Taxonomy of the Cactaceae

In 1984, the International Organization for Succulent Plant Study set up a working party, now called the International Cactaceae Systematics Group, to produce a consensus classification of the cactus family, down to the level of genus. Their classification has been used as the basis for systems published since the mid-1990s. Treatments in the 21st century have generally divided the family into around 125–130 genera and 1,400–1,500 species, which are then arranged in a number of tribes and subfamilies. However, subsequent molecular phylogenetic studies have shown that a very high proportion of the higher taxa (genera, tribes and subfamilies) are not monophyletic, i.e. they do not contain all of the descendants of a common ancestor. As of August 2023, the internal classification of the family Cactaceae remained uncertain and subject to change. A classification incorporating many of the insights from the molecular studies was produced by Nyffeler and Eggli in 2010.[1]

A collection of cultivated cacti

Overview

The classification of the family Cactaceae remains uncertain as of August 2023. Since the mid-1990s, the system produced by the International Cactaceae Systematics Group (ICSG) of the International Organization for Succulent Plant Study has been used as the basis of many published classifications. Detailed treatments produced in the 21st century have divided the family into around 125–130 genera and 1,400–1,500 species, which are then arranged into a number of tribes and subfamilies.[2][3][4]

The ICSG classification of the family recognizes four subfamilies: Pereskioideae (consisting only of the genus Pereskia), Opuntioideae, Maihuenioideae (consisting only of the genus Maihuenia) and Cactoideae.[2] Molecular phylogenetic studies suggest that Pereskia is not monophyletic (i.e. its species are not the complete set of descendants of a common ancestor), so that Pereskioideae is not monophyletic although the three other subfamilies are.[4][5] The Bayesian consensus cladogram from a 2005 study is shown below:[5]

Cactaceae

Pereskia Clade A

Pereskia Clade B

Opuntioideae

Maihuenioideae

Cactoideae

Five tribes have been recognized within the subfamily Opuntioideae: Tephrocacteae, Pterocacteae, Austrocylindropuntieae, Cylindropuntieae and Opuntieae.[6] All but the first, Tephrocacteae, were shown to be "essentially monophyletic" in molecular phylogenetic study in 2009. A summary of the consensus Bayesian tree is shown below (tribes are bold; the number of species in the study is shown in parentheses).[7]

Puna (1), Maihueniopsis (3), Cumulopuntia (1) = Tephrocacteae (part)

Pterocactus (6) = Pterocacteae

terete‑stemmed opuntioids

Maihueniopsis (1), Puna (1), Tephrocactus (7) = Tephrocacteae (part)

Maihueniopsis (1), Cumulopuntia (5), Puna (1), Austrocylindropuntia (4) ≈ Austrocylindropuntieae

Quiabentia (1), Pereskiopsis (2), Micropuntia (2), Cylindropuntia (12), Grusonia s.s. (1), Corynopuntia (6) ≈ Cylindropuntieae

flat‑stemmed opuntioids

Miqueliopuntia (1), Tunilla (2), Maihueniopsis (1)

Opuntia (2)

Brasiliopuntia (1), Opuntia (1), Tacinga (2)

Opuntia (28), Consolea (6), Nopalea (7)
≈ Opuntieae

Many of the genera within the Opuntioideae are not monophyletic. Maihueniopsis is highly polyphyletic, appearing in four separate lineages. The two largest genera within the subfamily, Opuntia and Cylindropuntia are also not monophyletic. The classification of the Opuntioideae is thus uncertain as of March 2012; Griffith and Porter say that changes in classification will require "broad information (of multiple data types) regarding all species of opuntioid cacti".[8]

The ICSG classification divides the subfamily Cactoideae into nine tribes. However, phylogenetic research has not supported most of these tribes, nor even the genera of which they are composed. A 2011 study found that "an extraordinarily high proportion of genera" were not monophyletic, including 22 (61%) of the 36 genera in the subfamily Cactoideae sampled in the research.[4] Of the nine tribes recognized within Cactoideae, one, Calymmantheae, comprises a single genus, Calymmanthium.[2] Of the remaining eight, only two (Cacteae and Rhipsalideae) have been shown to be monophyletic. A summary of the cladograms for the Cactoideae presented in a 2011 paper is shown below (ICSG tribes in bold).[9]

Cactoideae

Blossfeldia

Cacteae

core Cactoideae

Calymmantheae (i.e. Calymmanthium), species of Copiapoa and Frailea

core Cactoideae I

including members of Pachycereeae, Hylocereeae and Browningieae

core Cactoideae II

Rhipsalideae

other core Cactoideae II, including members of Notocacteae, Trichocereeae, Cereeae and Browningieae

The classification of the Cactaceae thus remains subject to change, from the genus level upwards. In 2016, David Hunt wrote that "the advent of molecular systematic studies in the past two decades will hopefully have a stabilizing effect on classification in due course, but has so far had the opposite effect".[10]

Nyffler and Eggli (2010) classification

In 2010, Nyffler and Eggli produced a classification based on an explicit phylogeny. The broad outlines of their cladogram agree with that of Hern et al. (2011), shown above, although some details are different. Their classification corresponds to the cladogram shown below.[1]

Cactaceae

Pereskia A

Pereskia B

Maihuenia

incertae sedis

Cylindropuntieae

Opuntieae

Blossfeldia (Blossfeldieae)

Cacteae

incertae sedis

Phyllocacteae

Rhipsalideae

Notocacteae

Cereeae
Pereskioideae
Maihuenioideae
Opuntioideae
Cactoideae

The table below shows how the genera recognized by Nyffler and Eggli are placed into their subfamilies and tribes (they also use some subtribes, not shown here). The column headed "Older tribe (if different)" shows the ICSG classification of the subfamily Cactoideae (as presented by Anderson in 2001[11]) with a 2002 classification of the subfamily Opuntioideae.[6][12] There are differences in the genera recognized in the systems; where the older system does not recognize the genus, "–" is shown.

Nyffeller & Eggli (2010) classification[1]
Systematic
order		GenusSubfamilyTribeOlder tribe (if different)[11][6][12]
1Pereskia Mill.Pereskioideae*
2Maihuenia (Phil.ex F.A.C.Weber) K.Schum.Maihuenioideae
3.1Austrocylindropuntia Backeb.OpuntioideaeCylindropuntieaeAustrocylindropuntieae
3.1Cumulopuntia F.Ritter (part)OpuntioideaeCylindropuntieaeAustrocylindropuntieae
3.1Cylindropuntia (Engelm.) F.M.KnuthOpuntioideaeCylindropuntieae
3.1Grusonia F.Rchb.ex Britton & RoseOpuntioideaeCylindropuntieae
3.1Maihueniopsis Speg. (part)OpuntioideaeCylindropuntieaeTephrocacteae
3.1Pereskiopsis Britton & RoseOpuntioideaeCylindropuntieae
3.1Quiabentia Britton & RoseOpuntioideaeCylindropuntieae
3.1Tephrocactus Lem.OpuntioideaeCylindropuntieaeTephrocacteae
3.2Brasiliopuntia (K.Schum.) A.BergerOpuntioideaeOpuntieae
3.2Consolea Lem.OpuntioideaeOpuntieae
3.2Miqueliopuntia Fric ex F.RitterOpuntioideaeOpuntieae
3.2Opuntia Mill.OpuntioideaeOpuntieae
3.2Tacinga Britton & RoseOpuntioideaeOpuntieae
3.2Tunilla D.R.Hunt & IliffOpuntioideaeOpuntieae
3.3Cumulopuntia F.Ritter (part)Opuntioideaeincertae sedisAustrocylindropuntieae
3.3Maihueniopsis Speg. (part)Opuntioideaeincertae sedisTephrocacteae
3.3Pterocactus K.Schum.Opuntioideaeincertae sedisPterocacteae
4.1Blossfeldia Werderm.CactoideaeBlossfeldieaeNotocacteae
4.2Acharagma (N.P.Taylor) GlassCactoideaeCacteae
4.2Ariocarpus Scheidw.CactoideaeCacteae
4.2Astrophytum Lem.CactoideaeCacteae
4.2Aztekium Boed.CactoideaeCacteae
4.2Coryphantha (Engelm.) Lem.CactoideaeCacteae
4.2Digitostigma Velazco & NevárezCactoideaeCacteae–
4.2Echinocactus Link & OttoCactoideaeCacteae
4.2Echinomastus Britton & RoseCactoideaeCacteae
4.2Epithelantha F.A.C.Weber ex Britton & RoseCactoideaeCacteae
4.2Escobaria Britton & RoseCactoideaeCacteae
4.2Ferocactus Britton & RoseCactoideaeCacteae
4.2Geohintonia Glass & W.A.Fitz Maur.CactoideaeCacteae
4.2Leuchtenbergia Hook.CactoideaeCacteae
4.2Lophophora J.M.Coult.CactoideaeCacteae
4.2Mammillaria Haw.
including Cochemiea (K.Brandegee) Walton		CactoideaeCacteae
4.2Mammilloydia Buxb.CactoideaeCacteae
4.2Neolloydia Britton & RoseCactoideaeCacteae
4.2Obregonia FricCactoideaeCacteae
4.2Ortegocactus AlexanderCactoideaeCacteae
4.2Pediocactus Britton & RoseCactoideaeCacteae
4.2Pelecyphora C.Ehrenb.CactoideaeCacteae
4.2Sclerocactus Britton & RoseCactoideaeCacteae
4.2Stenocactus (K.Schum.) A.W.HillCactoideaeCacteae
4.2Strombocactus Britton & RoseCactoideaeCacteae
4.2Thelocactus (K.Schum.) Britton & RoseCactoideaeCacteae
4.2Turbinicarpus (Backeb.) Buxb.& Backeb.CactoideaeCacteae
4.3Acanthocereus (Engelm.ex A.Berger) Britton & RoseCactoideaePhyllocacteaePachycereeae
4.3Armatocereus Backeb.CactoideaePhyllocacteaeBrowningieae
4.3Austrocactus Britton & RoseCactoideaePhyllocacteaeNotocacteae
4.3Brachycereus Britton & RoseCactoideaePhyllocacteaeTrichocereeae
4.3Castellanosia CárdenasCactoideaePhyllocacteae–
4.3Corryocactus Britton & RoseCactoideaePhyllocacteaePachycereeae
4.3Dendrocereus Britton & RoseCactoideaePhyllocacteaePachycereeae
4.3Eulychnia Phil.CactoideaePhyllocacteaeNotocacteae
4.3Jasminocereus Britton & RoseCactoideaePhyllocacteaeBrowningieae
4.3Leptocereus (A.Berger) Britton & RoseCactoideaePhyllocacteaePachycereeae
4.3Neoraimondia Britton & RoseCactoideaePhyllocacteaeBrowningieae
4.3Pfeiffera Salm-DyckCactoideaePhyllocacteae–
4.3Disocactus Lindl.CactoideaePhyllocacteaeHylocereeae
4.3Epiphyllum Haw.CactoideaePhyllocacteaeHylocereeae
4.3Hylocereus (A.Berger) Britton & RoseCactoideaePhyllocacteaeHylocereeae
4.3Pseudorhipsalis Britton & RoseCactoideaePhyllocacteaeHylocereeae
4.3Selenicereus (A.Berger) Britton & RoseCactoideaePhyllocacteaeHylocereeae
4.3Weberocereus Britton & RoseCactoideaePhyllocacteaeHylocereeae
4.3Bergerocactus Britton & RoseCactoideaePhyllocacteaePachycereeae
4.3Carnegiea Britton & RoseCactoideaePhyllocacteaePachycereeae
4.3Cephalocereus Pfeiff.CactoideaePhyllocacteaePachycereeae
4.3Echinocereus Engelm.CactoideaePhyllocacteaePachycereeae
4.3Escontria RoseCactoideaePhyllocacteaePachycereeae
4.3Isolatocereus Backeb.CactoideaePhyllocacteaePachycereeae
4.3Myrtillocactus ConsoleCactoideaePhyllocacteaePachycereeae
4.3Neobuxbaumia Backeb.CactoideaePhyllocacteaePachycereeae
4.3Pachycereus (A.Berger) Britton & RoseCactoideaePhyllocacteaePachycereeae
4.3Peniocereus (A.Berger) Britton & RoseCactoideaePhyllocacteaePachycereeae
4.3Polaskia Backeb.CactoideaePhyllocacteaePachycereeae
4.3Pseudoacanthocereus F.RitterCactoideaePhyllocacteaePachycereeae
4.3Stenocereus (A.Berger) Riccob.CactoideaePhyllocacteaePachycereeae
4.3Strophocactus Britton & RoseCactoideaePhyllocacteae–
4.4Hatiora Britton & RoseCactoideaeRhipsalideae
4.4Lepismium Pfeiff.CactoideaeRhipsalideae
4.4Rhipsalis Gaertn.CactoideaeRhipsalideae
4.4Schlumbergera Lem.CactoideaeRhipsalideae
4.5Eriosyce Phil.CactoideaeNotocacteae
4.5Neowerdermannia FricCactoideaeNotocacteae
4.5Parodia Speg.CactoideaeNotocacteae
4.5Rimacactus MottramCactoideaeNotocacteae–
4.5Yavia R.Kiesling & PiltzCactoideaeNotocacteae–
4.6Browningia CárdenasCactoideaeCereeaeBrowningieae
4.6Gymnocalycium Pfeiff.ex MittlerCactoideaeCereeaeTrichocereeae
4.6Lasiocereus F.RitterCactoideaeCereeaeTrichocereeae
4.6Rebutia K.Schum.CactoideaeCereeaeTrichocereeae
4.6Stetsonia Britton & RoseCactoideaeCereeaeBrowningieae
4.6Uebelmannia BuiningCactoideaeCereeae
4.6Weingartia Werderm.
including Cintia Knize & Ríha		CactoideaeCereeaeNotocacteae (Cintia)
4.6Arrojadoa Britton & RoseCactoideaeCereeae
4.6Brasilicereus Backeb.CactoideaeCereeae
4.6Cereus Mill.CactoideaeCereeae
4.6Cipocereus F.RitterCactoideaeCereeae
4.6Coleocephalocereus Backeb.CactoideaeCereeae
4.6Discocactus Pfeiff.CactoideaeCereeaeTrichocereeae
4.6Facheiroa Britton & RoseCactoideaeCereeaeTrichocereeae
4.6Leocereus Britton & RoseCactoideaeCereeaeTrichocereeae
4.6Melocactus Link & OttoCactoideaeCereeae
4.6Micranthocereus Backeb.CactoideaeCereeae
4.6Pierrebraunia EstevesCactoideaeCereeae–
4.6Pilosocereus Byles & G.D.RowleyCactoideaeCereeae
4.6Praecereus Buxb.CactoideaeCereeae
4.6Stephanocereus A.BergerCactoideaeCereeae
4.6Acanthocalycium Backeb.CactoideaeCereeaeTrichocereeae
4.6Arthrocereus A.BergerCactoideaeCereeaeTrichocereeae
4.6Borzicactus Riccob.CactoideaeCereeae–
4.6Cephalocleistocactus F.RitterCactoideaeCereeaeTrichocereeae
4.6Cleistocactus Lem.CactoideaeCereeaeTrichocereeae
4.6Denmoza Britton & RoseCactoideaeCereeaeTrichocereeae
4.6Echinopsis Zucc.CactoideaeCereeaeTrichocereeae
4.6Espostoa Britton & RoseCactoideaeCereeaeTrichocereeae
4.6Espostoopsis Buxb.CactoideaeCereeaeTrichocereeae
4.6Haageocereus Backeb.
including Pygmaeocereus H.Johnson & Backeb.		CactoideaeCereeaeTrichocereeae
4.6Harrisia BrittonCactoideaeCereeaeTrichocereeae
4.6Matucana Britton & RoseCactoideaeCereeaeTrichocereeae
4.6Mila Britton & RoseCactoideaeCereeaeTrichocereeae
4.6Oreocereus (A.Berger) Riccob.CactoideaeCereeaeTrichocereeae
4.6Oroya Britton & RoseCactoideaeCereeaeTrichocereeae
4.6Rauhocereus Backeb.CactoideaeCereeaeTrichocereeae
4.6Samaipaticereus CárdenasCactoideaeCereeaeTrichocereeae
4.6Vatricania Backeb.CactoideaeCereeae–
4.6Weberbauerocereus Backeb.CactoideaeCereeaeTrichocereeae
4.6Yungasocereus F.RitterCactoideaeCereeaeTrichocereeae
4.7Calymmanthium F.RitterCactoideaeincertae sedisCalymmantheae
4.7Copiapoa Britton & RoseCactoideaeincertae sedisNotocacteae
4.7Frailea Britton & RoseCactoideaeincertae sedisNotocacteae

Earlier classification

Unless otherwise indicated, the subfamily placement of the genera listed here is based on Anderson's 2001 presentation of the ICSG classification, as is the tribal placement of the genera of the subfamily Cactoideae.[11] The division of the subfamily Opuntioideae into tribes is additional to the ICSG system.[6][12]

Subfamily Pereskioideae
Pereskia aculeata
  • Pereskia Mill.
synonyms: Peirescia Zucc. (orth. var.), Peireskia Steud. (orth. var.), Perescia Lem. (orth. var.), Rhodocactus (A.Berger) F.M.Knuth

Tribe Austrocylindropuntieae
  • Austrocylindropuntia Backeb.
  • Cumulopuntia F.Ritter

Tribe Cylindropuntieae
  • Cylindropuntia (Engelm.) F.M.Knuth – chollas
  • Grusonia F.Rchb. ex Britton & Rose
including Corynopuntia F.M.Knuth, Micropuntia Daston
synonyms: Peireskiopsis Vaupel (orth. var.)
  • Quiabentia Britton & Rose

Tribe Opuntieae
Opuntia ficus-indica
  • Brasiliopuntia (K.Schum.) A.Berger
  • Consolea Lem.
  • Miqueliopuntia Fric ex F.Ritter
  • Opuntia Mill. – prickly pears
synonyms: Airampoa Fric, Cactodendron Bigelow, nom. inval., Cactus Lem., Chaffeyopuntia Fric & Schelle, Clavarioidia Kreuz. (nom. inval.), Ficindica St.-Lag., Nopalea Salm-Dyck, Parviopuntia Soulaire & Marn.-Lap. (nom. inval.), Phyllarthus Neck. ex M.Gómez (nom. inval.), Salmiopuntia Fric (nom. inval.), Subulatopuntia Fric & Schelle, Tunas Lunell, Weberiopuntia Fric
including Nopalea Salm-Dyck
  • Salmonopuntia P.V.Heath
  • Tacinga Britton & Rose
  • Tunilla D.R.Hunt & Iliff

Tribe Pterocacteae
  • Pterocactus K.Schum.

Tribe Tephrocacteae
  • Maihueniopsis Speg.
including Puna R.Kiesling
  • Tephrocactus Lem.
synonyms: Pseudotephrocactus Fric

Subfamily Maihuenioideae
Maihuenia poeppigii
  • Maihuenia (Phil. ex F.A.C.Weber) K.Schum.

Tribe Browningieae
  • Armatocereus Backeb.
  • Browningia Cárdenas, Gymnocereus Rauh & Backeb.
  • Jasminocereus Britton & Rose
  • Neoraimondia Britton & Rose
synonyms: Neocardenasia Backeb.
  • Stetsonia Britton & Rose

Tribe Cacteae
  • Acharagma (N.P.Taylor) Glass
  • AriocarpusScheidw. – living rock
synonyms: Anhalonium Lem., Neogomesia Castañeda, Neogomezia Buxb. (orth. var.), Roseocactus A.Berger, Stromatocactus Karw. ex Rümpler (nom. inval.)
Astrophytum myriostigma
  • Astrophytum Lem.
synonyms: Astrophyton Lawr. (orth. var.), Maierocactus E.C.Rost
  • Aztekium Boed.
  • Chichimecactus Bárcenas, H.M.Hern. & P.Hern.-Led.[13]
  • Cochemiea (K.Brandegee) Walton – see Mammillaria
  • Coryphantha (Engelm.) Lem. – beehive cactus
synonyms: Aulacothele Monv. (nom. inval.), Cumarinia Buxb., Glandulifera (Salm-Dyck) Fric, Lepidocoryphantha Backeb., Roseia Fric (nom. inval.)
  • Echinocactus Link & Otto – barrel cactus
synonyms: Brittonrosea Speg., Echinofossulocactus Lawr., Homalocephala Britton & Rose
  • Echinomastus Britton & Rose
  • Epithelantha F.A.C.Weber ex Britton & Rose – pingpong ball cactus
  • Escobaria Britton & Rose – foxtail cactus, pincushion cactus
synonyms: Cochiseia W.H.Earle, Escobesseya Hester, Fobea Fric (nom. inval.), Neobesseya Britton & Rose
synonyms: Bisnaga Orcutt, Brittonia C.A.Armstr. (nom. inval.)
Mammillaria elongata
  • Mammillaria Haw. – fishhook cactus, globe cactus, pincushion cactus, bird's-nest cactus
synonyms: Bartschella Britton & Rose, Cactus L., Chilita Orcutt, Cochemiea (K.Brandegee) Walton, Dolichothele (K.Schum.) Britton & Rose, Ebnerella Buxb., Haagea Fric, Krainzia Backeb., Lactomammillaria Fric (nom. inval.), Leptocladia Buxb., Leptocladodia Buxb., Mamillaria F.Rchb. (orth. var.), Mamillopsis (E.Morren) F.A.C.Weber ex Britton & Rose, Mammariella Shafer (nom. inval.), Mammilaria Torr. & A.Gray (orth. var.), Neomammillaria Britton & Rose, Oehmea Buxb., Phellosperma Britton & Rose, Porfiria Boed., Pseudomammillaria Buxb., Solisia Britton & Rose
  • Mammilloydia Buxb.
  • Neolloydia Britton & Rose
synonyms: Napina Fric (nom. inval.), Pseudosolisia Y.Itô (nom. inval.)
  • Obregonia Fric
  • Ortegocactus Alexander
  • Pediocactus Britton & Rose – hedgehog cactus
synonyms: Navajoa Croizat, Pilocanthus B.W.Benson & Backeb.
  • Pelecyphora C.Ehrenb.
synonyms: Encephalocarpus A.Berger
Sclerocactus glaucus
  • Sclerocactus Britton & Rose – fishhook cactus
synonyms: Ancistrocactus Britton & Rose, Coloradoa Boissev. & C.Davidson, Glandulicactus Backeb., Toumeya Britton & Rose
  • Stenocactus (K.Schum.) A.W.Hill
synonyms: Echinofossulocactus Britton & Rose, Efossus Orcutt (orth. var.)
  • Strombocactus Britton & Rose
  • Thelocactus (K.Schum.) Britton & Rose
synonyms: Hamatocactus Britton & Rose, Thelomastus Fric (nom. inval.)
  • Turbinicarpus (Backeb.) Buxb. & Backeb. – top cactus
synonyms: Gymnocactus Backeb., Normanbokea Kladiwa & Buxb., Rapicactus Buxb. & Oehme

Tribe Calymmantheae
  • Calymmanthium F.Ritter
synonyms: Diploperianthium F.Ritter (nom. inval.)

Tribe Cereeae
  • Aylostera Speg.
synonyms: Digitorebutia Frič & Kreuz. ex Buining, Mediolobivia Backeb.
  • Arrojadoa Britton & Rose
synonyms: Pierrebraunia Esteves
  • Brasilicereus Backeb.
  • Cereus Mill. – sweet potato cactus
synonyms: Mirabella F.Ritter, Piptanthocereus (A.Berger) Riccob., Subpilocereus Backeb.
  • Cipocereus F.Ritter
synonyms: Floribunda F.Ritter
  • Coleocephalocereus Backeb.
synonyms: Buiningia Buxb.
Melocactus matanzanus
  • Melocactus Link & Otto
synonyms: Cactus Britton & Rose
  • Micranthocereus Backeb.
synonyms: Austrocephalocereus Backeb., Siccobaccatus P.J.Braun & Esteves
  • Pilosocereus Byles & G. D. Rowley – tree cactus
synonyms: Pilocereus K.Schum., Pseudopilocereus Buxb.
  • Praecereus Buxb.
  • Reicheocactus Backeb.
  • Serrulatocereus Guiggi
  • Stephanocereus A.Berger
  • Uebelmannia Buining

Tribe Hylocereeae
synonyms: Aporocactus Lem., Aporocereus Fric & Kreuz. (orth. var.), Bonifazia Standl. & Steyerm., Chiapasia Britton & Rose, Disisocactus Kunze (orth. var.), Disocereus Fric & Kreuz. (orth. var.), Heliocereus (A.Berger) Britton & Rose, Lobeira Alexander, Mediocereus Fric & Kreuz. (orth. var.), Nopalxochia Britton & Rose, Pseudonopalxochia Backeb., Trochilocactus Linding., Wittia K.Schum., Wittiocactus Rauschert
Epiphyllum anguliger
synonyms: Phyllocactus Link, Phyllocereus Miq.
  • Hylocereus (A.Berger) Britton & Rose – nightblooming cactus
synonyms: Wilmattea Britton & Rose
  • Pseudorhipsalis Britton & Rose
  • Selenicereus (A.Berger) Britton & Rose – moonlight cactus, nightblooming cereus
synonyms: Cryptocereus Alexander, Deamia Britton & Rose, Marniera Backeb., Mediocactus Britton & Rose, Strophocactus Britton & Rose, Strophocereus Fric & Kreuz. (orth. var.)
  • Weberocereus Britton & Rose
synonyms: Eccremocactus Britton & Rose, Eccremocereus Fric & Kreuz. (orth. var.), Werckleocereus Britton & Rose

Tribe Notocacteae
  • Austrocactus Britton & Rose
  • Blossfeldia Werderm.
  • Cintia Kníže & Říha
  • Copiapoa Britton & Rose
synonyms: Pilocopiapoa F.Ritter
Eriosyce esmeraldana
synonyms: Ceratistes Labour. (nom. inval.), Chileniopsis Backeb., Chileocactus Fric (nom. inval.), Chileorebutia Fric (nom. inval.), Chiliorebutia Fric (orth. var.), Delaetia Backeb., Dracocactus Y.Itô (nom. inval.), Euporteria Kreuz. & Buining, Hildmannia Kreuz. & Buining, Horridocactus Backeb., Islaya Backeb., Neochilenia Backeb. ex Dölz, Neoporteria Britton & Rose, Neoporteria Backeb., Neotanahashia Y.Itô, Nichelia Bullock (nom. inval.), Pyrrhocactus (A.Berger) A.W.Hill, Rodentiophila F.Ritter ex Backeb., Thelocephala Y.Itô
  • Eulychnia Phil.
synonyms: Philippicereus Backeb.
  • Frailea Britton & Rose
  • Neowerdermannia Fric
  • Parodia Speg.
synonyms: Acanthocephala Backeb., Brasilicactus Backeb., Brasiliparodia F.Ritter, Brasilocactus Fric (nom. inval.), Chrysocactus Y.Itô (nom. inval.), Dactylanthocactus Y.Itô, Eriocactus Backeb., Eriocephala Backeb., Friesia Fric (nom. inval.), Hickenia Britton & Rose, Malacocarpus Salm-Dyck, Microspermia Fric, Neohickenia Fric, Notocactus (K.Schum.) Fric, Sericocactus Y.Itô, Wigginsia D.M.Porter
  • Yavia R.Kiesling & Piltz [14]

Tribe Pachycereeae
  • Acanthocereus (Engelm. ex A.Berger) Britton & Rose – triangle cactus
synonyms: Dendrocereus Britton & Rose, Monvillea Britton & Rose
synonyms: Bergerocereus Fric & Kreuz. (orth. var.)
Carnegiea gigantea
synonyms: Haseltonia Backeb., Neodawsonia Backeb., Pilocereus Lem.
  • Corryocactus Britton & Rose
synonym: Corryocereus Fric & Kreuz. (orth. var.), Erdisia Britton & Rose, Eulychnocactus Backeb. (nom. inval.)
  • Dendrocereus Britton & Rose – see Acanthocereus
  • Echinocereus Engelm. – hedgehog cactus
synonyms: Morangaya G.D.Rowley, Wilcoxia Britton & Rose
  • Escontria Rose
  • Isolatocereus Backeb. – see Stenocereus
  • Leptocereus (A.Berger) Britton & Rose
synonyms: Neoabbottia Britton & Rose
  • ×Myrtgerocactus Moran
[= Myrtillocactus × Bergerocactus]
  • Myrtillocactus Console
synonyms: Myrtillocereus Fric & Kreuz. (orth. var.)
Pachycereus pringlei
  • Neobuxbaumia Backeb.
synonyms: Pseudomitrocereus Bravo & Buxb., Rooksbya Backeb.
  • ×Pacherocactus G.D.Rowley
[= Pachycereus × Bergerocactus]
  • Pachycereus (A.Berger) Britton & Rose
synonyms: Backebergia Bravo, Lemaireocereus Britton & Rose, Lophocereus (A.Berger) Britton & Rose, Marginatocereus (Backeb.) Backeb., Mitrocereus (Backeb.) Backeb., Pterocereus T.MacDoug. & Miranda
  • Peniocereus (A.Berger) Britton & Rose
synonyms: Cullmannia Distefano, Neoevansia W.T.Marshall, Nyctocereus (A.Berger) Britton & Rose
  • Polaskia Backeb.
synonyms: Chichipia Backeb. (nom. inval.), Heliabravoa Backeb.
  • Pseudoacanthocereus F.Ritter
  • Stenocereus (A.Berger) Riccob.
synonyms: Hertrichocereus Backeb., Isolatocereus Backeb., Isolatocereus (Backeb.) Backeb., Machaerocereus Britton & Rose, Marshallocereus Backeb., Neolemaireocereus Backeb., Rathbunia Britton & Rose, Ritterocereus Backeb.

Tribe Rhipsalideae
Hatiora salicornioides
synonyms: Epiphyllopsis Backeb. & F.M.Knuth, Hariota DC., Pseudozygocactus Backeb., Rhipsalidopsis Britton & Rose
  • Lepismium Pfeiff.
synonyms: Acanthorhipsalis (K.Schum.) Britton & Rose, Acanthorhipsalis Kimnach, Pfeiffera Salm-Dyck
synonyms: Cassytha Mill., Erythrorhipsalis A.Berger, Hariota Adans., Lymanbensonia Kimnach
synonyms: Epiphyllanthus A.Berger, Epiphyllum Pfeiff., Opuntiopsis Knebel (nom. inval.), Zygocactus K.Schum., Zygocereus Fric & Kreuz. (orth. var.)

Tribe Trichocereeae
  • Acanthocalycium Backeb.
synonyms: Spinicalycium Fric (nom. inval.)
Cleistocactus
  • Cleistocactus Lem.
synonyms: Akersia Buining, Bolivicereus Cárdenas, Borzicactella H.Johnson ex F.Ritter, Borzicactus Riccob, Borzicereus Fric & Kreuz. (orth. var.), Cephalocleistocactus F.Ritter, Cleistocereus Fric & Kreuz. (orth. var.), Clistanthocereus Backeb., Demnosa Fric, Gymnanthocereus Backeb., Hildewintera F.Ritter, Loxanthocereus Backeb., Maritimocereus Akers, Pseudoechinocereus Buining (nom. inval.), Seticereus Backeb., Seticleistocactus Backeb., Winteria F.Ritter, Winterocereus Backeb.
  • Cephalocleistocactus F.Ritter – see Cleistocactus
  • Denmoza Britton & Rose
  • Discocactus Pfeiff.
  • Echinopsis Zucc. – San Pedro cactus
synonyms: Acantholobivia Backeb., Acanthopetalus Y.Itô, Andenea Fric (nom. inval.), Aureilobivia Fric, nom. inval., Chamaecereus Britton & Rose, Chamaelobivia Y. Itô (nom. inval.), Cinnabarinea Fric ex F.Ritter, Echinolobivia Y.Itô (nom. inval.), Echinonyctanthus Lem., Furiolobivia Y.Itô (nom. inval.), Helianthocereus Backeb, Heterolobivia Y.Itô (nom. inval.), Hymenorebulobivia Fric (nom. inval.), Hymenorebutia Fric ex Buining, Leucostele Backeb., Lobirebutia Fric (nom. inval.), Lobivia Britton & Rose, Lobiviopsis Fric (nom. inval.), Megalobivia Y.Itô (nom. inval.), Mesechinopsis Y.Itô, Neolobivia Y.Itô, Pilopsis Y.Itô (nom. inval.), Pseudolobivia (Backeb.) Backeb., Rebulobivia Fric (nom. inval.), Salpingolobivia Y.Itô, Scoparebutia Fric & Kreuz. ex Buining, Setiechinopsis (Backeb.) de Haas, Soehrensia Backeb., Trichocereus (A.Berger) Riccob.
  • Espostoa Britton & Rose
synonyms: Binghamia Britton & Rose, Pseudoespostoa Backeb., Thrixanthocereus Backeb.,
  • Espostoopsis Buxb.
synonyms: Gerocephalus F.Ritter
  • Facheiroa Britton & Rose
synonyms: Zehntnerella Britton & Rose
Gymnocalycium moserianum
  • Gymnocalycium Pfeiff. ex Mittler – chin cactus
synonyms: Brachycalycium Backeb.
  • Haageocereus Backeb.
synonyms: Floresia Krainz & F.Ritter ex Backeb. (nom. inval.), Haageocactus Backeb. (nom. inval.), Lasiocereus F.Ritter, Neobinghamia Backeb., Peruvocereus Akers
  • × Haagespostoa G.D.Rowley
[= Haageocereus × Espostoa]
  • Harrisia Britton – apple cactus
synonyms: Eriocereus (A.Berger) Riccob., Roseocereus Backeb.
  • Lasiocereus F.Ritter – see Haageocereus
  • Leocereus Britton & Rose
  • Matucana Britton & Rose
synonyms: Eomatucana F.Ritter
  • Mila Britton & Rose
  • Oreocereus (A.Berger) Riccob.
synonyms: Arequipa Britton & Rose, Arequipiopsis Kreuz. & Buining, Morawetzia Backeb., Submatucana Backeb.
  • Oroya Britton & Rose
  • Pygmaeocereus H.Johnson & Backeb.
  • Rauhocereus Backeb.
Rebutia flavistyla
  • Rebutia K.Schum.
synonyms: Aylostera Speg., Bridgesia Backeb., Cylindrorebutia Fric & Kreuz., Digitorebutia Fric & Kreuz., Echinorebutia Fric (nom. inval.), Eurebutia Fric (nom. inval.), Gymnantha Y.Itô, Mediolobivia Backeb., Mediorebutia Fric (nom. inval.), Neogymnantha Y.Itô, Reicheocactus Backeb., Setirebutia Fric & Kreuz. (nom. inval.), Spegazzinia Backeb., Sulcorebutia Backeb., Weingartia Werderm.
  • Samaipaticereus Cárdenas
  • Weberbauerocereus Backeb.
synonyms: Meyenia Backeb.
  • Vatricania Backeb.
  • Yungasocereus F.Ritter

Notes and references
  1. Nyffeler, R. & Eggli, U. (2010), "A farewell to dated ideas and concepts: molecular phylogenetics and a revised suprageneric classification of the family Cactaceae", Schumannia, 6: 109–149, doi:10.5167/uzh-43285, S2CID 89650660
  2. Anderson 2001, pp. 99–103
  3. Hunt, D.R., ed. (2006), The New Cactus Lexicon (two volumes), Milborne Port: dh books, ISBN 978-0-9538134-4-5, cited in Bárcenas, Yesson & Hawkins 2011
  4. Bárcenas, Rolando T.; Yesson, Chris & Hawkins, Julie A. (2011), "Molecular systematics of the Cactaceae", Cladistics, 27 (5): 470–489, doi:10.1111/j.1096-0031.2011.00350.x, PMID 34875796, S2CID 83525136
  5. Edwards, Erika J.; Nyffeler, Reto & Donoghue, Michael J. (2005), "Basal cactus phylogeny: implications of Pereskia (Cactaceae) paraphyly for the transition to the cactus life form", American Journal of Botany, 92 (7): 1177–1188, doi:10.3732/ajb.92.7.1177, PMID 21646140
  6. Wallace, R.S. & Dickie, S.L. (2002), "Systematic implication of chloroplast DNA sequence variation in subfam. Opuntioideae (Cactaceae)", Succulent Plant Research, 6: 9–24, cited in Griffith & Porter 2009
  7. Griffith, M. Patrick & Porter, J. Mark (2009), "Phylogeny of Opuntioideae (Cactaceae)", International Journal of Plant Sciences, 170 (1): 107–116, doi:10.1086/593048, S2CID 85142301. Tree based on fig. 1 with tribes from fig. 2.
  8. Griffith & Porter 2009, p. 114
  9. Hernández-Hernández, Tania; Hernández, Héctor M.; De-Nova, J. Arturo; Puente, Raul; Eguiarte, Luis E. & Magallón, Susana (2011), "Phylogenetic relationships and evolution of growth form in Cactaceae (Caryophyllales, Eudicotyledoneae)", American Journal of Botany, 98 (1): 44–61, doi:10.3732/ajb.1000129, PMID 21613084
  10. Hunt, David (2016), CITES Cactaceae Checklist (PDF) (3rd ed.), Royal Botanic Gardens, ISBN 978-0-9933113-2-1, retrieved 2017-03-30
  11. Anderson 2001, pp. 100–103
  12. "Family: Cactaceae Juss., nom. cons. subfam. Opuntioideae", Germplasm Resources Information Network, United States Department of Agriculture, 2004-02-13, archived from the original on 2012-08-25, retrieved 2012-03-26
  13. Bárcenas, Rolando, Héctor M. Hernández, Patricia Hernández-Ledesma, and Luis Manuel Montoya Gómez (2021). Chichimecactus (Cactoideae, Cactaceae), a new genus based on molecular characterisation of highly endangered Strombocactus species. Phytotaxa Vol. 512 No. 3: 27 July 2021. DOI: https://doi.org/10.11646/phytotaxa.512.3.2
  14. Kiesling, R. & Ferrari, O. (2003), "Yavia cryptocarpa – conservation action on a new and interesting cactus", British Cactus and Succulent Journal, 21 (1): 20–25

Bibliography
  • Anderson, Edward F. (2001), The Cactus Family, Pentland, Oregon: Timber Press, ISBN 978-0-88192-498-5
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