Frailea phaeodisca (Speg.) Speg. species doubtful

Frailea altigibbera P.J.Braun & Esteves species accepted

Frailea phaeodisca (Speg.) Spreg. species doubtful

Frailea erythracantha R.Pontes, A.S.Oliveira & Deble species accepted

Frailea angelesiae R.Kiesling ex Prestlé, 1997 species accepted

Frailea piltzii C.A.L.Bercht & Schädlich species accepted

Echinocactus schilinskyanus F.Haage f. species homotypic synonym

Echinocactus schilinskyanus F.Haage f. ex K.Schum. species synonym

Frailea angelesiae R.Kiesling species homotypic synonym

Frailea diersiana Schädlich species accepted

Frailea cataphracta var. duchii G.Moser variety synonym

Frailea pygmaea (Speg.) Britton & Rose species accepted

Frailea pumila (Lem.) Britton & Rose species accepted

Frailea stockingeri Prestlé species accepted

Frailea schilinzkyana (F.Haage ex K.Schum.) Britton & Rose species accepted

Frailea pullispina Backeb. species synonym

Frailea phaeoareolata Prestlé, 1997 species accepted

Frailea phaeacantha Prestlé, 1997 species accepted

Frailea perumbilicata F.Ritter species synonym

Frailea oreopygmaea species accepted

Frailea neoaureispina Prestlé, 1997 species accepted

Frailea mammifera Buining & Brederoo species accepted

Frailea machadoa Prestlé, 1997 species accepted

Frailea gracillima (Lem.) Britton & Rose species accepted

Frailea cataphracta (Dams) Britton & Rose species accepted

Frailea cataphracta subsp. cataphracta subspecies synonym

Frailea castanea Backeb. species accepted

Frailea castanea subsp. castanea subspecies synonym

Frailea buenekeri W.R.Abraham species accepted

Frailea asterioides Werderm. species synonym

Astrophytum uhligianum (Backeb.) Halda & Malina species synonym

Astrophytum pullispinum (Backeb.) Halda & Malina species synonym

Astrophytum phaeodiscum (Speg.) Halda & Malina species synonym

Astrophytum perumbilicatum (F.Ritter) Halda & Malina species synonym

Astrophytum perbellum (Prestlé) Halda & Malina species synonym

Astrophytum melitae (Buining & Brederoo) Halda & Malina species synonym

Astrophytum matoanum (Buining & Brederoo) Halda & Malina species synonym

Astrophytum curvispinum (Buining & Brederoo) Halda & Malina species synonym

Astrophytum chiquitanum (Cárdenas) Halda & Malina species synonym

Astrophytum cataphractum (Dams) Halda & Malina species synonym

Astrophytum castaneum (Backeb.) Halda & Malina species synonym

Astrophytum asterioides (Werderm.) Halda & Malina species synonym

Astrophytum buenekeri (W.R.Abraham) Halda & Malina species synonym

Echinocactus cataphractus Dams species synonym

Echinocactus asterioides (Werderm.) Werderm. species synonym

Frailea uhligiana Backeb. species synonym

Frailea tunilla Prestlé, 1997 species accepted

Frailea schlosseri Prestlé, 1997 species accepted

Frailea schilinzkyana subsp. matoana (Buining & Brederoo) Berka subspecies synonym

Frailea rufida Prestlé, 1997 species accepted

Frailea ritteriana Prestlé, 1997 species accepted

Frailea pygmaea var. phaeodisca (Speg.) Y.Itô variety synonym

Frailea pullispina var. centrispina Backeb. variety synonym

Frailea pullispina var. atrispina Backeb. variety synonym

Frailea pseudograhliana Frič ex Backeb. & F.M.Knuth, 1936 species accepted

Frailea pseudocataphracta Prestlé, 1997 species accepted

Frailea pilzii Prestlé, 1997 species accepted

Frailea phaeodisca (Speg.) Backeb. & F.M.Knuth species accepted

Frailea perumbilicata var. spinosior F.Ritter variety synonym

Frailea perbella Prestlé species synonym

Frailea neogracillima Prestlé, 1997 species accepted

Frailea melitae Buining & Brederoo species synonym

Frailea matoana Buining & Brederoo species synonym

Frailea lepta Prestlé, 1997 species accepted

Frailea larae R.Vásquez species synonym

Frailea klingleriana Prestlé, 1997 species accepted

Frailea gigantea Prestlé, 1997 species accepted

Frailea fecotriga Prestlé, 1997 species accepted

Frailea densispina (Hofacker & K.Herm) N.Gerloff species synonym

Frailea curvispina Buining & Brederoo species accepted

Frailea crucifica Prestlé, 1997 species accepted

Frailea chiquitana Cárdenas species accepted

Frailea caveraensis Prestlé, 1997 species accepted

Frailea cataphractoides Backeb. species synonym

Frailea cataphracta subsp. melitae (Buining & Brederoo) P.J.Braun & Esteves subspecies synonym

Frailea cataphracta subsp. duchii (G.Moser) P.J.Braun & Esteves subspecies synonym

Frailea castanea var. perumbilicata (F.Ritter) Prestlé variety synonym

Frailea castanea subsp. harmoniana (F.Ritter) P.J.Braun & Esteves subspecies synonym

Frailea castanea f. ferruginea Prestlé form synonym

Frailea castanea f. auricantha Prestlé form synonym

Frailea castanea f. albiseta Prestlé form synonym

Frailea buenekeri subsp. pygmaeoidea Prestlé subspecies synonym

Frailea buenekeri subsp. gemmrichii Prestlé subspecies synonym

Frailea buenekeri subsp. densispina Hofacker & K.Herm subspecies synonym

Frailea asterioides var. harmoniana F.Ritter variety synonym

Frailea asterioides var. backebergii F.Ritter variety synonym

Frailea altasensis Prestlé species accepted

Frailea alexandri Metzing species accepted

Echinocactus pygmaeus var. phaeodiscus Speg. variety synonym

Echinocactus asteroides (Werderm.) Werderm. species synonym

Frailea carminifilamentosa Kilian ex Backeb. species synonym

Frailea cataphracta subsp. melitae (Buining & Brederoo) Prestlé subspecies synonym

Frailea asteroides Werderm. species synonym

Frailea asteroides var. harmoniana F.Ritter variety synonym

Frailea asteroides var. backebergii F.Ritter variety synonym

Echinocactus gracilis Lem. species synonym

Frailea tuiyensis Buining & G.Moser species synonym

Frailea pseudograhliana Frič species homotypic synonym

Frailea angelesii R.Kiesling species accepted