Echinocactus whipplei var. glaucus (K.Schum.) J.A.Purpus variety synonym

Echinomastus urguispinus (Engelm.) Britton & Rose species synonym

Sclerocactus brevihamaticus (Engelm.) D.R.Hunt species synonym

Echinocereus pectinatus var. centralis J.M.Coult. variety synonym

Echinomastus johnstonei E.M.Baxter species synonym

Echinomastus intertextus var. intertextus variety synonym

Thelocactus unguispinus (Engelm.) W.T.Marshall species synonym

Echinocactus durangensis Ruenge species synonym

Sclerocactus whipplei var. spinosior Engelm., 1863 variety synonym

Sclerocactus pinkavanus (García-Mor., Gonz.-Bot. & Rodr.González) species accepted

Ancistrocactus pinkavanus García-Mor., Gonz.-Bot. & Rodr.González species synonym

Echinoccatus johnsonii Parry species homotypic synonym

Echinoccatus johnsonii Parry ex Engelm. species synonym

Roseia castanedae Frič species synonym

Echinomastus unguispinus var. crassihamatus Kaku & Y.Itô variety synonym

Toumeya papyracantha (Engelm.) Britton & Rose species synonym

Sclerocactus ilseae (Hochstätter) Hochstätter species synonym

Ancistrocactus scheeri f. megarrhizus (Rose) Krainz form synonym

Echinomastus urguispinua Britton & Rose species synonym

Pediocactus parviflorus subsp. terrae-canyonii (K.D.Heil) Halda subspecies synonym

Sclerocactus parviflorus var. blessingii W.H.Earle variety synonym

Sclerocactus frankliniae J.W.Evans species synonym

Papyrocactus papyracanthus (Engelm.) Doweld species synonym

Turbinicarpus gautii (L.D.Benson) A.D.Zimmerman species synonym

Neolloydia gautii L.D.Benson species synonym

Sclerocactus schlesseri K.D.Heil & S.L.Welsh species synonym

Sclerocactus sheeri (Salm-Dyck) N.P.Taylor species synonym

Sclerocactus pubispinus (Engelm.) L.D.Benson species accepted

Sclerocactus blainei S.L.Welsh & K.H.Thorne species accepted

Sclerocactus mariposensis (Hester) N.P.Taylor species accepted

Neolloydia mariposensis (Hester) L.D.Benson species synonym

Echinomastus mariposensis Hester species synonym

Echinocactus mariposensis (Hester) Weniger species synonym

Sclerocactus cloveriae K.D.Heil & J.M.Porter species synonym

Sclerocactus whipplei var. heilii Castetter, P.Pierce & K.H.Schwer. variety synonym

Sclerocactus whipplei var. reevsii Castetter, P.Pierce & K.H.Schwer. variety synonym

Sclerocactus whipplei (Engelm. & J.M.Bigelow) Britton & Rose species accepted

Sclerocactus warnockii (L.D.Benson) N.P.Taylor species accepted

Echinocactus warnockii (L.D.Benson) D.Weniger species synonym

Echinomastus warnockii (Benson) Glass & R.A.Foster species synonym

Neolloydia warnockii L.D.Benson species synonym

Sclerocactus spinosior (Engelm.) D.Woodruff & L.D.Benson species accepted

Sclerocactus pubispinus var. sileri L.D.Benson variety synonym

Sclerocactus sileri (L.D.Benson) K.D.Heil & J.M.Porter species accepted

Sclerocactus whipplei var. spinosior (Engelm.) Boissev. variety synonym

Sclerocactus pubispinus var. spinosior (Engelm.) S.L.Welsh variety synonym

Echinocactus whipplei var. spinosior Engelm. variety synonym

Sclerocactus johnsonii (Parry ex Engelm.) N.P.Taylor species accepted

Sclerocactus nyensis Hochstätter species accepted

Sclerocactus scheerii (Salm-Dyck) N.P.Taylor species accepted

Ancistrocactus scheeri (Salm-Dyck) Britton & Rose species synonym

Echinocactus scheeri Salm-Dyck species synonym

Sclerocactus mesae-verdae (Boissev. & C.Davidson) L.D.Benson species accepted

Sclerocactus brevihamatus (Engelm.) D.R.Hunt species accepted

Sclerocactus brevispinus K.D.Heil & J.M.Porter species accepted

Sclerocactus wrightiae L.D.Benson species accepted

Pediocactus wrightiae (L.D.Benson) Arp species synonym

Sclerocactus parviflorus Clover & Jotter species accepted

Sclerocactus glaucus (K.Schum.) L.D.Benson species accepted

Sclerocactus franklinii J.W.Evans species synonym

Pediocactus glaucus (K.Schum.) Arp species synonym

Sclerocactus whipplei var. glaucus (K.Schum.) S.L.Welsh variety synonym

Echinocactus whipplei var. glaucus K.Schum. variety synonym

Echinocactus subglacus Rydb. species synonym

Sclerocactus intertextus (Engelm.) N.P.Taylor species accepted

Sclerocactus papyracanthus (Engelm.) N.P.Taylor species accepted

Pediocactus papyracanthus (Engelm.) L.D.Benson species synonym

Echinocactus papyracanthus (Engelm.) Engelm. species synonym

Toumeya papyracantha (Engelm.) Britton & Rose ex M.P.Berg species synonym

Sclerocactus polyancistrus (Engelm. & J.M.Bigelow) Britton & Rose species accepted

Echinocactus polyancistrus Engelm. & J.M.Bigelow species synonym

Sclerocactus whipplei var. reevesii Castetter, P.Pierce & K.H.Schwer. variety synonym

Sclerocactus whipplei var. ilseae (Hochstätter) S.L.Welsh variety synonym

Sclerocactus whipplei subsp. cloverae (K.D.Heil & J.M.Porter) Hochstätter subspecies synonym

Sclerocactus wetlandicus subsp. ilseae (Hochstätter) Hochstätter subspecies synonym

Echinocactus megarrhizus Rose species synonym

Sclerocactus unguispinus var. durangensis (Ruenge) N.P.Taylor variety synonym

Sclerocactus spinosior var. schlesseri (K.D.Heil & S.L.Welsh) Hochstätter variety synonym

Sclerocactus spinosior subsp. nyensis (Hochstätter) Lüthy subspecies synonym

Sclerocactus spinosior subsp. blainei (S.L.Welsh & K.H.Thorne) Hochstätter subspecies synonym

Sclerocactus intertextus var. dasyacanthus (Engelm.) N.P.Taylor variety synonym

Sclerocactus glaucus subsp. wetlandicus (Hochstätter) Lüthy subspecies synonym

Sclerocactus cloveriae subsp. brackii K.D.Heil & J.M.Porter subspecies synonym

Sclerocactus cloverae subsp. brackii K.D.Heil & J.M.Porter subspecies synonym

Echinocactus intertextus var. dasyacanthus Engelm. variety synonym

Roseia castanedai Frič species doubtful

Pediocactus wetlandicus f. ilseae (Hochstätter) Halda form synonym

Pediocactus warnockii (L.D.Benson) Halda species synonym

Pediocactus unguispinus var. durangensis (Runge) Halda variety synonym

Pediocactus spinosior var. schlesseri (K.D.Heil & S.L.Welsh) Halda variety synonym

Pediocactus spinosior subsp. blainei (S.L.Welsh & K.H.Thorne) Halda subspecies synonym

Pediocactus scheeri (Salm-Dyck) Halda species synonym

Pediocactus pubispinus subsp. sileri (L.D.Benson) Halda subspecies synonym

Pediocactus polyancistrus (Engelm. & J.M.Bigelow) Arp species synonym

Pediocactus payracantha (Engelm.) L.D.Benson species synonym

Pediocactus nyensis (Hochstätter) Halda species synonym

Pediocactus mariposensis (Hester) Halda species synonym

Pediocactus intertextus var. dasyacanthus (Engelm.) Halda variety synonym

Pediocactus gautii (L.D.Benson) Halda species synonym

Pediocactus cloverae subsp. brackii (K.D.Heil & J.M.Porter) Halda subspecies synonym

Echinomastus unguispinus subsp. minimus (A.B.Lau) U.Guzmán subspecies synonym

Echinomastus unguispinus subsp. laui (G.Frank & Zecher) C.E.Glass subspecies synonym

Echinomastus unguispinus var. durangensis (Ruenge) Bravo variety synonym

Echinomastus ungispinus var. crassihamatus Kaku & Y.Itô variety synonym

Echinomastus mariposensis subsp. fischeri Halda & Sladk. subspecies synonym

Echinomastus mapimiensis Backeb. species synonym

Echinomastus laui G.Frank & Zecher species synonym

Echinomastus kakui Backeb. species doubtful

Echinomastus intertextus subsp. dasyacanthus (Engelm.) U.Guzmán subspecies synonym

Echinomastus hispidus D.Donati & Zanov. species synonym

Echinomastus gautii (L.D.Benson) Mosco & Zanov. species synonym

Echinomastus durangensis (Ruenge) Britton & Rose species synonym

Echinomastus dasyacanthus (Engelm.) Britton & Rose species synonym

Echinomastus centralis (J.M.Coult.) Y.Itô species synonym

Toumeya papyrancantha (Engelm.) Britton & Rose species synonym

Thelocactus unguispinus (Engelm.) G.D.Rowley species synonym

Thelocactus intertextus (Engelm.) W.T.Marshall species synonym

Thelocactus durangensis (Ruenge) G.D.Rowley species synonym

Thelocactus dasyacanthus (Engelm.) W.T.Marshall species synonym

Ancistrocactus megarhizus (Rose) Britton & Rose species synonym

Echinocereus pectinatus var. centralis (J.M.Coult.) K.Schum. variety synonym

Echinocereus centralis (J.M.Coult.) Rose species synonym

Ferocactus wrightiae (L.D.Benson) N.P.Taylor species synonym

Echinocactus unguispinus Engelm. species synonym

Ferocactus spinosior (Engelm.) N.P.Taylor species synonym

Neolloydia unguispina (Engelm.) L.D.Benson species synonym

Ferocactus scheeri (Salm-Dyck) N.P.Taylor species synonym

Ferocactus pubispinus (Engelm.) N.P.Taylor species synonym

Ferocactus polyancistrus (Engelm. & J.M.Bigelow) N.P.Taylor species synonym

Neolloydia intertexta var. dasyacantha (Engelm.) L.D.Benson variety synonym

Echinocactus subglaucus Rydb. species synonym

Neolloydia durangensis (Ruenge) L.D.Benson species synonym

Ferocactus glaucus (K.Schum.) N.P.Taylor species synonym

Echinocactus pubispinus Engelm. species synonym

Sclerocactus wetlandicus Hochstätter species accepted

Sclerocactus unguispinus (Engelm.) N.P.Taylor species accepted

Sclerocactus spinosior subsp. spinosior subspecies synonym

Sclerocactus cloverae K.D.Heil & J.M.Porter species accepted

Pediocactus wetlandicus (Hochstätter) Halda species synonym

Pediocactus unguispinus (Engelm.) Halda species heterotypic synonym

Pediocactus spinosior (Engelm.) Halda species synonym

Pediocactus pubispinus (Engelm.) Halda species synonym

Pediocactus intertextus (Engelm.) Halda species synonym

Pediocactus cloverae (K.D.Heil & J.M.Porter) Halda species synonym

Echinomastus unguispinus (Engelm.) Britton & Rose species synonym

Echinomastus unguispinus subsp. unguispinus subspecies synonym

Sclerocactus pubispinus var. pubispinus variety synonym

Cereus pectinatus var. centralis J.M.Coult. variety synonym

Mammillaria papyracantha Engelm. species synonym

Echinomastus durangensis Runge species synonym

Sclerocactus spinosior var. schlesseri (Heil & Welsh) R.May variety synonym

Thelocactus durangensis (Ruenge) W.T.Marshall species synonym

Echinocactus glaucus K.Schum. species synonym

Sclerocactus whipplei var. whipplei variety synonym

Sclerocactus whipplei subsp. heilii (Castetter, P.Pierce & K.H.Schwer.) D.R.Hunt subspecies synonym

Sclerocactus wetlandicus var. ilseae Hochstätter variety synonym

Sclerocactus spinosior var. blainei (S.L.Welsh & K.H.Thorne) R.May variety synonym

Echinocactus intertextus Engelm. species heterotypic synonym

Echinocactus intertextus f. dasyacanthus (Engelm.) Schelle form synonym

Echinomastus unguispinus var. minimus A.B.Lau variety synonym

Echinomastus unguispinus var. laui (Frank & Zecher) Glass & R.A.Foster variety synonym

Echinomastus unguispinus subsp. durangensis (Runge) U.Guzmán subspecies synonym

Echinomastus intertextus (Engelm.) Britton & Rose species synonym

Echinomastus intertextus var. dasyacanthus (Engelm.) Backeb. variety synonym

Echinocactus whipplei f. spinosior (Engelm.) Schelle form synonym

Neolloydia intertexta (Engelm.) L.D.Benson species synonym

Sclerocactus intertextus var. intertextus variety synonym