Echinocactus lophothele var. longispinus Blume variety synonym

Thelocactus rinconensis subsp. phymatothelos (Poselg. ex Rümpler) C.E.Glass subspecies synonym

Echinocactus tuberosus Salm-Dyck ex C.F.Först. species synonym

Echinocactus phymatothelos Poselg. ex Rümpler species synonym

Cactus bicolor Terán & Berland. species heterotypic synonym

Thelocactus rinconensis subsp. nidulans (Quehl) C.E.Glass subspecies synonym

Echinocactus hamatus Muehlenpf. species synonym

Echinocactus macdowellii Rebut ex Quehl species synonym

Echinocactus macdowellii Orcutt species synonym

Thelocactus bicolor var. pottsii Britton & Rose variety synonym

Thelocactus macdowellii (Rebut ex Quehl) W.T.Marshall species accepted

Cereus tuberosus Pfeiff. species synonym

Thelocactus tulensis subsp. matudae (Sánchez-Mej. & A.B.Lau) E.F.Anderson subspecies synonym

Echinocactus leucacanthus Zucc. species homotypic synonym

Thelocactus bicolor var. bicolor variety synonym

Thelocactus tulensis subsp. tulensis subspecies synonym

Thelocactus tepelmemensis T.J.Davis, H.M.Hern., G.D.Starr & Gómez-Hin. species accepted

Thelocactus lophothele subsp. nidulans (Quehl) Matusz. subspecies synonym

Thelocactus lophothele subsp. hintonii (Lüthy) Matusz. subspecies synonym

Thelocactus setispinus var. muehlenpfordtii (J.M.Coult.) Pilbeam variety synonym

Echinocactus leucanthus Zucc. species homotypic synonym

Thelocactus setispinus var. setaceus (Engelm.) Pilbeam variety synonym

Thelocactus lophothele subsp. rinconensis (Poselg.) Matusz. subspecies synonym

Thelocactus lophothele subsp. freudenbergeri (R.Haas) Matusz. subspecies synonym

Thelocactus lophothele subsp. palomaensis (Pavlícek & Zatloukal) Matusz. subspecies synonym

Echinocactus leucanthus Zucc. ex Pfeiff. species synonym

Thelocactus macdowellii (Rebut ex Quehl) Glass species synonym

Echinocactus tuberosus var. subporrectus C.F.Först. variety synonym

Echinocactus setispinus var. martelii Schelle variety synonym

Thelocactus setispinus (Engelm.) E.F.Anderson species accepted

Echinocactus setispinus var. hamatus (Muehlenpf.) Engelm. variety synonym

Ferocactus setispinus (Engelm.) L.D.Benson species synonym

Echinocactus setispinus Engelm. & A.Gray species synonym

Thelocactus bicolor (Galeotti ex Pfeiff.) Britton & Rose species accepted

Echinocactus phymatothelos Poselg. species synonym

Echinocactus nodosus (Linke) Hemsl. species synonym

Echinocactus nidulans Quehl species synonym

Echinocactus muehlenpfordtii J.H.Fennell species synonym

Echinocactus macdowellii Rebut species synonym

Echinocactus lophothele Salm-Dyck species synonym

Echinocactus leucacanthus var. crassior Salm-Dyck variety synonym

Echinocactus labouretianus Cels species homotypic synonym

Echinocactus hastifer Werderm. & Boed. species synonym

Echinocactus hamulosus Regel species synonym

Echinocactus hamatus J.Forbes species synonym

Echinocactus ehrenbergii Pfeiff. species synonym

Echinocactus conothele, 1860 species homotypic synonym

Echinocactus buekii KleinBis species synonym

Hamatocactus setispinus var. setaceus (Engelm.) W.T.Marshall variety synonym

Hamatocactus setispinus f. orcuttii (K.Schum.) Krainz form synonym

Hamatocactus setispinus f. flavibaccatus G.Unger form synonym

Hamatocactus setispinus var. cachetianus (Labour.) F.M.Knuth variety synonym

Hamatocactus bicolor (Terán & Berland.) I.M.Johnst. species proparte synonym

Echinomastus macdowellii (Orcutt) Britton & Rose species synonym

Thelocactus vaskoanus Halda, Hovorka & Zatloukal species synonym

Thelocactus tulensis subsp. vaskoanus (Halda, Hovorka & Zatloukal) Halda, Kupcák & Malina subspecies synonym

Thelocactus tulensis var. matudae (Sánchez-Mej. & A.B.Lau) E.F.Anderson variety synonym

Thelocactus tulensis var. longispinus Y.Itô variety synonym

Thelocactus tulensis subsp. kupcaki Halda & Sladk. subspecies synonym

Thelocactus tulensis subsp. huizachensis Halda & Sladk. subspecies synonym

Thelocactus tulensis var. buekii (E.Klein bis) E.F.Anderson variety synonym

Thelocactus setispinus var. orcuttii (K.Schum.) Pilbeam variety synonym

Thelocactus setispinus var. mierensis (K.Schum.) Pilbeam variety synonym

Thelocactus setispinus var. hamatus (Muehlenpf.) Pilbeam variety synonym

Thelocactus setispinus var. cachetianus (Labour.) Pilbeam variety synonym

Thelocactus santaclarensis Halda, Kupcák & Sladk. species synonym

Thelocactus sanchezmejoradai J.Meyrán species synonym

Thelocactus sanchezmejoradae J.Meyrán species synonym

Thelocactus rinconensis subsp. phymatothelos (Poselg. ex Rümpler) Doweld subspecies synonym

Thelocactus rinconensis var. phymatothele (Poselg. ex Rümpler) Glass & R.A.Foster variety synonym

Thelocactus rinconensis subsp. palomaensis Pavlícek & Zatloukal subspecies synonym

Thelocactus rinconensis var. nidulans (Quehl) Glass & R.A.Foster variety synonym

Thelocactus rinconensis subsp. multicephalus (Halda & Panar) Lüthy subspecies synonym

Thelocactus rinconensis subsp. icamolensis Halda & Kupcák subspecies synonym

Thelocactus rinconensis subsp. hintonii Lüthy subspecies synonym

Thelocactus rinconensis subsp. freudenbergeri (R.Haas) Mosco & Zanov. subspecies synonym

Thelocactus porrectus (Lem.) F.M.Knuth species synonym

Thelocactus phymatothelos (Poselg.) Britton & Rose species synonym

Thelocactus phymatothele (Poselg.) Britton & Rose species synonym

Thelocactus nidulans subsp. matudae (Sánchez-Mej. & A.B.Lau) N.P.Taylor subspecies synonym

Thelocactus multicephalus Halda & Panar. species synonym

Thelocactus ×mirandus Halda & Panar. species accepted

Thelocactus mcdowellii Quehl species doubtful

Thelocactus matudae Sánchez-Mej. & A.B.Lau species synonym

Thelocactus macdowellii (Rebut ex Quehl) Kladiwa & Fittkau species synonym

Thelocactus lophothele var. nidulans (Quehl) Kladiwa & Fittkau variety synonym

Thelocactus leucacanthus subsp. schmollii (Werderm.) Mosco & Zanov. subspecies synonym

Thelocactus leucacanthus var. sanchezmejoradae (J.Meyrán) Backeb. variety synonym

Thelocactus leucacanthus var. porrectus (Lem.) Backeb. variety synonym

Thelocactus leucacanthus f. krainzianus (Oehme) H.Nagl form synonym

Thelocactus leucacanthus var. ehrenbergii (Pfeiff.) Bravo variety synonym

Thelocactus lausseri Ríha & Busek species accepted

Thelocactus krainzianus Oehme species synonym

Thelocactus hastifer (Werderm. & Boed.) F.M.Knuth species accepted

Thelocactus ehrenbergii (Pfeiff.) F.M.Knuth species synonym

Thelocactus conothelos var. macdowellii (Rebut ex Quehl) Glass & R.A.Foster variety synonym

Thelocactus conothele var. mcdowellii (Rebut ex Quehl) G.Glass & R.A.Foster, 1977 variety synonym

Thelocactus conothele var. aurantiacus Glass & R.A.Foster, 1972 variety synonym

Thelocactus conothele var. argenteus Glass & R.A.Foster, 1972 variety synonym

Thelocactus buekii subsp. matudae (Sánchez-Mej. & A.B.Lau) Mosco & Zanov. subspecies synonym

Thelocactus buekii subsp. jarmilae Halda & Horácek subspecies synonym

Echinocactus tulensis Poselg. species synonym

Neolloydia macdowellii (Rebut ex Quehl) H.E.Moore species synonym

Echinocactus subporrectus Lem. species synonym

Ferocactus leucacanthus (Zucc. ex Pfeiff.) N.P.Taylor species synonym

Ferocactus hastifer (Werderm. & Boed.) N.P.Taylor species synonym

Echinocactus setispinus var. setaceus Engelm. variety synonym

Echinocactus setispinus var. robustus Poselg. variety synonym

Echinocactus setispinus var. orcuttii K.Schum. variety synonym

Echinocactus setispinus var. muehlenpfordtii (J.H.Fennell) J.M.Coult. variety synonym

Echinocactus setispinus var. mierensis K.Schum. variety synonym

Echinocactus setispinus var. cachetianus Labour. variety synonym

Echinocactus setipinus var. cachetianus Labour. variety synonym

Echinocactus rinconensis Poselg. species synonym

Echinocactus rinconadensis Schum. species synonym

Echinocactus porrectus Lem. species synonym

Echinocactus leucacanthus Zucc. ex Pfeiff. species synonym

Hamatocactus setispinus (Engelm.) Britton & Rose species synonym

Torreycactus conothele (Regel & E.Klein bis) Doweld species doubtful

Thelocactus tulensis (Poselg.) Britton & Rose species accepted

Thelocactus rinconensis (Poselg.) Britton & Rose species accepted

Thelocactus rinconensis subsp. rinconensis subspecies synonym

Thelocactus nidulans (Quehl) Britton & Rose species synonym

Thelocactus lophothele (Salm-Dyck) Britton & Rose species synonym

Thelocactus leucanthus species accepted

Thelocactus leucacanthus (Zucc. ex Pfeiff.) Britton & Rose species accepted

Thelocactus leucacanthus subsp. leucacanthus subspecies synonym

Thelocactus hexaedrophorus (Lem.) Britton & Rose species accepted

Thelocactus hexaedraphorus species accepted

Thelocactus conothelos (Regel & E.Klein bis) F.M.Knuth species accepted

Thelocactus conothele species homotypic synonym

Thelocactus buekii (E.Klein bis) Britton & Rose species accepted

Thelocactus bueckii species accepted

Echinocactus droegeanus Hildm. ex K.Schum. species synonym

Echinocactus cachetianus (Labour.) Hildm. species synonym

Mammillaria engelmannii Cory species synonym

Echinopsis nodosa Linke species synonym

Cereus maelenii Pfeiff. species synonym

Mammillaria maelenii Salm-Dyck species synonym

Echinocactus flavidispinus (Backeb.) D.Weniger species synonym

Echinocactus leucacanthus var. tuberosus C.F.Först. variety synonym

Echinocactus labouretianus Cels ex K.Schum. species synonym

Echinocactus maelenii Salm-Dyck ex C.F.Först. species synonym

Thelocactus leucacanthus var. schmollii Werderm. variety synonym

Echinocereus bicolor Galeotti ex Pfeiff. species synonym

Echinocactus tuberosus Salm-Dyck species homotypic synonym

Echinocereus bicolor Galeotti species homotypic synonym

Echinocactus maelenii Salm-Dyck species homotypic synonym

Echinocactus buekii E.Klein bis species synonym

Thelocactus leucacanthus var. sanchezmejoradai (J.Meyrán) Backeb. variety synonym

Echinocactus rinconensis Poselg. ex C.F.Först. species synonym

Hamatocactus setispinus f. cachetianus (Labour.) Krainz form synonym

Thelocactus tulensis subsp. matudae (Sánchez-Mej. & A.B.Lau) N.P.Taylor subspecies synonym

Thelocactus tulensis subsp. buekii (E.Klein bis) N.P.Taylor subspecies synonym

Thelocactus rinconensis var. phymatothelos (Poselg.) Glass & R.A.Foster variety synonym

Thelocactus rinconensis subsp. nidulans (Quehl) Doweld subspecies synonym

Thelocactus rinconensis var. freudenbergeri R.Haas variety synonym

Thelocactus conothele subsp. aurantiacus (Glass & R.A.Foster) Glass, 1997 subspecies synonym

Thelocactus conothele subsp. argenteus (Glass & R.A.Foster) Glass, 1997 subspecies synonym

Thelocactus buekii var. matudae (Sánchez-Mej. & A.B.Lau) E.F.Anderson, 1987 variety synonym

Echinocactus setispinus f. orcuttii (K.Schum.) Schelle form synonym

Echinocactus setispinus f. mierensis (K.Schum.) Schelle form synonym

Echinocactus setispinus f. hamatus (Muehlenpf.) Schelle form synonym

Echinocactus setispinus f. cachetianus (Labour.) Schelle form synonym