Between brackets is the number of accepted species
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- Biota
- Kingdom Animalia
- Kingdom Archaea
- Kingdom Bacteria
- Kingdom Chromista
- Kingdom Fungi
- Kingdom Plantae
- Phylum Acritarcha †
- Phylum Algae (awaiting allocation)
- Phylum Algae incertae sedis
- Phylum Anthocerotophyta
- Phylum Bryophyta
- Phylum Calcitarcha †
- Phylum Charophyta
- Phylum Chlorophyta
- Phylum Eophyta †
- Phylum Glaucophyta
- Phylum Gymnospermophyta accepted as Tracheophyta
- Phylum Horneophyta †
- Phylum Magnoliophyta accepted as Tracheophyta
- Phylum Marchantiophyta
- Phylum Picozoa
- Phylum Plantae (awaiting allocation)
- Phylum Prasinodermatophyta
- Phylum Pteridophyta accepted as Tracheophyta
- Phylum Rhodelphidia
- Phylum Rhodophyta
- Phylum Sporae dispersae †
- Phylum Tracheophyta
- Subdivision Lycopodiophytina
- Subdivision Polypodiophytina
- Subdivision Spermatophytina
- Superclass Angiospermae
- Class Liliopsida accepted as Magnoliopsida
- Class Magnoliopsida
- Order Acorales
- Order Adoxales accepted as Dipsacales
- Order Alismatales
- Order Alstroemeriales accepted as Liliales
- Order Amaryllidales accepted as Asparagales
- Order Amborellales
- Order Apiales
- Order Apocynales accepted as Gentianales
- Order Aquifoliales
- Order Arales accepted as Alismatales
- Order Araliales accepted as Apiales
- Order Aralidiales accepted as Apiales
- Order Arecales
- Order Aristolochiales accepted as Piperales
- Order Asparagales
- Order Asterales
- Order Aucubales accepted as Garryales
- Order Austrobaileyales
- Order Balanophorales accepted as Santalales
- Order Batales accepted as Brassicales
- Order Begoniales accepted as Cucurbitales
- Order Berberidales accepted as Ranunculales
- Order Berberidopsidales
- Order Biebersteiniales accepted as Sapindales
- Order Boraginales
- Order Brassicales
- Order Brexiales accepted as Celastrales
- Order Bromeliales accepted as Poales
- Order Bruniales
- Order Burmanniales accepted as Dioscoreales
- Order Burserales accepted as Sapindales
- Order Buxales
- Order Callitrichales accepted as Lamiales
- Order Calycerales accepted as Asterales
- Order Campanulales accepted as Asterales
- Order Canellales
- Order Capparales accepted as Brassicales
- Order Caryophyllales
- Family Achatocarpaceae Heimerl, 1934
- Family Agdestidaceae Nakai, 1942 accepted as Sarcobataceae Behnke, 1997
- Family Aizoaceae Martinov, 1820
- Family Amaranthaceae de Jussieu, 1789
- Family Anacampserotaceae Eggli & Nyffeler, 2010
- Family Ancistrocladaceae Planchon ex Walpers, 1851
- Family Asteropeiaceae Takhtajan ex Reveal & Hoogland, 1990
- Family Barbeuiaceae Nakai, 1942
- Family Basellaceae Rafinesque, 1837
- Family Cactaceae de Jussieu, 1789
- Genus Pygmaeowintera B. Armbruster
- Genus Acanthanthus Y. Ito, 1981
- Genus Acanthinopsis P.V. Heath, 1992
- Genus Acanthocalycium Backeberg in Backeberg & F.M. Knuth, 1936
- Genus Acanthocephala Backeberg, 1938 accepted as Parodia Spegazzini, 1923
- Genus Acanthocereus N.L. Britton & J.N. Rose, 1909
- Genus Acantholobivia Y. Ito, 1957
- Genus Acantholobivia Backeberg, 1942 accepted as Echinopsis Zuccarini, 1837
- Genus Acanthopetalus Y. Ito, 1957 accepted as Echinopsis Zuccarini, 1837
- Genus Acanthorhipsalis M. Kimnach, 1983 accepted as Lepismium Pfeiffer, 1835
- Genus Acanthorhipsalis (K. Schumann) N.L. Britton & J.N. Rose, 1923 accepted as Lepismium Pfeiffer, 1835
- Genus Acanthosalpingolobivia Y. Itô, 1967
- Genus Acharagma (N.P. Taylor) C.E. Glass, 1997
- Genus Airampoa A.V. Fric, 1933 accepted as Opuntia (Linnaeus) P. Miller, 1754
- Genus Akersia Buining, 1961 accepted as Cleistocactus Lemaire, 1861
- Genus Ancistrocactus N.L. Britton & J.N. Rose, 1923 accepted as Sclerocactus N.L. Britton & Rose, 1922
- Genus Andenea K.G. Kreuzinger, 1935 accepted as Echinopsis Zuccarini, 1837
- Genus Andinopuntia A. Guiggi, 2011 accepted as Austrocylindropuntia Backeberg, 1938
- Genus Anhaloniopsis (F. Buxbaum) R. Mottram, 2014
- Genus Anhalonium Lemaire, 1839 accepted as Ariocarpus Scheidweiler, 1838
- Genus Anisocereus Backeberg, 1938 accepted as Pachycereus (A. Berger) N.L. Britton & J.N. Rose, 1909
- Genus Aporberocereus G.D. Rowley, 1982
- Genus Aporechinopsis G.D. Rowley, 1980
- Genus Aporepiphyllum G.D. Rowley, 1980 accepted as Aporophyllum D.R. Hunt in Willis, 1966
- Genus Aporgera M.H.J. van der Meer, 2018
- Genus Aporicereus R. Mottram, 2014
- Genus Aporocactus Lemaire, 1860 accepted as Disocactus J. Lindley, 1845
- Genus Aporocereus A.V. Fric & K. Kreuzinger in K. Kreuzinger, 1935 accepted as Disocactus J. Lindley, 1845
- Genus Aporochia G.D. Rowley, 1972
- Genus Aporodisocactus C. Knebel, 1949
- Genus Aporoheliocereus Hort. ex H.K. Airy Shaw in Willis, 1966
- Genus Aporoheliochia P.V. Heath, 1984
- Genus Aporophyllum D.R. Hunt in Willis, 1966
- Genus Aporophyllum H. Johnson ex G.D. Rowley, 1982 accepted as Aporophyllum D.R. Hunt in Willis, 1966
- Genus Aporophyllum H. Johnson, 1955 accepted as Aporophyllum D.R. Hunt in Willis, 1966
- Genus Aporotrichocereus Hort. ex H.K. Airy Shaw in Willis, 1966
- Genus Arequipa N.L. Britton & J.N. Rose, 1922 accepted as Oreocereus (A. Berger) Riccobono, 1909
- Genus Arequipiopsis Kreuzinger & Buining, 1941 accepted as Oreocereus (A. Berger) Riccobono, 1909
- Genus Ariocarpus Scheidweiler, 1838
- Genus Ariocereus P.V. Heath, 1992
- Genus Arioechinopsis R. Mottram, 2016
- Genus Armatocereus Backeberg, 1938
- Genus Arrojadoa N.L. Britton & J.N. Rose, 1920
- Genus Arrojadoopsis A. Guiggi, 2007 accepted as Arrojadoa Mattfeld in Pilger, 1923
- Genus Arthrocereus A. Berger, 1929
- Genus Arthrocleistocactus A. Mordhorst, 2020
- Genus Astrobergia A. Piñal, 2010
- Genus Astroferocactus P. Licznerski, 2009
- Genus Astrophyton G. Lawrence accepted as Astrophytum Lemaire, 1839
- Genus Astrophytum Lemaire, 1839
- Genus Aulacothele Monville, 1846 accepted as Coryphantha (Engelmann) Lemaire, 1868
- Genus Aureilobivia A.V. Fric ex K. Kreuzinger, 1935 accepted as Echinopsis Zuccarini, 1837
- Genus Austrocactus N.L. Britton & J.N. Rose, 1922
- Genus Austrocephalocereus Backeberg, 1938 accepted as Micranthocereus Backeberg, 1938
- Genus Austrocereus R. Mottram, 2014
- Genus Austrocylindropuntia Backeberg, 1938
- Genus Austronotia C. Sherrah, 2020
- Genus Aylostera Spegazzini, 1923 accepted as Rebutia K. Schumann, 1895
- Genus Aztekium Boedeker, 1929
- Genus Aztekonia R. Mottram, 2014
- Genus Azureocereus Akers & Johnson, 1949 accepted as Browningia N.L. Britton & J.N. Rose, 1920
- Genus Backebergia Bravo, 1953 accepted as Pachycereus (A. Berger) N.L. Britton & J.N. Rose, 1909
- Genus Banfiopuntia A. Guiggi, 2011 accepted as Austrocylindropuntia Backeberg, 1938
- Genus Bartschella N.L. Britton & J.N. Rose, 1923 accepted as Mammillaria A.H. Haworth, 1812
- Genus Beahmara P.V. Heath, 1992
- Genus Bergerocactus N.L. Britton & J.N. Rose, 1909
- Genus Bergerocereus A.V. Fric & K. Kreuzinger in K. Kreuzinger, 1935 accepted as Bergerocactus N.L. Britton & J.N. Rose, 1909
- Genus Binghamia N.L. Britton & J.N. Rose, 1920 accepted as Espostoa N.L. Britton & J.N. Rose, 1920
- Genus Bisnaga Orcutt, 1926 accepted as Ferocactus N.L. Britton & J.N. Rose, 1922
- Genus Blossfeldia Werdermann, 1937
- Genus Bolivicactus A.B. Doweld, 2000
- Genus Bolivicereus H.M. Cárdenas, 1951 accepted as Cleistocactus Lemaire, 1861
- Genus Bolivihanburya A. Guiggi, 2016
- Genus Bonifazia Standley & Steyermark, 1944 accepted as Disocactus J. Lindley, 1845
- Genus Borageocereus M.H.J. van der Meer, 2019
- Genus Borzicactella H. Johnson ex F. Ritter, 1981 accepted as Cleistocactus Lemaire, 1861
- Genus Borzicactus Riccobono, 1909 accepted as Cleistocactus Lemaire, 1861
- Genus Borzicana M.H.J. van der Meer, 2019
- Genus Borzicereus A.V. Fric & K. Kreuzinger in K. Kreuzinger, 1935 accepted as Cleistocactus Lemaire, 1861
- Genus Borzichocereus M.H.J. van der Meer, 2019
- Genus Borzimoza G.D. Rowley, 1980
- Genus Borzinopsis G.D. Rowley, 1982
- Genus Borzipostoa G.D. Rowley, 1982
- Genus Borziroya G.D. Rowley, 1982
- Genus Borzivia M.H.J. van der Meer, 2019
- Genus Brachycalycium Backeberg, 1942 accepted as Gymnocalycium L.K.G. Pfeiffer ex L. Mittler, 1844
- Genus Brachycereus N.L. Britton & J.N. Rose, 1920
- Genus Bragaia E. Esteves Pereira, A. Hofacker & P.J. Braun, 2009 accepted as Brasilicereus Backeberg, 1938
- Genus Brasilicactus Backeberg, 1942 accepted as Parodia Spegazzini, 1923
- Genus Brasilicereus Backeberg, 1938
- Genus Brasiliharrisia A. Guiggi, 2024
- Genus Brasiliopuntia (K.M. Schumann) A. Berger, 1926
- Genus Brasiliparodia F. Ritter, 1979 accepted as Parodia Spegazzini, 1923
- Genus Brasilocactus A.V. Fric ex K. Kreuzinger, 1935 accepted as Parodia Spegazzini, 1923
- Genus Bravocactus A.B. Doweld, 1998
- Genus Bridgesia Backeberg, 1935 accepted as Rebutia K. Schumann, 1895
- Genus Brittonia Houghton & C.A. Armstrong, 1934 accepted as Ferocactus N.L. Britton & J.N. Rose, 1922
- Genus Brittonrosea Spegazzini, 1923 accepted as Echinocactus Link & Otto, 1827
- Genus Browningia N.L. Britton & J.N. Rose, 1920
- Genus Buchheimara P.V. Heath, 1992
- Genus Buiningia F. Buxbaum in H. Krainz, 1971 accepted as Coleocephalocereus Backeberg, 1938
- Genus Cactara B.K. Boom, 1957
- Genus Cactodendron J.M. Bigelow accepted as Opuntia (Linnaeus) P. Miller, 1754
- Genus Cactus Linnaeus, 1753 accepted as Mammillaria A.H. Haworth, 1812
- Genus Cactus Britton & Rose, 1922 accepted as Melocactus Link & Otto, 1827
- Genus Cactus A.C. Lemaire accepted as Opuntia (Linnaeus) P. Miller, 1754
- Genus Caerulocereus A. Guiggi, 2022 accepted as Pilosocereus R.S. Byles & G.D. Rowley, 1957
- Genus Callisonara P.V. Heath, 1992
- Genus Calymmanthium Ritter, 1962
- Genus Carlrettigara R. Mottram, 2014
- Genus Carnegia accepted as Carnegiea N.L. Britton & J.N. Rose, 1908
- Genus Carnegiea N.L. Britton & J.N. Rose, 1908
- Genus Cassytha P. Miller, 1768 accepted as Rhipsalis J. Gaertner, 1788
- Genus Castellanosia H.M. Cárdenas, 1951
- Genus Cephalepiphyllum R. Mottram, 1990
- Genus Cephalocereus Pfeiffer, 1838
- Genus Cephalocleistocactus Ritter, 1959 accepted as Cleistocactus Lemaire, 1861
- Genus Cephalomamillaria Fric, 1924 accepted as Epithelantha Weber ex N.L. Britton & J.N. Rose, 1922
- Genus Cephalomammillaria Fric accepted as Epithelantha Weber ex N.L. Britton & J.N. Rose, 1922
- Genus Cephaxbaumia M.H.J. van der Meer, 2019
- Genus Cepheliocereus G.D. Rowley, 1980 accepted as Diphalocereus M.H.J. van der Meer, 2018
- Genus Ceratistes Labouret accepted as Eriosyce R.A. Philippi, 1872
- Genus Cerenocereus G. Gutte, 2013
- Genus Cereopsis R. Mottram, 2014
- Genus Cerephyllum R. Mottram, 1990
- Genus Cereus P. Miller, 1754
- Genus Cerevillea G.D. Rowley, 1982
- Genus Cernikara T.S. Harvey, 2014
- Genus Chaffeyopuntia A.V. Fric ex K. Kreuzinger, 1935 accepted as Opuntia (Linnaeus) P. Miller, 1754
- Genus Chamaecactus P.V. Heath, 1992
- Genus Chamaecereopsis P.V. Heath, 1992
- Genus Chamaecereus N.L. Britton & J.N. Rose, 1922 accepted as Echinopsis Zuccarini, 1837
- Genus Chamaecladodia P.V. Heath, 1992
- Genus Chamaelobivia Y. Ito, 1957 accepted as Echinopsis Zuccarini, 1837
- Genus Chamaelobivia A.J. Timmermans, 1963
- Genus Chamaelopsis H. Johnson, 1960 accepted as Chamaelopsis J.H. Johnson ex Y. Itô, 1967
- Genus Chamaelopsis H. Johnson ex G.D. Rowley, 1982 accepted as Chamaelopsis J.H. Johnson ex Y. Itô, 1967
- Genus Chamaelopsis J.H. Johnson ex Y. Itô, 1967
- Genus Chamageocereus M.H.J. van der Meer, 2020
- Genus Chamygmaeocereus A. Mordhorst, 2007 accepted as Chamageocereus M.H.J. van der Meer, 2020
- Genus Chapadocereus (P.J. Braun & E. Esteves Pereira) A. Guiggi, 2024
- Genus Chiapasia N.L. Britton & J.N. Rose, 1923 accepted as Disocactus J. Lindley, 1845
- Genus Chiapasophyllum A.B. Doweld, 2001
- Genus Chiapora H. Johnson, 1958 accepted as Chiapora H. Johnson ex G.D. Rowley, 1982
- Genus Chiapora H. Johnson ex G.D. Rowley, 1982
- Genus Chichimecactus R.T. Bárcenas, H.M. Hernández & P. Hernández-Ledesma, 2021
- Genus Chichipia C. Backeberg, 1950 accepted as Polaskia Backeberg, 1949
- Genus Chilenia Backeberg, 1938
- Genus Chileniopsis Backeberg in Backeberg & F.M. Knuth, 1936 accepted as Eriosyce R.A. Philippi, 1872
- Genus Chileocactus A.V. Fric, 1931 accepted as Eriosyce R.A. Philippi, 1872
- Genus Chileorebutia Fric ex F. Ritter, 1959 accepted as Eriosyce R.A. Philippi, 1872
- Genus Chiliorebutia A.V. Fric, 1938 accepted as Eriosyce R.A. Philippi, 1872
- Genus Chilita Orcutt, 1926 accepted as Mammillaria A.H. Haworth, 1812
- Genus Chimerophora Y. Itô, 1981 accepted as Hylogymnocalycium G.D. Rowley, 2005
- Genus Chrysocactus Y. Ito, 1950 accepted as Parodia Spegazzini, 1923
- Genus Cinnabarinea A.V. Fric ex F. Ritter, 1980 accepted as Echinopsis Zuccarini, 1837
- Genus Cintia K. Kníze & J. Ríha, 1995
- Genus Cipocereus F. Ritter, 1979
- Genus Clavarioidia A.V. Fric & E. Schelle ex K. Kreuzinger, 1935 accepted as Opuntia (Linnaeus) P. Miller, 1754
- Genus Clavatopuntia A.V. Fric & E. Schelle ex K. Kreuzinger, 1935
- Genus Cleiferocactus G.D. Rowley, 2014
- Genus Cleipaticereus G.D. Rowley, 1994
- Genus Cleistaageocereus A. Mordhorst, 2011
- Genus Cleistepiphyllum R. Mottram, 2014
- Genus Cleistoborzicactus G.D. Rowley, 1982
- Genus Cleistocactus Lemaire, 1861
- Genus Cleistocana G.D. Rowley, 1994
- Genus Cleistocereus A.V. Fric & K. Kreuzinger in K. Kreuzinger, 1935 accepted as Cleistocactus Lemaire, 1861
- Genus Cleistochamaecereus P.V. Heath, 1992
- Genus Cleistoechinocana P. Licznerski, 2009
- Genus Cleistonocereus G.D. Rowley, 2004
- Genus Cleistopsis F. Strigl, 1979
- Genus Cleistoza G.D. Rowley, 2004
- Genus Cleovia M.H.J. van der Meer, 2019
- Genus Clistanthocereus Backeberg, 1937 accepted as Cleistocactus Lemaire, 1861
- Genus Cochemiea (K. Brandegee) Walton, 1899 accepted as Mammillaria A.H. Haworth, 1812
- Genus Cochiseia W.H. Earle, 1976 accepted as Escobaria N.L. Britton & J.N. Rose, 1923
- Genus Cockeara P.V. Heath, 1992
- Genus Coleocephalocereus Backeberg, 1938
- Genus Coleocereus P.V. Heath, 1992
- Genus Coloradoa Boissevain & C. Davidson, 1940 accepted as Sclerocactus N.L. Britton & Rose, 1922
- Genus Colosocereus G.D. Rowley, 1994
- Genus Consolea Lemaire, 1862
- Genus Copiapoa N.L. Britton & J.N. Rose, 1922
- Genus Corryocactus N.L. Britton & J.N. Rose, 1920
- Genus Corryocereus A.V. Fric & K. Kreuzinger in K. Kreuzinger, 1935 accepted as Corryocactus N.L. Britton & J.N. Rose, 1920
- Genus Corynopuntia F.M. Knuth in Backeberg & F.M. Knuth, 1936 accepted as Opuntia (Linnaeus) P. Miller, 1754
- Genus Coryopuntia R. Mottram, 2016
- Genus Coryphantha (Engelmann) Lemaire, 1868
- Genus Cosmantha Y. Itô, 1967 accepted as Echinopsis Zuccarini, 1837
- Genus Courantara P.V. Heath, 1992
- Genus Cremnocereus M. Lowry, M. Winberg & J. Gutierrez Romero, 2017
- Genus Cryptocarpocactus A. Guiggi, 2024
- Genus Cryptocereus E.J. Alexander, 1950 accepted as Selenicereus (A. Berger) N.L. Britton & J.N. Rose, 1909
- Genus Cullmannia C. Distefano, 1956 accepted as Peniocereus (A. Berger) N.L. Britton & J.N. Rose, 1909
- Genus Cumarinia F. Buxbaum, 1951
- Genus Cumulopuntia F. Ritter, 1980
- Genus Cylindrolobivia Y. Itô, 1967
- Genus Cylindronia M.A. Baker, L.C. Majure, M.A. Cloud-Hughes & J.P. Rebman, 2022
- Genus Cylindropuntia (Engelmann) F.M. Knuth, 1930
- Genus Cylindrorebutia A.V. Fric & K.G. Kreuzinger, 1938 accepted as Rebutia K. Schumann, 1895
- Genus Dactylanthocactus Y. Ito, 1957 accepted as Parodia Spegazzini, 1923
- Genus Deamia N.L. Britton & J.N. Rose, 1920
- Genus Delaetia Backeberg, 1962 accepted as Eriosyce R.A. Philippi, 1872
- Genus Demnosa A.V. Fric, 1929 accepted as Cleistocactus Lemaire, 1861
- Genus Dendrocereus N.L. Britton & J.N. Rose, 1920
- Genus Denmoza N.L. Britton & J.N. Rose, 1922
- Genus Dialis M.H.J. van der Meer, 2018
- Genus Differa M.H.J. van der Meer, 2018
- Genus Digitorebutia A.V. Fric & K. Kreuzinger ex A.F.H. Buining, 1940 accepted as Rebutia K. Schumann, 1895
- Genus Digitostigma C.G. Velazco Macías & M. Nevárez de los Reyes, 2002 accepted as Astrophytum Lemaire, 1839
- Genus Dilectus M.H.J. van der Meer, 2018
- Genus Dinocereus M.H.J. van der Meer, 2018
- Genus Diphalocereus M.H.J. van der Meer, 2018
- Genus Diploperianthium F. Ritter accepted as Calymmanthium Ritter, 1962
- Genus Disapora H. Johnson, 1958
- Genus Disapora H. Johnson ex G.D. Rowley, 1982
- Genus Discocactus Pfeiffer, 1837
- Genus Diselvia M.H.J. van der Meer, 2018
- Genus Disheliocereus G.D. Rowley, 1982 accepted as Disocactus J. Lindley, 1845
- Genus Disisocactus A.B. Doweld, 2001
- Genus Disisocactus G. Kunze, 1855 accepted as Disocactus J. Lindley, 1845
- Genus Disisorhipsalis A.B. Doweld, 2001
- Genus Disivia M.H.J. van der Meer, 2018
- Genus Disocactus J. Lindley, 1845
- Genus Disocereus A.V. Fric & K. Kreuzinger in K. Kreuzinger, 1935 accepted as Disocactus J. Lindley, 1845
- Genus Disochia G.D. Rowley, 1982 accepted as Disocactus J. Lindley, 1845
- Genus Disolocereus E. Meier, 2009
- Genus Disonopsis G.D. Rowley, 2004
- Genus Disophyllum C.F. Innes, 1968
- Genus Disoquipa M.H.J. van der Meer, 2018
- Genus Disoselenicereus E. Meier, 1990
- Genus Disuntia M.H.J. van der Meer, 2018
- Genus Dolichothele (K. Schumann) N.L. Britton & J.N. Rose, 1923 accepted as Mammillaria A.H. Haworth, 1812
- Genus Dracocactus Y. Ito, 1950 accepted as Eriosyce R.A. Philippi, 1872
- Genus Ebnerella F. Buxbaum, 1951 accepted as Mammillaria A.H. Haworth, 1812
- Genus Eccremocactus N.L. Britton & J.N. Rose, 1913 accepted as Weberocereus N.L. Britton & J.N. Rose, 1909
- Genus Eccremocereus A.V. Fric & K. Kreuzinger in K. Kreuzinger, 1935 accepted as Weberocereus N.L. Britton & J.N. Rose, 1909
- Genus Echinaageocereus A. Mordhorst, 2011
- Genus Echinaporus Y. Ito, 1981
- Genus Echinobergia R. Mottram, 1990
- Genus Echinobivia G.D. Rowley, 1966
- Genus Echinobutia P.V. Heath, 1992
- Genus Echinocactus Link & Otto, 1827
- Genus Echinocalycium P.V. Heath, 1992 accepted as Echinogymnocalycium R. Mottram, 2016
- Genus Echinocana A. Mordhorst, 2020
- Genus Echinocephala M.H.J. van der Meer, 2019 accepted as Echinocactus Link & Otto, 1827
- Genus Echinocereopsis P.V. Heath, 1992
- Genus Echinocereus Engelmann in Wislizenus, 1848
- Genus Echinocoxia P.V. Heath, 1992
- Genus Echinocylindra Y. Ito, 1981
- Genus Echinoferocactus P.V. Heath, 1992
- Genus Echinofossulocactus Lawrence, 1841 accepted as Echinocactus Link & Otto, 1827
- Genus Echinofossulocactus Britton & Rose, 1922 accepted as Stenocactus (K.M. Schumann) A. Berger, 1929
- Genus Echinogymnocalycium R. Mottram, 2016
- Genus Echinolobivia Y. Ito, 1957 accepted as Echinopsis Zuccarini, 1837
- Genus Echinomastus N.L. Britton & J.N. Rose, 1922
- Genus Echinomillaria R. Mottram, 2014
- Genus Echinomoza G.D. Rowley, 2004
- Genus Echinonotocactus P.V. Heath, 1992
- Genus Echinonyctanthus Lemaire, 1839 accepted as Echinopsis Zuccarini, 1837
- Genus Echinopalxochia P.V. Heath, 1992
- Genus Echinoparodia R. Mottram, 1990
- Genus Echinopsis Zuccarini, 1837
- Genus Echinorebutia A.V. Fric ex K. Kreuzinger, 1935 accepted as Rebutia K. Schumann, 1895
- Genus Echinostele M.H.J. van der Meer, 2021
- Genus Echinulocactus R. Mottram, 2014
- Genus Efossus Orcutt, 1926 accepted as Stenocactus (K.M. Schumann) A. Berger, 1929
- Genus Elbakyanara M.H.J. van der Meer, 2019
- Genus Emorycactus A.B. Doweld, 1996
- Genus Encephalocarpus A. Berger, 1929 accepted as Pelecyphora Ehrenberg, 1843
- Genus Eomatucana Ritter, 1965 accepted as Matucana N.L. Britton & J.N. Rose, 1922
- Genus Eopuntia Chaney, 1944 †
- Genus Epicereus R. Mottram, 2014
- Genus Epigymnocalycium R. Mottram, 2016
- Genus Epiphyllanthus A. Berger, 1905 accepted as Schlumbergera Lemaire, 1858
- Genus Epiphyllopsis A. Berger, 1929 accepted as Hatiora N.L. Britton & J.N. Rose in L.H. Bailey, 1915
- Genus Epiphyllum A.H. Haworth, 1812
- Genus Epiphyllum L.K.G. Pfeiffer accepted as Schlumbergera Lemaire, 1858
- Genus Epipilosocereus R. Mottram, 2014
- Genus Epipuntia R. Mottram, 2014
- Genus Epithelantha Weber ex N.L. Britton & J.N. Rose, 1922
- Genus Epivia M.H.J. van der Meer, 2018
- Genus Epixochia G.D. Rowley in C. Backeberg, 1962 accepted as Disophyllum C.F. Innes, 1968
- Genus Erdisia N.L. Britton & J.N. Rose, 1920 accepted as Corryocactus N.L. Britton & J.N. Rose, 1920
- Genus Eriocactus Backeberg, 1942 accepted as Parodia Spegazzini, 1923
- Genus Eriocephala Backeberg, 1938 accepted as Parodia Spegazzini, 1923
- Genus Eriocereopsis A.B. Doweld, 2001
- Genus Eriocereus (A. Berger) Riccobono, 1909 accepted as Harrisia N.L. Britton, 1909
- Genus Eriosyce R.A. Philippi, 1872
- Genus Erythrorhipsalis A. Berger, 1920 accepted as Rhipsalis J. Gaertner, 1788
- Genus Escobaria N.L. Britton & J.N. Rose, 1923
- Genus Escobariopsis A.B. Doweld, 2000
- Genus Escobesseya Hester, 1945 accepted as Escobaria N.L. Britton & J.N. Rose, 1923
- Genus Escobrittonia A.B. Doweld, 2000
- Genus Escocoryphantha A.B. Doweld, 1999
- Genus Escontria J.N. Rose, 1906
- Genus Espocana P.V. Heath, 1992
- Genus Espostingia G.D. Rowley, 1982
- Genus Espostoa N.L. Britton & J.N. Rose, 1920
- Genus Espostocactus R. Mottram, 1990
- Genus Espostoopsis F. Buxbaum in H. Krainz, 1968
- Genus Estevesia P.J. Braun, 2009 accepted as Cereus P. Miller, 1754
- Genus Eulychnia R.A. Philippi, 1860
- Genus Eulychnocactus C. Backeberg, 1931 accepted as Corryocactus N.L. Britton & J.N. Rose, 1920
- Genus Euporteria Kreuzinger & Buining, 1941 accepted as Eriosyce R.A. Philippi, 1872
- Genus Eurebutia (C. Backeberg) G. Vande Weghe, 1938 accepted as Rebutia K. Schumann, 1895
- Genus Eversonara P.V. Heath, 1992
- Genus Facheiroa N.L. Britton & J.N. Rose, 1920
- Genus Feastara P.V. Heath, 1992
- Genus Ferobergia C. Glass, 1966
- Genus Ferobergia Ono & Y. Ito in Y. Ito, 1981
- Genus Ferocactus N.L. Britton & J.N. Rose, 1922
- Genus Ferofossulocactus G.D. Rowley, 1980
- Genus Feroleinia M.H.J. van der Meer, 2020
- Genus Ficindica J.B. Saint-Lager, 1880 accepted as Opuntia (Linnaeus) P. Miller, 1754
- Genus Fimbriatocactus A. Guiggi, 2023
- Genus Floresia Krainz & F. Ritter ex Backeberg, 1959 accepted as Haageocereus Backeberg, 1933
- Genus Floribunda F. Ritter, 1979 accepted as Cipocereus F. Ritter, 1979
- Genus Fobea A.V. Fric ex F. Boedeker, 1933 accepted as Escobaria N.L. Britton & J.N. Rose, 1923
- Genus Frailea N.L. Britton & J.N. Rose, 1922
- Genus Fricara P.V. Heath, 1992
- Genus Friesia A.V. Fric, 1930 accepted as Parodia Spegazzini, 1923
- Genus Furiolobivia Y. Ito, 1957 accepted as Echinopsis Zuccarini, 1837
- Genus Geohintonia C.E. Glass & W.A. Fitz Maurice, 1992
- Genus Gerocephalus F. Ritter, 1968 accepted as Espostoopsis F. Buxbaum in H. Krainz, 1968
- Genus Glandulicactus Backeberg, 1938 accepted as Sclerocactus N.L. Britton & Rose, 1922
- Genus Glandulicereus A. Guiggi, 2012 accepted as Stenocereus (A. Berger) Riccobono, 1909
- Genus Glandulifera (J. Salm-Dyck) Fric, 1924 accepted as Coryphantha (Engelmann) Lemaire, 1868
- Genus Graeserara A. Mordhorst, 2011
- Genus Griseocactus A. Guiggi, 2012 accepted as Stenocereus (A. Berger) Riccobono, 1909
- Genus Griseocereus A. Guiggi, 2012 accepted as Stenocereus (A. Berger) Riccobono, 1909
- Genus Griseocereus P.V. Heath, 1998 accepted as Stenocereus (A. Berger) Riccobono, 1909
- Genus Grisulatocereus P.V. Heath, 1998
- Genus Grusonia F. Reichenbach ex N.L. Britton & J.N. Rose, 1919
- Genus Guillauminara P.V. Heath, 1992
- Genus Gymnantha Y. Ito, 1957 accepted as Rebutia K. Schumann, 1895
- Genus Gymnanthocereus Backeberg, 1937 accepted as Cleistocactus Lemaire, 1861
- Genus Gymnobutia P.V. Heath, 1992
- Genus Gymnocactus Backeberg, 1938 accepted as Turbinicarpus F. Buxbaum & Backeberg, 1937
- Genus Gymnocactus V. John & J. Ríha, 1981
- Genus Gymnocalicium L.K.G. Pfeiffer ex L. Mittler, 1844
- Genus Gymnocalycium L.K.G. Pfeiffer ex L. Mittler, 1844
- Genus Gymnocereus Backeberg, 1959 accepted as Browningia N.L. Britton & J.N. Rose, 1920
- Genus Gymnochinopsis P.V. Heath, 1992
- Genus Gymnophora P.V. Heath, 1992
- Genus Gymnorebutia A.B. Doweld, 2001
- Genus Haagea A.V. Fric, 1925 accepted as Mammillaria A.H. Haworth, 1812
- Genus Haageocactus Backeberg, 1931 accepted as Haageocereus Backeberg, 1933
- Genus Haageocana A. Mordhorst, 2020
- Genus Haageocereus Backeberg, 1933
- Genus Haagespostoa G.D. Rowley, 1982
- Genus Haagivia M.H.J. van der Meer, 2019
- Genus Hamatocactus N.L. Britton & J.N. Rose, 1922 accepted as Thelocactus (K.M. Schumann) N.L. Britton & Rose, 1922
- Genus Hariota Adanson, 1763 accepted as Rhipsalis J. Gaertner, 1788
- Genus Hariota A.P. de Candolle, 1834 accepted as Hatiora N.L. Britton & J.N. Rose in L.H. Bailey, 1915
- Genus Harricereus G.D. Rowley, 1982
- Genus Harrisia N.L. Britton, 1909
- Species Harrisia aboriginum Small
- Species Harrisia bonplandii (Parmentier) Britt. & Rose accepted as Harrisia pomanensis Weber
- Species Harrisia donae-antoniae M.L. Hooten
- Species Harrisia fragrans Small
- Species Harrisia martinii (Labouret) Britt.
- Species Harrisia pomanensis Weber
- Species Harrisia portoricensis Britt.
- Species Harrisia simpsonii Small
- Species Harrisia simpsonii Small ex Britton & Rose, 1920
- Genus Harrisinopsis G.D. Rowley, 1982
- Genus Haseltonia Backeberg, 1949 accepted as Cephalocereus Pfeiffer, 1838
- Genus Hatiora N.L. Britton & J.N. Rose in L.H. Bailey, 1915
- Genus Heliabravoa Backeberg, 1956 accepted as Polaskia Backeberg, 1949
- Genus Helianthocereus Backeberg, 1949 accepted as Echinopsis Zuccarini, 1837
- Genus Heliaporus G.D. Rowley, 1951 accepted as Aporoheliocereus Hort. ex H.K. Airy Shaw in Willis, 1966
- Genus Heliara M.H.J. van der Meer, 2018
- Genus Helioapocryptus Meier, 1981
- Genus Heliocactus J.A. Janse, 1938
- Genus Heliocereopsis P.V. Heath, 1992
- Genus Heliocereus N.L. Britton & J.N. Rose, 1909 accepted as Disocactus J. Lindley, 1845
- Genus Heliochia G.D. Rowley in C. Backeberg, 1962
- Genus Heliocryptus Meier, 1981
- Genus Helioselenius G.D. Rowley, 1951 accepted as Disoselenicereus E. Meier, 1990
- Genus Heliosocereus Glass & Foster, 1971
- Genus Heliphyllum G.D. Rowley in C. Backeberg, 1962 accepted as Disophyllum C.F. Innes, 1968
- Genus Heptocereus P.V. Heath, 1983
- Genus Hertrichocereus Backeberg, 1950 accepted as Stenocereus (A. Berger) Riccobono, 1909
- Genus Heterolobivia Y. Ito, 1950 accepted as Echinopsis Zuccarini, 1837
- Genus Heuffara M.H.J. van der Meer, 2019
- Genus Hickenia N.L. Britton & J.N. Rose, 1922 accepted as Parodia Spegazzini, 1923
- Genus Hildewintera F. Ritter, 1966 accepted as Cleistocactus Lemaire, 1861
- Genus Hildmannia Kreuzinger & Buining, 1941 accepted as Eriosyce R.A. Philippi, 1872
- Genus Homalocephala N.L. Britton & J.N. Rose, 1922 accepted as Echinocactus Link & Otto, 1827
- Genus Horridocactus Backeberg, 1938 accepted as Eriosyce R.A. Philippi, 1872
- Genus Hyalocereus accepted as Hylocereus (A. Berger) N.L. Britton & J.N. Rose, 1909
- Genus Hylocalycium P.V. Heath, 1987 accepted as Hylogymnocalycium G.D. Rowley, 2005
- Genus Hylocereus (A. Berger) N.L. Britton & J.N. Rose, 1909
- Genus Hylogymnocalycium G.D. Rowley, 2005
- Genus Hylophyllum P.V. Heath, 1992
- Genus Hylorhipsalis A.B. Doweld, 2001
- Genus Hymenorebulobivia A.V. Fric ex K. Kreuzinger, 1935 accepted as Echinopsis Zuccarini, 1837
- Genus Hymenorebutia A.V. Fric ex A.F.H. Buining, 1939 accepted as Echinopsis Zuccarini, 1837
- Genus Innesara P.V. Heath, 1992
- Genus Isillocactus (P.V. Heath) M.H.J. van der Meer, 2019
- Genus Islaya Backeberg, 1934 accepted as Eriosyce R.A. Philippi, 1872
- Genus Isolatocereus (Backeberg) Backeberg, 1942 accepted as Stenocereus (A. Berger) Riccobono, 1909
- Genus Jasminocereus N.L. Britton & J.N. Rose, 1920
- Genus Joyceara P.V. Heath, 1992
- Genus Kadenicarpus A.B. Doweld, 1998
- Genus Kimnachia S. Arias & N. Korotkova in Korotkova et al., 2017 accepted as Pseudorhipsalis N.L. Britton & Rose, 1923
- Genus Kleinerara P.V. Heath, 1992
- Genus Knebelara P.V. Heath, 1992
- Genus Krainzia Backeberg, 1938 accepted as Mammillaria A.H. Haworth, 1812
- Genus Kroenleinia J. Lodé, 2014
- Genus Lactomamillara Fric, 1924 accepted as Mammillaria A.H. Haworth, 1812
- Genus Lactomammillaria Fric accepted as Mammillaria A.H. Haworth, 1812
- Genus Lagenosocereus A.B. Doweld, 2002
- Genus Lasiocereus F. Ritter, 1966 accepted as Haageocereus Backeberg, 1933
- Genus Leia M.H.J. van der Meer, 2022
- Genus Lemaireocereus N.L. Britton & J.N. Rose, 1909 accepted as Pachycereus (A. Berger) N.L. Britton & J.N. Rose, 1909
- Genus Leocereus N.L. Britton & J.N. Rose, 1920
- Genus Lepidocoryphantha Backeberg, 1938 accepted as Coryphantha (Engelmann) Lemaire, 1868
- Genus Lepismium Pfeiffer, 1835
- Genus Leptocereus (A. Berger) N.L. Britton & J.N. Rose, 1909
- Genus Leptocladia F. Buxbaum, 1951 accepted as Mammillaria A.H. Haworth, 1812
- Genus Leptocladodia F. Buxbaum, 1954 accepted as Mammillaria A.H. Haworth, 1812
- Genus Leuchtenbergia W.J. Hooker, 1848
- Genus Leuchtenfera Arakawa & Y. Ito in Y. Ito, 1981
- Genus Leucomoza M.H.J. van der Meer, 2021
- Genus Leucostele Backeberg, 1953 accepted as Echinopsis Zuccarini, 1837
- Genus Leuenbergeria J. Lodé, 2012
- Genus Liskeara A. Mordhorst, 2020
- Genus Lobeira E.J. Alexander, 1944 accepted as Disocactus J. Lindley, 1845
- Genus Lobirebutia A.V. Fric accepted as Echinopsis Zuccarini, 1837
- Genus Lobivara B.K. Boom, 1957
- Genus Lobivia N.L. Britton & J.N. Rose, 1922 accepted as Echinopsis Zuccarini, 1837
- Genus Lobiviopsis A.V. Fric ex K. Kreuzinger, 1935 accepted as Echinopsis Zuccarini, 1837
- Genus Lobivopsis H. Johnson ex G.D. Rowley, 1982
- Genus Lobivopsis H. Johnson, 1961
- Genus Lodia A. Mosco & C. Zanovello, 2000
- Genus Lophocereus (A. Berger) N.L. Britton & J.N. Rose, 1909 accepted as Pachycereus (A. Berger) N.L. Britton & J.N. Rose, 1909
- Genus Lophophora J.M. Coulter, 1894
- Genus Loxanthocereus Backeberg, 1937 accepted as Cleistocactus Lemaire, 1861
- Genus Loxicactus M.H.J. van der Meer, 2019
- Genus Loxoa M.H.J. van der Meer, 2019
- Genus Lutterlohara P.V. Heath, 1992
- Genus Lymanbensonia M. Kimnach, 1984 accepted as Lepismium Pfeiffer, 1835
- Genus Macdougallara P.V. Heath, 1992
- Genus Machaerocereus N.L. Britton & J.N. Rose, 1920 accepted as Stenocereus (A. Berger) Riccobono, 1909
- Genus Maierocactus Rost, 1925 accepted as Astrophytum Lemaire, 1839
- Genus Maihuenia (R.A. Philippi ex F.A.C. Weber) K.M. Schumann, 1898
- Genus Maihueniopsis C.L. Spegazzini, 1925
- Genus Maihuenopsis Spegazzini, 1925 accepted as Maihueniopsis C.L. Spegazzini, 1925
- Genus Malacocarpus Salm-Reifferscheid-Dyck, 1850 accepted as Parodia Spegazzini, 1923
- Genus Mamillaria F. Reichenbach accepted as Mammillaria A.H. Haworth, 1812
- Genus Mamillopsis (É. Morren) Weber ex N.L. Britton & J.N. Rose, 1923 accepted as Mammillaria A.H. Haworth, 1812
- Genus Mammariella Shafer accepted as Mammillaria A.H. Haworth, 1812
- Genus Mammilaria J. Torrey & A. Gray accepted as Mammillaria A.H. Haworth, 1812
- Genus Mammillaria A.H. Haworth, 1812
- Genus Mammillivia M.H.J. van der Meer, 2019
- Genus Mammilloydia F. Buxbaum, 1951
- Genus Marenopuntia Backeberg, 1950 accepted as Opuntia (Linnaeus) P. Miller, 1754
- Genus Marginatocereus (Backeberg) Backeberg, 1942 accepted as Pachycereus (A. Berger) N.L. Britton & J.N. Rose, 1909
- Genus Mariottia A. Guiggi, 2016
- Genus Maritimocereus Akers & Buining, 1950 accepted as Cleistocactus Lemaire, 1861
- Genus Maritinocereus Akers & Buining, 1950 accepted as Cleistocactus Lemaire, 1861
- Genus Marniera Backeberg, 1950 accepted as Selenicereus (A. Berger) N.L. Britton & J.N. Rose, 1909
- Genus Marshallocereus Backeberg, 1950 accepted as Stenocereus (A. Berger) Riccobono, 1909
- Genus Matucana N.L. Britton & J.N. Rose, 1922
- Genus Matuda-pina F. Hochstätter, 2021
- Genus Maturoya P.V. Heath, 1992
- Genus Medeliocereus P.V. Heath, 1992
- Genus Mediocactus N.L. Britton & J.N. Rose, 1920 accepted as Selenicereus (A. Berger) N.L. Britton & J.N. Rose, 1909
- Genus Mediocereus A.V. Fric & K. Kreuzinger in K. Kreuzinger, 1935 accepted as Disocactus J. Lindley, 1845
- Genus Mediolobivia Backeberg, 1934 accepted as Rebutia K. Schumann, 1895
- Genus Mediorebutia A.V. Fric accepted as Rebutia K. Schumann, 1895
- Genus Megalobivia Y. Ito, 1950 accepted as Echinopsis Zuccarini, 1837
- Genus Meierara P.V. Heath, 1983
- Genus Melocactus Boehmer in Ludwig, 1760
- Genus Melocactus Link & Otto, 1827
- Genus Mesechinopsis Y. Ito, 1957 accepted as Echinopsis Zuccarini, 1837
- Genus Meyenia Backeberg, 1931 accepted as Weberbauerocereus Backeberg, 1942
- Genus Meyerocactus A.B. Doweld, 1996
- Genus Micranthocereus Backeberg, 1938
- Genus Micropilocereus P.V. Heath, 1992 accepted as Microsocereus G.D. Rowley, 1994
- Genus Micropuntia Daston, 1947 accepted as Opuntia (Linnaeus) P. Miller, 1754
- Genus Microsocereus G.D. Rowley, 1994
- Genus Microspermia A.V. Fric, 1930 accepted as Parodia Spegazzini, 1923
- Genus Mila N.L. Britton & J.N. Rose, 1922
- Genus Miqueliopuntia A.V. Fric ex F. Ritter, 1980
- Genus Mirabella F. Ritter, 1979 accepted as Cereus P. Miller, 1754
- Genus Mitrocereus (Backeberg) Backeberg, 1942 accepted as Pachycereus (A. Berger) N.L. Britton & J.N. Rose, 1909
- Genus Monvillea N.L. Britton & J.N. Rose, 1920 accepted as Praecereus F. Buxbaum, 1968
- Genus Morangaya G.D. Rowley, 1974
- Genus Moraquipa R. Baumgärtner, 2012
- Genus Morawetzia C. Backeberg, 1936 accepted as Oreocereus (A. Berger) Riccobono, 1909
- Genus Mortolopuntia A. Guiggi, 2015 accepted as Brasiliopuntia (K.M. Schumann) A. Berger, 1926
- Genus Mottramara P.V. Heath, 1992
- Genus Myrtgerocactus Moran, 1962
- Genus Myrtigymnocalycium R. Mottram, 2016
- Genus Myrtillenocereus G.D. Rowley, 1982
- Genus Myrtillocactus Console, 1897
- Genus Myrtillocalycium Meutter, 2014 accepted as Myrtigymnocalycium R. Mottram, 2016
- Genus Myrtillocereus A.V. Fric & K. Kreuzinger in K. Kreuzinger, 1935 accepted as Myrtillocactus Console, 1897
- Genus Myrtocereus R. Mottram, 1990
- Genus Napina A.V. Fric, 1928 accepted as Neolloydia N.L. Britton & J.N. Rose, 1922
- Genus Navajoa Croizat, 1943 accepted as Pediocactus N.L. Britton & J.N. Rose in N.L. Britton & A. Brown, 1913
- Genus Neoabbottia N.L. Britton & J.N. Rose, 1921 accepted as Leptocereus (A. Berger) N.L. Britton & J.N. Rose, 1909
- Genus Neobesseya N.L. Britton & Rose, 1923 accepted as Escobaria N.L. Britton & J.N. Rose, 1923
- Genus Neobinghamia Backeberg, 1950 accepted as Haageocereus Backeberg, 1933
- Genus Neobuxbaumia Backeberg, 1938
- Genus Neocardenasia Backeberg, 1949 accepted as Neoraimondia N.L. Britton & Rose, 1920
- Genus Neochilenia C. Backeberg, 1942 accepted as Eriosyce R.A. Philippi, 1872
- Genus Neodawsonia Backeberg, 1949 accepted as Cephalocereus Pfeiffer, 1838
- Genus Neodisocactus Y. Ito, 1981
- Genus Neoevansia W.T. Marshall in W.T. Marshall & Bock, 1941 accepted as Peniocereus (A. Berger) N.L. Britton & J.N. Rose, 1909
- Genus Neogomesia Castañeda, 1941 accepted as Ariocarpus Scheidweiler, 1838
- Genus Neogomezia F. Buxbaum accepted as Neogomesia Castañeda, 1941
- Genus Neogriseocereus A. Guiggi, 2013 accepted as Stenocereus (A. Berger) Riccobono, 1909
- Genus Neogymnantha Y. Ito, 1981 accepted as Rebutia K. Schumann, 1895
- Genus Neohickenia A.V. Fric, 1928 accepted as Parodia Spegazzini, 1923
- Genus Neolemaireocereus C. Backeberg, 1942 accepted as Stenocereus (A. Berger) Riccobono, 1909
- Genus Neolloydia N.L. Britton & J.N. Rose, 1922
- Genus Neolobivia Y. Ito, 1957 accepted as Echinopsis Zuccarini, 1837
- Genus Neomammillaria N.L. Britton & J.N. Rose, 1923 accepted as Mammillaria A.H. Haworth, 1812
- Genus Neonavajoa A.B. Doweld, 1999
- Genus Neoporteria N.L. Britton & J.N. Rose, 1922 accepted as Eriosyce R.A. Philippi, 1872
- Genus Neoporteria C. Backeberg, 1935 accepted as Eriosyce R.A. Philippi, 1872
- Genus Neoraimondia N.L. Britton & Rose, 1920
- Genus Neotanahashia Y. Ito, 1957 accepted as Eriosyce R.A. Philippi, 1872
- Genus Neowerdermannia A.V. Fric, 1930
- Genus Nichelia A.A. Bullock, 1938 accepted as Eriosyce R.A. Philippi, 1872
- Genus Nigellicereus (P.V. Heath) P.V. Heath, 1998 accepted as Stenocereus (A. Berger) Riccobono, 1909
- Genus Nogginsia M.H.J. van der Meer, 2019
- Genus Nopalea Salm-Dyck, 1850 accepted as Opuntia (Linnaeus) P. Miller, 1754
- Genus Nopalxalis F. Süpplie, 1988
- Genus Nopalxochia N.L. Britton & J.N. Rose, 1923 accepted as Disocactus J. Lindley, 1845
- Genus Normanbokea Kladiwa & F. Buxbaum in Krainz, 1969 accepted as Turbinicarpus F. Buxbaum & Backeberg, 1937
- Genus Nothorhipsalis A.B. Doweld, 2001
- Genus Notocactus (K.M. Schumann) A.V. Fric, 1928 accepted as Parodia Spegazzini, 1923
- Genus Notolobivia P.V. Heath, 1992
- Genus Nyctocephalocereus R. Mottram, 1990
- Genus Nyctocereus N.L. Britton & J.N. Rose, 1909 accepted as Peniocereus (A. Berger) N.L. Britton & J.N. Rose, 1909
- Genus Obregonia A.V. Fric, 1925
- Genus Oehmea Buxbaum, 1951 accepted as Mammillaria A.H. Haworth, 1812
- Genus Ophiorhipsalis (K. Schumann) A.B. Doweld, 2001
- Genus Opulea M.H.J. van der Meer, 2019
- Genus Opuntara M.H.J. van der Meer, 2018
- Genus Opuntia (Linnaeus) P. Miller, 1754
- Genus Opuntiopsis Knebel accepted as Schlumbergera Lemaire, 1858
- Genus Orensia M.H.J. van der Meer, 2023
- Genus Oreocana P.V. Heath, 1992
- Genus Oreocereus (A. Berger) Riccobono, 1909
- Genus Oreokersia W. Hans, H. Kellner & A. Neumann, 2012
- Genus Oreonopsis G.D. Rowley, 1994
- Genus Oreotrichocereus P.V. Heath, 1992
- Genus Oroya N.L. Britton & J.N. Rose, 1922
- Genus Ortegocactus E.J. Alexander, 1961
- Genus Ortegopuntia N. Tóth, 2012
- Genus Pachebergia S. Arias & T. Terrazas, 2008
- Genus Pacherocactus G.D. Rowley, 1982
- Genus Pachgerocereus Moran, 1962
- Genus Pachycereus (A. Berger) N.L. Britton & J.N. Rose, 1909
- Genus Papyrocactus A.B. Doweld, 2021 accepted as Sclerocactus N.L. Britton & Rose, 1922
- Genus Parodia Spegazzini, 1923
- Genus Parrycactus A.B. Doweld, 2000
- Genus Parviopuntia J. Soulaire & J. Marnier-Lapostolle, 1956 accepted as Opuntia (Linnaeus) P. Miller, 1754
- Genus Patrocereus M.H.J. van der Meer, 2021
- Genus Pediocactus N.L. Britton & J.N. Rose in N.L. Britton & A. Brown, 1913
- Genus Peirescia J.G. Zuccarini, 1838 accepted as Pereskia P. Miller, 1754
- Genus Peireskia E.G. von Steudel, 1841 accepted as Pereskia P. Miller, 1754
- Genus Peireskiopsis Vaupel accepted as Pereskiopsis N.L. Britton & Rose, 1907
- Genus Pelecyphora Ehrenberg, 1843
- Genus Peniocereus (A. Berger) N.L. Britton & J.N. Rose, 1909
- Genus Perenbergeria M.H.J. van der Meer, 2022
- Genus Perescia A.C. Lemaire, 1838 accepted as Pereskia P. Miller, 1754
- Genus Pereskia P. Miller, 1754
- Genus Pereskiopsis N.L. Britton & Rose, 1907
- Genus Peronocactus A.B. Doweld, 1999
- Genus Perucactus G. Pino Infante & L.E.A. Alomía Collazos in Pino Infante et al., 2023
- Genus Peruviopuntia A. Guiggi, 2011 accepted as Austrocylindropuntia Backeberg, 1938
- Genus Peruvocereus Akers, 1947 accepted as Haageocereus Backeberg, 1933
- Genus Petersenara P.V. Heath, 1992
- Genus Peyotl F. Hernández, 1790
- Genus Pfeiffera Salm-Dyck, 1845 accepted as Lepismium Pfeiffer, 1835
- Genus Phellosperma N.L. Britton & Rose, 1923 accepted as Mammillaria A.H. Haworth, 1812
- Genus Philippicereus Backeberg, 1942 accepted as Eulychnia R.A. Philippi, 1860
- Genus Phyllarthus Necker ex Gomez dela Maza in Gomez dela Maza & Roigy Mesa, 1914 accepted as Opuntia (Linnaeus) P. Miller, 1754
- Genus Phyllocactus Link, 1831 accepted as Epiphyllum A.H. Haworth, 1812
- Genus Phyllocereus Miquel, 1839 accepted as Epiphyllum A.H. Haworth, 1812
- Genus Phyllocereus Knebel, 1938
- Genus Phyllocereus A. Worsley, 1931
- Genus Phylloselenicereus C. Knebel, 1947
- Genus Pierrebraunia E. Esteves Pereira, 1997
- Genus Pilocanthus L.D. Benson & Backeberg, 1957 accepted as Pediocactus N.L. Britton & J.N. Rose in N.L. Britton & A. Brown, 1913
- Genus Pilocereus Lemaire, 1839 accepted as Cephalocereus Pfeiffer, 1838
- Genus Pilocereus K.M. Schumann, 1894 accepted as Pilosocereus R.S. Byles & G.D. Rowley, 1957
- Genus Pilocopiapoa Ritter, 1961 accepted as Copiapoa N.L. Britton & J.N. Rose, 1922
- Genus Pilodisocactus G.D. Rowley, 2014
- Genus Pilopsis Y. Ito, 1950 accepted as Echinopsis Zuccarini, 1837
- Genus Pilosocereus R.S. Byles & G.D. Rowley, 1957
- Genus Piptanthocereus (A. Berger) Riccobono, 1909 accepted as Cereus P. Miller, 1754
- Genus Platyopuntia K. Kreuzinger, 1935
- Genus Plutonopuntia P.V. Heath, 1999 accepted as Opuntia (Linnaeus) P. Miller, 1754
- Genus Polascontria Y. Cruz & S. Vázquez, 2017
- Genus Polaskia Backeberg, 1949
- Genus Porfiria Boedeker, 1926 accepted as Mammillaria A.H. Haworth, 1812
- Genus Praecereus F. Buxbaum, 1968
- Genus Praepilosocereus A. Guiggi, 2010
- Genus Pragoaureilobivia A.V. Fric ex K. Kreuzinger, 1935 accepted as Prago-aureilobivia A.V. Fric ex K. Kreuzinger, 1935
- Genus Prago-aureilobivia A.V. Fric ex K. Kreuzinger, 1935
- Genus Pragochamaecereus A.V. Fric ex K. Kreuzinger, 1935 accepted as Prago-chamaecereus A.V. Fric ex K. Kreuzinger, 1935
- Genus Prago-chamaecereus A.V. Fric ex K. Kreuzinger, 1935
- Genus Pragolobivia A.V. Fric ex K. Kreuzinger, 1935 accepted as Prago-lobivia A.V. Fric ex K. Kreuzinger, 1935
- Genus Prago-lobivia A.V. Fric ex K. Kreuzinger, 1935
- Genus Pragonotocactus A.V. Fric ex K. Kreuzinger, 1935 accepted as Prago-notocactus A.V. Fric ex K. Kreuzinger, 1935
- Genus Prago-notocactus A.V. Fric ex K. Kreuzinger, 1935
- Genus Prillea M.H.J. van der Meer, 2019 accepted as Praecereus F. Buxbaum, 1968
- Genus Pseudoacanthocereus F. Ritter, 1979
- Genus Pseudocereus P.V. Heath, 1992
- Genus Pseudocladodia P.V. Heath, 1992
- Genus Pseudoechinocereus Buining accepted as Cleistocactus Lemaire, 1861
- Genus Pseudoespostoa Backeberg, 1933 accepted as Espostoa N.L. Britton & J.N. Rose, 1920
- Genus Pseudolobivia (Backeberg) Backeberg, 1942 accepted as Echinopsis Zuccarini, 1837
- Genus Pseudomaihueniopsis A. Guiggi, 2013 accepted as Tephrocactus Lemaire, 1868
- Genus Pseudomammillaria F. Buxbaum, 1951 accepted as Mammillaria A.H. Haworth, 1812
- Genus Pseudomitrocereus H. Bravo-Hollis & F. Buxbaum, 1961 accepted as Neobuxbaumia Backeberg, 1938
- Genus Pseudonopalxochia C. Backeberg, 1958 accepted as Disocactus J. Lindley, 1845
- Genus Pseudopilocereus F. Buxbaum, 1968 accepted as Pilosocereus R.S. Byles & G.D. Rowley, 1957
- Genus Pseudorhipsalis N.L. Britton & Rose, 1923
- Genus Pseudosolisia Y. Ito, 1981 accepted as Neolloydia N.L. Britton & J.N. Rose, 1922
- Genus Pseudotephrocactus A.V. Fric ex K. Kreuzinger, 1935 accepted as Opuntia (Linnaeus) P. Miller, 1754
- Genus Pseudozygocactus Backeberg, 1938 accepted as Hatiora N.L. Britton & J.N. Rose in L.H. Bailey, 1915
- Genus Pterocactus K. Schumann, 1897
- Genus Pterocereus MacDougall & Miranda, 1954 accepted as Pachycereus (A. Berger) N.L. Britton & J.N. Rose, 1909
- Genus Puebloa A.B. Doweld, 1999
- Genus Puna R. Kiesling, 1982 accepted as Maihueniopsis C.L. Spegazzini, 1925
- Genus Punotia D.R. Hunt, 2011
- Genus Pygmaeocereus H. Johnson & Backeberg, 1957 accepted as Haageocereus Backeberg, 1933
- Genus Pyrrhocactus A. Berger, 1929 accepted as Eriosyce R.A. Philippi, 1872
- Genus Quiabentia N.L. Britton & Rose, 1923
- Genus Rapicactus Buxbaum & Oehme ex Buxbaum, 1942 accepted as Turbinicarpus F. Buxbaum & Backeberg, 1937
- Genus Rapicarpus M.H.J. van der Meer, 2019
- Genus Rathbunia N.L. Britton & J.N. Rose, 1909 accepted as Stenocereus (A. Berger) Riccobono, 1909
- Genus Rathbunillocactus R. Mottram, 1990
- Genus Rauhocereus Backeberg, 1957
- Genus Raustoa M.H.J. van der Meer, 2019
- Genus Rebulobivia A.V. Fric ex K. Kreuzinger, 1935 accepted as Echinopsis Zuccarini, 1837
- Genus Rebutia K. Schumann, 1895
- Genus Reicheocactus Backeberg, 1942 accepted as Rebutia K. Schumann, 1895
- Genus Rettigara P.V. Heath, 1992
- Genus Rhipsalidopsis N.L. Britton & J.N. Rose, 1923 accepted as Hatiora N.L. Britton & J.N. Rose in L.H. Bailey, 1915
- Genus Rhipsaliphyllum R. Mottram, 2014
- Genus Rhipsalis J. Gaertner, 1788
- Genus Rhipsaphyllopsis Werdermann, 1939
- Genus Rhipsapyllopsis Werdermann, 1939
- Genus Rhipsatiora T. Urano, 2022
- Genus Rhodenbergeria M.H.J. van der Meer, 2022
- Genus Rhodeskia M.H.J. van der Meer, 2022
- Genus Rhodocactus (A. Berger) F.M. Knuth, 1930 accepted as Pereskia P. Miller, 1754
- Genus Rimacactus R. Mottram, 2001 accepted as Eriosyce R.A. Philippi, 1872
- Genus Rittellicereus P.V. Heath, 1998 accepted as Stenocereus (A. Berger) Riccobono, 1909
- Genus Ritterocactus A.B. Doweld, 1999
- Genus Ritterocereus C. Backeberg, 1941 accepted as Stenocereus (A. Berger) Riccobono, 1909
- Genus Rodentiophila F. Ritter & Y. Ito in Y. Ito, 1981 accepted as Eriosyce R.A. Philippi, 1872
- Genus Rooksbya (Backeberg) Backeberg, 1958 accepted as Neobuxbaumia Backeberg, 1938
- Genus Roseia Fric, 1925 accepted as Coryphantha (Engelmann) Lemaire, 1868
- Genus Roseocactus A. Berger, 1925 accepted as Ariocarpus Scheidweiler, 1838
- Genus Roseocereus Backeberg, 1938 accepted as Harrisia N.L. Britton, 1909
- Genus Rowleyara P.V. Heath, 1992
- Genus Salmiopuntia A.V. Frič ex K. Kreuzinger, 1935 accepted as Salmonopuntia P.V. Heath, 1999
- Genus Salmiopuntia A.V. Frič ex A. Guiggi, 2011 accepted as Salmonopuntia P.V. Heath, 1999
- Genus Salmonopuntia P.V. Heath, 1999
- Genus Salpingolobivia Y. Ito, 1957 accepted as Echinopsis Zuccarini, 1837
- Genus Salpingolobiviopsis Y. Itô, 1967
- Genus Samaipaticereus H.M. Cárdenas, 1952
- Genus Schickara A. Mordhorst, 2011
- Genus Schlumbergera Lemaire, 1858
- Genus Schlumbergeranthus A.B. Doweld, 2001
- Genus Schlumbergopsis P.V. Heath, 1992 accepted as Schlumbergera Lemaire, 1858
- Genus Sclerinocereus G.D. Rowley, 2006
- Genus Sclerocactus N.L. Britton & Rose, 1922
- Genus Scoparebutia A.V. Fric & K.G. Kreuzinger ex Buining accepted as Echinopsis Zuccarini, 1837
- Genus Seleliocereus A. Guillaumin, 1937 accepted as Disoselenicereus E. Meier, 1990
- Genus Selenara M.H.J. van der Meer, 2018
- Genus Selenbergera M.H.J. van der Meer, 2018
- Genus Seleniaporus G.D. Rowley, 1972 accepted as Disoselenicereus E. Meier, 1990
- Genus Selenicereus (A. Berger) N.L. Britton & J.N. Rose, 1909
- Genus Seleniopsis G.D. Rowley, 2004
- Genus Seleniphyllum G.D. Rowley in C. Backeberg, 1962
- Genus Seleniporocactus G.D. Rowley, 1982
- Genus Selenirisia G.D. Rowley, 1982
- Genus Selenocha G.D. Rowley, 1982 accepted as Selenochia G.D. Rowley, 1982
- Genus Selenochia G.D. Rowley, 1982 accepted as Disoselenicereus E. Meier, 1990
- Genus Selivia M.H.J. van der Meer, 2018
- Genus Semponium D. Michael in Lea & Michael, 2020
- Genus Sericocactus Y. Ito, 1957 accepted as Parodia Spegazzini, 1923
- Genus Serrulatocereus A. Guiggi, 2018
- Genus Seticereus Backeberg, 1937 accepted as Cleistocactus Lemaire, 1861
- Genus Seticleistocactus Backeberg, 1963 accepted as Cleistocactus Lemaire, 1861
- Genus Setidenmoza C. Backeberg, 1959 accepted as Borzimoza G.D. Rowley, 1980
- Genus Setiechinopsis (Backeberg) T. de Haas, 1940 accepted as Echinopsis Zuccarini, 1837
- Genus Setirebutia A.V. Fric ex K. Kreuzinger, 1935 accepted as Rebutia K. Schumann, 1895
- Genus Siccobaccatus P.J. Braun & E. Esteves Pereira, 1990 accepted as Micranthocereus Backeberg, 1938
- Genus Soehrenfuria Y. Ito, 1981
- Genus Soehrenlobivia Y. Ito, 1981
- Genus Soehrenopsis M. Ficzere & F.W. Fabian, 2015
- Genus Soehrensia Backeberg, 1938 accepted as Echinopsis Zuccarini, 1837
- Genus Solisia N.L. Britton & Rose, 1923 accepted as Mammillaria A.H. Haworth, 1812
- Genus Spegazzinia Backeberg, 1934 accepted as Rebutia K. Schumann, 1895
- Genus Sphaeropuntia A. Guiggi, 2012 accepted as Cumulopuntia F. Ritter, 1980
- Genus Spinicalycium A.V. Fric, 1931 accepted as Acanthocalycium Backeberg in Backeberg & F.M. Knuth, 1936
- Genus Stenillocactus P.V. Heath, 1996
- Genus Stenocactus (K.M. Schumann) A. Berger, 1929
- Genus Stenocereus (A. Berger) Riccobono, 1909
- Genus Stenolatocereus M.H.J. van der Meer, 2019
- Genus Stenomyrtillus G.D. Rowley, 1980
- Genus Stephanocereus A. Berger, 1926
- Genus Stetsonia N.L. Britton & Rose, 1920
- Genus Stromatocactus W.F. von Karwinsky von Karwin ex C.F. Förster, 1885 accepted as Ariocarpus Scheidweiler, 1838
- Genus Strombocactus N.L. Britton & Rose, 1922
- Genus Strophocactus N.L. Britton & Rose, 1913 accepted as Selenicereus (A. Berger) N.L. Britton & J.N. Rose, 1909
- Genus Strophocereus A.V. Fric & K. Kreuzinger in K. Kreuzinger, 1935 accepted as Selenicereus (A. Berger) N.L. Britton & J.N. Rose, 1909
- Genus Submatucana Backeberg, 1959 accepted as Oreocereus (A. Berger) Riccobono, 1909
- Genus Subpilocereus Backeberg, 1938 accepted as Cereus P. Miller, 1754
- Genus Subulatopuntia A.V. Fric & E. Schelle ex K. Kreuzinger, 1935 accepted as Opuntia (Linnaeus) P. Miller, 1754
- Genus Sulcocalycium P.V. Heath, 1992
- Genus Sulcorebutia Backeberg, 1951 accepted as Rebutia K. Schumann, 1895
- Genus Swartzara M.H.J. van der Meer, 2019
- Genus Tacinga N.L. Britton & Rose, 1919
- Genus Tephrocactus Lemaire, 1868
- Genus Thechinocactus P. Berresford, 2014
- Genus Thelobergia H. Hirao, 1979
- Genus Thelocactus (K.M. Schumann) N.L. Britton & Rose, 1922
- Genus Thelocephala Y. Ito, 1957 accepted as Eriosyce R.A. Philippi, 1872
- Genus Thelomastus A.V. Fric & K. Kreuzinger in K. Kreuzinger, 1935 accepted as Thelocactus (K.M. Schumann) N.L. Britton & Rose, 1922
- Genus Thrixanthocereus Backeberg, 1937 accepted as Espostoa N.L. Britton & J.N. Rose, 1920
- Genus Timmermansara P.V. Heath, 1992
- Genus Torreycactus A.B. Doweld, 1998
- Genus Toumeya N.L. Britton & Rose, 1922 accepted as Sclerocactus N.L. Britton & Rose, 1922
- Genus Trichinovia M.H.J. van der Meer, 2019
- Genus Trichocereus (A. Berger) Riccobono, 1909 accepted as Echinopsis Zuccarini, 1837
- Genus Trichoechinopsis Backeberg, 1959
- Genus Trichoëchinopsis Backeberg, 1959 represented as Trichoechinopsis Backeberg, 1959
- Genus Tricholobiviopsis P.V. Heath, 1992
- Genus Trichopsis Y. Ito, 1981
- Genus Trichopuntia A. Guiggi, 2011 accepted as Austrocylindropuntia Backeberg, 1938
- Genus Trivia M.H.J. van der Meer, 2019
- Genus Trochilocactus K.H.L. Lindinger, 1942 accepted as Disocactus J. Lindley, 1845
- Genus Tunas Lunell, 1916 accepted as Opuntia (Linnaeus) P. Miller, 1754
- Genus Tunilla D.R. Hunt & J. Iliff, 2000
- Genus Turbinicarpus F. Buxbaum & Backeberg, 1937
- Genus Uebelechinopsis G.D. Rowley, 2006
- Genus Uebelmannia A.F.H. Buining, 1967
- Genus Ursopuntia P.V. Heath, 1999 accepted as Tephrocactus Lemaire, 1868
- Genus Utahia N.L. Britton & Rose, 1922 accepted as Pediocactus N.L. Britton & J.N. Rose in N.L. Britton & A. Brown, 1913
- Genus Vatricania Backeberg, 1950 accepted as Espostoa N.L. Britton & J.N. Rose, 1920
- Genus Viridicereus A. Guiggi, 2024
- Genus Weberbauerocereus Backeberg, 1942
- Genus Weberbostoa G.D. Rowley, 1994
- Genus Weberiopuntia A.V. Fric ex K. Kreuzinger, 1935 accepted as Opuntia (Linnaeus) P. Miller, 1754
- Genus Weberocereus N.L. Britton & J.N. Rose, 1909
- Genus Weinganopsis G.D. Rowley, 1994
- Genus Weingartia Werdermann, 1937 accepted as Rebutia K. Schumann, 1895
- Genus Weinocalycium P.V. Heath, 1992
- Genus Werckleocereus N.L. Britton & Rose, 1909 accepted as Weberocereus N.L. Britton & J.N. Rose, 1909
- Genus Wessnerara A. Mordhorst, 2020
- Genus Wigginsia D.M. Porter, 1964 accepted as Parodia Spegazzini, 1923
- Genus Wilcoxia N.L. Britton & Rose, 1909 accepted as Echinocereus Engelmann in Wislizenus, 1848
- Genus Wilmattea N.L. Britton & Rose, 1920 accepted as Hylocereus (A. Berger) N.L. Britton & J.N. Rose, 1909
- Genus Winteria F. Ritter, 1962 accepted as Cleistocactus Lemaire, 1861
- Genus Winterocereus C. Backeberg, 1996 accepted as Cleistocactus Lemaire, 1861
- Genus Wittia K.M. Schumann, 1903 accepted as Disocactus J. Lindley, 1845
- Genus Wittiocactus S. Rauschert, 1982 accepted as Disocactus J. Lindley, 1845
- Genus Worsleyara P.V. Heath, 1992
- Genus Xhonneuxara M.H.J. van der Meer, 2020
- Genus Xiquexique P. Lavor, A. Calvente & L.M. Versieux in Lavor et al., 2020
- Genus Yavia R. Kiesling & J. Piltz, 2001
- Genus Yungasocereus F. Ritter, 1980
- Genus Yungastocactus G.D. Rowley, 2004
- Genus Zehntnerella N.L. Britton & Rose, 1920 accepted as Facheiroa N.L. Britton & J.N. Rose, 1920
- Genus Zygocactus K. Schumann in C.F.P. Martius, 1890 accepted as Schlumbergera Lemaire, 1858
- Genus Zygocereus A.V. Fric & K. Kreuzinger in K. Kreuzinger, 1935 accepted as Schlumbergera Lemaire, 1858
- Genus Zygophyllanthus H. Johnson, 1968
- Genus Zygophyllanthus H. Johnson ex G.D. Rowley, 1982
- Family Caryophyllaceae de Jussieu, 1789
- Family Caryophyllales (awaiting allocation)
- Family Chenopodiaceae Ventenat, 1799 accepted as Amaranthaceae de Jussieu, 1789
- Family Didiereaceae Radlkofer, 1896
- Family Dioncophyllaceae Airy Shaw, 1952
- Family Droseraceae Salisbury, 1808
- Family Drosophyllaceae Chrtek, Slavíková & Studnicka, 1989
- Family Frankeniaceae Desvaux, 1817
- Family Gisekiaceae Nakai, 1942
- Family Halophytaceae A. Soriano, 1984
- Family Hectorellaceae Philipson & Skipworth, 1961 accepted as Portulacaceae de Jussieu, 1789
- Family Kewaceae M.J.M. Christenhusz, 2014
- Family Limeaceae Shipunov ex Reveal, 2005
- Family Lophiocarpaceae Doweld & Reveal, 2008
- Family Macarthuriaceae M.J.M. Christenhusz, 2014
- Family Mesembryanthemaceae Philibert, 1801 accepted as Aizoaceae Martinov, 1820
- Family Microteaceae B. Schäferhoff & T. Borsch, 2010
- Family Molluginaceae Bartling, 1825
- Family Montiaceae Rafinesque, 1820
- Family Nepenthaceae Dumortier, 1829
- Family Nyctaginaceae de Jussieu, 1789
- Family Petiveriaceae C.A. Agardh, 1824
- Family Physenaceae Takhtajan, 1985
- Family Phytolacaceae accepted as Phytolaccaceae R. Brown, 1818
- Family Phytolaccaceae R. Brown, 1818
- Family Plumbaginaceae de Jussieu, 1789
- Family Polygonaceae de Jussieu, 1789
- Family Portulacaceae de Jussieu, 1789
- Family Reaumuriaceae Ehrenberg ex Lindley, 1830 accepted as Tamaricaceae Link, 1821
- Family Rhabdodendraceae Prance, 1968
- Family Sarcobataceae Behnke, 1997
- Family Sesuviaceae Horaninow, 1834 accepted as Aizoaceae Martinov, 1820
- Family Simmondsiaceae van Tieghem, 1900
- Family Stegnospermaceae accepted as Stegnospermataceae Nakai, 1942
- Family Stegnospermataceae Nakai, 1942
- Family Talinaceae Doweld, 2001
- Family Tamaricaceae Link, 1821
- Family Tetragoniaceae Lindley, 1836 accepted as Aizoaceae Martinov, 1820
- Order Casuarinales accepted as Fagales
- Order Celastrales
- Order Ceratophyllales
- Order Chloranthales
- Order Circaeasterales accepted as Ranunculales
- Order Cistales accepted as Malvales
- Order Colchicales accepted as Liliales
- Order Commelinales
- Order Cornales
- Order Corylales accepted as Fagales
- Order Crossosomatales
- Order Cucurbitales
- Order Cyclanthales accepted as Pandanales
- Order Cynomoriales accepted as Saxifragales
- Order Cyperales accepted as Poales
- Order Daphniphyllales accepted as Saxifragales
- Order Desfontainiales accepted as Bruniales
- Order Diapensiales accepted as Ericales
- Order Didymelales accepted as Buxales
- Order Dilleniales
- Order Dioscoreales
- Order Dipsacales
- Order Ebenales accepted as Ericales
- Order Ericales
- Order Eriocaulales accepted as Poales
- Order Escalloniales
- Order Eucommiales accepted as Garryales
- Order Euphorbiales accepted as Malpighiales
- Order Fabales
- Order Fagales
- Order Francoales accepted as Geraniales
- Order Garryales
- Order Gentianales
- Order Geraniales
- Order Glaucidiales accepted as Ranunculales
- Order Griseliniales accepted as Apiales
- Order Gunnerales
- Order Haemodorales accepted as Commelinales
- Order Haloragales accepted as Saxifragales
- Order Hamamelidales accepted as Saxifragales
- Order Helobiales accepted as Alismatales
- Order Helwingiales accepted as Aquifoliales
- Order Huerteales
- Order Hydatellales accepted as Nymphaeales
- Order Hydrangeales accepted as Cornales
- Order Hydrastidales accepted as Ranunculales
- Order Hydrocharitales accepted as Alismatales
- Order Hydropeltidales accepted as Nymphaeales
- Order Hypericales accepted as Malpighiales
- Order Hypoxidales accepted as Asparagales
- Order Icacinales
- Order Illiciales accepted as Austrobaileyales
- Order Iridales accepted as Asparagales
- Order Juglandales accepted as Fagales
- Order Juncaginales accepted as Alismatales
- Order Juncales accepted as Poales
- Order Lamiales
- Order Laurales
- Order Lecythidales accepted as Ericales
- Order Leitneriales accepted as Sapindales
- Order Liliales
- Order Linales accepted as Malpighiales
- Order Magnoliales
- Order Magnoliopsida (awaiting allocation)
- Order Malpighiales
- Order Malvales
- Order Melanthiales accepted as Liliales
- Order Metteniusales
- Order Myricales accepted as Fagales
- Order Myrsinales accepted as Ericales
- Order Myrtales
- Order Najadales accepted as Alismatales
- Order Nepenthales accepted as Caryophyllales
- Order Nymphaeales
- Order Ochnales accepted as Malpighiales
- Order Oleales accepted as Lamiales
- Order Orchidales accepted as Asparagales
- Order Oxalidales
- Order Pandanales
- Order Papaverales accepted as Ranunculales
- Order Paracryphiales
- Order Parnassiales accepted as Celastrales
- Order Petrosaviales
- Order Picramniales
- Order Piperales
- Order Plantaginales accepted as Lamiales
- Order Plumbaginales accepted as Caryophyllales
- Order Poales
- Order Podostemales accepted as Malpighiales
- Order Polygalales accepted as Fabales
- Order Polygonales accepted as Caryophyllales
- Order Primulales accepted as Ericales
- Order Proteales
- Order Rafflesiales accepted as Malpighiales
- Order Ranunculales
- Order Restionales accepted as Poales
- Order Rhamnales accepted as Rosales
- Order Rhizophorales accepted as Malpighiales
- Order Roridulales accepted as Ericales
- Order Rosales
- Order Rubiales accepted as Gentianales
- Order Rutales accepted as Sapindales
- Order Sabiales accepted as Proteales
- Order Salicales accepted as Malpighiales
- Order Santalales
- Order Sapindales
- Order Sarbaicarpales †
- Order Saxifragales
- Order Scrophulariales accepted as Lamiales
- Order Smilacales accepted as Liliales
- Order Solanales
- Order Stemonales accepted as Pandanales
- Order Tamaricales accepted as Caryophyllales
- Order Tecophilaeales accepted as Asparagales
- Order Theales accepted as Ericales
- Order Thymelaeales accepted as Malvales
- Order Toricelliales accepted as Cornales
- Order Trilliales accepted as Liliales
- Order Triuridales accepted as Pandanales
- Order Trochodendrales
- Order Typhales accepted as Poales
- Order Urticales accepted as Rosales
- Order Vahliales
- Order Viburnales accepted as Dipsacales
- Order Violales accepted as Malpighiales
- Order Vitales
- Order Xanthorrhoeales accepted as Asparagales
- Order Zingiberales
- Order Zygophyllales
- Family Archaefructaceae G. Sun, Q. Ji, D.L. Dilcher, S. Zheng, K.C. Nixon & X. Wang, 2002 †
- Family Sinoherbaceae Z.-J. Liu & X. Wang in Liu et al., 2021 †
- Genus Aachenosaurus Smets, 1887 † accepted as Aachenoxylon M. Hovelacque, 1889 †
- Genus Aachenoxylon M. Hovelacque, 1889 †
- Genus Antholithes A.T. Brongniart, 1822 †
- Genus Archaebuda L.-J. Chen & X. Wang, 2022 †
- Genus Ascarinophyllum J. Čepičková & J. Kvaček, 2022 †
- Genus Atrichodendron Gagnepain, 1950
- Genus Barykovia M.G. Moiseeva, 2012 †
- Genus Bergacarpon J. Marmi, B. Gomez, S. Villalba-Breva & C. Martín-Closas, 2012 †
- Genus Bilitalium F. Buchanan-Hamilton, 1807
- Genus Caliciflora E.M. Friis, K.R. Pedersen & P.R. Crane, 2016 †
- Genus Carpestella M. von Balthazar, K.R. Pedersen, P.R. Crane & E.M. Friis, 2008 †
- Genus Catanthus E.M. Friis, P.R. Crane & K.R. Pedersen, 2020 †
- Genus Cavilignum C. Siegert & E.J. Hermsen, 2020 †
- Genus Chainandra G.O. Poinar Jr. & K.L. Chambers, 2020 †
- Genus Covidifructus Z. Heřmanová, J. Čepičková, J. Kvaček, M. von Balthazar & J. Schönenberger, 2022 †
- Genus Cratolirion C. Coifard, N. Kardjilov & M.E.C. Bernardes-de-Oliveira in Coifard et al., 2019 †
- Genus Culmites A.T. Brongniart, 1822 †
- Genus Cyathitepala G.O. Poinar Jr. & K.L. Chambers, 2020 †
- Genus Dilcherifructus X. Wang, 2021 †
- Genus Dillhoffia S.R. Manchester & K.B. Pigg, 2008 †
- Genus Dinganthus X.-D. Liu, J.B. Diez, Y. Fan, Z.-J. Liu & X. Wang, 2020 †
- Genus Elasmostemon E.M. Friis, P.R. Crane, K.R. Pedersen, M.M. Mendes & J. Kvaček, 2022 †
- Genus Endressistemon E.M. Friis, P.R. Crane, K.R. Pedersen, M.M. Mendes & J. Kvaček, 2022 †
- Genus Exogenites A.T. Brongniart, 1822 †
- Genus Fairlingtonia N.A. Jud, 2015 †
- Genus Florigerminis D.-F. Cui, Y. Hou, P. Yin & X. Wang, 2022 †
- Genus Fouldenia J.M. Bannister, D.E. Lee & J.I. Raine 2005 †
- Genus Friisifructus K.K. Tang, S.Y. Smith & B.A. Atkinson, 2023 †
- Genus Gansufructus B. Du in Du et al., 2021 †
- Genus Gansupeltata G.-T. Wu, W.-X. Ren, L. Han, H.-S. Wang, Y.-F. Hua & B.-N. Sun, 2022 †
- Genus Harmsia E. McIver & J.F. Basinger, 1993 † accepted as Mciveriella A.B. Doweld, 2016 †
- Genus Herbifolia A. Frolov & I. Enushchenko, 2022 †
- Genus Honeytheca I.B. Huegele & S.R. Manchester, 2022 †
- Genus Ibericarpus E.M. Friis, P.R. Crane, K.R. Pedersen, M.M. Mendes & J. Kvaček, 2022 †
- Genus Kachaikenia R. Cunéo & M.A. Gandolfo, 2005 †
- Genus Kenilanthus E.M. Friis, K.R. Pedersen & P.R. Crane, 2016 †
- Genus Lingyuananthus X. Wang, 2022 †
- Genus Mciveriella A.B. Doweld, 2016 †
- Genus Menatanthus D. Uhl, K.N. Paudayal & H. El Atfy in Uhl et al., 2020 †
- Genus Nicolia Unger in Endlicher, 1842 †
- Genus Nitaspermum E.M. Friis, P.R. Crane & K.R. Pedersen, 2018 †
- Genus Othniophyton Manchester, Judd & Correa-Narvaez, 2024 †
- Genus Paisia E.M. Friis, M.M. Mendes & K.R. Pedersen, 2018 †
- Genus Phantophlebia G.O. Poinar, Jr. & K.L. Chambers, 2020 †
- Genus Sherwinoxylon A. Boura & G. Saulnier in Boura et al., 2019 †
- Genus Singpuria D. Ramteke, S.R. Manchester & V.D. Nagrale in Ramteke et al., 2020 †
- Genus Strombothelya G.O. Poinar, Jr. & K.L. Chambers, 2019 †
- Genus Tanispermum E.M. Friis, P.R. Crane & K.R. Pedersen, 2018 †
- Genus Thorphyllum R. Cunéo & M.A. Gandolfo, 2005 †
- Genus Tolmania N.L. Edmonds, R.A. Stockey & G.W. Rothwell, 2022 †
- Genus Ubiquitoxylon E.A. Wheeler in Wheeler et al., 2019 †
- Genus Valvidistemon E.M. Friis, P.R. Crane, K.R. Pedersen, M.M. Mendes & J. Kvaček, 2022 †
- Genus Wingia H. Wang & D.L. Dilcher, 2018 †
- Genus Wireroadia X. Zhang, Y. Wang, D.L. Dilcher & S.R. Manchester, 2020 †
- Genus Zlatkovia G.W. Rothwell & R.A. Stockey, 2022 †
- Genus Comoxia Jud, Bradley, Zahnd, Rothwell & Stockey, 2024 †
- Genus Compitoxylon Gentis, De Franceschi & Boura, 2023 †
- Genus Felinanthus Heřmanová, Von Balthazar, Kvaček & Schönenberger, 2024 †
- Genus Nothophylica Beurel, Bachelier, Schmidt & Sadowski, 2024 †
- Genus Pteroheterochrosperma M.A. Smith, D.E. Greenwalt & S.R. Manchester, 2023 †
- Genus Quadrasubulaflora M.A. Smith, D.E. Greenwalt & S.R. Manchester, 2023 †
- Genus Racheliflora E.M. Friis, P.R. Crane & K.R. Pedersen, 2023 †
- Genus Tortorellixylon C.F. Rombola, R.R. Pujana, D.P. Ruiz & E.S. Bellosi, 2023 †
- Genus Xilinia X. Wang, J.B. Diez, M. Pole & M. García-Ávila, 2023 †
- Superclass Gymnospermae
- Genus Alasemenia Wang, Yang, Liu, Zhou, Xu, Qin & Huang, 2024 †
- Genus Bevhalstia C.R. Hill, 1996 †
- Genus Carpolithus E.T. Artis, 1825 †
- Genus Combina A.A. Santos & X. Wang, 2022 †
- Genus Juraherba G. Han, Z. Liu, X. Liu, L. Mao, F.M.B. Jacques & X. Wang, 2016 †
- Genus Muricosperma L.J. Seyfullah & J. Hilton in Seyfullah et al., 2010 †
- Genus Nothodichocarpum G. Han, Z. Liu & X. Wang, 2017 †
- Genus Problematospermum A.I. Turutanova-Ketova in J.A. Orlov, 1963 ex Krassilov, 1973 †
- Genus Qingganninginfructus X. Wang & Sun in Han et al., 2023 †
- Genus Renbernia E.M. Friis, P.R. Crane & K.R. Pedersen, 2022 †
- Genus Shaolinia Wang & Chen, 2024 †
- Genus Xenofructus Fu, Sun, Zheng & Wang, 2024 †
- Genus Xingxueanthus X. Wang & S. Wang, 2010 †
- Genus Yiduxylon D.M. Wang & L. Liu, 2015 †
- Genus Yuhania Z.-J. Liu & X. Wang, 2016 †
- Class Progymnospermopsida †
- Class Pteridophyta/Pteridospermophyta (unclassified foliage) †
- Class Rhyniopsida †
- Class Trimerophytopsida †
- Class Zosterophyllopsida †
- Order Stenokoleales †
- Genus Ahnetia A.-L. Decombeix & J. Galtier, 2017 †
- Genus Aysenoxylon R.R. Pujana, J.E. Bostelmann, R.A. Ugalde, M.P. Riquelme & T. Torres, 2023 †
- Genus Dameria A.-L. Decombeix, B. Meyer-Berthaud, J. Galtier, J.A. Talent & R. Mawson, 2011 †
- Genus Dibracophyton S.-G. Hao, J.-Z. Xue, X. Zhu & D.-M. Wang, 2012 †
- Genus Douaphyton H.-H. Xu, Y. Wang, P. Tang & Y. Wang, 2017 †
- Genus Endogenites A.T. Brongniart, 1822 †
- Genus Flabellopteris R.W. Gess & C. Prestianni, 2021 †
- Genus Franhueberia L.A. Hoffman & A.M.F. Tomescu, 2013 †
- Genus Jowingera M.A. Bickner & A.M.F. Tomescu, 2019 †
- Genus Kenrickia S. Toledo & A.M.F. Tomescu in Toledo et al., 2021 †
- Genus Leptocentroxyla M.A. Bickner & A.M.F. Tomescu, 2019 †
- Genus Macrotaeniopteris W.P. Schimper, 1869 †
- Genus Mosacaulis R.W.J.M. van der Ham & J.H.A. van Konijnenburg-van Cittert in van der Ham et al., 2011 †
- Genus Nebuloxyla M.A.K. Lalica & A.M.F. Tomescu, 2023 †
- Genus Ninsaria A.-L. Decombeix, J. Galtier, S. McLoughlin & B. Meyer-Berthaud in Decombeix et al., 2019 †
- Genus Oleandridium W.P. Schimper, 1869 †
- Genus Perplexa K.C. Pfeiler & A.M.F. Tomescu, 2023 †
- Genus Petrosjania S.M. Snigirevsky & A.P. Lyubarova, 2023 †
- Genus Planatophyton P. Gerrienne, B. Meyer-Berthaud, N. Yang, P. Steemans & C.-S. Li, 2014 †
- Genus Poacites Schlotheim ex Ballenstedt, 1822 †
- Genus Sporangites J.W. Dawson, 1863 †
- Genus Stenoloboxyla M.A. Bickner & A.M.F. Tomescu, 2019 †
- Genus Taeniopteris A.T. Brongniart, 1828 †
- Genus Tainioxyla M.A. Bickner & A.M.F. Tomescu, 2019 †
- Genus Thursophyton A.G. Nathorst, 1914-1915 †
- Genus Thursophyton A.G. Nathorst ex E.A.N. Arber, 1921 † accepted as Thursophyton A.G. Nathorst, 1914-1915 †
- Genus Tichavekia J. Pšenička, J. Sakala & P. Kraft in Kraft et al., 2019 †
- Genus Tregiovia G. Forte & E. Kustatscher, 2023 †
- Genus Wilhowia P.G. Gensel, 2022 †
- Genus Xadzigacalix A.A. Klymiuk, G.W. Rothwell & R.A. Stockey, 2022 †
- Genus Xinhangia J.-N. Yang & D.-M. Wang, 2022 †
- Genus Yabeiella S. Ôishi, 1931 †
- Phylum Vendophyta † accepted as Algae incertae sedis
- Class Nematophyceae † accepted as Nematophyta †
- Kingdom Protista accepted as Protozoa
- Kingdom Protozoa
- Kingdom Viruses
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