The Plant List — A working list for all plant species

⚠ Version 1 of The Plant List has been superseded.

You should refer instead to the current version of The Plant List.

Results

No plant names match your search for Cereus hallensis; we will try Cereus instead.

1175 plant name records match your search criteria Cereus. The results are below.

• Genus Cereus is in the family Cactaceae. Species epithets begin with: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

The results can also be downloaded as a CSV file.

See "Status", "Confidence level", "Source" for definitions.

Name	Status	Confi­dence level	Source
Cereus abnormis (Willd.) Sweet	Synonym		WCSP (in review)
Cereus aboriginum (Small) Little	Unresolved		WCSP (in review)
Cereus acanthosphaera Weing. [Unplaced]	Unresolved		WCSP (in review)
Cereus acanthurus Vaupel	Synonym		WCSP (in review)
Cereus acidus (Phil.) K.Schum.	Synonym		WCSP (in review)
Cereus acifer Otto ex Salm-Dyck	Synonym		WCSP (in review)
Cereus acinaciformis Steud.	Synonym		WCSP (in review)
Cereus aciniformis Pfeiff.	Synonym		WCSP (in review)
Cereus × ackermannii Pfeiff. [Unplaced]	Unresolved		WCSP (in review)
Cereus acranthus Vaupel	Unresolved		WCSP (in review)
Cereus acromelas Pfeiff.	Synonym		WCSP (in review)
Cereus aculeatus FORSTER	Unresolved		TRO
Cereus acutangulus Pfeiff.	Unresolved		WCSP (in review)
Cereus adelmarii (Rizzini & A.Mattos) P.J.Braun	Synonym		WCSP (in review)
Cereus adscendens Gürke	Synonym		WCSP (in review)
Cereus adustus (Engelm.) Engelm.	Synonym		WCSP (in review)
Cereus adustus var. radians (Engelm.) Engelm.	Synonym		WCSP (in review)
Cereus adustus var. radians (Engelm.) J.M. Coult.	Synonym		TRO
Cereus aethiops Haw.	Accepted		WCSP (in review)
Cereus aethiops var. landbeckii (Phil.) Backeb.	Synonym		WCSP (in review)
Cereus aethiops var. melanacanthus (K.Schum.) Backeb.	Synonym		WCSP (in review)
Cereus affinis Pfeiff.	Synonym		WCSP (in review)
Cereus aggregatus Coult.	Unresolved		WCSP (in review)
Cereus alacriportanus Pfeiff.	Unresolved		WCSP (in review)
Cereus alacriportanus var. bageanus (F.Ritter) P.J.Braun	Unresolved		WCSP (in review)
Cereus alamosensis Coult. [Unplaced]	Unresolved		WCSP (in review)
Cereus alatus (Sw.) DC.	Unresolved		WCSP (in review)
Cereus albertinii Fobe	Unresolved		TRO
Cereus albicaulis (Britton & Rose) Luetzelb.	Accepted		WCSP (in review)
Cereus albiflorus K. Schum.	Unresolved		TRO
Cereus albisetosus Haw. [Unplaced]	Unresolved		WCSP (in review)
Cereus albispinus Salm-Dyck [Unplaced]	Unresolved		WCSP (in review)
Cereus alensis (Weber) Vaupel	Unresolved		WCSP (in review)
Cereus alticostatus (F.Ritter) P.J.Braun	Synonym		WCSP (in review)
Cereus amazonicus K.Schum. ex Vaupel	Unresolved		WCSP (in review)
Cereus amazonicus K. Schum.	Accepted		TRO
Cereus ambiguus DC. [Unplaced]	Unresolved		WCSP (in review)
Cereus amblyogonus Don	Unresolved		TRO
Cereus amecaensis Heese	Unresolved		WCSP (in review)
Cereus amecamensis Heese in Rother	Synonym		TRO
Cereus amoena (A.Dietr.) Hemsl.	Synonym		WCSP (in review)
Cereus amoenus (A. Dietr.) Hemsl.	Synonym		TRO
Cereus andalgalensis F.A.C.Weber ex K.Schum.	Synonym		WCSP (in review)
Cereus anguiniformis hort.	Synonym		TRO
Cereus anguinus Gürke	Synonym		WCSP (in review)
Cereus angulosus Stieber ex Schumann	Unresolved		TRO
Cereus anisacanthus DC. [Unplaced]	Unresolved		WCSP (in review)
Cereus anisacanthus var. ortholophus DC.	Synonym		WCSP (in review)
Cereus anisacanthus var. subspiralis DC.	Synonym		WCSP (in review)
Cereus anisitsii K.Schum.	Synonym		WCSP (in review)
Cereus anizogonus Salm-Dyck	Unresolved		WCSP (in review)
Cereus anomalus K. Schum.	Unresolved		TRO
Cereus anquiniformis Weing.	Unresolved		TRO
Cereus antoinii Pfeiff.	Synonym		WCSP (in review)
Cereus apiciflorus Vaupel	Synonym		WCSP (in review)
Cereus apoloensis (Cárdenas) P.J.Braun & Esteves	Accepted		WCSP (in review)
Cereus aquicaulensis Pfeiff.	Unresolved		WCSP (in review)
Cereus arachnoides Lawr. [Unplaced]	Unresolved		WCSP (in review)
Cereus aragonii F.A.C.Weber	Synonym		WCSP (in review)
Cereus aragonii var. palmatus F.A.C.Weber	Synonym		WCSP (in review)
Cereus arboreus (Britton & Rose) Vaupel	Synonym		WCSP (in review)
Cereus arcuatus Zucc. [Unplaced]	Unresolved		WCSP (in review)
Cereus arendtii Hildm. & Mathes.	Unresolved		WCSP (in review)
Cereus areolatus Muehlenpf.	Synonym		TRO
Cereus arequipensis Meyen	Unresolved		WCSP (in review)
Cereus argentinensis Britton & Rose	Unresolved		WCSP (in review)
Cereus armatus Otto ex Pfeiff. [Unplaced]	Unresolved		WCSP (in review)
Cereus arrabidae Steud.	Unresolved		WCSP (in review)
Cereus arrabidae (Lem.) A. Berger	Synonym		TRO
Cereus arrigens Monv. ex Labour.	Unresolved		TRO
Cereus articulatus Pfeiff.	Unresolved		WCSP (in review)
Cereus assurgens C.Wright ex Griseb.	Unresolved		WCSP (in review)
Cereus atacamensis Phil.	Synonym		WCSP (in review)
Cereus atropurpureus Hocay.	Unresolved		WCSP (in review)
Cereus atrovirens FORSTER	Unresolved		TRO
Cereus atroviridis Backeb.	Synonym		WCSP (in review)
Cereus aurantiacus FORSTER	Unresolved		TRO
Cereus auratus Labour. [Unplaced]	Unresolved		WCSP (in review)
Cereus auratus f. intermedius Regel & E.Klein bis	Synonym		WCSP (in review)
Cereus auratus f. mollissimus Regel & E.Klein bis	Synonym		WCSP (in review)
Cereus auratus f. pilosus Regel & E.Klein bis	Synonym		WCSP (in review)
Cereus aureus Salm-Dyck ex DC. [Unplaced]	Unresolved		WCSP (in review)
Cereus aureus (Meyen) Meyen [Illegitimate]	Synonym		WCSP (in review)
Cereus aureus (Meyen) K.Schum.	Synonym		WCSP (in review)
Cereus aurivillus K.Schum.	Synonym		WCSP (in review)
Cereus aurora Rydb.	Unresolved		TRO
Cereus azureus Parm. ex Pfeiff.	Synonym		WCSP (in review)
Cereus azureus var. seidelii (Lehm.) Dams	Synonym		WCSP (in review)
Cereus babosus F.A.C. Weber	Unresolved		TRO
Cereus baccifer Hook.	Unresolved		TRO
Cereus bacciferus (J.S.Muell.) Hemsl.	Synonym		WCSP (in review)
Cereus backebergii Weing.	Synonym		WCSP (in review)
Cereus bahamensis (Britton) Vaupel	Unresolved		WCSP (in review)
Cereus bahiensis (Britton & Rose) Luetzelb.	Synonym		WCSP (in review)
Cereus bajanensis Werckle	Unresolved		TRO
Cereus bakeri (Britton & Rose) Vaupel	Synonym		WCSP (in review)
Cereus balansae K.Schum.	Unresolved		WCSP (in review)
Cereus ballivianii (Cárdenas) P.J.Braun & Esteves	Accepted		WCSP (in review)
Cereus barbadensis A.Berger	Unresolved		WCSP (in review)
Cereus barbatus J.C.Wendl. ex Salm-Dyck	Unresolved		WCSP (in review)
Cereus baumannii Lem.	Synonym		WCSP (in review)
Cereus baumannii var. colubrinus K.Schum.	Synonym		WCSP (in review)
Cereus baumannii var. flavispinus Salm-Dyck ex K.Schum.	Synonym		WCSP (in review)
Cereus bavosus A.Weber ex K.Schum. [Unplaced]	Unresolved		WCSP (in review)
Cereus baxaniensis Karw. ex Pfeiff.	Synonym		WCSP (in review)
Cereus baxaniensis f. pellucidus (Otto) Schelle	Synonym		WCSP (in review)
Cereus × beckmannii Weing.	Unresolved		WCSP (in review)
Cereus belieuli K. Schum.	Unresolved		TRO
Cereus beneckei Ehrenb.	Unresolved		WCSP (in review)
Cereus beneckei var. farinosus (Haage ex Salm-Dyck) Salm-Dyck	Unresolved		WCSP (in review)
Cereus bergerianus Vaupel	Synonym		WCSP (in review)
Cereus berlandieri Engelm.	Synonym		WCSP (in review)
Cereus bertinii E.Cels ex Herincq.	Synonym		WCSP (in review)
Cereus beysiegelii Weing. [Unplaced]	Unresolved		WCSP (in review)
Cereus bicolor Rizzini & A.Mattos	Synonym		WCSP (in review)
Cereus biformis Pfeiff.	Synonym		WCSP (in review)
Cereus biformis Lindl.	Unresolved		WCSP (in review)
Cereus bifrons Haw.	Unresolved		WCSP (in review)
Cereus bigelovii Engelm.	Unresolved		WCSP (in review)
Cereus biolleyi A.A.Weber ex K.Schum.	Unresolved		WCSP (in review)
Cereus blanckii Poselg.	Unresolved		WCSP (in review)
Cereus blossfeldiorum (Werderm.) Backeb.	Synonym		WCSP (in review)
Cereus boeckmannii Otto ex Salm-Dyck	Synonym		WCSP (in review)
Cereus bolivianus F.A.C. Weber	Unresolved		TRO
Cereus bonariensis Sweet [Unplaced]	Unresolved		WCSP (in review)
Cereus bonariensis C.F.Först.	Synonym		WCSP (in review)
Cereus bonplandii Parm. ex Pfeiff.	Unresolved		WCSP (in review)
Cereus brachiatus Galeotti ex Salm-Dyck [Unplaced]	Unresolved		WCSP (in review)
Cereus brachypetalus Vaupel	Synonym		WCSP (in review)
Cereus bradtianus Coult.	Synonym		WCSP (in review)
Cereus bradypus (Lehm.) Steud.	Synonym		WCSP (in review)
Cereus brandegeei Coult.	Synonym		WCSP (in review)
Cereus brandii Salm-Dyck	Synonym		WCSP (in review)
Cereus brasiliensis (Britton & Rose) Luetzelb.	Unresolved		WCSP (in review)
Cereus braunii Cárdenas	Accepted		WCSP (in review)
Cereus breviflorus K. Schum.	Unresolved		TRO
Cereus brevispinulus Salm-Dyck	Unresolved		WCSP (in review)
Cereus brevispinus A.Berger [Unplaced]	Unresolved		WCSP (in review)
Cereus brevistylus K.Schum. ex Vaupel	Synonym		WCSP (in review)
Cereus bridgesii Salm-Dyck	Synonym		WCSP (in review)
Cereus bridgesii var. brevispinus K.Schum.	Synonym		WCSP (in review)
Cereus bridgesii f. brevispinus (K.Schum.) Schelle	Synonym		WCSP (in review)
Cereus bridgesii var. lageniformis (C.F.Först.) K.Schum.	Synonym		WCSP (in review)
Cereus bridgesii f. lageniformis (C.F.Först.) Schelle	Synonym		WCSP (in review)
Cereus brittonianus Werderm.	Synonym		WCSP (in review)
Cereus brookii (Britton) Vaupel	Unresolved		WCSP (in review)
Cereus brooksianus (Britton & Rose) Vaupel	Unresolved		WCSP (in review)
Cereus caesius Salm-Dyck ex Pfeiff.	Accepted		WCSP (in review)
Cereus caespitosus Engelm. & A.Gray	Synonym		WCSP (in review)
Cereus caespitosus var. castaneus Engelm.	Synonym		WCSP (in review)
Cereus caespitosus var. major Engelm.	Synonym		WCSP (in review)
Cereus caespitosus var. minor Engelm.	Synonym		WCSP (in review)
Cereus calcaratus A.Weber	Unresolved		WCSP (in review)
Cereus calcirupicola (F.Ritter) Rizzini	Synonym		WCSP (in review)
Cereus calcirupicola var. albicans Rizzini	Synonym		WCSP (in review)
Cereus calcirupicola var. cabralensis (F.Ritter) P.J.Braun	Synonym		WCSP (in review)
Cereus calcirupicola subsp. cabralensis (F.Ritter) P.J.Braun & Esteves	Synonym		WCSP (in review)
Cereus calcirupicola var. cipoensis (F.Ritter) P.J.Braun	Synonym		WCSP (in review)
Cereus calcirupicola subsp. cipoensis (F.Ritter) P.J.Braun & Esteves	Synonym		WCSP (in review)
Cereus californicus Torr. & A.Gray	Synonym		WCSP (in review)
Cereus callianthus (Fuaux & Backeb.) P.J.Braun & Esteves	Synonym		WCSP (in review)
Cereus callicanthus (Rumpler) Woodson	Accepted		TRO
Cereus callicoche Galeotti ex Scheidw.	Unresolved		WCSP (in review)
Cereus calvescens DC.	Synonym		WCSP (in review)
Cereus calvus Engelm. ex J.M.Coult.	Synonym		WCSP (in review)
Cereus campinensis (Backeb. & Voll) P.J.Braun	Synonym		WCSP (in review)
Cereus campinensis var. piedadensis (F.Ritter) P.J.Braun	Synonym		WCSP (in review)
Cereus campinensis subsp. piedadensis (F.Ritter) P.J.Braun & Esteves	Synonym		WCSP (in review)
Cereus candelabrius Pfeiff.	Synonym		WCSP (in review)
Cereus candelabrum K.Schum. [Illegitimate]	Synonym		WCSP (in review)
Cereus candelaris Meyen	Synonym		WCSP (in review)
Cereus candicans Gillies ex Salm-Dyck	Synonym		WCSP (in review)
Cereus candicans var. courantii K.Schum.	Synonym		WCSP (in review)
Cereus candicans f. courantii (K.Schum.) Schelle	Synonym		WCSP (in review)
Cereus candicans var. gladiatus (Lem.) K.Schum.	Synonym		WCSP (in review)
Cereus candicans f. gladiatus (Lem.) Schelle	Synonym		WCSP (in review)
Cereus candicans var. robustior Salm-Dyck	Synonym		WCSP (in review)
Cereus candicans f. robustior (Salm-Dyck) Schelle	Synonym		WCSP (in review)
Cereus candicans var. tenuispinus Pfeiff.	Synonym		WCSP (in review)
Cereus caracore Gosselin	Unresolved		TRO
Cereus caripensis (Kunth) DC.	Synonym		WCSP (in review)
Cereus cartwrightianus (Britton & Rose) Werderm.	Unresolved		WCSP (in review)
Cereus castaneus (Phil.) K.Schum.	Synonym		WCSP (in review)
Cereus catamarcensis F.A.C. Weber	Unresolved		TRO
Cereus catingicola Gürke	Unresolved		WCSP (in review)
Cereus cauchinii Rebut	Unresolved		TRO
Cereus caudatus Gillies ex Sweet	Synonym		WCSP (in review)
Cereus cavendishii Monv. ex Salm-Dyck	Unresolved		WCSP (in review)
Cereus cavendishii Monv.	Synonym		TRO
Cereus celsianus (Cels) Orcutt	Unresolved		WCSP (in review)
Cereus celsianus (Lem. ex Salm-Dyck) A. Berger	Synonym		TRO
Cereus cephalomacrostibas Werderm. & Backeb.	Synonym		WCSP (in review)
Cereus chachapoyensis Ochoa & Backeb.	Synonym		WCSP (in review)
Cereus chacoanus Vaupel	Unresolved		WCSP (in review)
Cereus chalibaeus Salm-Dyck	Synonym		WCSP (in review)
Cereus chalybaeus Otto ex Walp.	Synonym		WCSP (in review)
Cereus chalybaeus C.F.Först. [Unplaced]	Unresolved		WCSP (in review)
Cereus chende Gosselin	Unresolved		WCSP (in review)
Cereus chichipe Gosselin	Unresolved		WCSP (in review)
Cereus childsii Blanc	Accepted		WCSP (in review)
Cereus chilensis Pfeiff. [Unplaced]	Unresolved		WCSP (in review)
Cereus chiloensis (Colla) DC.	Synonym		WCSP (in review)
Cereus chiloensis var. brevispinulus Salm-Dyck	Synonym		WCSP (in review)
Cereus chiloensis var. eburneus (Phil. ex K.Schum.) K.Schum.	Synonym		WCSP (in review)
Cereus chiloensis f. eburneus (Phil. ex K.Schum.) Schelle	Synonym		WCSP (in review)
Cereus chiloensis var. flavescens Salm-Dyck	Synonym		WCSP (in review)
Cereus chiloensis var. fulvibarbis (Otto) Salm-Dyck	Synonym		WCSP (in review)
Cereus chiloensis var. heteromorphus K.Schum.	Synonym		WCSP (in review)
Cereus chiloensis var. linnaei (C.F.Först.) K.Schum.	Synonym		WCSP (in review)
Cereus chiloensis var. panhoplites K.Schum.	Synonym		WCSP (in review)
Cereus chiloensis var. poselgeri K.Schum.	Synonym		WCSP (in review)
Cereus chiloensis var. pycnacanthus (Salm-Dyck) K.Schum.	Synonym		WCSP (in review)
Cereus chiloensis var. quisco (J.Rémy) F.A.C.Weber ex Hirscht	Synonym		WCSP (in review)
Cereus chiloensis var. zizkaanus K.Schum.	Synonym		WCSP (in review)
Cereus chiotilla A.Weber ex K.Schum.	Synonym		WCSP (in review)
Cereus chloranthus Engelm.	Synonym		WCSP (in review)
Cereus chlorocarpus (Kunth) DC.	Synonym		WCSP (in review)
Cereus chosicensis Werderm. & Backeb.	Unresolved		WCSP (in review)
Cereus chotaensis (Weber) Vaupel	Synonym		WCSP (in review)
Cereus chrysacanthus (Weber ex K.Schum.) Orcutt	Unresolved		WCSP (in review)
Cereus chrysacanthus (F.A.C. Weber ex Schum.) A. Berger	Synonym		TRO
Cereus chrysomallus Hemsl.	Synonym		WCSP (in review)
Cereus chrysostele Vaupel	Synonym		WCSP (in review)
Cereus cinerascens DC.	Synonym		WCSP (in review)
Cereus cinerascens var. crassior DC.	Synonym		WCSP (in review)
Cereus cinerascens var. fendleri Bois	Synonym		WCSP (in review)
Cereus cinerascens var. tenuior DC.	Synonym		WCSP (in review)
Cereus cinnabarinus Eichlam	Unresolved		WCSP (in review)
Cereus cirrhifer Labour.	Unresolved		TRO
Cereus cirrhiferus Labour. [Unplaced]	Unresolved		WCSP (in review)
Cereus claroviridis Backeb.	Synonym		WCSP (in review)
Cereus clavarioides Pfeiff.	Unresolved		WCSP (in review)
Cereus clavatus Otto & A.Dietr.	Synonym		WCSP (in review)
Cereus claviformis Regel & E.Klein bis	Synonym		WCSP (in review)
Cereus coccineus DC.	Unresolved		WCSP (in review)
Cereus coccineus Salm-Dyck ex Pfeiff. & Otto [Illegitimate]	Unresolved		WCSP (in review)
Cereus coccineus Engelm. [Illegitimate]	Synonym		WCSP (in review)
Cereus coccineus var. melanacanthus Engelm.	Synonym		WCSP (in review)
Cereus cochabambensis Cárdenas	Accepted		WCSP (in review)
Cereus cochabambensis var. longicarpa Cárdenas	Synonym		WCSP (in review)
Cereus cochal Orcutt	Unresolved		WCSP (in review)
Cereus coerulescens Salm-Dyck	Synonym		WCSP (in review)
Cereus coerulescens var. landbeckii (Phil.) K.Schum.	Synonym		WCSP (in review)
Cereus coerulescens f. landbeckii (Phil.) Schelle	Synonym		WCSP (in review)
Cereus coerulescens var. melanacanthus K.Schum.	Synonym		WCSP (in review)
Cereus coerulescens f. melanacanthus (K.Schum.) Schelle	Synonym		WCSP (in review)
Cereus coeruleus Lem.	Unresolved		TRO
Cereus cognatus Pfeiff.	Synonym		WCSP (in review)
Cereus colicochus Booth ex C.F.Först.	Synonym		WCSP (in review)
Cereus colombianus (Rose) Vaupel	Synonym		WCSP (in review)
Cereus colosseus F. Ritter	Accepted		TRO
Cereus colubrinus Otto ex Salm-Dyck	Synonym		WCSP (in review)
Cereus colubrinus var. flavispinus Salm-Dyck	Synonym		WCSP (in review)
Cereus colubrinus var. smaragdiflorus F.A.C. Weber	Synonym		TRO
Cereus columna Walp.	Synonym		WCSP (in review)
Cereus columna-trajani Karw. ex Pfeiff.	Unresolved		WCSP (in review)
Cereus columnaris Loddiges ex Voigt	Unresolved		TRO
Cereus × colvillii Sweet [Unplaced]	Unresolved		WCSP (in review)
Cereus comarapanus Cárdenas	Accepted		WCSP (in review)
Cereus cometes Scheidw.	Unresolved		WCSP (in review)
Cereus compressus Mill.	Synonym		WCSP (in review)
Cereus concolor J.M.Bigelow	Synonym		WCSP (in review)
Cereus conformis Salm-Dyck [Unplaced]	Unresolved		WCSP (in review)
Cereus conglomeratus (J.R.Forst.) A.Berger	Synonym		WCSP (in review)
Cereus conicus Pfeiff. [Unplaced]	Unresolved		WCSP (in review)
Cereus coniflorus Weing.	Synonym		WCSP (in review)
Cereus conoideus Engelm. & Bigelow [Unplaced]	Unresolved		WCSP (in review)
Cereus conoideus Engelm. & J.M. Bigelow	Synonym		TRO
Cereus conzattii (Britton & Rose) A.Berger	Synonym		WCSP (in review)
Cereus coquimbanus DC.	Synonym		WCSP (in review)
Cereus coquimbanus K.Schum.	Synonym		WCSP (in review)
Cereus coracare Gosselin	Unresolved		TRO
Cereus coryne C.F.Först. [Unplaced]	Unresolved		WCSP (in review)
Cereus coryne Salm-Dyck	Unresolved		WCSP (in review)
Cereus cossyrensis Tineo ex Tod. [Unplaced]	Unresolved		WCSP (in review)
Cereus costaricensis (Britton & Rose) A.Berger	Synonym		WCSP (in review)
Cereus crassisepalus Buining & Brederoo	Synonym		WCSP (in review)
Cereus crenatus Lindl.	Synonym		WCSP (in review)
Cereus crenoides Engelm. [Unplaced]	Unresolved		WCSP (in review)
Cereus crenulalus Salm-Dyck [Unplaced]	Unresolved		WCSP (in review)
Cereus crenulatus Salm-Dyck	Unresolved		TRO
Cereus crimsonii PRITZEL	Unresolved		TRO
Cereus crispatus (Haw.) Pfeiff. ex K.Schum.	Synonym		WCSP (in review)
Cereus cruciformis (Arrab.) Steud.	Synonym		WCSP (in review)
Cereus ctenoides Engelm. [Unplaced]	Unresolved		WCSP (in review)
Cereus cubensis Zucc. ex Pfeiff.	Unresolved		WCSP (in review)
Cereus cumengei F.A.C.Weber [Unplaced]	Unresolved		WCSP (in review)
Cereus cumengii F.A.C.Weber [Unplaced]	Unresolved		WCSP (in review)
Cereus cupulatus Pfeiff.	Synonym		WCSP (in review)
Cereus curtisii Pfeiff.	Unresolved		WCSP (in review)
Cereus curtisii Otto ex Pfeiff.	Synonym		TRO
Cereus curvispinus Pfeiff.	Synonym		WCSP (in review)
Cereus cuzcoensis (Britton & Rose) Werderm.	Synonym		WCSP (in review)
Cereus cyaneus A. Berger	Unresolved		TRO
Cereus cylindricus (Lam.) Haw.	Unresolved		WCSP (in review)
Cereus damazioi K.Schum.	Synonym		WCSP (in review)
Cereus dasyacanthus Engelm.	Synonym		WCSP (in review)
Cereus dasyacanthus var. minor Engelm.	Synonym		WCSP (in review)
Cereus dasyacanthus var. neomexicanus J.M.Coult.	Synonym		WCSP (in review)
Cereus dautwitzii (Haage) Orcutt	Synonym		WCSP (in review)
Cereus davisii Reiche	Unresolved		TRO
Cereus dayami Speg.	Synonym		WCSP (in review)
Cereus decagonus Pfeiff.	Synonym		WCSP (in review)
Cereus decandollei Pfeiff. ex C.F.Först. [Unplaced]	Unresolved		WCSP (in review)
Cereus decorus Loddiges ex Voigt	Unresolved		TRO
Cereus decumbens Vaupel	Synonym		WCSP (in review)
Cereus deficiens Otto & A.Dietr.	Synonym		WCSP (in review)
Cereus deflexispinus Monv. ex Labour.	Synonym		WCSP (in review)
Cereus deflexispinus Rauh & Backeb.	Synonym		WCSP (in review)
Cereus del-moralii J.A.Purpus [Unplaced]	Unresolved		WCSP (in review)
Cereus delaguna Haage	Unresolved		TRO
Cereus demacaro Haage	Unresolved		TRO
Cereus denudatus Pfeiff. [Unplaced]	Unresolved		WCSP (in review)
Cereus deppei Pfeiff.	Synonym		WCSP (in review)
Cereus deserticola Werderm.	Synonym		WCSP (in review)
Cereus devauxii Foerster	Unresolved		TRO
Cereus dichroacanthus Mart. ex Pfeiff. [Unplaced]	Unresolved		WCSP (in review)
Cereus diffusus (Britton & Rose) Werderm.	Accepted		WCSP (in review)
Cereus diguetii A.A.Weber	Unresolved		WCSP (in review)
Cereus divaricatus (Lam.) DC.	Unresolved		WCSP (in review)
Cereus divergens Pfeiff. [Unplaced]	Unresolved		WCSP (in review)
Cereus donatii Schelle [Unplaced]	Unresolved		WCSP (in review)
Cereus donkelaarii Salm-Dyck	Synonym		WCSP (in review)
Cereus dubius Engelm.	Synonym		WCSP (in review)
Cereus duledevantii Lem. [Unplaced]	Unresolved		WCSP (in review)
Cereus dumesnilianus Monv. ex F.A.C. Weber	Unresolved		TRO
Cereus dumesnilianus Haage ex Schumann	Unresolved		TRO
Cereus dumortieri Scheidw.	Unresolved		WCSP (in review)
Cereus dusenii A.A.Weber ex Speg.	Synonym		WCSP (in review)
Cereus dussii K.Schum. [Illegitimate]	Synonym		WCSP (in review)
Cereus dybowskii Rol.-Goss.	Synonym		WCSP (in review)
Cereus dybowskii Gosselin	Synonym		TRO
Cereus dyckii Mart. ex Pfeiff. [Unplaced]	Unresolved		WCSP (in review)
Cereus eburneus Salm-Dyck [Unplaced]	Unresolved		WCSP (in review)
Cereus eburneus var. polygonus Pfeiff.	Synonym		WCSP (in review)
Cereus edulis A.A.Weber ex Rother [Unplaced]	Unresolved		WCSP (in review)
Cereus ehrenbergii Pfeiff.	Synonym		WCSP (in review)
Cereus eichlamii (Britton & Rose) Standl.	Unresolved		WCSP (in review)
Cereus ekmanii Werderm.	Unresolved		WCSP (in review)
Cereus elegans Pfeiff.	Synonym		WCSP (in review)
Cereus elegans Lem. [Unplaced]	Unresolved		WCSP (in review)
Cereus elegantissimus (Britton & Rose) A.Berger	Unresolved		WCSP (in review)
Cereus emoryi Engelm.	Unresolved		WCSP (in review)
Cereus engelmannii Parry ex Engelm.	Synonym		WCSP (in review)
Cereus engelmannii var. chrysocentrus Engelm. & J.M.Bigelow	Synonym		WCSP (in review)
Cereus engelmannii var. variegatus Engelm. & J.M.Bigelow	Synonym		WCSP (in review)
Cereus enneacanthus Engelm.	Synonym		WCSP (in review)
Cereus enriquezii Elliott	Unresolved		TRO
Cereus erectus Karw. ex Pfeiff. [Unplaced]	Unresolved		WCSP (in review)
Cereus ericomus Rchb.f. [Unplaced]	Unresolved		WCSP (in review)
Cereus ericomus Salm-Dyck [Illegitimate]	Synonym		WCSP (in review)
Cereus erinaceus (Haw.) Steud.	Unresolved		WCSP (in review)
Cereus eriocarpus Phil. [Unplaced]	Unresolved		WCSP (in review)
Cereus eriophorus Pfeiff.	Unresolved		WCSP (in review)
Cereus eriotrichus Werderm. & Backeb.	Synonym		WCSP (in review)
Cereus eruca Brandegee	Unresolved		WCSP (in review)
Cereus erythrocephalus A.Berger	Synonym		WCSP (in review)
Cereus eryttrocephalus A. Berger	Unresolved		TRO
Cereus estevesii P.J.Braun	Accepted		WCSP (in review)
Cereus estrellensis F.A.C.Weber ex Wercklé [Unplaced]	Unresolved		WCSP (in review)
Cereus euchlorus F.A.C.Weber ex K.Schum.	Synonym		WCSP (in review)
Cereus euchlorus subsp. alticostatus (F.Ritter) P.J.Braun & Esteves	Synonym		WCSP (in review)
Cereus euchlorus subsp. leucanthus (F.Ritter) P.J.Braun & Esteves	Synonym		WCSP (in review)
Cereus euphorbioides Haw.	Unresolved		WCSP (in review)
Cereus exerens Link ex Pfeiff.	Synonym		WCSP (in review)
Cereus extensus Salm-Dyck ex DC.	Unresolved		WCSP (in review)
Cereus eyriesii Pfeiff.	Synonym		WCSP (in review)
Cereus farinosus Haage ex Salm-Dyck	Unresolved		WCSP (in review)
Cereus fascicularis Meyen	Unresolved		WCSP (in review)
Cereus fascicularis (Meyen) K.Schum.	Unresolved		WCSP (in review)
Cereus faustianus Backeb. [Unplaced]	Unresolved		WCSP (in review)
Cereus fendleri Engelm.	Synonym		WCSP (in review)
Cereus fendleri var. pauperculus Engelm.	Synonym		WCSP (in review)
Cereus ferchecki Parm. ex Pfeiff. [Unplaced]	Unresolved		WCSP (in review)
Cereus fernambucensis Lem.	Accepted		WCSP (in review)
Cereus fernambucensis subsp. sericifer (F.Ritter) N.P.Taylor & Zappi	Accepted		WCSP (in review)
Cereus ferox Haw. [Unplaced]	Unresolved		WCSP (in review)
Cereus fimbriatus (Lam.) DC.	Synonym		WCSP (in review)
Cereus fimbriatus Pfeiff. [Illegitimate]	Synonym		WCSP (in review)
Cereus flagelliformis (L.) Mill.	Synonym		WCSP (in review)
Cereus flagelliformis (L.) Haw.	Synonym		TRO
Cereus flagelliformis var. leptophis (DC.) K.Schum.	Synonym		WCSP (in review)
Cereus flagelliformis var. minor Salm-Dyck ex Pfeiff.	Synonym		WCSP (in review)
Cereus flagriformis Zucc. ex Pfeiff.	Synonym		WCSP (in review)
Cereus flavescens Otto ex Pfeiff [Unplaced]	Unresolved		WCSP (in review)
Cereus flavicomus Salm-Dyck [Unplaced]	Unresolved		WCSP (in review)
Cereus flaviflorus Engelm. ex J.M.Coult. [Unplaced]	Unresolved		WCSP (in review)
Cereus flavispinus Salm-Dyck	Synonym		WCSP (in review)
Cereus flavispinus (Colla) Haw. ex Steud.	Synonym		WCSP (in review)
Cereus flemingii Standl. & Steyerm.	Unresolved		TRO
Cereus flexuosus Engelm. [Unplaced]	Unresolved		WCSP (in review)
Cereus floccosus Pfeiff.	Unresolved		WCSP (in review)
Cereus fluminensis Miq.	Synonym		WCSP (in review)
Cereus foersteri Sencke	Unresolved		TRO
Cereus forbesii C.F.Först.	Accepted		WCSP (in review)
Cereus formosissimus F.A.C. Weber	Unresolved		TRO
Cereus formosus Monv.	Unresolved		WCSP (in review)
Cereus formosus C.F.Först. [Unplaced]	Unresolved		WCSP (in review)
Cereus fossulatus Backeb.	Unresolved		TRO
Cereus fouachianus (Weber ex Rol.-Goss.) Vaupel	Synonym		WCSP (in review)
Cereus foveolatus Haage ex Pfeiff. [Unplaced]	Unresolved		WCSP (in review)
Cereus fragrans (Small) Little	Unresolved		WCSP (in review)
Cereus × freiburgensis Weing.	Unresolved		WCSP (in review)
Cereus fricii Backeb.	Accepted		WCSP (in review)
Cereus × fulgidus Hook.f.	Synonym		WCSP (in review)
Cereus fulvibarbis Otto & A.Dietr.	Synonym		WCSP (in review)
Cereus fulviceps (Weber) A.Berger	Synonym		WCSP (in review)
Cereus fulvispinosus Haw.	Unresolved		WCSP (in review)
Cereus fulvispinus Salm-Dyck [Spelling variant]	Unresolved		WCSP (in review)
Cereus × funkii C.F.Först. [Unplaced]	Unresolved		WCSP (in review)
Cereus funkii K.Schum. [Unplaced]	Unresolved		WCSP (in review)
Cereus galapagensis A.Weber	Unresolved		WCSP (in review)
Cereus garambello Haage ex C.F.Först.	Unresolved		WCSP (in review)
Cereus gaumeri (Britton & Rose) Standl.	Unresolved		WCSP (in review)
Cereus geminatus Otto ex Pfeiff.	Synonym		WCSP (in review)
Cereus geminisetus Rchb. [Unplaced]	Unresolved		WCSP (in review)
Cereus gemmatus Zucc. ex Pfeiff. [Unplaced]	Unresolved		WCSP (in review)
Cereus gemmatus Otto	Synonym		TRO
Cereus geometrizans Mart. ex Pfeiff.	Unresolved		WCSP (in review)
Cereus geometrizans var. cochal (Orcutt) K.Brandegee	Unresolved		WCSP (in review)
Cereus geometrizans var. pugioniferus (Lem.) Salm-Dyck	Unresolved		TRO
Cereus ghiesbreghtii K.Schum.	Synonym		WCSP (in review)
Cereus gibbosus (Haw.) Sweet	Synonym		WCSP (in review)
Cereus gibbosus Pfeiff.	Synonym		TRO
Cereus giganteus Engelm.	Synonym		WCSP (in review)
Cereus gilliesii F.A.C. Weber	Unresolved		TRO
Cereus gilvus Salm-Dyck [Unplaced]	Unresolved		WCSP (in review)
Cereus glaber Eichlam	Unresolved		WCSP (in review)
Cereus gladiator Otto & A.Dietr.	Unresolved		WCSP (in review)
Cereus gladiatus Lem.	Synonym		WCSP (in review)
Cereus gladiger Cels ex Salm-Dyck	Synonym		WCSP (in review)
Cereus gladilger Lem. [Unplaced]	Unresolved		WCSP (in review)
Cereus glaucus Salm-Dyck	Accepted		WCSP (in review)
Cereus glaucus Pfeiff. [Illegitimate]	Synonym		WCSP (in review)
Cereus glaziovii K.Schum.	Synonym		WCSP (in review)
Cereus glomeratus Engelm. ex Orcutt	Unresolved		TRO
Cereus gloriosus Pfeiff.	Unresolved		WCSP (in review)
Cereus glycimorphus (Foerster) Orcutt	Synonym		WCSP (in review)
Cereus glycimorphus (Rumpler) A. Berger	Synonym		TRO
Cereus goebelianus Vaupel	Synonym		WCSP (in review)
Cereus goiasensis (F.Ritter) P.J.Braun	Synonym		WCSP (in review)
Cereus gonacanthus Engelm. & Bigelow	Synonym		WCSP (in review)
Cereus gonacanthus Engelm. & J.M. Bigelow	Synonym		TRO
Cereus gonzalezii A.Weber [Unplaced]	Unresolved		WCSP (in review)
Cereus gounellei (F.A.C.Weber ex K.Schum.) Luetzelb.	Synonym		WCSP (in review)
Cereus gracilis Mill.	Unresolved		WCSP (in review)
Cereus gracilis Haw. [Illegitimate]	Synonym		WCSP (in review)
Cereus grandicostatus Werderm.	Accepted		WCSP (in review)
Cereus grandiflorus (L.) Mill.	Synonym		WCSP (in review)
Cereus grandiflorus var. affinis Salm-Dyck	Synonym		TRO
Cereus grandiflorus var. armatus (K.Schum.) L.D.Benson	Synonym		WCSP (in review)
Cereus grandiflorus var. callicanthus Rumpler	Synonym		TRO
Cereus grandiflorus var. uranus Riccob.	Synonym		TRO
Cereus grandis Haw. [Unplaced]	Unresolved		WCSP (in review)
Cereus grandispinus Haw. [Unplaced]	Unresolved		WCSP (in review)
Cereus greggii Engelm.	Unresolved		WCSP (in review)
Cereus greggii W.Watson [Unplaced]	Unresolved		WCSP (in review)
Cereus greggii var. transmontanus Engelm.	Unresolved		WCSP (in review)
Cereus grenadensis Britton & Rose	Synonym		WCSP (in review)
Cereus griseus Haw.	Synonym		WCSP (in review)
Cereus grossei Weing.	Synonym		WCSP (in review)
Cereus grusonianus Weing.	Unresolved		WCSP (in review)
Cereus guasabara Cortes	Unresolved		TRO
Cereus guatemalensis Vaupel	Unresolved		WCSP (in review)
Cereus guatemalensis (Eichler) A.Berger [Illegitimate]	Synonym		WCSP (in review)
Cereus guelichii Speg.	Unresolved		WCSP (in review)
Cereus guentheri (Kupper) Werderm. [Illegitimate]	Synonym		WCSP (in review)
Cereus gumminosus Hildmann ex Schumann	Unresolved		TRO
Cereus gummosus Engelm.	Unresolved		WCSP (in review)
Cereus haageanus (Backeb.) N.P.Taylor	Accepted		WCSP (in review)
Cereus haematuricus F.A.C. Weber ex K. Schum.	Unresolved		TRO
Cereus haitiensis Schelle	Unresolved		TRO
Cereus hamatus Scheidw.	Synonym		WCSP (in review)
Cereus hankeanus F.A.C.Weber ex K.Schum.	Accepted		WCSP (in review)
Cereus × hansii Baumann [Unplaced]	Unresolved		WCSP (in review)
Cereus hassleri K.Schum.	Unresolved		WCSP (in review)
Cereus haworthii DC. [Unplaced]	Unresolved		WCSP (in review)
Cereus haynei (Otto ex Salm-Dyck) Croucher	Unresolved		WCSP (in review)
Cereus hempelianus Bauer	Unresolved		TRO
Cereus hendriksenianus Backeb.	Unresolved		WCSP (in review)
Cereus heptagonus (L.) Mill.	Synonym		WCSP (in review)
Cereus hermannianus Suringar [Unplaced]	Unresolved		WCSP (in review)
Cereus hermentianus Monv. ex Lem. [Unplaced]	Unresolved		WCSP (in review)
Cereus hertrichianus Werderm.	Accepted		WCSP (in review)
Cereus herzogianus Backeb. [Unplaced]	Unresolved		WCSP (in review)
Cereus heteracanthus Tweedie ex Sweet [Unplaced]	Unresolved		WCSP (in review)
Cereus heteromorphus Monv.	Unresolved		TRO
Cereus hexaedrus Engelm. & Bigelow	Synonym		WCSP (in review)
Cereus hexaedrus Engelm.	Synonym		TRO
Cereus hexagonus (L.) Mill.	Accepted		WCSP (in review)
Cereus hexangularis Pfeiff.	Synonym		WCSP (in review)
Cereus hildmannianus K.Schum.	Accepted		WCSP (in review)
Cereus hildmannianus subsp. xanthocarpus (K.Schum.) P.J.Braun & Esteves	Synonym		WCSP (in review)
Cereus hirschtianus K.Schum.	Unresolved		WCSP (in review)
Cereus hoffmannseggii C.F.Först.	Unresolved		WCSP (in review)
Cereus hollianus F.A.C.Weber ex J.M.Coult.	Unresolved		WCSP (in review)
Cereus hondurensis K.Schum.	Synonym		WCSP (in review)
Cereus hoogendorpii Kuntze	Unresolved		TRO
Cereus hookeri (Haw.) Pfeifer	Synonym		WCSP (in review)
Cereus hoppenstedtii K.Schum. [Unplaced]	Unresolved		WCSP (in review)
Cereus hoppenstedtii (F.A.C. Weber) A. Berger	Synonym		TRO
Cereus horizontalis Gillies ex Sweet [Unplaced]	Unresolved		WCSP (in review)
Cereus horrens Lem. [Unplaced]	Unresolved		WCSP (in review)
Cereus horribarbis Salm-Dyck	Synonym		WCSP (in review)
Cereus horribilis A.Berger	Synonym		WCSP (in review)
Cereus horridus Otto ex Pfeiff.	Synonym		WCSP (in review)
Cereus horridus var. alatosquamatus Werderm.	Synonym		WCSP (in review)
Cereus horrispinus Backeb.	Accepted		WCSP (in review)
Cereus houlletii Lem. [Unplaced]	Unresolved		WCSP (in review)
Cereus houlletii (Lem.) A. Berger	Accepted		TRO
Cereus huascha F.A.C.Weber	Synonym		WCSP (in review)
Cereus huascha var. flaviflora F.A.C.Weber	Synonym		WCSP (in review)
Cereus huascha var. rubriflorus F.A.C.Weber	Synonym		WCSP (in review)
Cereus huilunchu Cárdenas	Accepted		WCSP (in review)
Cereus huitcholensis F.A.C.Weber	Synonym		WCSP (in review)
Cereus humboldtianus Backeb. [Unplaced]	Unresolved		WCSP (in review)
Cereus humboldtii (Kunth) DC.	Synonym		WCSP (in review)
Cereus humilis DC. [Unplaced]	Unresolved		WCSP (in review)
Cereus huntingtonianus Weing. [Unplaced]	Unresolved		WCSP (in review)
Cereus huottii Cels	Unresolved		TRO
Cereus hyalacanthus K.Schum.	Unresolved		WCSP (in review)
Cereus hybridus Otto	Unresolved		WCSP (in review)
Cereus hypogaeus F.A.C.Weber ex Regel [Unplaced]	Unresolved		WCSP (in review)
Cereus hystrix Salm-Dyck [Unplaced]	Unresolved		WCSP (in review)
Cereus hystrix Sweet [Unplaced]	Unresolved		WCSP (in review)
Cereus ianthothele Monv.	Synonym		TRO
Cereus icosagonus (Kunth) DC.	Synonym		WCSP (in review)
Cereus ictidurus Greene	Unresolved		TRO
Cereus imbricatus Haw.	Synonym		WCSP (in review)
Cereus imbricatus Pfeiff.	Synonym		WCSP (in review)
Cereus incrustans Steud.	Synonym		WCSP (in review)
Cereus incrustatus Pfeiff.	Synonym		WCSP (in review)
Cereus incurvispinus Otto & A.Dietr.	Synonym		WCSP (in review)
Cereus inermis Otto	Synonym		WCSP (in review)
Cereus inermis Scheidw. [Illegitimate]	Synonym		WCSP (in review)
Cereus insularis Hemsl.	Accepted		WCSP (in review)
Cereus intricatus Salm-Dyck	Synonym		WCSP (in review)
Cereus inversus FORSTER	Unresolved		TRO
Cereus iquiquensis K.Schum.	Synonym		WCSP (in review)
Cereus irradians Lem. [Unplaced]	Unresolved		WCSP (in review)
Cereus isogonus K.Schum.	Synonym		WCSP (in review)
Cereus jacquinii Rebut	Unresolved		TRO
Cereus jajoianus Backeb.	Synonym		WCSP (in review)
Cereus jalapaensis Vaupel	Synonym		WCSP (in review)
Cereus jamacaru DC.	Accepted		WCSP (in review)
Cereus jamacaru subsp. calcirupicola (F.Ritter) N.P.Taylor & Zappi	Accepted		WCSP (in review)
Cereus jamacaru subsp. goiasensis (F.Ritter) P.J.Braun & Esteves	Synonym		WCSP (in review)
Cereus janthothele Monv. ex Salm-Dyck	Unresolved		WCSP (in review)
Cereus jasmineus Pfeiff.	Synonym		WCSP (in review)
Cereus jenkinsoni Sweet	Unresolved		TRO
Cereus joconostle F.A.C. Weber	Unresolved		TRO
Cereus johnstonii (Britton & Rose) A.Berger	Unresolved		WCSP (in review)
Cereus josselinaeus D. Gaillard	Unresolved		TRO
Cereus jubatus Salm-Dyck ex C.F.Först.	Unresolved		WCSP (in review)
Cereus jugatiflorus Werderm. [Unplaced]	Unresolved		WCSP (in review)
Cereus jusbertii Rebut ex K.Schum.	Unresolved		WCSP (in review)
Cereus kageneckii J.F.Gmel. ex Pfeiff.	Unresolved		WCSP (in review)
Cereus kalbreyerianus Wercklé [Unplaced]	Unresolved		WCSP (in review)
Cereus karstenii Salm-Dyck	Synonym		WCSP (in review)
Cereus karwinskii Haage	Unresolved		TRO
Cereus kerberi K.Schum.	Unresolved		WCSP (in review)
Cereus kewensis Worsley	Unresolved		TRO
Cereus keyensis (Britton & Rose) Vaupel	Unresolved		WCSP (in review)
Cereus knightii Parm. ex Pfeiff.	Synonym		WCSP (in review)
Cereus knippelianus (Liebner) Orcutt	Synonym		WCSP (in review)
Cereus kreggii K.Schum. [Unplaced]	Unresolved		WCSP (in review)
Cereus kroeneinii (R. Kiesling) P.J. Braun & Esteves	Accepted		TRO
Cereus kroenleinii N.P.Taylor	Synonym		WCSP (in review)
Cereus kunthianus Salm-Dyck	Synonym		WCSP (in review)
Cereus labouretianus Mart. ex K. Schum.	Unresolved		TRO
Cereus laetevirens Salm-Dyck	Synonym		WCSP (in review)
Cereus laetevirens Pfeiff.	Synonym		WCSP (in review)
Cereus laetus (Kunth) DC.	Unresolved		WCSP (in review)
Cereus laetus Salm-Dyck	Synonym		WCSP (in review)
Cereus laevigatus Salm-Dyck	Unresolved		WCSP (in review)
Cereus laevigatus var. guatemalensis Eichlam	Synonym		WCSP (in review)
Cereus lageniformis C.F.Först.	Synonym		WCSP (in review)
Cereus lamprochlorus Lem.	Synonym		WCSP (in review)
Cereus lamprochlorus var. salinicola Speg.	Synonym		WCSP (in review)
Cereus lamprospermus K.Schum.	Accepted		WCSP (in review)
Cereus lanatus (Kunth) DC.	Synonym		WCSP (in review)
Cereus lanatus subsp. sericatus (Backeb.) Werderm.	Synonym		WCSP (in review)
Cereus lanceanus Don	Unresolved		TRO
Cereus landbeckii Phil. ex Regel	Synonym		WCSP (in review)
Cereus langlassei Weing.	Unresolved		TRO
Cereus laniceps K.Schum.	Synonym		WCSP (in review)
Cereus lanosus (F.Ritter) P.J.Braun	Accepted		WCSP (in review)
Cereus lanuginosus Mill.	Synonym		WCSP (in review)
Cereus lanuginosus (L.) Haw. [Illegitimate]	Synonym		WCSP (in review)
Cereus lasianthus K.Schum. [Unplaced]	Unresolved		WCSP (in review)
Cereus lateribarbatus Lem.	Synonym		WCSP (in review)
Cereus lateritius Salm-Dyck	Unresolved		TRO
Cereus latifrons Zucc.	Synonym		WCSP (in review)
Cereus lauterbachii K.Schum. ex Chodat & Hassl.	Accepted		WCSP (in review)
Cereus lecchii Pfeiff. [Unplaced]	Unresolved		WCSP (in review)
Cereus leeanus Hook.	Synonym		WCSP (in review)
Cereus lehmannii C.F.Först.	Unresolved		WCSP (in review)
Cereus leiocarpus Bello [Unplaced]	Unresolved		WCSP (in review)
Cereus lemairei Hook.	Synonym		WCSP (in review)
Cereus lemoinei Mollers	Unresolved		TRO
Cereus leonensis (Mathsson) Orcutt	Synonym		WCSP (in review)
Cereus leonensis (Mathsson) A. Berger	Synonym		TRO
Cereus leonii (Britton & Rose) Vaupel	Synonym		WCSP (in review)
Cereus lepidanthus Eichlam	Synonym		WCSP (in review)
Cereus lepidotus Salm-Dyck	Synonym		WCSP (in review)
Cereus leptacanthus DC. ex Pfeiff.	Synonym		WCSP (in review)
Cereus leptophis DC.	Synonym		WCSP (in review)
Cereus leucanthus (Gillies ex Salm-Dyck) Pfeiff.	Synonym		WCSP (in review)
Cereus leucostele Gürke	Synonym		WCSP (in review)
Cereus limensis Salm-Dyck	Unresolved		WCSP (in review)
Cereus limensis Lodd. ex C.F.Först. [Illegitimate]	Synonym		WCSP (in review)
Cereus lindbergianus F.A.C.Weber ex K.Schum.	Unresolved		WCSP (in review)
Cereus lindenzweigianus Gürke	Synonym		WCSP (in review)
Cereus lindmanii F.A.C.Weber ex K.Schum.	Unresolved		WCSP (in review)
Cereus linkii Pfeiff.	Unresolved		WCSP (in review)
Cereus linnaei C.F.Först. [Unplaced]	Unresolved		WCSP (in review)
Cereus litoralis Johow	Synonym		WCSP (in review)
Cereus lividus Pfeiff. [Unplaced]	Unresolved		WCSP (in review)
Cereus longicaudatus F.A.C.Weber [Unplaced]	Unresolved		WCSP (in review)
Cereus longiflorus Alexander	Synonym		WCSP (in review)
Cereus longifolius Karw.	Unresolved		TRO
Cereus longipendunculatus FORSTER	Unresolved		TRO
Cereus longisetus Engelm.	Synonym		WCSP (in review)
Cereus longispinus Salm-Dyck ex Otto & Dietr.	Synonym		WCSP (in review)
Cereus lormata Maass	Unresolved		TRO
Cereus luetzelburgii Vaupel	Unresolved		WCSP (in review)
Cereus lumbricoides Lem.	Synonym		WCSP (in review)
Cereus lutescens Salm-Dyck ex Pfeiff. [Unplaced]	Unresolved		WCSP (in review)
Cereus macdonaldiae Hook.	Unresolved		WCSP (in review)
Cereus macrocephalus (Weber) A.Berger	Unresolved		WCSP (in review)
Cereus macrogonus Salm-Dyck	Synonym		WCSP (in review)
Cereus macrostibas (Schum.) A.Berger	Unresolved		WCSP (in review)
Cereus macrostibas var. roseiflorus Werderm. & Backeb.	Synonym		TRO
Cereus maculatus Weing.	Unresolved		WCSP (in review)
Cereus maelenii Pfeiff. [Unplaced]	Unresolved		WCSP (in review)
Cereus magnus Haw. [Unplaced]	Unresolved		WCSP (in review)
Cereus malletianus Cels ex K.Schum. [Unplaced]	Unresolved		WCSP (in review)
Cereus × mallisonii Pfeiff.	Synonym		WCSP (in review)
Cereus mallisonii Otto & A. Dietr.	Synonym		TRO
Cereus mamillatus Engelm. ex J.M.Coult.	Synonym		WCSP (in review)
Cereus margaritensis J.R.Johnst.	Synonym		WCSP (in review)
Cereus margaritensis var. micracanthus Hummelinck	Synonym		WCSP (in review)
Cereus marginatus DC.	Unresolved		WCSP (in review)
Cereus marginatus Salm-Dyck [Illegitimate]	Synonym		WCSP (in review)
Cereus marginatus f. gibbosus J.A.Purpus	Synonym		WCSP (in review)
Cereus mariculi Pfeiff.	Synonym		WCSP (in review)
Cereus maritimus Coult.	Synonym		WCSP (in review)
Cereus maritimus M.E. Jones	Synonym		TRO
Cereus markgrafii (Backeb. & Voll) P.J.Braun	Synonym		WCSP (in review)
Cereus marmoratus Zeiss.	Synonym		TRO
Cereus martianus Zucc. ex Pfeiff.	Synonym		WCSP (in review)
Cereus martianus Zucc.	Synonym		TRO
Cereus martinii Labour.	Unresolved		WCSP (in review)
Cereus martinii Mart. ex Lem.	Unresolved		WCSP (in review)
Cereus martinii Dupuis	Synonym		WCSP (in review)
Cereus martinii var. perviridis Weing.	Unresolved		WCSP (in review)
Cereus matucanensis Backeb.	Unresolved		TRO
Cereus maximiliani Britton & Rose	Unresolved		TRO
Cereus maxonii (Rose) Vaupel	Unresolved		WCSP (in review)
Cereus maynardii Paxton	Unresolved		TRO
Cereus megalanthus K.Schum. ex Vaupel	Unresolved		WCSP (in review)
Cereus melanacanthus (K.Schum.) Schelle	Synonym		WCSP (in review)
Cereus melanostele (Vaupel) A.Berger	Unresolved		WCSP (in review)
Cereus melanostele (Vaupel) Werderm.	Synonym		TRO
Cereus melanotrichus K.Schum.	Synonym		WCSP (in review)
Cereus melanurus K.Schum.	Synonym		WCSP (in review)
Cereus melocactus (Vell.) A.Berger	Synonym		WCSP (in review)
Cereus melocactus Vell.	Synonym		TRO
Cereus mendory Pfeiff.	Synonym		WCSP (in review)
Cereus meonacanthus Link & Otto ex Steud.	Synonym		WCSP (in review)
Cereus merkeri (Hildm.) A.Berger	Synonym		WCSP (in review)
Cereus mexicanus Lem. ex C.F.Först. [Unplaced]	Unresolved		WCSP (in review)
Cereus meyenii (Britton & Rose) Werderm.	Synonym		WCSP (in review)
Cereus micracanthus DC. [Unplaced]	Unresolved		WCSP (in review)
Cereus micranthus Vaupel	Unresolved		WCSP (in review)
Cereus microspermus Werderm. & Backeb.	Synonym		WCSP (in review)
Cereus microsphaericus K.Schum.	Synonym		WCSP (in review)
Cereus mieckleyanus Weing.	Synonym		WCSP (in review)
Cereus milesimus Rost	Synonym		WCSP (in review)
Cereus militaris Audot	Synonym		WCSP (in review)
Cereus millspaughii (Britton) Vaupel	Unresolved		WCSP (in review)
Cereus minensis Werderm.	Synonym		WCSP (in review)
Cereus minor Weing.	Unresolved		TRO
Cereus minutiflorus (Britton & Rose) Vaupel	Unresolved		WCSP (in review)
Cereus mirabella N.P.Taylor	Accepted		WCSP (in review)
Cereus miravallensis A.Weber [Unplaced]	Unresolved		WCSP (in review)
Cereus mirbelii Pfeiff.	Synonym		WCSP (in review)
Cereus mixtecensis J.A.Purpus	Unresolved		WCSP (in review)
Cereus moennighoffi Fisch.	Synonym		TRO
Cereus × moenninghoffii D.F.Fisch.	Synonym		WCSP (in review)
Cereus mohavensis S.Watson	Synonym		WCSP (in review)
Cereus mojavensis Engelm. & Bigelow	Synonym		WCSP (in review)
Cereus mojavensis Engelm. & J.M. Bigelow	Synonym		TRO
Cereus mojavensis var. zuniensis Engelm.	Synonym		WCSP (in review)
Cereus mollis Pfeiff.	Synonym		WCSP (in review)
Cereus monacanthus Lem.	Unresolved		WCSP (in review)
Cereus monacanthus Cels ex K.Schum.	Unresolved		WCSP (in review)
Cereus moniliformis DC.	Unresolved		WCSP (in review)
Cereus monoclonus DC.	Unresolved		WCSP (in review)
Cereus monstrosus Steud.	Synonym		WCSP (in review)
Cereus monstruosus K.Schum.	Synonym		WCSP (in review)
Cereus montevidensis Pfeiff.	Synonym		WCSP (in review)
Cereus montezumae Pfeiff.	Synonym		WCSP (in review)
Cereus monvilleanus F.A.C.Weber ex K.Schum. [Unplaced]	Unresolved		WCSP (in review)
Cereus moritzianus Otto	Synonym		WCSP (in review)
Cereus mortensenii (Croizat) D.R.Hunt & N.P.Taylor	Accepted		WCSP (in review)
Cereus multangularis (Willd.) Haw.	Unresolved		WCSP (in review)
Cereus multangularis var. limensis (Salm-Dyck) C.A.Maass	Unresolved		WCSP (in review)
Cereus multangularis var. pallidior Pfeiff.	Synonym		TRO
Cereus multangularis var. rufispinus Haw. ex Fobe	Unresolved		WCSP (in review)
Cereus multiangularis Haw.	Synonym		TRO
Cereus multicostatus Cels	Unresolved		TRO
Cereus multiplex Pfeiff.	Synonym		WCSP (in review)
Cereus munzii Parish	Synonym		WCSP (in review)
Cereus murillii (Britton & Rose) A.Berger	Unresolved		WCSP (in review)
Cereus myosurus Salm-Dyck ex DC.	Synonym		WCSP (in review)
Cereus myriocaulon Mart. ex Pfeiff.	Synonym		WCSP (in review)
Cereus myriophyllus Gillies ex Otto	Synonym		WCSP (in review)
Cereus nanus (Kunth) DC.	Synonym		WCSP (in review)
Cereus napoleonis Graham	Synonym		WCSP (in review)
Cereus nashii (Britton) Vaupel	Unresolved		WCSP (in review)
Cereus nelsonii Weing.	Synonym		WCSP (in review)
Cereus neomexicanus (Standl.) Tidestr.	Synonym		WCSP (in review)
Cereus neonesioticus (F.Ritter) P.J.Braun	Synonym		WCSP (in review)
Cereus neonesioticus var. interior (F.Ritter) P.J.Braun	Synonym		WCSP (in review)
Cereus neotetragonus Backeb.	Accepted		WCSP (in review)
Cereus nesioticus K.Schum. ex B.L.Rob.	Synonym		WCSP (in review)
Cereus neumannii K.Schum. ex Loes.	Unresolved		WCSP (in review)
Cereus nickelsii Gürke [Unplaced]	Unresolved		WCSP (in review)
Cereus niger Salm-Dyck [Unplaced]	Unresolved		WCSP (in review)
Cereus nigricans Pfeiff.	Synonym		WCSP (in review)
Cereus nigricans Lem. [Illegitimate]	Unresolved		WCSP (in review)
Cereus nigripilis Phil.	Synonym		WCSP (in review)
Cereus nigrispinus Labour. ex K. Schum.	Unresolved		TRO
Cereus nitens Salm-Dyck ex Otto & Dietr.	Synonym		WCSP (in review)
Cereus nitidus Salm-Dyck	Synonym		WCSP (in review)
Cereus nobilis Haw.	Unresolved		WCSP (in review)
Cereus northumberlandianus Lamb. [Unplaced]	Unresolved		WCSP (in review)
Cereus nothus Blume	Unresolved		TRO
Cereus nothus Wendland	Unresolved		TRO
Cereus nudiflorus Engelm. ex Sauvalle	Synonym		WCSP (in review)
Cereus nyctago A.Berger	Unresolved		WCSP (in review)
Cereus nycticalis Link	Synonym		WCSP (in review)
Cereus nycticalis var. armatus K.Schum.	Synonym		WCSP (in review)
Cereus obtusangulus K.Schum.	Synonym		WCSP (in review)
Cereus obtusus Haw.	Synonym		WCSP (in review)
Cereus obtusus Pfeiff.	Synonym		WCSP (in review)
Cereus ocamponis Salm-Dyck	Unresolved		WCSP (in review)
Cereus ochracanthus Pfeiff.	Unresolved		WCSP (in review)
Cereus octacanthus (Mufehleupf.) Coult.	Synonym		WCSP (in review)
Cereus octogonus Otto	Synonym		WCSP (in review)
Cereus olfersii Salm-Dyck [Unplaced]	Unresolved		WCSP (in review)
Cereus oligolepis Vaupel	Unresolved		WCSP (in review)
Cereus olivaceus Lem. [Unplaced]	Unresolved		WCSP (in review)
Cereus ophites Lem.	Synonym		TRO
Cereus × orcuttii K.Brandegee	Synonym		WCSP (in review)
Cereus orcuttii Brandegee	Synonym		TRO
Cereus ovatus G.Don	Unresolved		WCSP (in review)
Cereus oxygonus (Link) Otto	Synonym		WCSP (in review)
Cereus oxygonus Salm-Dyck ex C.F.Först. [Illegitimate]	Unresolved		WCSP (in review)
Cereus oxypetalus DC.	Synonym		WCSP (in review)
Cereus pacalaensis Backeb. [Invalid]	Unresolved		WCSP (in review)
Cereus pachanoi (Britton & Rose) Werderm.	Synonym		WCSP (in review)
Cereus pachyrrhizus K.Schum.	Accepted		WCSP (in review)
Cereus pacificus Coult.	Synonym		WCSP (in review)
Cereus palmeri F.A.C.Weber	Synonym		WCSP (in review)
Cereus palmeri Engelm. ex J.M.Coult. [Unplaced]	Unresolved		WCSP (in review)
Cereus paniculatus (Lam.) DC.	Unresolved		WCSP (in review)
Cereus panoplaeatus Cels ex Salm-Dyck	Synonym		WCSP (in review)
Cereus panoplaeatus Monv.	Synonym		TRO
Cereus papillosus (Linke) A.Berger	Synonym		WCSP (in review)
Cereus paradisiacus Vaupel	Unresolved		WCSP (in review)
Cereus paradoxus Steud.	Unresolved		WCSP (in review)
Cereus paraensis Huber	Unresolved		TRO
Cereus paraguayensis K.Schum. ex Chodat & Hassl. [Unplaced]	Unresolved		WCSP (in review)
Cereus parasiticus Haw. ex Steud.	Synonym		WCSP (in review)
Cereus parviflorus K.Schum.	Synonym		WCSP (in review)
Cereus parvisetus Pfeiff. [Unplaced]	Unresolved		WCSP (in review)
Cereus parvulus K.Schum.	Synonym		WCSP (in review)
Cereus pasacana (F.A.C.Weber) F.A.C.Weber	Synonym		WCSP (in review)
Cereus patagonicus F.A.C.Weber ex Speg.	Synonym		WCSP (in review)
Cereus paucispinus Engelm. & Bigelow	Synonym		WCSP (in review)
Cereus paucispinus Engelm.	Synonym		TRO
Cereus paulensis (Speg.) Werderm.	Synonym		WCSP (in review)
Cereus paxtonianus Monv. ex Salm-Dyck	Accepted		WCSP (in review)
Cereus peanii Beguin	Unresolved		TRO
Cereus pecten-aboriginum Engelm. ex S.Watson	Synonym		WCSP (in review)
Cereus pectinatus (Scheidw.) Engelm.	Synonym		WCSP (in review)
Cereus pectinatus f. adustus (Engelm.) Voss	Synonym		WCSP (in review)
Cereus pectinatus var. armatus Poselg.	Synonym		WCSP (in review)
Cereus pectinatus var. centralis Coult.	Unresolved		WCSP (in review)
Cereus pectinatus var. rigidissimus Engelm.	Synonym		WCSP (in review)
Cereus pectinatus f. rufispinus (Engelm.) Voss	Synonym		WCSP (in review)
Cereus pectinifer Labour.	Unresolved		TRO
Cereus pectiniferus Labour.	Synonym		WCSP (in review)
Cereus pellucidus Pfeiff. [Unplaced]	Unresolved		WCSP (in review)
Cereus penicillatus Gürke	Synonym		WCSP (in review)
Cereus pensilis Brandegee [Unplaced]	Unresolved		WCSP (in review)
Cereus pentaedrophorus Labour.	Unresolved		WCSP (in review)
Cereus pentagonus (L.) Haw.	Synonym		WCSP (in review)
Cereus pentagonus C.F.Först. [Illegitimate]	Synonym		WCSP (in review)
Cereus pentalophorus Labour.	Unresolved		TRO
Cereus pentalophus DC.	Synonym		WCSP (in review)
Cereus pentalophus var. radicans DC.	Synonym		WCSP (in review)
Cereus pentalophus var. simplex DC.	Synonym		WCSP (in review)
Cereus pentalophus var. subarticulatus DC.	Synonym		WCSP (in review)
Cereus pentapterus Otto ex Salm-Dyck [Unplaced]	Unresolved		WCSP (in review)
Cereus pepinianus Lem. ex Salm-Dyck	Synonym		WCSP (in review)
Cereus perlucens K.Schum.	Synonym		WCSP (in review)
Cereus pernambucensis Lem.	Unresolved		TRO
Cereus perotetti Pfeiff.	Unresolved		TRO
Cereus perrottetianus Lem.	Unresolved		TRO
Cereus perrottetii Pfeiff.	Synonym		WCSP (in review)
Cereus peruvianus (L.) Mill.	Synonym		WCSP (in review)
Cereus peruvianus C.F.Först.	Synonym		WCSP (in review)
Cereus peruvianus var. alacriportanus (Pfeiff.) K.Schum.	Unresolved		WCSP (in review)
Cereus perviridis Weing.	Unresolved		TRO
Cereus pfeifferi Parm. ex Pfeiff. [Unplaced]	Unresolved		WCSP (in review)
Cereus pfersdorffii Hildm. ex K.Schum.	Unresolved		WCSP (in review)
Cereus phaeacanthus Gürke	Synonym		WCSP (in review)
Cereus phaeacanthus var. breviflorus (F.Ritter) P.J.Braun	Synonym		WCSP (in review)
Cereus phatnospermus K.Schum.	Accepted		WCSP (in review)
Cereus phatnospermus subsp. adelmarii (Rizzini & A.Mattos) P.J.Braun & Esteves	Accepted		WCSP (in review)
Cereus phatnospermus subsp. kroenleinii (N.P.Taylor) P.J.Braun & Esteves	Accepted		WCSP (in review)
Cereus philippii Regel & Schmidt	Unresolved		WCSP (in review)
Cereus phoeniceus Engelm. & Bigelow [Unplaced]	Unresolved		WCSP (in review)
Cereus phoeniceus Engelm.	Synonym		TRO
Cereus phoeniceus var. pacificus Engelm.	Synonym		WCSP (in review)
Cereus phyllanthoides (DC.) DC.	Synonym		WCSP (in review)
Cereus phyllanthus (L.) DC.	Synonym		WCSP (in review)
Cereus piauhyensis Gürke	Unresolved		WCSP (in review)
Cereus pierrebraunianus Esteves	Accepted		WCSP (in review)
Cereus pitajaya DC.	Synonym		WCSP (in review)
Cereus plagiostoma Vaupel	Synonym		WCSP (in review)
Cereus platinospinus Werderm. & Backeb.	Unresolved		WCSP (in review)
Cereus platycarpus Zucc. ex C.F.Först.	Unresolved		WCSP (in review)
Cereus platygonus Salm-Dyck	Unresolved		WCSP (in review)
Cereus platygonus Speg. [Illegitimate]	Synonym		WCSP (in review)
Cereus pleiogonus Labour. [Unplaced]	Unresolved		WCSP (in review)
Cereus plumieri Rol.-Goss.	Synonym		WCSP (in review)
Cereus poco (Backeb.) Blossf.	Synonym		WCSP (in review)
Cereus polyacanthus Engelm.	Synonym		WCSP (in review)
Cereus polyachaetus Rchb. [Unplaced]	Unresolved		WCSP (in review)
Cereus polygonatus Pfeiff.	Synonym		WCSP (in review)
Cereus polygonus (Lam.) DC.	Unresolved		WCSP (in review)
Cereus polylophus DC.	Unresolved		WCSP (in review)
Cereus polymorphus (Gill.) G.Don	Unresolved		WCSP (in review)
Cereus polymorphus C.F.Först.	Unresolved		WCSP (in review)
Cereus polyptychus Lem. [Unplaced]	Unresolved		WCSP (in review)
Cereus polyrhizus F.A.C.Weber	Synonym		WCSP (in review)
Cereus pomanensis F.A.C.Weber ex K.Schum.	Unresolved		WCSP (in review)
Cereus pomanensis var. grossei Weing. ex A.Berger	Synonym		WCSP (in review)
Cereus pomifer Weing.	Synonym		WCSP (in review)
Cereus portoricensis (Britton) Urb.	Unresolved		WCSP (in review)
Cereus poselgeri Coult.	Synonym		WCSP (in review)
Cereus poselgeri Lem.	Synonym		TRO
Cereus poselgerianus (Linke) A.Berger	Synonym		WCSP (in review)
Cereus pottsii Salm-Dyck	Unresolved		WCSP (in review)
Cereus princeps Pfeiff.	Synonym		WCSP (in review)
Cereus pringlei S.Watson	Synonym		WCSP (in review)
Cereus pringlei var. calvus M.E.Jones	Synonym		WCSP (in review)
Cereus prismaticus Salm-Dyck ex DC. [Unplaced]	Unresolved		WCSP (in review)
Cereus prismaticus (Willd.) Haw. ex Steud. [Illegitimate]	Synonym		WCSP (in review)
Cereus prismaticus (Willd.) Haw.	Synonym		TRO
Cereus prismatiformis Pfeiff.	Synonym		WCSP (in review)
Cereus procumbens Engelm.	Synonym		WCSP (in review)
Cereus procumbens A.Gray [Unplaced]	Unresolved		WCSP (in review)
Cereus propinquus Salm-Dyck ex Otto	Synonym		WCSP (in review)
Cereus prostratus (Britton & Rose) Werderm.	Synonym		WCSP (in review)
Cereus proteiformis (Salm-Dyck) Steud.	Unresolved		WCSP (in review)
Cereus pruinatus Rojas Acosta	Unresolved		TRO
Cereus pruinosus (Otto ex Pfeiff.) C.F.Först.	Unresolved		WCSP (in review)
Cereus pseudocaesius Werderm.	Synonym		WCSP (in review)
Cereus pseudomelanostele Werderm. & Backeb.	Unresolved		WCSP (in review)
Cereus pseudosonorensis Gürke [Unplaced]	Unresolved		WCSP (in review)
Cereus pseudospinulosus (Weingi) Weing.	Synonym		WCSP (in review)
Cereus pseudothelegonus Rauh & Backeb.	Synonym		WCSP (in review)
Cereus pterandra Link ex Pfeiff.	Unresolved		TRO
Cereus pteranthus Link ex A.Dietr.	Unresolved		WCSP (in review)
Cereus pterocaulis Pfeiff.	Synonym		WCSP (in review)
Cereus pterogonus Lem. [Unplaced]	Unresolved		WCSP (in review)
Cereus pubiflorus (Britton & Rose) Vaupel	Synonym		WCSP (in review)
Cereus pugionifer K. Schum.	Synonym		TRO
Cereus pugioniferus Lem.	Unresolved		WCSP (in review)
Cereus pulchellus Pfeiff.	Synonym		WCSP (in review)
Cereus purpureopilosus Weing. [Unplaced]	Unresolved		WCSP (in review)
Cereus purpureus (Gürke) Luetzelb.	Synonym		WCSP (in review)
Cereus purpusii Weing.	Unresolved		WCSP (in review)
Cereus pycnacanthus Salm-Dyck	Synonym		WCSP (in review)
Cereus quadrangularis Haw.	Synonym		WCSP (in review)
Cereus quadrangularis Pfeiff.	Synonym		WCSP (in review)
Cereus quadrangulispinus Lem. ex Ehrenb. [Unplaced]	Unresolved		WCSP (in review)
Cereus quadricostatus Bello	Unresolved		WCSP (in review)
Cereus queretaroensis F.A.C.Weber ex Mathes.	Synonym		WCSP (in review)
Cereus quintero Pfeiff.	Synonym		WCSP (in review)
Cereus quisco Gay [Unplaced]	Unresolved		WCSP (in review)
Cereus radicans DC.	Unresolved		WCSP (in review)
Cereus ramosus Karw. ex Pfeiff.	Synonym		WCSP (in review)
Cereus ramulosus Salm-Dyck	Synonym		WCSP (in review)
Cereus recurvus Link & Otto ex Steud.	Synonym		WCSP (in review)
Cereus reductus DC.	Unresolved		WCSP (in review)
Cereus reductus Link	Synonym		TRO
Cereus reflexus Steud.	Synonym		WCSP (in review)
Cereus regalis Haw. ex Spreng. [Unplaced]	Unresolved		WCSP (in review)
Cereus regelii Weing.	Unresolved		WCSP (in review)
Cereus reichenbachianus Labour.	Synonym		WCSP (in review)
Cereus remolinensis Backeb.	Synonym		WCSP (in review)
Cereus repandus (L.) Mill.	Accepted		WCSP (in review)
Cereus repandus Haw.	Unresolved		TRO
Cereus reptans Salm-Dyck ex DC.	Unresolved		WCSP (in review)
Cereus reptans Haw. ex Steud.	Synonym		WCSP (in review)
Cereus resupinatus Salm-Dyck [Unplaced]	Unresolved		WCSP (in review)
Cereus retroflexus Pfeiff.	Synonym		WCSP (in review)
Cereus rhodacanthus (Salm-Dyck) F.A.C. Weber	Synonym		TRO
Cereus rhodanthus Gürke	Synonym		WCSP (in review)
Cereus rhodocephalus Lem.	Unresolved		TRO
Cereus rhodoleucanthus K.Schum.	Unresolved		WCSP (in review)
Cereus rhombeus Salm-Dyck	Unresolved		WCSP (in review)
Cereus ridleii Andrade-Lima ex Backeb.	Synonym		WCSP (in review)
Cereus rigidispinus Lem. [Unplaced]	Unresolved		WCSP (in review)
Cereus rigidispinus Muehlenpf. [Unplaced]	Unresolved		WCSP (in review)
Cereus rigidus Lem. ex Salm-Dyck	Synonym		WCSP (in review)
Cereus ritteri P.J.Braun & Esteves	Unresolved		WCSP (in review)
Cereus ritteri subsp. parapetiensis (F.Ritter) P.J.Braun & Esteves	Synonym		WCSP (in review)
Cereus robinii (Lem.) L.D.Benson	Unresolved		WCSP (in review)
Cereus robinii var. deeringii (Small) L.D.Benson	Unresolved		WCSP (in review)
Cereus robinii var. keyensis (Britton & Rose) L.D. Benson	Synonym		TRO
Cereus robustus Lawr. [Unplaced]	Unresolved		WCSP (in review)
Cereus roemeri Muehlenpf.	Synonym		WCSP (in review)
Cereus roemeri Engelm.	Synonym		WCSP (in review)
Cereus × roetteri Engelm.	Synonym		WCSP (in review)
Cereus roetteri Engelm.	Synonym		TRO
Cereus roezlii F.Haage ex K.Schum.	Unresolved		WCSP (in review)
Cereus roezlii Backeb.	Synonym		WCSP (in review)
Cereus rogalli K. Schum.	Unresolved		TRO
Cereus roridus Pfeiff.	Synonym		WCSP (in review)
Cereus rosaceus Pfeiff.	Synonym		WCSP (in review)
Cereus roseanus Vaupel	Unresolved		WCSP (in review)
Cereus rosei Werderm.	Unresolved		WCSP (in review)
Cereus roseiflorus Speg.	Synonym		WCSP (in review)
Cereus rostratus Lem. [Unplaced]	Unresolved		WCSP (in review)
Cereus rothii Weing.	Synonym		WCSP (in review)
Cereus royenii (L.) Mill.	Unresolved		WCSP (in review)
Cereus royenii Haw. [Illegitimate]	Synonym		WCSP (in review)
Cereus ruber Weing. [Unplaced]	Unresolved		WCSP (in review)
Cereus ruferi Lipsch.	Unresolved		TRO
Cereus ruficeps (F.A.C.Weber) Vaupel	Unresolved		WCSP (in review)
Cereus rufispinus (Engelm.) Engelm.	Synonym		WCSP (in review)
Cereus russelianus Otto [Illegitimate]	Synonym		WCSP (in review)
Cereus russelianus Salm-Dyck	Synonym		TRO
Cereus russellianus Gardner	Synonym		WCSP (in review)
Cereus saddianus (Rizzini & A.Mattos) P.J.Braun	Accepted		WCSP (in review)
Cereus salm-dyckianus Salm-Dyck	Synonym		WCSP (in review)
Cereus salm-dyckianus Hemsl.	Synonym		WCSP (in review)
Cereus salmianus Cels in Weber	Synonym		TRO
Cereus salpingensis K. Schum.	Unresolved		TRO
Cereus sanborgianus Coult.	Synonym		WCSP (in review)
Cereus santiaguensis Speg.	Synonym		WCSP (in review)
Cereus sargentianus Orcutt	Synonym		WCSP (in review)
Cereus sartorianus Kupper ex A.Berger [Unplaced]	Unresolved		WCSP (in review)
Cereus sartorianus (Rose) Kupper ex Berger	Synonym		TRO
Cereus saxicola Morong	Synonym		TRO
Cereus saxicolus Morong	Unresolved		WCSP (in review)
Cereus saxicolus var. anguiniformis Riccob.	Unresolved		WCSP (in review)
Cereus scandens Salm-Dyck	Synonym		WCSP (in review)
Cereus scheerii Salm-Dyck	Unresolved		WCSP (in review)
Cereus schelhasii Pfeiff.	Synonym		WCSP (in review)
Cereus schenckii J.A.Purpus	Unresolved		WCSP (in review)
Cereus schickendantzii A.A.Weber ex K.Schum.	Synonym		WCSP (in review)
Cereus schickendantzii F.A.C. Weber	Synonym		TRO
Cereus schmidtii G. Don	Unresolved		TRO
Cereus schmollii Weing.	Synonym		WCSP (in review)
Cereus schoenemannii Hildmann	Unresolved		TRO
Cereus schomburgkii Salm-Dyck [Unplaced]	Unresolved		WCSP (in review)
Cereus schomburgkii Otto ex K.Schum. [Unplaced]	Unresolved		WCSP (in review)
Cereus schomburgkii FORSTER	Synonym		TRO
Cereus schottii Engelm.	Synonym		WCSP (in review)
Cereus schottii var. australis K.Brandegee	Synonym		WCSP (in review)
Cereus schrankii Zucc. ex Seitz	Unresolved		WCSP (in review)
Cereus schumannii Mathsson ex K.Schum	Unresolved		WCSP (in review)
Cereus sciurus Brandegee	Synonym		WCSP (in review)
Cereus sclerocarpus K.Schum. ex B.L.Rob.	Unresolved		WCSP (in review)
Cereus scopa Salm-Dyck ex DC.	Synonym		WCSP (in review)
Cereus scoparius (Poselg.) A.Berger	Unresolved		WCSP (in review)
Cereus seidelii Lehm. ex Salm-Dyck	Synonym		WCSP (in review)
Cereus senilis (Haw.) Salm-Dyck ex DC.	Synonym		WCSP (in review)
Cereus sepium (Kunth) DC.	Synonym		WCSP (in review)
Cereus sericatus Backeb.	Synonym		WCSP (in review)
Cereus sericeus Pfeiff.	Unresolved		WCSP (in review)
Cereus sericifer (F.Ritter) P.J.Braun	Synonym		WCSP (in review)
Cereus serpens (Kunth) DC.	Synonym		WCSP (in review)
Cereus serpentinus (Lag. & Rodr.) DC.	Synonym		WCSP (in review)
Cereus serpentinus var. splendens Salm-Dyck ex Lem.	Synonym		TRO
Cereus serratus Weing. [Unplaced]	Unresolved		WCSP (in review)
Cereus serruliflorus Haw.	Unresolved		WCSP (in review)
Cereus setaceus Salm-Dyck ex DC.	Synonym		WCSP (in review)
Cereus setiger Haw. [Unplaced]	Unresolved		WCSP (in review)
Cereus setosus (Gürke) Vaupel	Synonym		WCSP (in review)
Cereus sextonianus Backeb. [Invalid]	Synonym		WCSP (in review)
Cereus siedelii Lehm. ex Salm-Dyck [Unplaced]	Unresolved		WCSP (in review)
Cereus silvestrii Speg.	Synonym		WCSP (in review)
Cereus silvestrii var. crassicaulis Backeb.	Synonym		WCSP (in review)
Cereus similis Meinsh. [Unplaced]	Unresolved		WCSP (in review)
Cereus simonii Hildmann	Unresolved		TRO
Cereus sirul F.A.C.Weber [Unplaced]	Unresolved		WCSP (in review)
Cereus smaragdiflorus Speg.	Synonym		WCSP (in review)
Cereus smaragdiflorus (F.A.C. Weber) F.A.C. Weber	Synonym		TRO
Cereus × smithianus Sweet [Invalid]	Unresolved		WCSP (in review)
Cereus smithianus (Britton & Rose) Werderm.	Synonym		WCSP (in review)
Cereus × smithii Pfeiff.	Synonym		WCSP (in review)
Cereus sonorensis K.Schum.	Unresolved		WCSP (in review)
Cereus spachianus Lem.	Synonym		WCSP (in review)
Cereus spathulatus FORSTER	Unresolved		TRO
Cereus speciosissimus (Desf.) Sweet	Unresolved		WCSP (in review)
Cereus speciosissimus (Desf.) DC.	Accepted		TRO
Cereus speciosus (Cav.) Sweet	Unresolved		WCSP (in review)
Cereus speciosus Cav.	Synonym		TRO
Cereus speciosus var. amecamensis (Heese in Rother) Weing.	Synonym		TRO
Cereus spegazzinii F.A.C.Weber	Accepted		WCSP (in review)
Cereus spegazzinii var. ebenacanthus (F.Ritter) P.J.Braun & Esteves	Synonym		WCSP (in review)
Cereus speggazzini F.A.C. Weber	Unresolved		TRO
Cereus spinibarbis Pfeiff.	Synonym		WCSP (in review)
Cereus spinosissimus C.F.Först. [Unplaced]	Unresolved		WCSP (in review)
Cereus spinulosus DC.	Synonym		WCSP (in review)
Cereus splendens Salm-Dyck [Unplaced]	Unresolved		WCSP (in review)
Cereus splendidus (Paxton) Steud.	Unresolved		WCSP (in review)
Cereus squamosus Gürke	Synonym		WCSP (in review)
Cereus squamulosus Salm-Dyck ex DC.	Synonym		WCSP (in review)
Cereus squarrosus Vaupel	Synonym		WCSP (in review)
Cereus steckmannii Jacobi	Unresolved		TRO
Cereus stellatus Pfeiff.	Unresolved		WCSP (in review)
Cereus stenogonus K.Schum.	Accepted		WCSP (in review)
Cereus stenopterus A.Weber	Unresolved		WCSP (in review)
Cereus stolonifer F.A.C. Weber ex K. Schum.	Unresolved		TRO
Cereus stramineus Engelm.	Synonym		WCSP (in review)
Cereus straussii (Heese) Vaupel	Unresolved		WCSP (in review)
Cereus striatus Brandegee	Unresolved		WCSP (in review)
Cereus strictus (Willd.) DC.	Synonym		WCSP (in review)
Cereus strigosus Salm-Dyck	Synonym		WCSP (in review)
Cereus strigosus var. intricatus (Salm-Dyck) F.A.C.Weber ex K.Schum.	Synonym		WCSP (in review)
Cereus strigosus var. longispinus C.A.Maass	Synonym		WCSP (in review)
Cereus subinermis Hemsl.	Synonym		WCSP (in review)
Cereus subintortus Salm-Dyck ex Forster	Unresolved		TRO
Cereus sublanatus Salm-Dyck	Unresolved		WCSP (in review)
Cereus subrepandus Haw. [Unplaced]	Unresolved		WCSP (in review)
Cereus subrepandus Pfeiff. [Illegitimate]	Unresolved		WCSP (in review)
Cereus subsquamatus Pfeiff.	Unresolved		WCSP (in review)
Cereus subtortuosus C.F.Först.	Synonym		WCSP (in review)
Cereus subulifer Salm-Dyck	Unresolved		TRO
Cereus subuliferus Salm-Dyck [Unplaced]	Unresolved		WCSP (in review)
Cereus superbus Ehrenb. [Unplaced]	Unresolved		WCSP (in review)
Cereus surinamensis Trew	Unresolved		TRO
Cereus swartzii Griseb.	Unresolved		WCSP (in review)
Cereus syringacanthus Pfeiff.	Unresolved		TRO
Cereus syringscanthus Pfeiff.	Unresolved		WCSP (in review)
Cereus tacaquirensis Vaupel	Synonym		WCSP (in review)
Cereus tacuaralensis Cárdenas	Accepted		WCSP (in review)
Cereus tacuaremboensis (Arechav.) Herter	Unresolved		WCSP (in review)
Cereus tapacalaensis Backeb. [Unplaced]	Unresolved		WCSP (in review)
Cereus tarijensis Vaupel	Synonym		WCSP (in review)
Cereus taylorii (Britton) Vaupel	Unresolved		WCSP (in review)
Cereus tehuacanensis Roezl	Unresolved		WCSP (in review)
Cereus tehuacanus Roezl [Unplaced]	Unresolved		WCSP (in review)
Cereus tehuacanus (Weing.) Werderm. [Illegitimate]	Unresolved		WCSP (in review)
Cereus tellii Griseb.	Unresolved		TRO
Cereus tenellus Salm-Dyck ex Pfeiff. [Unplaced]	Unresolved		WCSP (in review)
Cereus tenuis DC.	Synonym		WCSP (in review)
Cereus tenuis Pfeiff. [Unplaced]	Unresolved		WCSP (in review)
Cereus tenuispinus Haw.	Synonym		WCSP (in review)
Cereus tephracanthus Link & Otto ex Steud.	Unresolved		WCSP (in review)
Cereus tephracanthus var. bolivianus F.A.C.Weber ex K.Schum.	Unresolved		WCSP (in review)
Cereus terscheckii Parm. ex Pfeiff.	Synonym		WCSP (in review)
Cereus testudo Karw. ex Zucc.	Synonym		WCSP (in review)
Cereus tetazo J.M. Coult.	Synonym		TRO
Cereus tetetzo F.A.C.Weber ex J.M.Coult.	Synonym		WCSP (in review)
Cereus tetracanthus Labour.	Unresolved		WCSP (in review)
Cereus tetragonus (L.) Mill.	Synonym		WCSP (in review)
Cereus thalassinus Otto & A.Dietr.	Synonym		WCSP (in review)
Cereus thelegonoides Speg.	Synonym		WCSP (in review)
Cereus thelegonus F.A.C.Weber ex K.Schum.	Synonym		WCSP (in review)
Cereus thouarsii F.A.C.Weber	Unresolved		WCSP (in review)
Cereus thurberi Engelm.	Unresolved		WCSP (in review)
Cereus thurberi var. littoralis K.Brandegee	Unresolved		WCSP (in review)
Cereus tilophorus Pfeiff.	Unresolved		WCSP (in review)
Cereus tilophorus Pfeiff. ex Labour.	Synonym		TRO
Cereus tinei Tod. [Unplaced]	Unresolved		WCSP (in review)
Cereus titan Engelm. ex J.M.Coult.	Synonym		WCSP (in review)
Cereus tominensis Weing.	Synonym		WCSP (in review)
Cereus tonduzii F.A.C.Weber	Unresolved		WCSP (in review)
Cereus tonelianus Lem. [Unplaced]	Unresolved		WCSP (in review)
Cereus torrellianus Miers	Unresolved		TRO
Cereus tortuosus F.B.Forbes ex Otto & Dietr. [Illegitimate]	Unresolved		WCSP (in review)
Cereus tortus FORSTER	Unresolved		TRO
Cereus torulosus Werderm. [Unplaced]	Unresolved		WCSP (in review)
Cereus treleasei (Rose) Vaupel	Unresolved		WCSP (in review)
Cereus triangularis Mill.	Unresolved		WCSP (in review)
Cereus triangularis Haw. [Illegitimate]	Synonym		WCSP (in review)
Cereus trichacanthus Salm-Dyck	Synonym		WCSP (in review)
Cereus trichocentrus FORSTER	Unresolved		TRO
Cereus tricostatus Rol.-Goss.	Synonym		WCSP (in review)
Cereus triglochidiatus Engelm.	Synonym		WCSP (in review)
Cereus trigonodendron K.Schum. ex Vaupel	Accepted		WCSP (in review)
Cereus trigonus Haw.	Synonym		WCSP (in review)
Cereus trigonus Pfeiff. [Illegitimate]	Synonym		WCSP (in review)
Cereus trigonus var. costaricensis (Britton & Rose) F.A.C.Weber	Synonym		WCSP (in review)
Cereus trigonus var. guatemalensis Eichler	Synonym		WCSP (in review)
Cereus trinitatensis Lem. & Herm.	Synonym		WCSP (in review)
Cereus tripteris Salm-Dyck ex DC. [Unplaced]	Unresolved		WCSP (in review)
Cereus triqueter Haw. [Unplaced]	Unresolved		WCSP (in review)
Cereus trollii Kupper	Unresolved		WCSP (in review)
Cereus truncatus Sweet	Synonym		WCSP (in review)
Cereus tuberosus Pfeiff. [Unplaced]	Unresolved		WCSP (in review)
Cereus tuberosus Poselg. [Illegitimate]	Synonym		WCSP (in review)
Cereus tubiflorus Pfeiff.	Synonym		WCSP (in review)
Cereus tubiflorus Endl.	Unresolved		WCSP (in review)
Cereus tunicatus (Lehm.) Link & Otto	Synonym		TRO
Cereus tunilla F.A.C.Weber	Unresolved		WCSP (in review)
Cereus tupizensis Vaupel	Synonym		WCSP (in review)
Cereus turbinatus Pfeiff.	Synonym		WCSP (in review)
Cereus tweediei Hook.	Synonym		WCSP (in review)
Cereus tweedyanus (Britton & Rose) Werderm.	Unresolved		WCSP (in review)
Cereus ulei (K.Schum.) A.Berger	Synonym		WCSP (in review)
Cereus ulei (K.Schum.) Luetzelb. [Illegitimate]	Synonym		WCSP (in review)
Cereus undatus Haw.	Synonym		WCSP (in review)
Cereus undatus Pfeiff.	Synonym		WCSP (in review)
Cereus undiflorus C.Wright [Unplaced]	Unresolved		WCSP (in review)
Cereus undulatus Pfeiff.	Synonym		WCSP (in review)
Cereus undulatus D.Dietr.	Synonym		WCSP (in review)
Cereus undulatus DC.	Synonym		TRO
Cereus undulosus DC.	Synonym		WCSP (in review)
Cereus uranos (auct.) Schelle	Synonym		WCSP (in review)
Cereus urbanianus (K.Schum.) A.Berger	Unresolved		WCSP (in review)
Cereus urbanianus Gürke & Weing.	Unresolved		WCSP (in review)
Cereus ureacanthus C.F.Först. [Unplaced]	Unresolved		WCSP (in review)
Cereus uruguayanus R. Kiesling	Accepted		TRO
Cereus uspenski Haage Jr. ex Karl Hirscht	Unresolved		TRO
Cereus vagans K.Brandegee	Synonym		WCSP (in review)
Cereus validissimus F.A.C. Weber	Unresolved		TRO
Cereus validus Haw.	Synonym		WCSP (in review)
Cereus vargasianus Cárdenas	Accepted		WCSP (in review)
Cereus variabilis Pfeiff.	Synonym		WCSP (in review)
Cereus variabilis Engelm.	Synonym		WCSP (in review)
Cereus vasmerii Young	Synonym		WCSP (in review)
Cereus vaupelii Weing.	Synonym		WCSP (in review)
Cereus venditus Paulsen	Synonym		WCSP (in review)
Cereus venezuelensis (Britton & Rose) Werderm.	Synonym		WCSP (in review)
Cereus ventimigliae (Riccob.) Vaupel	Synonym		WCSP (in review)
Cereus verschaffeltii Haage in Schumann	Unresolved		TRO
Cereus versicolor Werderm. & Backeb.	Unresolved		WCSP (in review)
Cereus versicolor var. humifusus Werderm. & Backeb.	Unresolved		WCSP (in review)
Cereus versicolor var. xanthacanthus Werderm. & Backeb.	Unresolved		WCSP (in review)
Cereus victoriensis Vaupel	Unresolved		WCSP (in review)
Cereus violaceus Lem. [Unplaced]	Unresolved		WCSP (in review)
Cereus viperinus A.A.Weber	Unresolved		WCSP (in review)
Cereus virens DC. [Unplaced]	Unresolved		WCSP (in review)
Cereus viridiflorus Engelm.	Synonym		WCSP (in review)
Cereus viridiflorus var. cylindricus Engelm.	Synonym		WCSP (in review)
Cereus viridiflorus var. minor Engelm.	Synonym		WCSP (in review)
Cereus viridiflorus var. tubulosus J.M.Coult.	Synonym		WCSP (in review)
Cereus vulcan Müll. Arg.	Unresolved		TRO
Cereus vulnerator Cortes	Unresolved		TRO
Cereus warmingii K.Schum. [Unplaced]	Unresolved		WCSP (in review)
Cereus weberbaueri K.Schum. ex Vaupel [Unplaced]	Unresolved		WCSP (in review)
Cereus weberi J.M.Coult	Synonym		WCSP (in review)
Cereus weingartianus Hartm. [Unplaced]	Unresolved		WCSP (in review)
Cereus weingartianus A.Berger [Illegitimate]	Unresolved		WCSP (in review)
Cereus wercklei A.Weber	Unresolved		WCSP (in review)
Cereus wittii K.Schum.	Synonym		WCSP (in review)
Cereus xanthocarpus K.Schum.	Unresolved		WCSP (in review)
Cereus xanthochaetus Rchb. [Unplaced]	Unresolved		WCSP (in review)
Cereus yucatanensis Standl.	Synonym		WCSP (in review)
Cereus yunckeri Standl.	Unresolved		WCSP (in review)
Cereus yungasensis A. Fuentes & N. Quispe A.	Unresolved		TRO
Cereus zehntneri (Britton & Rose) Luetzelb.	Synonym		WCSP (in review)
Cereus zizkaanus (K.Schum.) Schelle	Synonym		WCSP (in review)