| Cinchona academica Guibourt | Synonym |  | TRO | 
	
		| Cinchona acuminata (Ruiz & Pav.) Poir. ex Lam. | Synonym |  | WCSP | 
	
		| Cinchona acutifolia Ruiz & Pav. | Synonym |  | WCSP | 
	
		| Cinchona × affinis Wedd. | Synonym |  | WCSP | 
	
		| Cinchona afroinda Willemet | Synonym |  | WCSP | 
	
		| Cinchona amazonica Standl. | Synonym |  | WCSP | 
	
		| Cinchona amygdalifolia Wedd. | Synonym |  | WCSP | 
	
		| Cinchona angustifolia Sw. | Synonym |  | WCSP | 
	
		| Cinchona angustifolia Ruiz | Synonym |  | TRO | 
	
		| Cinchona antioquiae L.Andersson | Accepted |  | WCSP | 
	
		| Cinchona asperifolia Wedd. | Accepted |  | WCSP | 
	
		| Cinchona australis (A.St.-Hil.) Brign. | Synonym |  | WCSP | 
	
		| Cinchona australis Wedd. | Synonym |  | WCSP | 
	
		| Cinchona barbacoensis H.Karst. | Accepted |  | WCSP | 
	
		| Cinchona bergeniana Mart. | Synonym |  | WCSP | 
	
		| Cinchona bicolor (Poepp.) Brign. | Synonym |  | WCSP | 
	
		| Cinchona bogotensis H.Karst. | Synonym |  | WCSP | 
	
		| Cinchona × boliviana Wedd. | Accepted |  | WCSP | 
	
		| Cinchona bonplandiana Klotzsch | Synonym |  | WCSP | 
	
		| Cinchona brachycarpa Wright [Unplaced] | Unresolved |  | WCSP | 
	
		| Cinchona brachycarpa Sw. | Synonym |  | WCSP | 
	
		| Cinchona brasiliensis Hoffmanss. ex Humb. | Synonym |  | WCSP | 
	
		| Cinchona caduciflora Humb. & Bonpl. | Synonym |  | WCSP | 
	
		| Cinchona calisaya Wedd. | Accepted |  | WCSP | 
	
		| Cinchona calisaya var. boliviana Wedd. | Synonym |  | WCSP | 
	
		| Cinchona calisaya var. josephiana Wedd. | Synonym |  | TRO | 
	
		| Cinchona calisaya var. ledgeriana Howard | Synonym |  | WCSP | 
	
		| Cinchona calisaya var. microcarpa Wedd. | Synonym |  | WCSP | 
	
		| Cinchona calisaya var. oblongifolia Wedd. | Synonym |  | WCSP | 
	
		| Cinchona calisaya wedd x pubescens vahl pro sp. | Accepted |  | TRO | 
	
		| Cinchona caloptera Miq. | Synonym |  | WCSP | 
	
		| Cinchona candollii G.Don | Synonym |  | WCSP | 
	
		| Cinchona canephora Pierre ex A. Froehner | Unresolved |  | TRO | 
	
		| Cinchona canescens (Bartl. ex DC.) Brign. | Synonym |  | WCSP | 
	
		| Cinchona capensis Burm. ex DC. [Invalid] | Synonym |  | WCSP | 
	
		| Cinchona capitata (Spreng.) Brign. | Synonym |  | WCSP | 
	
		| Cinchona capuli L.Andersson | Accepted |  | WCSP | 
	
		| Cinchona carabayensis Wedd. | Synonym |  | WCSP | 
	
		| Cinchona carabayensis var. lanceolata Miq. | Synonym |  | WCSP | 
	
		| Cinchona caribaea Jacq. | Synonym |  | WCSP | 
	
		| Cinchona caribbeana W.Wright | Synonym |  | WCSP | 
	
		| Cinchona caroliniana Poir. [Illegitimate] | Synonym |  | WCSP | 
	
		| Cinchona carua (Wedd.) Miq. | Synonym |  | WCSP | 
	
		| Cinchona cattukambar J.König ex Retz. | Synonym |  | WCSP | 
	
		| Cinchona cava Pav. ex Lamb. | Synonym |  | WCSP | 
	
		| Cinchona chahuarguera Pav. | Synonym |  | TRO | 
	
		| Cinchona chahuarguera Pav. ex DC. | Synonym |  | TRO | 
	
		| Cinchona china López ex DC. | Synonym |  | WCSP | 
	
		| Cinchona chlorrhiza Bory ex DC. | Synonym |  | WCSP | 
	
		| Cinchona chomeliana Wedd. | Synonym |  | WCSP | 
	
		| Cinchona cladorrhiza Bory ex Wedd. | Synonym |  | WCSP | 
	
		| Cinchona coccinea Pav. | Synonym |  | WCSP | 
	
		| Cinchona coccinea Pav. ex DC. | Synonym |  | TRO | 
	
		| Cinchona colorata Laubert ex B.D.Jacks. | Synonym |  | WCSP | 
	
		| Cinchona colorata Lambert | Synonym |  | TRO | 
	
		| Cinchona condaminea Bonpl. | Synonym |  | TRO | 
	
		| Cinchona condaminea var. candollii Wedd. | Synonym |  | WCSP | 
	
		| Cinchona condaminea var. chahuarguera Pav. ex DC. | Synonym |  | TRO | 
	
		| Cinchona condaminea var. lanceolata (Ruiz & Pav.) Lamb. | Synonym |  | WCSP | 
	
		| Cinchona condaminea var. lanceolata Wedd. | Synonym |  | TRO | 
	
		| Cinchona condaminea var. lancifolia (Mutis) Wedd. | Synonym |  | TRO | 
	
		| Cinchona condaminea var. lucumifolia (Pav. ex Lindl.) Wedd. | Synonym |  | WCSP | 
	
		| Cinchona condaminea var. pitayensis Wedd. | Synonym |  | WCSP | 
	
		| Cinchona condaminea var. vera Wedd. | Synonym |  | TRO | 
	
		| Cinchona conglomerata Pav. | Synonym |  | WCSP | 
	
		| Cinchona cordifolia Mutis | Synonym |  | WCSP | 
	
		| Cinchona cordifolia var. macrocarpa Wedd. ex Howard | Synonym |  | WCSP | 
	
		| Cinchona cordifolia var. rotundifolia (Pav. ex Lamb.) Wedd. | Synonym |  | WCSP | 
	
		| Cinchona coriacea Poir. | Synonym |  | WCSP | 
	
		| Cinchona cornifolia Kunth | Unresolved |  | TRO | 
	
		| Cinchona coronulata Miq. | Synonym |  | WCSP | 
	
		| Cinchona corymbifera G.Forst. | Synonym |  | WCSP | 
	
		| Cinchona corymbosa (Ruiz & Pav.) Brign. [Illegitimate] | Synonym |  | WCSP | 
	
		| Cinchona corymbosa H.Karst. | Synonym |  | WCSP | 
	
		| Cinchona crassifolia Pav. ex DC. | Synonym |  | WCSP | 
	
		| Cinchona crispa Tafalla ex Howard | Synonym |  | TRO | 
	
		| Cinchona cuatrecasasii Standl. ex Steyerm. | Synonym |  | WCSP | 
	
		| Cinchona cucumifolia Pav. ex Lamb. | Unresolved |  | WCSP (in review) | 
	
		| Cinchona cujabensis Silva Manso ex Klotzsch | Synonym |  | WCSP | 
	
		| Cinchona cuspidata (A.St.-Hil.) Brign. | Synonym |  | WCSP | 
	
		| Cinchona decurrentifolia Pav. | Synonym |  | WCSP | 
	
		| Cinchona delessertiana Standl. | Synonym |  | WCSP | 
	
		| Cinchona delondriana Wedd. | Synonym |  | WCSP | 
	
		| Cinchona densiflora (Benth.) Brign. | Synonym |  | WCSP | 
	
		| Cinchona dichotoma Ruiz & Pav. | Synonym |  | WCSP | 
	
		| Cinchona discolor Klotzsch | Synonym |  | WCSP | 
	
		| Cinchona dissimiliflora Mutis ex Humb. | Synonym |  | WCSP | 
	
		| Cinchona elliptica Wedd. | Synonym |  | WCSP | 
	
		| Cinchona erythrantha Pav. | Synonym |  | WCSP | 
	
		| Cinchona × erythroderma (Wedd.) Wedd. | Synonym |  | WCSP | 
	
		| Cinchona euneura Miq. | Synonym |  | WCSP | 
	
		| Cinchona excelsa Roxb. | Synonym |  | WCSP | 
	
		| Cinchona ferruginea A.St.-Hil. | Synonym |  | WCSP | 
	
		| Cinchona firmula Mart. | Synonym |  | WCSP | 
	
		| Cinchona flaccida (Wall.) Spreng. | Synonym |  | WCSP | 
	
		| Cinchona floribunda Sw. | Synonym |  | WCSP | 
	
		| Cinchona forbesiana Howard ex Wedd. | Synonym |  | WCSP | 
	
		| Cinchona formosa (Cham. & Schltdl.) Brign. | Synonym |  | WCSP | 
	
		| Cinchona formosa var. laevis (Cham. & Schltdl.) Brign. | Synonym |  | WCSP | 
	
		| Cinchona formosa var. leprosa (Cham. & Schltdl.) Brign. | Synonym |  | WCSP | 
	
		| Cinchona fruticosa L.Andersson | Accepted |  | WCSP | 
	
		| Cinchona fusca Vell. | Synonym |  | WCSP | 
	
		| Cinchona fusca Vitman | Synonym |  | WCSP | 
	
		| Cinchona gammiana King | Synonym |  | WCSP | 
	
		| Cinchona gironensis Mutis | Synonym |  | WCSP | 
	
		| Cinchona glabra Vell. [Unplaced] | Unresolved |  | WCSP | 
	
		| Cinchona glabra Ruiz [Unplaced] | Unresolved |  | WCSP | 
	
		| Cinchona glandulifera Ruiz & Pav. | Accepted |  | WCSP | 
	
		| Cinchona glandulosa Ruiz & Pav. ex Triana | Synonym |  | WCSP | 
	
		| Cinchona globifera Pav. ex DC. | Synonym |  | WCSP | 
	
		| Cinchona glomerata Ruiz & Pav. | Unresolved |  | TRO | 
	
		| Cinchona goudotiana Klotzsch ex Triana | Synonym |  | WCSP | 
	
		| Cinchona govana Miq. | Synonym |  | WCSP | 
	
		| Cinchona grandiflora Ruiz & Pav. | Synonym |  | WCSP | 
	
		| Cinchona grandifolia Ruiz & Pav. ex Poir. | Synonym |  | WCSP | 
	
		| Cinchona grandifolia Mutis ex Humboldt | Synonym |  | TRO | 
	
		| Cinchona gratissima Wall. | Synonym |  | WCSP | 
	
		| Cinchona haenkeana Bartl. ex DC. [Invalid] | Synonym |  | WCSP | 
	
		| Cinchona hasskarliana Miq. | Synonym |  | WCSP | 
	
		| Cinchona henleana H.Karst. | Synonym |  | WCSP | 
	
		| Cinchona henleana var. trichophylla Steyerm. | Synonym |  | WCSP | 
	
		| Cinchona herbacea L. | Synonym |  | WCSP | 
	
		| Cinchona heterocarpa H.Karst. | Synonym |  | WCSP | 
	
		| Cinchona heterophylla Pav. | Synonym |  | WCSP | 
	
		| Cinchona heterophylla Pavón ex DC. | Synonym |  | TRO | 
	
		| Cinchona hexandra (Pohl) G.Don | Synonym |  | WCSP | 
	
		| Cinchona hirsuta Ruiz & Pav. | Accepted |  | WCSP | 
	
		| Cinchona hookeriana (Wedd.) H.Karst. | Synonym |  | WCSP | 
	
		| Cinchona howardiana Kuntze | Synonym |  | WCSP | 
	
		| Cinchona humboldtiana Lamb. [Illegitimate] | Synonym |  | WCSP | 
	
		| Cinchona humboldtiana Schult. | Synonym |  | WCSP | 
	
		| Cinchona humboldtiana var. conglomerata (Pav.) Wedd. | Synonym |  | WCSP | 
	
		| Cinchona hybrida | Unresolved |  | TRO | 
	
		| Cinchona jamaicensis Wright | Synonym |  | WCSP | 
	
		| Cinchona josephiana (Wedd.) Wedd. | Synonym |  | TRO | 
	
		| Cinchona kattukambar K.D.Koenig ex DC. | Synonym |  | WCSP | 
	
		| Cinchona krauseana L.Andersson | Accepted |  | WCSP | 
	
		| Cinchona laccifera Tafalla ex Wedd. [Invalid] | Synonym |  | WCSP | 
	
		| Cinchona laccifera Ruiz & Pav. ex Fée [Invalid] | Synonym |  | WCSP | 
	
		| Cinchona lambertiana A.Br. ex Mart. | Synonym |  | WCSP | 
	
		| Cinchona lanceolata Ruiz & Pav. [Unplaced] | Unresolved |  | WCSP | 
	
		| Cinchona lanceolata Benth. | Synonym |  | TRO | 
	
		| Cinchona lancifolia Mutis | Accepted |  | TRO | 
	
		| Cinchona lancifolia var. discolor H. Karst. | Synonym |  | TRO | 
	
		| Cinchona lancifolia var. lanceolata Roem. & Schult. | Synonym |  | TRO | 
	
		| Cinchona lancifolia var. nitida (Ruiz & Pav.) Schult. | Synonym |  | WCSP | 
	
		| Cinchona lancifolia var. vera HOWARD | Synonym |  | TRO | 
	
		| Cinchona lechleriana Schltdl. | Synonym |  | WCSP | 
	
		| Cinchona ledgeriana (Howard) Bern.Moens ex Trimen | Synonym |  | WCSP | 
	
		| Cinchona legitima Ruiz ex Lamb. | Accepted |  | TRO | 
	
		| Cinchona ligustrina Vahl | Unresolved |  | TRO | 
	
		| Cinchona lineata Vahl | Synonym |  | WCSP | 
	
		| Cinchona longiflora Mutis ex Steud. | Synonym |  | WCSP | 
	
		| Cinchona longiflora Lamb. | Synonym |  | WCSP | 
	
		| Cinchona luciana Vitman | Synonym |  | WCSP | 
	
		| Cinchona lucumaefolia Pav. ex DC. | Synonym |  | TRO | 
	
		| Cinchona lucumifolia Pav. ex Lindl. | Accepted |  | WCSP | 
	
		| Cinchona lucumifolia Pavon ex DC. | Synonym |  | TRO | 
	
		| Cinchona lucumifolia var. stupea Wedd. | Synonym |  | TRO | 
	
		| Cinchona lutea Pav. | Synonym |  | WCSP | 
	
		| Cinchona lutescens Vell. [Illegitimate] | Synonym |  | WCSP | 
	
		| Cinchona lutescens Ruiz ex Vitman | Synonym |  | WCSP | 
	
		| Cinchona macrocalyx Pav. ex DC. | Accepted |  | WCSP | 
	
		| Cinchona macrocalyx var. lucumifolia DC. | Synonym |  | WCSP | 
	
		| Cinchona macrocalyx var. obtusifolia Pavón ex DC. | Synonym |  | TRO | 
	
		| Cinchona macrocalyx var. uritusinga Pav. ex DC. | Synonym |  | TRO | 
	
		| Cinchona macrocarpa Vahl | Synonym |  | WCSP | 
	
		| Cinchona macrocnemia Mart. | Synonym |  | WCSP | 
	
		| Cinchona macrophylla H.Karst. | Synonym |  | WCSP | 
	
		| Cinchona magniflora Pav. ex DC. | Synonym |  | WCSP | 
	
		| Cinchona magnifolia Ruiz & Pav. | Synonym |  | WCSP | 
	
		| Cinchona maynensis (Poepp.) Brign. | Synonym |  | WCSP | 
	
		| Cinchona micrantha Ruiz & Pav. | Accepted |  | WCSP | 
	
		| Cinchona micrantha var. affinis Pav. | Synonym |  | WCSP | 
	
		| Cinchona micrantha var. calisayoides Pav. | Synonym |  | WCSP | 
	
		| Cinchona micrantha var. huanucensis Pav. | Synonym |  | WCSP | 
	
		| Cinchona micrantha var. oblongifolia Wedd. | Synonym |  | WCSP | 
	
		| Cinchona micrantha var. reicheliana Pav. | Synonym |  | WCSP | 
	
		| Cinchona micrantha var. rotundifolia Wedd. | Synonym |  | WCSP | 
	
		| Cinchona microphylla Pav. ex Lamb. [Invalid] | Synonym |  | WCSP | 
	
		| Cinchona microphylla Pav. | Synonym |  | WCSP | 
	
		| Cinchona montana Badier | Synonym |  | WCSP | 
	
		| Cinchona morado Ruiz | Synonym |  | WCSP | 
	
		| Cinchona moritziana (Klotzsch) H.Karst. | Synonym |  | WCSP | 
	
		| Cinchona mutisii Lamb. | Accepted |  | WCSP | 
	
		| Cinchona mutisii var. crispa Wedd. | Synonym |  | WCSP | 
	
		| Cinchona mutisii var. macrophylla (Mutis ex Lamb.) Wedd. | Synonym |  | TRO | 
	
		| Cinchona mutisii var. microphylla Wedd. | Synonym |  | WCSP | 
	
		| Cinchona muzonensis Goudot | Synonym |  | WCSP | 
	
		| Cinchona myrtifolia Stokes [Illegitimate] | Synonym |  | WCSP | 
	
		| Cinchona nitida Ruiz & Pav. | Accepted |  | WCSP | 
	
		| Cinchona nitida Benth. [Illegitimate] | Synonym |  | WCSP | 
	
		| Cinchona oblongifolia Humb. ex Mutis | Synonym |  | WCSP | 
	
		| Cinchona oblongifolia Ruiz & Pav. | Synonym |  | TRO | 
	
		| Cinchona oblongifolia Lambert | Synonym |  | TRO | 
	
		| Cinchona obovata Pav. ex Howard | Synonym |  | WCSP | 
	
		| Cinchona obtusifolia D.Dietr. | Synonym |  | WCSP | 
	
		| Cinchona obtusifolia Pav. ex DC. | Synonym |  | TRO | 
	
		| Cinchona obtusifolia Ruiz & Pav. | Synonym |  | TRO | 
	
		| Cinchona officinalis L. | Accepted |  | TRO | 
	
		| Cinchona officinalis var. bonplandiana-colorata HOWARD | Synonym |  | TRO | 
	
		| Cinchona officinalis var. bonplandiana-lutea HOWARD | Synonym |  | TRO | 
	
		| Cinchona officinalis var. condaminea (Bonpl.) Howard | Synonym |  | TRO | 
	
		| Cinchona officinalis var. crispa (Tafalla ex Howard) HOWARD | Synonym |  | TRO | 
	
		| Cinchona officinalis var. uritusinga (Pav. ex DC.) HOWARD | Synonym |  | TRO | 
	
		| Cinchona orixensis Roxb. | Synonym |  | WCSP | 
	
		| Cinchona ovalifolia Kunth | Synonym |  | WCSP | 
	
		| Cinchona ovalifolia Mutis | Synonym |  | WCSP | 
	
		| Cinchona ovalifolia Bonpl. | Synonym |  | TRO | 
	
		| Cinchona ovata Ruiz & Pav. | Synonym |  | WCSP | 
	
		| Cinchona ovata var. erythroderma Wedd. | Synonym |  | WCSP | 
	
		| Cinchona ovata var. rufinervis (Wedd.) Wedd. | Synonym |  | WCSP | 
	
		| Cinchona pahudiana Howard | Synonym |  | WCSP | 
	
		| Cinchona palescens Vell. | Synonym |  | WCSP | 
	
		| Cinchona pallescens Ruiz ex Vitman [Illegitimate] | Synonym |  | WCSP | 
	
		| Cinchona pallescens Ruiz Lopez ex DC. | Synonym |  | TRO | 
	
		| Cinchona pallescens var. ovata (Ruiz & Pav.) Howard | Synonym |  | WCSP | 
	
		| Cinchona palton Pav. | Synonym |  | TRO | 
	
		| Cinchona paniculata (DC.) D.Dietr. | Synonym |  | WCSP | 
	
		| Cinchona parabolica Pav. | Accepted |  | WCSP | 
	
		| Cinchona parviflora (A.Rich. ex Humb. & Bonpl.) Brign. | Synonym |  | WCSP | 
	
		| Cinchona parviflora Poir. [Illegitimate] | Synonym |  | WCSP | 
	
		| Cinchona × pavoniana Kuntze | Synonym |  | WCSP | 
	
		| Cinchona pavonii Lamb. | Synonym |  | WCSP | 
	
		| Cinchona pedunculata H.Karst. | Synonym |  | WCSP | 
	
		| Cinchona pelalba Pav. ex DC. | Synonym |  | WCSP | 
	
		| Cinchona pelletieriana Wedd. | Synonym |  | WCSP | 
	
		| Cinchona penicillata | Unresolved |  | TRO | 
	
		| Cinchona peruviana Howard | Synonym |  | WCSP | 
	
		| Cinchona peruviana var. micrantha (Ruiz & Pav.) Howard | Synonym |  | WCSP | 
	
		| Cinchona peruviana var. nitida (Ruiz & Pav.) Howard | Synonym |  | WCSP | 
	
		| Cinchona peruviana var. vera Howard | Synonym |  | WCSP | 
	
		| Cinchona philippica Cav. | Synonym |  | WCSP | 
	
		| Cinchona pitayensis (Wedd.) Wedd. | Accepted |  | WCSP | 
	
		| Cinchona pitayensis var. trianae (H.Karst.) Wedd. | Synonym |  | WCSP | 
	
		| Cinchona platyphylla Wedd. [Illegitimate] | Synonym |  | WCSP | 
	
		| Cinchona prismatostylis H.Karst. | Synonym |  | WCSP | 
	
		| Cinchona pubens (Michx.) Hosack | Synonym |  | WCSP | 
	
		| Cinchona pubescens Endl. | Synonym |  | WCSP | 
	
		| Cinchona pubescens Vahl | Accepted |  | WCSP | 
	
		| Cinchona pubescens var. cordata DC. | Synonym |  | WCSP | 
	
		| Cinchona pubescens var. heterophylla Pav. ex DC. | Synonym |  | WCSP | 
	
		| Cinchona pubescens var. hirsuta (Ruiz & Pav.) DC. | Synonym |  | WCSP | 
	
		| Cinchona pubescens var. ovata (Ruiz & Pav.) DC. | Synonym |  | WCSP | 
	
		| Cinchona pubescens var. pelletieriana (Wedd.) Wedd. | Synonym |  | WCSP | 
	
		| Cinchona pubescens var. purpurea (Ruiz & Pav.) Wedd. | Synonym |  | WCSP | 
	
		| Cinchona purdieana (Wedd.) H.Karst. | Synonym |  | WCSP | 
	
		| Cinchona purpurascens Wedd. | Synonym |  | WCSP | 
	
		| Cinchona purpurea Vell. [Illegitimate] | Synonym |  | WCSP | 
	
		| Cinchona purpurea Ruiz & Pav. | Synonym |  | WCSP | 
	
		| Cinchona pyrifolia L.Andersson | Accepted |  | WCSP | 
	
		| Cinchona quercifolia Pav. ex Lamb. [Invalid] | Synonym |  | WCSP | 
	
		| Cinchona quina Ruiz | Synonym |  | WCSP | 
	
		| Cinchona racemosa Schrank ex Steud. | Synonym |  | WCSP | 
	
		| Cinchona reicheliana Howard [Invalid] | Synonym |  | WCSP | 
	
		| Cinchona remijiana A.St.-Hil. | Synonym |  | WCSP | 
	
		| Cinchona remyana Spreng. | Synonym |  | WCSP | 
	
		| Cinchona riedeliana Casar. | Synonym |  | WCSP | 
	
		| Cinchona robusta | Unresolved |  | TRO | 
	
		| Cinchona roraimae Benth. | Synonym |  | WCSP | 
	
		| Cinchona rosea Ruiz & Pav. | Synonym |  | WCSP | 
	
		| Cinchona rostrata Wedd. | Synonym |  | TRO | 
	
		| Cinchona rosulenta Howard ex Wedd. | Synonym |  | WCSP | 
	
		| Cinchona rotundifolia Pav. ex Lamb. | Synonym |  | WCSP | 
	
		| Cinchona rubicunda Tafalla ex Wedd. [Invalid] | Synonym |  | WCSP | 
	
		| Cinchona rufinervis Wedd. | Synonym |  | WCSP | 
	
		| Cinchona rugosa Pav. ex DC. | Synonym |  | WCSP | 
	
		| Cinchona rugosa Pav. | Accepted |  | WCSP | 
	
		| Cinchona sanctae-luciae Kentish | Synonym |  | WCSP | 
	
		| Cinchona scrobiculata Humb. & Bonpl. | Accepted |  | WCSP | 
	
		| Cinchona scrobiculata var. delondriana (Wedd.) Wedd. | Synonym |  | WCSP | 
	
		| Cinchona souzana (Mart.) Brign. | Synonym |  | WCSP | 
	
		| Cinchona spinosa Le Vavass. | Synonym |  | WCSP | 
	
		| Cinchona sprucei Rusby | Synonym |  | TRO | 
	
		| Cinchona stadtmannii J.V.Thomps. | Synonym |  | WCSP | 
	
		| Cinchona stenocarpa Lamb. | Synonym |  | WCSP | 
	
		| Cinchona stenosiphon K.Krause | Synonym |  | WCSP | 
	
		| Cinchona stupea Pav. ex Lamb. | Synonym |  | TRO | 
	
		| Cinchona subcordata Pav. ex Howard | Synonym |  | TRO | 
	
		| Cinchona suberosa Pav. ex Howard | Synonym |  | TRO | 
	
		| Cinchona subsessilis Miq. | Synonym |  | WCSP | 
	
		| Cinchona succirubra Pav. ex Klotzsch | Synonym |  | WCSP | 
	
		| Cinchona tarantaron Pav. ex Lamb. | Synonym |  | WCSP | 
	
		| Cinchona tarantaron Pav. ex Wedd. | Synonym |  | TRO | 
	
		| Cinchona tenuiflora (Benth.) Brign. | Synonym |  | WCSP | 
	
		| Cinchona tenuis Ruiz ex DC. [Invalid] | Synonym |  | WCSP | 
	
		| Cinchona tenuis Vell. | Synonym |  | WCSP | 
	
		| Cinchona thwaitesii King | Synonym |  | WCSP | 
	
		| Cinchona thyrsiflora Roxb. [Invalid] | Synonym |  | WCSP | 
	
		| Cinchona timorana Span. | Synonym |  | WCSP | 
	
		| Cinchona timorensis Span. ex Walp. [Spelling variant] | Synonym |  | WCSP | 
	
		| Cinchona tovarensis H.Karst. | Synonym |  | WCSP | 
	
		| Cinchona trianae H.Karst. | Synonym |  | WCSP | 
	
		| Cinchona triflora W.Wright | Synonym |  | WCSP | 
	
		| Cinchona tucujensis H.Karst. | Synonym |  | WCSP | 
	
		| Cinchona tucuyensis H. Karst. | Synonym |  | TRO | 
	
		| Cinchona tunita López ex Triana | Unresolved |  | WCSP (in review) | 
	
		| Cinchona umbellulifera Pav. ex Howard | Synonym |  | WCSP | 
	
		| Cinchona undata (Klotzsch) H.Karst. | Synonym |  | WCSP | 
	
		| Cinchona undulata Pav. ex Howard | Synonym |  | WCSP | 
	
		| Cinchona uritusinga Pav. ex DC. | Synonym |  | TRO | 
	
		| Cinchona uritusinga Pav. ex Howard | Synonym |  | TRO | 
	
		| Cinchona vellozii A.St.-Hil. | Synonym |  | WCSP | 
	
		| Cinchona villosa Pav. ex Lamb. [Invalid] | Synonym |  | WCSP | 
	
		| Cinchona villosa Pav. ex Lindl. | Accepted |  | WCSP | 
	
		| Cinchona violacea Pav. | Synonym |  | WCSP | 
	
		| Cinchona viridiflora Pav. | Synonym |  | WCSP | 
	
		| Cinchona vritusino Pav. ex DC. | Unresolved |  | WCSP (in review) | 
	
		| Cinchona weddelliana Kuntze | Synonym |  | WCSP | 
	
		| Cinchona weddelliana var. angustifolia Kuntze | Synonym |  | WCSP | 
	
		| Cinchona weddelliana var. multiscrobiculata Kuntze | Synonym |  | WCSP | 
	
		| Cinchona weddelliana var. rubrifolia Kuntze | Synonym |  | WCSP | 
	
		| Cinchona weddelliana var. rubrivenata Kuntze | Synonym |  | WCSP |