellata
                                             Bertiera bracteolata
                                             Bertiera breviflora
                                             Bertiera congolana
                                             Bertiera elabensis
                                             Bertiera globiceps
                                             Bertiera heterophylla
                                             Bertiera iturensis
                                             Bertiera lanx
                                             Bertiera laxa
                                               Bertiera laxa var. laxa
                                             Bertiera lejolyana
                                             Bertiera letouzeyi
                                             Bertiera loraria
                                             Bertiera lujae
                                             Bertiera naucleoides
                                                   [Bertiera capitata]
                                             Bertiera orthopetala
                                             Bertiera racemosa
                                                   [Bertiera macrocarpa]
                                               Bertiera racemosa var. elephantina
                                               Bertiera racemosa var. racemosa
                                             Bertiera retrofracta
                                             Bertiera sphaerica
                                             Bertiera subsessilis
                                             Bertiera thollonii
                                     Borreria
                                     Brenania
                                             Brenania brieyi
                                                   [Randia walkeri]
                                     Calochone
                                             Calochone acuminata
                                             Calochone redingii
                                     Calycosiphonia
                                             Calycosiphonia macrochlamys
                                             Calycosiphonia spathicalyx
                                     Canthium
                                     Cephaelis
                                     Chassalia
                                             Chassalia carvalhoi
                                             Chassalia chrysoclada
                                             Chassalia corallifera
                                             Chassalia cristata
                                             Chassalia elongata
                                             Chassalia ischnophylla
                                                   [Psychotria ischnophylla]
                                             Chassalia lutescens
                                             Chassalia macrodiscus
                                             Chassalia petitiana
                                             Chassalia pleuroneura
                                             Chassalia pteropetala
                                             Chassalia subcordatifolia
                                             Chassalia subherbacea
                                             Chassalia subnuda
                                             Chassalia tchibangensis
                                             Chassalia vanderystii
                                             Chassalia zenkeri
                                     Chazaliella
                                             Chazaliella anacamptopus
                                                   [Chazaliella domatiicola]
                                                   [Margaritopsis domatiicola]
                                             Chazaliella coffeosperma
                                                   [Margaritopsis coffeosperma]
                                               Chazaliella coffeosperma subsp. coffeosperma
                                             Chazaliella gossweileri
                                             Chazaliella letouzeyi
                                             Chazaliella longistylis
                                                   [Margaritopsis longistylis]
                                             Chazaliella macrocarpa
                                                   [Margaritopsis macrocarpa]
                                             Chazaliella obovoidea
                                               Chazaliella obovoidea subsp. villosistipula
                                             Chazaliella oddonii
                                                   [Margaritopsis oddonii]
                                               Chazaliella oddonii var. cameroonensis
                                             Chazaliella parviflora
                                             Chazaliella sciadephora
                                                   [Margaritopsis sciadephora]
                                             Chazaliella viridicalyx
                                                   [Margaritopsis viridicalyx]
                                     Coffea
                                             Coffea anthonyi
                                             Coffea arabica
                                             Coffea brevipes
                                             Coffea canephora
                                             Coffea lebruniana
                                                   [Psilanthus lebrunianus]
                                             Coffea liberica
                                               Coffea liberica var. dewevrei
                                                     [Coffea excelsa]
                                             Coffea magnistipula
                                             Coffea mannii
                                                   [Psilanthus mannii]
                                             Coffea mayombensis
                                     Coleactina
                                     Colletoecema
                                             Colletoecema gabonensis
                                     Commitheca
                                             Commitheca letestuana
                                     Corynanthe
                                             Corynanthe johimbe
                                                   [Pausinystalia johimbe]
                                             Corynanthe lane-poolei
                                                   [Pausinystalia lane-poolei]
                                               Corynanthe lane-poolei subsp. ituriense
                                                     [Pausinystalia lane-poolei subsp. ituriense]
                                             Corynanthe macroceras
                                                   [Pausinystalia macroceras var. bequaertii]
                                                   [Pausinystalia macroceras]
                                             Corynanthe mayumbensis
                                             Corynanthe pachyceras
                                             Corynanthe paniculata
                                             Corynanthe talbotii
                                                   [Pausinystalia talbotii]
                                     Craterispermum
                                             Craterispermum caudatum
                                             Craterispermum cerinanthum
                                             Craterispermum deblockianum
                                             Craterispermum gabonicum
                                             Craterispermum inquisitorium
                                               Craterispermum inquisitorium var. longipedunculatum
                                             Craterispermum laurinum
                                             Craterispermum ledermannii
                                             Craterispermum parvifolium
                                             Craterispermum robbrechtianum
                                             Craterispermum schweinfurthii
                                             Craterispermum sonkeanum
                                     Cremaspora
                                             Cremaspora thomsonii
                                             Cremaspora triflora
                                               Cremaspora triflora subsp. triflora
                                     Crossopteryx
                                             Crossopteryx febrifuga
                                     Cuviera
                                             Cuviera acutiflora
                                             Cuviera angolensis
                                               Cuviera angolensis subsp. latior
                                                     [Cuviera latior var. evorombila]
                                                     [Cuviera latior]
                                             Cuviera calycosa
                                             Cuviera le-testui
                                             Cuviera longiflora
                                             Cuviera nigrescens
                                                   [Cuviera minor]
                                             Cuviera physinodes
                                             Cuviera pierrei
                                             Cuviera subuliflora
                                     Dictyandra
                                     Didymosalpinx
                                             Didymosalpinx abbeokutae
                                             Didymosalpinx konguensis
                                             Didymosalpinx lanciloba
                                     Diodella
                                     Diodia
                                             Diodia rubricosa
                                     Ecpoma
                                     Edrastima
                                             Edrastima angolensis
                                                   [Oldenlandia angolensis]
                                             Edrastima goreensis
                                                   [Oldenlandia goreensis]
                                     Empogona
                                             Empogona bequaertii
                                                   [Tricalysia bequaertii]
                                             Empogona breteleri
                                                   [Tricalysia breteleri]
                                             Empogona concolor
                                                   [Tricalysia concolor]
                                             Empogona crepiniana
                                                   [Tricalysia crepiniana]
                                             Empogona discolor
                                                   [Tricalysia discolor]
                                             Empogona gossweileri
                                                   [Tricalysia gossweileri]
                                             Empogona macrophylla
                                                   [Tricalysia macrophylla]
                                             Empogona welwitschii
                                     Euclinia
                                             Euclinia longiflora
                                             Euclinia squamifera
                                     Exallage
                                             Exallage auricularia
                                                   [Oldenlandia auricularia]
                                     Fleroya
                                     Gaertnera
                                             Gaertnera aurea
                                             Gaertnera gabonensis
                                             Gaertnera leucothyrsa
                                             Gaertnera longivaginalis
                                                   [Psychotria longivaginalis]
                                               Gaertnera longivaginalis var. longivaginalis
                                             Gaertnera paniculata
                                                   [Gaertnera occidentalis]
                                             Gaertnera spicata
                                             Gaertnera trachystyla
                                                   [Gaertnera dinklagei]
                                                   [Gaertnera salicifolia]
                                     Gardenia
                                             Gardenia epiphytica
                                             Gardenia imperialis
                                               Gardenia imperialis subsp. physophylla
                                                     [Gardenia physophylla]
                                             Gardenia leopoldiana
                                             Gardenia ternifolia
                                             Gardenia vogelii
                                             Gardenia volkensii
                                     Geophila
                                             Geophila afzelii
                                             Geophila ingens
                                             Geophila lancistipula
                                             Geophila obvallata
                                               Geophila obvallata subsp. obvallata
                                             Geophila renaris
                                             Geophila repens
                                                   [Geophila reniformis]
                                     Globulostylis
                                             Globulostylis cuvieroides
                                                   [Cuviera cuvieroides]
                                             Globulostylis uncinula
                                                   [Cuviera uncinula]
                                     Hallea
                                     Heinsia
                                             Heinsia crinita
                                               Heinsia crinita subsp. crinita
                                                     [Heinsia crinita var. scitula]
                                                     [Heinsia crinita var. splendida]
                                                     [Heinsia jasminiflora]
                                               Heinsia crinita var. crinita
                                             Heinsia myrmoecia
                                     Hexasepalum
                                             Hexasepalum sarmentosum
                                                   [Diodella sarmentosa]
                                                   [Diodia sarmentosa]
                                             Hexasepalum scandens
                                                   [Diodella scandens]
                                                   [Diodia scandens]
                                             Hexasepalum serrulatum
                                                   [Diodella serrulata]
                                                   [Diodia maritima]
                                                   [Diodia serrulata]
                                             Hexasepalum vaginale
                                                   [Diodia vaginalis]
                                     Hymenocoleus
                                             Hymenocoleus axillaris
                                             Hymenocoleus barbatus
                                             Hymenocoleus glaber
                                             Hymenocoleus globulifer
                                             Hymenocoleus hirsutus
                                             Hymenocoleus libericus
                                             Hymenocoleus nervopilosus
                                               Hymenocoleus nervopilosus var. nervopilosus
                                               Hymenocoleus nervopilosus var. orientalis
                                             Hymenocoleus neurodictyon
                                               Hymenocoleus neurodictyon var. neurodictyon
                                             Hymenocoleus rotundifolius
                                             Hymenocoleus scaphus
                                             Hymenocoleus subipecacuanha
                                     Hymenodictyon
                                             Hymenodictyon berivotrense
                                             Hymenodictyon biafranum
                                             Hymenodictyon epiphyticum
                                             Hymenodictyon floribundum
                                     Ixora
                                             Ixora aneimenodesma
                                               Ixora aneimenodesma subsp. aneimenodesma
                                               Ixora aneimenodesma subsp. kizuensis
                                             Ixora brachypoda
                                             Ixora coccinea
                                             Ixora guineensis
                                                   [Ixora breviflora]
                                                   [Ixora riparia]
                                             Ixora hippoperifera
                                             Ixora inundata
                                             Ixora laxiflora
                                             Ixora macilenta
                                             Ixora minutiflora
                                               Ixora minutiflora subsp. chasalliensis
                                               Ixora minutiflora subsp. minutiflora
                                             Ixora nematopoda
                                             Ixora phellopus
                                             Ixora praetermissa
                                     Keetia
                                             Keetia acuminata
                                             Keetia bridsoniae
                                             Keetia gracilis
                                             Keetia gueinzii
                                             Keetia hispida
                                                   [Canthium hispidum]
                                             Keetia mannii
                                             Keetia ripae
                                             Keetia tenuiflora
                                             Keetia venosa
                                             Keetia venosissima
                                     Kohautia
                                             Kohautia kimuenzae
                                             Kohautia tenuis
                                     Lasianthus
                                             Lasianthus africanus
                                               Lasianthus africanus subsp. africanus
                                               Lasianthus africanus subsp. mayumbensis
                                                     [Lasianthus mayumbensis]
                                             Lasianthus batangensis
                                             Lasianthus kilimandscharicus
                                             Lasianthus repens
                                             Lasianthus urophylloides
                                     Leptactina
                                             Leptactina arborescens
                                                   [Dictyandra arborescens]
                                             Leptactina formosa
                                                   [Leptactina baudonii]
                                             Leptactina involucrata
                                             Leptactina latifolia
                                             Leptactina laurentiana
                                               Leptactina laurentiana var. laurentiana
                                             Leptactina leopoldi-secundi
                                             Leptactina leopoldii
                                             Leptactina mannii
                                               Leptactina mannii subsp. arnoldiana
                                                     [Leptactina arnoldiana]
                                               Leptactina mannii subsp. mannii
                                             Leptactina papalis
                                                   [Coleactina papalis]
                                             Leptactina pynaertii
                                     Margaritopsis
                                     Massularia
                                             Massularia acuminata
                                             Massularia stevartiana
                                     Mitracarpus
                                             Mitracarpus hirtus
                                                   [Mitracarpus villosus]
                                     Mitragyna
                                             Mitragyna ledermannii
                                                   [Fleroya ledermannii]
                                                   [Hallea ciliata]
                                                   [Hallea ledermannii]
                                                   [Mitragyna ciliata]
                                             Mitragyna macrophylla
                                             Mitragyna stipulosa
                                                   [Fleroya stipulosa]
                                                   [Hallea stipulosa]
                                     Morelia
                                             Morelia senegalensis
                                     Morinda
                                             Morinda longiflora
                                             Morinda lucida
                                             Morinda mefou
                                             Morinda morindoides
                                             Morinda titanophylla
                                     Mussaenda
                                             Mussaenda afzelii
                                             Mussaenda arcuata
                                                   [Mussaenda arcuata var. pubescens]
                                             Mussaenda debeauxii
                                             Mussaenda elegans
                                             Mussaenda erythrophylla
                                             Mussaenda leucophylla
                                             Mussaenda nannanii
                                             Mussaenda paludosa
                                             Mussaenda polita
                                             Mussaenda soyauxii
                                             Mussaenda tenuiflora
                                     Nauclea
                                             Nauclea diderrichii
                                                   [Nauclea trillesii]
                                                   [Sarcocephalus trillesii]
                                             Nauclea gilletii
                                             Nauclea latifolia
                                                   [Sarcocephalus latifolius]
                                             Nauclea pobeguinii
                                                   [Sarcocephalus pobeguinii]
                                             Nauclea vanderguchtii
                                     Nichallea
                                             Nichallea soyauxii
                                     Oldenlandia
                                             Oldenlandia affinis
                                             Oldenlandia capensis
                                               Oldenlandia capensis var. pleiosepala
                                             Oldenlandia corymbosa
                                             Oldenlandia herbacea
                                             Oldenlandia lancifolia
                                             Oldenlandia nematocaulis
                                             Oldenlandia nervosa
                                     Otomeria
                                             Otomeria cameronica
                                             Otomeria elatior
                                             Otomeria guineensis
                                             Otomeria micrantha
                                             Otomeria volubilis
                                     Oxyanthus
                                             Oxyanthus brevicaulis
                                             Oxyanthus formosus
                                             Oxyanthus goetzei
                                               Oxyanthus goetzei subsp. goetzei
                                                     [Oxyanthus swynnertonii]
                                             Oxyanthus gracilis
                                             Oxyanthus laxiflorus
                                             Oxyanthus pallidus
                                             Oxyanthus schumannianus
                                             Oxyanthus setosus
                                             Oxyanthus speciosus
                                               Oxyanthus speciosus subsp. speciosus
                                             Oxyanthus subpunctatus
                                             Oxyanthus unilocularis
                                     Palicourea
                                             Palicourea pedunculosa
                                                   [Psychotria pedunculosa]
                                     Parapentas
                                             Parapentas setigera
                                     Pauridiantha
                                             Pauridiantha barbata
                                             Pauridiantha callicarpoides
                                             Pauridiantha canthiiflora
                                             Pauridiantha cauliflora
                                                   [Stelechantha cauliflora]
                                             Pauridiantha crystallina
                                                   [Poecilocalyx crystallinus]
                                             Pauridiantha dewevrei
                                             Pauridiantha efferata
                                             Pauridiantha floribunda
                                             Pauridiantha le-testuana
                                             Pauridiantha liebrechtsiana
                                                   [Commitheca liebrechtsiana]
                                             Pauridiantha longistipula
                                             Pauridiantha mayumbensis
                                             Pauridiantha micrantha
                                             Pauridiantha microphylla
                                             Pauridiantha pleiantha
                                             Pauridiantha pyramidata
                                             Pauridiantha rubens
                                             Pauridiantha schumannii
                                                   [Poecilocalyx schumannii]
                                             Pauridiantha setiflora
                                                   [Poecilocalyx setiflorus]
                                             Pauridiantha siderophila
                                             Pauridiantha smetsiana
                                             Pauridiantha stipulosa
                                                   [Poecilocalyx stipulosa]
                                             Pauridiantha talbotii
                                                   [Pauridiantha venusta]
                                             Pauridiantha triflora
                                             Pauridiantha uniflora
                                             Pauridiantha verticillata
                                             Pauridiantha viridiflora
                                     Pausinystalia
                                     Pavetta
                                             Pavetta batesiana
                                             Pavetta bidentata
                                             Pavetta brachycalyx
                                             Pavetta camerounensis
                                               Pavetta camerounensis subsp. camerounensis
                                             Pavetta candelabra
                                             Pavetta cellulosa
                                             Pavetta corymbosa
                                               Pavetta corymbosa var. corymbosa
                                               Pavetta corymbosa var. neglecta
                                             Pavetta crystalensis
                                             Pavetta dolichosepala
                                             Pavetta gabonica
                                             Pavetta gracilipes
                                             Pavetta hierniana
                                             Pavetta hispida
                                             Pavetta lasioclada
                                             Pavetta laurentii
                                             Pavetta longibrachiata
                                                   [Pavetta polyantra]
                                             Pavetta mayumbensis
                                             Pavetta membranifolia
                                             Pavetta microthamnus
                                             Pavetta mpomii
                                             Pavetta nitidula
                                             Pavetta owariensis
                                               Pavetta owariensis var. glaucescens
                                                     [Pavetta chionantha]
                                               Pavetta owariensis var. opaca
                                               Pavetta owariensis var. owariensis
                                             Pavetta puberula
                                             Pavetta robusta
                                             Pavetta spathulata
                                             Pavetta stemonogyne
                                             Pavetta tenuissima
                                             Pavetta testui
                                             Pavetta tetramera
                                             Pavetta urophylla
                                               Pavetta urophylla subsp. urophylla
                                             Pavetta viridiloba
                                               Pavetta viridiloba var. viridiloba
                                             Pavetta zeyheri
                                               Pavetta zeyheri subsp. microlancea
                                                     [Pavetta microlancea]
                                             Pavetta zimmermanniana
                                     Pentaloncha
                                             Pentaloncha humilis
                                     Pentanisia
                                     Pentas
                                     Pentodon
                                             Pentodon pentandrus
                                               Pentodon pentandrus var. pentandrus
                                     Peripeplus
                                             Peripeplus bracteosus
                                                   [Psychotria bracteosa]
                                     Pleiocoryne
                                             Pleiocoryne fernandensis
                                     Poecilocalyx
                                     Porterandia
                                     Pouchetia
                                             Pouchetia africana
                                               Pouchetia africana var. aequatorialis
                                             Pouchetia baumanniana
                                                   [Pouchetia gilletii]
                                     Preussiodora
                                             Preussiodora sulphurea
                                     Pseudogardenia
                                     Pseudomussaenda
                                             Pseudomussaenda stenocarpa
                                     Pseudosabicea
                                     Psilanthus
                                     Psychotria
                                             Psychotria acutigemma
                                             Psychotria alatipes
                                             Psychotria anthocleistifolia
                                             Psychotria arnoldiana
                                             Psychotria articulata
                                             Psychotria bakossiensis
                                             Psychotria bampsiana
                                             Psychotria bifaria
                                                   [Psychotria solfiana]
                                             Psychotria bilineata
                                               Psychotria bilineata subsp. bilineata
                                             Psychotria brachyantha
                                             Psychotria brachypus
                                             Psychotria brandneriana
                                               Psychotria brandneriana subsp. brandneriana
                                             Psychotria breteleri
                                             Psychotria brevifissa
                                             Psychotria brieyi
                                             Psychotria calceata
                                             Psychotria callensii
                                             Psychotria camerunensis
                                             Psychotria camptopus
                                             Psychotria catetensis
                                             Psychotria champluvierae
                                             Psychotria clausa
                                             Psychotria crystallina
                                             Psychotria cyanopharynx
                                               Psychotria cyanopharynx subsp. cyanopharynx
                                             Psychotria darwiniana
                                             Psychotria degreefii
                                             Psychotria densinervia
                                                   [Cephaelis densinervia]
                                             Psychotria dermatophylla
                                             Psychotria descoingsii
                                             Psychotria desseinii
                                               Psychotria desseinii subsp. desseinii
                                               Psychotria desseinii subsp. minor
                                             Psychotria dewildei
                                             Psychotria djumaensis
                                             Psychotria ealaensis
                                             Psychotria ebensis
                                             Psychotria fimbriatifolia
                                             Psychotria flagelliflora
                                             Psychotria fleuryana
                                             Psychotria foliosa
                                             Psychotria gabonica
                                             Psychotria gilletii
                                             Psychotria globiceps
                                                   [Psychotria avakubiensis]
                                             Psychotria globosa
                                                   [Psychotria globosa var. ciliata]
                                                   [Psychotria oblanceolata]
                                             Psychotria gossweileri
                                             Psychotria guineensis
                                             Psychotria hedraeocephala
                                             Psychotria heterosticta
                                               Psychotria heterosticta subsp. ivindoensis
                                             Psychotria holtzii
                                             Psychotria humifera
                                             Psychotria humilis
                                             Psychotria infundibularis
                                             Psychotria issembei
                                             Psychotria ituriensis
                                             Psychotria janssensii
                                             Psychotria kimuenzae
                                             Psychotria klainei
                                             Psychotria konguensis
                                             Psychotria kupensis
                                             Psychotria lanceifolia
                                             Psychotria laticalyx
                                             Psychotria latistipula
                                             Psychotria lauracea
                                             Psychotria laxithyrsa
                                             Psychotria ledermannii
                                               Psychotria ledermannii var. cruciata
                                               Psychotria ledermannii var. doudouensis
                                               Psychotria ledermannii var. laxipilis
                                               Psychotria ledermannii var. ledermannii
                                               Psychotria ledermannii var. ogoouensis
                                             Psychotria leptophylla
                                             Psychotria letouzeyi
                                             Psychotria longicalyx
                                             Psychotria maesenii
                                             Psychotria mahonii
                                             Psychotria mangenotii
                                             Psychotria mannii
                                             Psychotria nervosa
                                                   [Psychotria rufescens]
                                             Psychotria neurosticta
                                             Psychotria nigropunctata
                                             Psychotria njumei
                                             Psychotria nzabii
                                             Psychotria peduncularis
                                                   [Cephaelis peduncularis]
                                               Psychotria peduncularis var. hypsophila
                                                     [Psychotria hypsophila]
                                               Psychotria peduncularis var. suaveolens
                                                     [Cephaelis peduncularis var. suaveolens]
                                             Psychotria pendulothyrsa
                                             Psychotria polytricha
                                                   [Psychotria rufipila]
                                             Psychotria psychotrioides
                                             Psychotria radicifera
                                             Psychotria rambouensis
                                             Psychotria refractiflora
                                             Psychotria reitsmarum
                                             Psychotria rhizomatosa
                                             Psychotria rubescens
                                             Psychotria rubriflora
                                             Psychotria rubripilis
                                             Psychotria rubristipulata
                                             Psychotria rubropilosa
                                             Psychotria sadebeckiana
                                             Psychotria schliebenii
                                             Psychotria schweinfurthii
                                             Psychotria sitae
                                               Psychotria sitae subsp. sitae
                                             Psychotria stenostegia
                                             Psychotria subobliqua
                                                   [Psychotria anetoclada]
                                                   [Psychotria lagenocarpa]
                                             Psychotria subpunctata
                                             Psychotria succulenta
                                             Psychotria synactica
                                             Psychotria thonneri
                                             Psychotria uapacifolia
                                             Psychotria umbellata
                                                   [Psychotria calva]
                                             Psychotria umbellifera
                                             Psychotria varians
                                             Psychotria venosa
                                             Psychotria verschuerenii
                                                   [Psychotria verschuerenii var. reducta]
                                             Psychotria viticoides
                                             Psychotria vogeliana
                                             Psychotria wieringae
                                     Psydrax
                                             Psydrax acutiflora
                                                   [Canthium acutiflorum]
                                             Psydrax arnoldiana
                                             Psydrax gilletii
                                             Psydrax horizontalis
                                                   [Canthium anomocarpum]
                                             Psydrax kraussioides
                                             Psydrax moandensis
                                             Psydrax mutimushii
                                             Psydrax palma
                                             Psydrax parviflora
                                               Psydrax parviflora subsp. parviflora
                                             Psydrax splendens
                                             Psydrax subcordata
                                                   [Canthium subcordatum]
                                     Pyrostria
                                             Pyrostria affinis
                                                   [Rytigynia affinis]
                                     Randia
                                     Richardia
                                             Richardia scabra
                                     Robbrechtia
                                             Robbrechtia grandifolia
                                     Rothmannia
                                             Rothmannia hispida
                                             Rothmannia lateriflora
                                             Rothmannia libisa
                                             Rothmannia liebrechtsiana
                                             Rothmannia longiflora
                                             Rothmannia lujae
                                             Rothmannia macrocarpa
                                             Rothmannia mayumbensis
                                             Rothmannia munsae
                                               Rothmannia munsae subsp. megalostigma
                                                     [Rothmannia megalostigma]
                                             Rothmannia octomera
                                             Rothmannia talbotii
                                             Rothmannia urcelliformis
                                             Rothmannia whitfieldii
                                                   [Rothmannia malleifera]
                                     Rubia
                                     Rudgea
                                             Rudgea cornifolia
                                                   [Psychotria fimbriata]
                                     Rutidea
                                             Rutidea decorticata
                                             Rutidea dupuisii
                                               Rutidea dupuisii subsp. dupuisii
                                                     [Rutidea striatulata]
                                             Rutidea ferruginea
                                             Rutidea gabonensis
                                             Rutidea glabra
                                             Rutidea gracilis
                                             Rutidea hispida
                                             Rutidea membranacea
                                             Rutidea olenotricha
                                             Rutidea smithii
                                     Rytigynia
                                             Rytigynia demeusei
                                             Rytigynia gossweileri
                                             Rytigynia gracilipetiolata
                                             Rytigynia laurentii
                                             Rytigynia lecomtei
                                             Rytigynia liberica
                                             Rytigynia membranacea
                                             Rytigynia pauciflora
                                             Rytigynia rubra
                                             Rytigynia umbellulata
                                             Rytigynia verruculosa
                                     Sabicea
                                             Sabicea apocynacea
                                                   [Ecpoma apocynaceum]
                                             Sabicea aurifodinae
                                                   [Pseudosabicea aurifodinae]
                                             Sabicea batesii
                                                   [Pseudosabicea batesii]
                                             Sabicea bigerrica
                                             Sabicea calycina
                                             Sabicea caminata
                                             Sabicea capitellata
                                             Sabicea carbunica
                                             Sabicea congensis
                                             Sabicea cordata
                                             Sabicea dewevrei
                                             Sabicea dinklagei
                                             Sabicea duparquetiana
                                                   [Sabicea duparquetiana var. impexella]
                                                   [Sabicea duparquetiana var. robbianella]
                                               Sabicea duparquetiana var. duparquetiana
                                             Sabicea floribunda
                                                   [Pseudosabicea floribunda]
                                             Sabicea fulva
                                             Sabicea gabonica
                                                   [Sabicea efulenensis]
                                             Sabicea geantha
                                             Sabicea golgothae
                                             Sabicea hierniana
                                                   [Ecpoma hierniana]
                                             Sabicea johnstonii
                                             Sabicea laxa
                                             Sabicea mabouniensis
                                             Sabicea medusula
                                                   [Pseudosabicea medusula]
                                             Sabicea mildbraedii
                                                   [Pseudosabicea mildbraedii var. jacfelicis]
                                                   [Pseudosabicea mildbraedii var. letestui]
                                                   [Pseudosabicea mildbraedii]
                                                   [Sabicea mildbraedii var. glabrescens]
                                             Sabicea mollis
                                             Sabicea najatrix
                                             Sabicea nobilis
                                                   [Pseudosabicea mitisphaera]
                                                   [Pseudosabicea nobilis]
                                             Sabicea orientalis
                                             Sabicea parmentierae
                                             Sabicea pedicellata
                                             Sabicea pilosa
                                             Sabicea proselyta
                                                   [Pseudosabicea proselyta]
                                             Sabicea rufa
                                             Sabicea sanguinosa
                                                   [Pseudosabicea sanguinosa]
                                             Sabicea schumanniana
                                             Sabicea sciaphilantha
                                               Sabicea sciaphilantha subsp. sciaphilantha
                                             Sabicea segregata
                                                   [Pseudosabicea segregata]
                                             Sabicea sthenula
                                                   [Pseudosabicea sthenula]
                                             Sabicea urceolata
                                             Sabicea urniformis
                                             Sabicea venosa
                                     Sacosperma
                                             Sacosperma paniculatum
                                     Sarcocephalus
                                     Schizocolea
                                             Schizocolea ochreata
                                     Schumanniophyton
                                             Schumanniophyton hirsutum
                                             Schumanniophyton magnificum
                                               Schumanniophyton magnificum var. klaineanum
                                                     [Schumanniophyton klaineanum]
                                               Schumanniophyton magnificum var. trimerum
                                     Sericanthe
                                             Sericanthe auriculata
                                             Sericanthe gabonensis
                                             Sericanthe jacfelicis
                                             Sericanthe mpassa
                                             Sericanthe pellegrinii
                                             Sericanthe petitii
                                                   [Neorosea petitii]
                                             Sericanthe rabia
                                             Sericanthe testui
                                               Sericanthe testui var. pseudosalacina
                                               Sericanthe testui var. testui
                                     Sherbournia
                                             Sherbournia ailarama
                                             Sherbournia amaraliocarpa
                                             Sherbournia batesii
                                               Sherbournia batesii subsp. batesii
                                             Sherbournia bignoniiflora
                                             Sherbournia buccularia
                                             Sherbournia curvipes
                                             Sherbournia hapalophylla
                                             Sherbournia kiliotricha
                                             Sherbournia myosura
                                             Sherbournia streptocaulon
                                     Spermacoce
                                             Spermacoce alata
                                                   [Spermacoce latifolia]
                                             Spermacoce bequaertii
                                             Spermacoce exilis
                                                   [Spermacoce mauritiana]
                                             Spermacoce filiformis
                                                   [Borreria filiformis]
                                             Spermacoce hepperiana
                                             Spermacoce intricans
                                             Spermacoce princeae
                                             Spermacoce pumila
                                             Spermacoce pusilla
                                                   [Borreria pusilla]
                                             Spermacoce ruelliae
                                             Spermacoce stachydea
                                             Spermacoce verticillata
                                                   [Borreria verticillata]
                                     Stelechantha
                                     Stephanococcus
                                             Stephanococcus crepinianus
                                     Stipularia
                                             Stipularia africana
                                                   [Sabicea africana]
                                     Tarenna
                                             Tarenna baconoides
                                             Tarenna bipindensis
                                             Tarenna calliblepharis
                                             Tarenna conferta
                                             Tarenna eketensis
                                               Tarenna eketensis var. eketensis
                                               Tarenna eketensis var. situtela
                                             Tarenna funebris
                                             Tarenna grandiflora
                                             Tarenna jolinonii
                                             Tarenna lasiorhachis
                                             Tarenna leonardii
                                             Tarenna ogoouensis
                                             Tarenna pallidula
                                             Tarenna petitii
                                             Tarenna precidantenna
                                             Tarenna vignei
                                               Tarenna vignei var. subglabra
                                     Temnopteryx
                                             Temnopteryx sericea
                                     Tricalysia
                                           [Neorosea]
                                             Tricalysia amplexicaulis
                                             Tricalysia anomala
                                               Tricalysia anomala var. guineensis
                                             Tricalysia atherura
                                             Tricalysia biafrana
                                             Tricalysia coriacea
                                               Tricalysia coriacea subsp. coriacea
                                             Tricalysia fangana
                                                   [Tricalysia biafrana var. fangana]
                                             Tricalysia ferorum
                                             Tricalysia griseiflora
                                             Tricalysia hensii
                                             Tricalysia lasiodelphys
                                               Tricalysia lasiodelphys subsp. anomalura
                                             Tricalysia micrantha
                                             Tricalysia obstetrix
                                             Tricalysia okelensis
                                             Tricalysia oligoneura
                                             Tricalysia pallens
                                             Tricalysia pangolina
                                             Tricalysia pedunculosa
                                               Tricalysia pedunculosa var. pedunculosa
                                               Tricalysia pedunculosa var. pilosula
                                                     [Tricalysia soyauxii var. pilosula]
                                             Tricalysia potamogala
                                             Tricalysia soyauxii
                                               Tricalysia soyauxii var. soyauxii
                                             Tricalysia sylvae
                                             Tricalysia trachycarpa
                                             Tricalysia vadensis
                                     Trichostachys
                                             Trichostachys aurea
                                             Trichostachys longifolia
                                             Trichostachys microcarpa
                                             Trichostachys stenostachys
                                     Uncaria
                                             Uncaria africana
                                               Uncaria africana subsp. africana
                                                     [Uncaria africana var. domatifera]
                                               Uncaria africana subsp. angolensis
                                                     [Uncaria africana var. angolensis]
                                               Uncaria africana var. africana
                                             Uncaria donisii
                                             Uncaria talbotii
                                     Vangueria
                                             Vangueria apiculata
                                             Vangueria silvicola
                                     Vangueriella
                                             Vangueriella campylacantha
                                             Vangueriella chlorantha
                                                   [Vangueriopsis chlorantha]
                                             Vangueriella georgesii
                                             Vangueriella glabrescens
                                             Vangueriella laxiflora
                                             Vangueriella letestui
                                             Vangueriella nigricans
                                             Vangueriella olacifolia
                                             Vangueriella orthacantha
                                             Vangueriella rufa
                                             Vangueriella soyauxii
                                     Vangueriopsis
                                             Vangueriopsis rubiginosa
                                     Virecta
                                     Virectaria
                                             Virectaria angustifolia
                                                   [Virecta angustifolia]
                                             Virectaria belingana
                                             Virectaria herbacoursi
                                             Virectaria major
                                             Virectaria multiflora
                                                   [Virecta multiflora]
                                             Virectaria procumbens