The Plant List — A working list for all plant species

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358 plant name records match your search criteria Melocactus. The results are below.

The names found have these generic epithets:

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

Name Status Confi­dence level Source Date supplied
Melocactus aciculosus J.V.Suringar Unresolved L WCSP (in review)
Melocactus acispinosus Buining & Brederoo Synonym M TRO
Melocactus actinacanthus Areces Synonym M TRO
Melocactus acuatus Link & Otto Unresolved L WCSP (in review)
Melocactus acunae León Synonym L TRO
Melocactus acunae subsp. lagunaensis Mészáros, Zoltan Synonym L TRO
Melocactus albicephalus Buining & Brederoo Unresolved L WCSP (in review)
Melocactus × albicephalus Buining & Brederoo Unresolved L TRO
Melocactus albispinus Suringar Unresolved L WCSP (in review)
Melocactus alex-bragai P.J.Braun & Esteves Unresolved L WCSP (in review)
Melocactus ambiguus Pfeiff. Unresolved L WCSP (in review)
Melocactus amethystinus Buining & Brederoo Synonym M TRO
Melocactus ammotrophus Buining, Brederoo & C.A.L. Bercht Synonym M TRO
Melocactus amoenus Hoffmanns. Synonym L TRO
Melocactus amstutziae Rauh & Backeb. Synonym L TRO
Melocactus andinus R.Gruber ex N.P.Taylor Accepted M WCSP (in review)
Melocactus angusticostatus Suringar Unresolved L WCSP (in review)
Melocactus antonii (Britton) F.M. Knuth Synonym L TRO
Melocactus appropinquatus J.V.Suringar Unresolved L WCSP (in review)
Melocactus approximatus Suringar Unresolved L WCSP (in review)
Melocactus arcuatispinus Brederoo & Eerkens Synonym M TRO
Melocactus arcuatus Suringar Unresolved L WCSP (in review)
Melocactus argenteus Suringar Unresolved L WCSP (in review)
Melocactus armatus Suringar Unresolved L WCSP (in review)
Melocactus atrosanguineus Pfeiff. Unresolved L WCSP (in review)
Melocactus atrovirens C.F.Först. Unresolved L WCSP (in review)
Melocactus axiniphorus Buining & Brederoo Synonym M TRO
Melocactus azulensis Buining, Brederoo & Theunissen Synonym M TRO
Melocactus azureus Buining & Brederoo Accepted M WCSP (in review)
Melocactus azureus subsp. azureus Synonym L TRO
Melocactus azureus subsp. ferreophilus (Buining & Brederoo) N.P.Taylor Synonym L WCSP (in review)
Melocactus azureus var. krainzianus (Buining & Brederoo) P.J. Braun Synonym L TRO
Melocactus baarscanus Suringar Unresolved L WCSP (in review)
Melocactus baarsianus Suringar Unresolved L WCSP (in review)
Melocactus bahiensis (Britton & Rose) Luetzelb. Accepted M TRO
Melocactus bahiensis f. acispinosus (Buining & Brederoo) N.P. Taylor Accepted L TRO
Melocactus bahiensis subsp. amethystinus (Buining & Brederoo) N.P. Taylor Accepted L TRO
Melocactus bahiensis f. bahiensis Synonym L TRO
Melocactus bahiensis subsp. bahiensis Synonym L TRO
Melocactus bahiensis f. inconcinnus (Buining & Brederoo) N.P. Taylor Accepted L TRO
Melocactus barbarae Antesberger Synonym L TRO
Melocactus bargei J.V.Suringar Unresolved L WCSP (in review)
Melocactus bellavistensis Rauh & Backeb. Accepted M TRO
Melocactus bellavistensis subsp. bellavistensis Synonym L TRO
Melocactus bellavistensis subsp. onychacanthus N.P. Taylor Accepted L TRO
Melocactus besleri Link & Otto Unresolved L WCSP (in review)
Melocactus besleri-affinis Pfeiff. Unresolved L WCSP (in review)
Melocactus bohiensis Britton Unresolved L TRO
Melocactus borhidii Mészáros Unresolved L TRO
Melocactus borhidii Mészáros, Zoltan Synonym L TRO
Melocactus bozsingianus Antesberger Synonym L TRO
Melocactus bradleyi J.V.Suringar Unresolved L WCSP (in review)
Melocactus bradypus Lehm. ex Steud. Unresolved L WCSP (in review)
Melocactus braunii Esteves Accepted M WCSP (in review)
Melocactus brederooianus Buining Synonym M TRO
Melocactus broadwayi (Britton & Rose) A. Berger Accepted L TRO
Melocactus brongnartii Hildm. Unresolved L WCSP (in review)
Melocactus brongniartii Lem. Unresolved L WCSP (in review)
Melocactus buysianus J.V.Suringar Unresolved L WCSP (in review)
Melocactus caesius H.L.Wendl. Synonym M WCSP (in review)
Melocactus caesius var. griseus (H.L. Wendl. ex Miq.) Foerster Synonym L TRO
Melocactus calderanus Eerkens Unresolved L WCSP (in review)
Melocactus canescens F. Ritter Synonym M TRO
Melocactus canescens var. montealtoi F. Ritter Synonym L TRO
Melocactus capillaris Suringar Unresolved L WCSP (in review)
Melocactus caroli-linnaei N.P. Taylor Accepted M TRO
Melocactus cephalenoplus Lem. Synonym M TRO
Melocactus cephalonoplus Lem. ex C.F.Först. Unresolved L WCSP (in review)
Melocactus cephalophora Salm-Dyck Unresolved L WCSP (in review)
Melocactus citrispinus Antesb. Unresolved L WCSP (in review)
Melocactus columna-trajani Pfeiff. Unresolved L WCSP (in review)
Melocactus communis (Aiton) Link & Otto Synonym L TRO
Melocactus communis var. havannensis Pfeiff. Synonym L TRO
Melocactus compactus Suringar Unresolved L WCSP (in review)
Melocactus concinnus Buining & Brederoo Accepted M TRO
Melocactus conicus Lawr. Unresolved L WCSP (in review)
Melocactus conoideus Buining & Brederoo Accepted M TRO
Melocactus conoideus subsp. braunii (Esteves) Guiggi Synonym L WCSP (in review)
Melocactus contortus Suringar Unresolved L WCSP (in review)
Melocactus cordatus J.V.Suringar Unresolved L WCSP (in review)
Melocactus cornutus Suringar Unresolved L WCSP (in review)
Melocactus coronatus (Lam.) Backeb. Accepted L TRO
Melocactus crassicostatus Lem. Synonym M TRO
Melocactus crassispinus Salm-Dyck Unresolved L WCSP (in review)
Melocactus cremnophilus Buining & Brederoo Synonym M TRO
Melocactus croceus J.V.Suringar Unresolved L WCSP (in review)
Melocactus curvicornis Buining & Brederoo Synonym M TRO
Melocactus curvispinus Pfeiff. Accepted M WCSP (in review)
Melocactus curvispinus subsp. caesius (H.L.Wendl.) N.P.Taylor Accepted L WCSP (in review)
Melocactus curvispinus f. caesius (H.L.Wendl.) N.P.Taylor Synonym L WCSP (in review)
Melocactus curvispinus subsp. curvispinus Synonym L TRO
Melocactus curvispinus subsp. dawsonii (Bravo) N.P. Taylor Accepted L TRO
Melocactus curvispinus f. lobelii (J.V. Suringar) N.P. Taylor Accepted L TRO
Melocactus cylindricus J.V.Suringar Unresolved L WCSP (in review)
Melocactus dawsonii Bravo Synonym M TRO
Melocactus deinacanthus Buining & Brederoo Accepted M WCSP (in review)
Melocactus deinacanthus subsp. florschuetzianus (Buining & Brederoo) P.J. Braun Synonym L TRO
Melocactus deinacanthus subsp. longicarpus (Buining & Brederoo) P.J. Braun Synonym L TRO
Melocactus deinacanthus f. mulequensis (Buining & Brederoo) P.J. Braun Synonym L TRO
Melocactus delessertianus Lem. Synonym M TRO
Melocactus depressus Hook. Synonym L TRO
Melocactus dichroacanthus Miq. Unresolved L WCSP (in review)
Melocactus diersianus Buining & Brederoo Synonym M TRO
Melocactus dilatatus Suringar Unresolved L WCSP (in review)
Melocactus douradaensis Hovens & Strecker Synonym M TRO
Melocactus eburneus Suringar Unresolved L WCSP (in review)
Melocactus elegans Pfeiff. Unresolved L WCSP (in review)
Melocactus ellemeetii Miq. Unresolved L WCSP (in review)
Melocactus elongatus Suringar Unresolved L WCSP (in review)
Melocactus ernestii Vaupel Accepted M WCSP (in review)
Melocactus ernestii subsp. ernestii Synonym L TRO
Melocactus ernestii subsp. longicarpus (Buining & Brederoo) N.P. Taylor Accepted L TRO
Melocactus erythracanthus Buining & Brederoo Synonym M TRO
Melocactus estevesii P.J.Braun Accepted M WCSP (in review)
Melocactus euryacanthus Suringar Unresolved L WCSP (in review)
Melocactus eustachianus J.V.Suringar Unresolved L WCSP (in review)
Melocactus evae Mészáros, Zoltan Synonym L TRO
Melocactus evertszianus Suringar Unresolved L WCSP (in review)
Melocactus excavatus G.Don Unresolved L WCSP (in review)
Melocactus extensus Suringar Unresolved L WCSP (in review)
Melocactus ferox Pfeiff. ex C.F.Först. Unresolved L WCSP (in review)
Melocactus ferox Suringar Unresolved L WCSP (in review)
Melocactus ferreophilus Buining & Brederoo Accepted M WCSP (in review)
Melocactus ferus Suringar Unresolved L WCSP (in review)
Melocactus firmus J.V.Suringar Unresolved L WCSP (in review)
Melocactus flammeus Suringar Unresolved L WCSP (in review)
Melocactus flavispinus Suringar Unresolved L WCSP (in review)
Melocactus flexilis Suringar Unresolved L WCSP (in review)
Melocactus flexus Suringar Unresolved L WCSP (in review)
Melocactus florschuetzianus Buining & Brederoo Synonym M TRO
Melocactus fortalezensis Rauh & Backeb. Synonym L TRO
Melocactus gardenerianus Booth ex C.F.Först. Unresolved L WCSP (in review)
Melocactus giganteus Buining & Brederoo Synonym M TRO
Melocactus gilliesii Otto Unresolved L WCSP (in review)
Melocactus gilvispinus J.V.Suringar Unresolved L WCSP (in review)
Melocactus gladiatus Link & Otto Unresolved L WCSP (in review)
Melocactus glaucencens Buining & Brederoo Unresolved L WCSP (in review)
Melocactus glaucescens Buining & Brederoo Accepted M WCSP (in review)
Melocactus glauxianus Brederoo & Bercht Synonym M TRO
Melocactus goniodacanthus Lem. Unresolved L WCSP (in review)
Melocactus gracilis J.V.Suringar Unresolved L WCSP (in review)
Melocactus grandis J.V.Suringar Unresolved L WCSP (in review)
Melocactus grandispinus J.V.Suringar Unresolved L WCSP (in review)
Melocactus grengelii J.Forbes Unresolved L WCSP (in review)
Melocactus griseoloviridis Buining & Brederoo Synonym M TRO
Melocactus griseus H.L. Wendl. ex Miq. Synonym M TRO
Melocactus grisoleoviridis Buining & Brederoo Unresolved L WCSP (in review)
Melocactus guanensis Xhonneux & Fern.Alonso Unresolved L WCSP (in review)
Melocactus guaricensis Croizat Synonym M WCSP (in review)
Melocactus guatemalensis Gürke & Eichlam Synonym M WCSP (in review)
Melocactus guitartii León Synonym M TRO
Melocactus harlowii (Britton & Rose) Vaupel Accepted L TRO
Melocactus harlowii subsp. perezassoi (Areces) Guiggi Accepted L TRO
Melocactus havannensis (Pfeiff.) Miq. Accepted M TRO
Melocactus helvolilanatus Buining & Brederoo Synonym M TRO
Melocactus helvolilanthus Buining & Brederoo Unresolved L WCSP (in review)
Melocactus hernandezii Fern.Alonso & Xhonneux Unresolved L WCSP (in review)
Melocactus hexacanthus Suringar Unresolved L WCSP (in review)
Melocactus hispaniolicus Vaupel Unresolved L WCSP (in review)
Melocactus holguinensis Areces Synonym M TRO
Melocactus hookeri Lawr. Unresolved L WCSP (in review)
Melocactus hookeri J.V.Suringar Unresolved L WCSP (in review)
Melocactus hookerianus Forbes ex C.F.Först. Unresolved L WCSP (in review)
Melocactus horridus Werderm. Unresolved L WCSP (in review)
Melocactus × horridus Werderm. Unresolved L TRO
Melocactus huallancensis Rauh & Backeb. Synonym L TRO
Melocactus humilis Suringar Synonym M WCSP (in review)
Melocactus hystrix Parm. ex Miq. Unresolved L WCSP (in review)
Melocactus inclinatus Antesb. Unresolved L WCSP (in review)
Melocactus inconcinnus Buining & Brederoo Synonym M TRO
Melocactus inconcinnus var. brederooianus (Buining) F. Ritter Synonym L TRO
Melocactus incurvus Suringar Unresolved L WCSP (in review)
Melocactus inflatus Suringar Unresolved L WCSP (in review)
Melocactus ingens Karw. ex Pfeiff. Unresolved L WCSP (in review)
Melocactus intermedius Suringar Unresolved L WCSP (in review)
Melocactus interpositus F. Ritter Synonym M TRO
Melocactus intortus (Mill.) Urb. Accepted L TRO
Melocactus intortus var. antonii (Britton) Backeb. Synonym L TRO
Melocactus intricatus Link & Otto Unresolved L WCSP (in review)
Melocactus inversus J.V.Suringar Unresolved L WCSP (in review)
Melocactus jakusii Mészáros, Zoltan Synonym M TRO
Melocactus jansenianus (Borg) Backeb. Synonym L TRO
Melocactus koolwijkianus Suringar Unresolved L WCSP (in review)
Melocactus krainzianus Buining & Brederoo Synonym M TRO
Melocactus lamarckii G.Don Unresolved L WCSP (in review)
Melocactus langsdorfii DC. Unresolved L WCSP (in review)
Melocactus lanssensianus P.J.Braun Accepted M WCSP (in review)
Melocactus lasyacanthus Sprenger Unresolved L WCSP (in review)
Melocactus latispinus Pfeiff. Unresolved L WCSP (in review)
Melocactus laui Antesb. Unresolved L WCSP (in review)
Melocactus lehmannii Miq. Unresolved L WCSP (in review)
Melocactus lemairei (Monv. ex Lem.) Miq. ex Lem. Accepted M TRO
Melocactus lensselinkianus Buining & Brederoo Synonym M TRO
Melocactus leopoldii auct. Unresolved L WCSP (in review)
Melocactus leucacanthus Suringar Unresolved L WCSP (in review)
Melocactus leucaster Hoffmanns. Unresolved L WCSP (in review)
Melocactus levitestatus Buining & Brederoo Accepted M TRO
Melocactus limis Suringar Unresolved L WCSP (in review)
Melocactus linkii J.V.Suringar Unresolved L WCSP (in review)
Melocactus lobelii J.V. Suringar Synonym M TRO
Melocactus loboguerreroi Cárdenas Synonym M TRO
Melocactus longicarpus Buining & Brederoo Synonym M TRO
Melocactus longispinus Buining, Brederoo & Theunissen Synonym M TRO
Melocactus lutescens J.V.Suringar Unresolved L WCSP (in review)
Melocactus macracanthoides Miq. Unresolved L WCSP (in review)
Melocactus macracanthos (Salm-Dyck) Link & Otto Accepted L TRO
Melocactus macrocanthus Miq. Unresolved L WCSP (in review)
Melocactus macrocephalus Lawr. Unresolved L WCSP (in review)
Melocactus macrodiscus Werderm. Synonym M TRO
Melocactus macrodiscus var. minor F. Ritter Synonym L TRO
Melocactus mammillariaeformis Salm-Dyck Synonym M TRO
Melocactus margaritaceus Rizzini Unresolved L WCSP (in review)
Melocactus martialis Suringar Unresolved L WCSP (in review)
Melocactus matanzanus León Accepted M TRO
Melocactus maxonii (Gürke) Gürke Synonym M WCSP (in review)
Melocactus maxonii var. sanctae-rosae L.D.Gómez Synonym L WCSP (in review)
Melocactus mazelianus Říha Accepted M WCSP (in review)
Melocactus melocactoides (Hoffmanns.) DC. Synonym L TRO
Melocactus melocactoides f. civitatis Rizzini Synonym L TRO
Melocactus melocactoides var. depressus (Hook.) Rizzini Synonym L TRO
Melocactus melocactoides f. depressus (Hook.) Rizzini Synonym L TRO
Melocactus melocactoides f. exsanguis Rizzini Synonym L TRO
Melocactus melocactoides var. itaipuassuensis Rizzini Synonym L TRO
Melocactus melocactoides var. violaceus (Pfeiff.) Rizzini Synonym L TRO
Melocactus melocactus H.Karst. Unresolved L WCSP (in review)
Melocactus meonacanthus Link & Otto Unresolved L WCSP (in review)
Melocactus microcarpus J.V.Suringar Unresolved L WCSP (in review)
Melocactus microcephalus Miq. Synonym L TRO
Melocactus miquelii Lehm. Synonym L TRO
Melocactus monoclonos DC. ex Steud. Unresolved L WCSP (in review)
Melocactus montanus F. Ritter Synonym M TRO
Melocactus monvillianus Miq. Unresolved L WCSP (in review)
Melocactus mulequensis Buining & Brederoo Synonym M TRO
Melocactus nagyi Mészáros, Zoltan Synonym L TRO
Melocactus nanus Suringar Unresolved L WCSP (in review)
Melocactus neomontanus Van Heek & Hovens Synonym M TRO
Melocactus neryi K.Schum. Accepted M WCSP (in review)
Melocactus nitidus F. Ritter Synonym M TRO
Melocactus oaxacensis (Britton & Rose) Backeb. Synonym M WCSP (in review)
Melocactus obliquus Suringar Unresolved L WCSP (in review)
Melocactus obovatus Suringar Unresolved L WCSP (in review)
Melocactus obtusipetalus Lem. Synonym M TRO
Melocactus obtusipetalus var. crassicostatus (Lem.) Lem. ex Miq. Synonym L TRO
Melocactus octogonus J.Forbes Unresolved L WCSP (in review)
Melocactus onychacanthus F.Ritter Unresolved L WCSP (in review)
Melocactus onychacanthus var. albescens F. Ritter Synonym L TRO
Melocactus onychacanthus var. conicus F. Ritter Synonym L TRO
Melocactus oreas Miq. Accepted M TRO
Melocactus oreas f. azulensis (Buining, Brederoo & Theunissen) P.J. Braun Synonym L TRO
Melocactus oreas var. bahiensis (Britton & Rose) Rizzini Accepted L TRO
Melocactus oreas subsp. bahiensis (Britton & Rose) Rizzini Synonym L TRO
Melocactus oreas subsp. cremnophilus (Buining & Brederoo) P.J. Braun Accepted L TRO
Melocactus oreas subsp. ernestii (Vaupel) P.J. Braun Synonym L TRO
Melocactus oreas f. erythracanthus (Buining & Brederoo) P.J. Braun Synonym L TRO
Melocactus oreas var. longispinus (Buining, Brederoo & Theunissen) P.J. Braun Synonym L TRO
Melocactus oreas subsp. oreas Synonym L TRO
Melocactus oreas var. rubrisaetosus (Buining, Brederoo & Theunissen) Rizzini Synonym L TRO
Melocactus oreas subsp. rubrisaetosus (Buining, Brederoo & Theunissen) P.J. Braun Synonym L TRO
Melocactus oreas var. submunitis Rizzini Synonym L TRO
Melocactus orthacanthus Link & Otto Unresolved L WCSP (in review)
Melocactus ovatus Suringar Unresolved L WCSP (in review)
Melocactus pachyacanthus Buining & Brederoo Accepted M TRO
Melocactus pachyacanthus subsp. pachyacanthus Synonym L TRO
Melocactus pachyanthus Buining & Brederoo Unresolved L WCSP (in review)
Melocactus pachycentrus Suringar Unresolved L WCSP (in review)
Melocactus parthonii Miq. Unresolved L WCSP (in review)
Melocactus parvispinus DC. Unresolved L WCSP (in review)
Melocactus parvispinus Suringar Unresolved L WCSP (in review)
Melocactus patens Suringar Unresolved L WCSP (in review)
Melocactus paucispinus G. Heimen & R. Paul Accepted M TRO
Melocactus pedernalensis M.M.Mejía & R.G.García Unresolved L WCSP (in review)
Melocactus pentacanthus Suringar Unresolved L WCSP (in review)
Melocactus pentacentrus Lem. Synonym M TRO
Melocactus perezassoi Areces Synonym M TRO
Melocactus peruvianus Vaupel Accepted L TRO
Melocactus peruvianus var. amstutziae (Rauh & Backeb.) Rauh & Backeb. Synonym L TRO
Melocactus peruvianus var. canetensis Rauh & Backeb. Synonym L TRO
Melocactus peruvianus var. lurinensis Rauh & Backeb. Synonym L TRO
Melocactus pescaderensis Xhonneux & Fern.Alonso Unresolved L WCSP (in review)
Melocactus pinguis J.V.Suringar Unresolved L WCSP (in review)
Melocactus placentiformis DC. Unresolved L WCSP (in review)
Melocactus platyacanthus Link & Otto Unresolved L WCSP (in review)
Melocactus poliacanthus Link & Otto Unresolved L WCSP (in review)
Melocactus portoricensis Suringar Unresolved L WCSP (in review)
Melocactus praerupticola Areces Unresolved L WCSP (in review)
Melocactus prolifer Otto & A.Dietr. Unresolved L WCSP (in review)
Melocactus pruinosus Werderm. Synonym M TRO
Melocactus pruinosus var. concinnus (Buining & Brederoo) P.J. Braun Synonym L TRO
Melocactus pulvinosus Suringar Unresolved L WCSP (in review)
Melocactus pusillus Suringar Unresolved L WCSP (in review)
Melocactus pycnacanthus Cels ex Miq. Unresolved L WCSP (in review)
Melocactus pyramidalis Link & Otto Unresolved L WCSP (in review)
Melocactus radiatus Suringar Unresolved L WCSP (in review)
Melocactus radoczii Mészáros, Zoltan Synonym L TRO
Melocactus rectiusculus Suringar Unresolved L WCSP (in review)
Melocactus recurvus Link & Otto Unresolved L WCSP (in review)
Melocactus reticulatus Suringar Unresolved L WCSP (in review)
Melocactus reversus Suringar Unresolved L WCSP (in review)
Melocactus robustispinus Buining, Brederoo & Theunissen Synonym M TRO
Melocactus roraimensis P.J. Braun & Esteves Synonym L TRO
Melocactus roseus Suringar Unresolved L WCSP (in review)
Melocactus rubellus Suringar Unresolved L WCSP (in review)
Melocactus rubens Miq. Unresolved L WCSP (in review)
Melocactus rubens Pfeiff. Unresolved L WCSP (in review)
Melocactus rubrisaetosus Buining, Brederoo & Theunissen Synonym M TRO
Melocactus rubrispinus F. Ritter Synonym M TRO
Melocactus rudis Suringar Unresolved L WCSP (in review)
Melocactus ruestii K.Schum. Synonym M WCSP (in review)
Melocactus ruestii subsp. cintalapensis Elizondo Synonym L WCSP (in review)
Melocactus ruestii subsp. maxonii (Rose) Elizondo Synonym L WCSP (in review)
Melocactus ruestii subsp. oaxacensis (Britton & Rose) Elizondo Synonym L WCSP (in review)
Melocactus ruestii subsp. sanctae-rosae (L.D.Gómez) Elizondo Synonym L WCSP (in review)
Melocactus rufispinus Bertol. Unresolved L WCSP (in review)
Melocactus rustii K.Schum. [Spelling variant] Synonym M WCSP (in review)
Melocactus salmianus Link & Otto Unresolved L WCSP (in review)
Melocactus salvador L.Murillo Synonym M WCSP (in review)
Melocactus salvadorensis Werderm. Accepted M TRO
Melocactus saxicola L. Diers & E. Esteves Pereira Synonym M TRO
Melocactus schatzlii H.Till & R.Gruber Accepted M WCSP (in review)
Melocactus schlumbergerianus Lem. Unresolved L WCSP (in review)
Melocactus schulzianus Buining & Brederoo Synonym M WCSP (in review)
Melocactus securituberculatus Buining & Brederoo Synonym M TRO
Melocactus sellowii Link & Otto Unresolved L WCSP (in review)
Melocactus smithii (Alexander) Buining ex G.D. Rowley Accepted L TRO
Melocactus sordidus Suringar Unresolved L WCSP (in review)
Melocactus spatanginus Suringar Unresolved L WCSP (in review)
Melocactus spatangus Pfeiff. Unresolved L WCSP (in review)
Melocactus stellatus Suringar Unresolved L WCSP (in review)
Melocactus stramineus Suringar Unresolved L WCSP (in review)
Melocactus tenuispinus Link & Otto Unresolved L WCSP (in review)
Melocactus tenuissimus J.V.Suringar Unresolved L WCSP (in review)
Melocactus tephracanthus Link & Otto Unresolved L WCSP (in review)
Melocactus townsendianus Backeb. Unresolved L WCSP (in review)
Melocactus trachycephalus Suringar Unresolved L WCSP (in review)
Melocactus trichacanthus Suringar Unresolved L WCSP (in review)
Melocactus trigonaster J.V.Suringar Unresolved L WCSP (in review)
Melocactus trigonus Suringar Unresolved L WCSP (in review)
Melocactus trujillensis Rauh & Backeb. Synonym L TRO
Melocactus trujillensis var. schoenii Rauh & Backeb. Synonym L TRO
Melocactus tuberculatus Link & Otto Unresolved L WCSP (in review)
Melocactus uebelmannii P.J. Braun Synonym M TRO
Melocactus uncinatus Suringar Unresolved L WCSP (in review)
Melocactus unguispinus Backeb. Synonym L TRO
Melocactus violaceus Pfeiff. Accepted L WCSP (in review)
Melocactus violaceus subsp. margaritaceus N.P. Taylor Accepted L TRO
Melocactus violaceus subsp. ritteri N.P. Taylor Accepted L TRO
Melocactus violaceus subsp. violaceus Synonym L TRO
Melocactus viridescens Nutt. ex Teschem. Unresolved L WCSP (in review)
Melocactus viridis Lawr. Unresolved L WCSP (in review)
Melocactus warasii E. Pereira & Buenecker Synonym M TRO
Melocactus wendlandii Miq. Unresolved L WCSP (in review)
Melocactus xanthacanthus Miq. Unresolved L WCSP (in review)
Melocactus zehntneri (Britton & Rose) Luetzelb. Accepted M WCSP (in review)
Melocactus zehntneri subsp. canescens (F. Ritter) P.J. Braun Synonym L TRO
Melocactus zehntneri var. curvicornis (Buining & Brederoo) P.J. Braun Synonym L TRO
Melocactus zehntneri subsp. robustispinus (Buining, Brederoo & Theunissen) P.J. Braun Synonym L TRO
Melocactus zehntneri var. viridis F. Ritter Synonym L TRO
Melocactus zuccarinii Miq. Synonym L TRO