= Astrophytum asperispinum (F.Ritter) Halda & Malina; Acta Mus. Richnov., Sect. Nat. 12(1): 12 (2005)
= Astrophytum aureinitens (Buining & Brederoo) Halda & Malina; Acta Mus. Richnov., Sect. Nat. 12(1): 12 (2005)
= Astrophytum aureispinum (F.Ritter) Halda & Malina; Acta Mus. Richnov., Sect. Nat. 12(1): 12 (2005)
= Astrophytum aureum (Backeb.) Halda & Malina; Acta Mus. Richnov., Sect. Nat. 12(1): 12 (2005)
= Astrophytum dadakii (Fric) Halda & Malina; Acta Mus. Richnov., Sect. Nat. 12(1): 13 (2005)
= Astrophytum pseudopulcherrimum (Y.Itô) Halda & Malina; Acta Mus. Richnov., Sect. Nat. 12(1): 14 (2005)
= Astrophytum pulcherrimum (Arechav.) Halda & Malina; Acta Mus. Richnov., Sect. Nat. 12(1): 14 (2005)
= Astrophytum pygmaeum (Speg.) Halda & Malina; Acta Mus. Richnov., Sect. Nat. 12(1): 14 (2005)
= Echinocactus dadakii Fric; Monatsschr. Kakteenkd. 31: 15 (1921)
= Echinocactus pulcherrimus Arechav.; Anal. Mus. Montevid. 5: 222 (1905)
= Echinocactus pygmaeus Speg.; Anal. Mus. Buenos Aires 11: 497 (1905)
= Frailea amerhauseri Prestlé; Succulenta (Netherlands) 81(3): 130-135 (2002)
= Frailea asperispina F.Ritter; Succulenta (Netherlands) 49: 124 (1970), et Kakteen Südamer. 1: 208 (1979)
= Frailea aurea Backeb.; Kaktus-ABC [Backeberg & Knuth] 247 (1936)
= Frailea aureinitens Buining & Brederoo; Succulenta (Netherlands) 55: 62 (1976)
= Frailea dadakii (Fric) A.Berger; Kakteen: 341 (1929)
= Frailea pseudopulcherrima Y.Itô; Expl. Diagr. Austroechinocact. 294 (1957)
= Frailea pulcherrima (Arechav.) Speg.; Anales Soc. Ci. Argent. 99: 131 (1925)
= Frailea pygmaea subsp. altigibbera (F.Ritter) P.J.Braun & Esteves; Succulenta (Netherlands) 74(3): 131 (1995)
= Frailea pygmaea subsp. asperispina (F.Ritter) P.J.Braun & Esteves; Succulenta (Netherlands) 74(3): 131 (1995)
= Frailea pygmaea subsp. aureinitens (Buining & Brederoo) P.J.Braun & Esteves; Succulenta (Netherlands) 74(3): 131 (1995)
= Frailea pygmaea subsp. hyssooniana Prestlé; Gatt. Frailea 83 (1997), anglice, without type
= Frailea pygmaea subsp. lilalunula (F.Ritter) P.J.Braun & Esteves; Succulenta (Netherlands) 74(3): 131 (1995)
= Frailea pygmaea subvar. cabucaensis Prestlé; Gatt. Frailea 103 (1997), anglice, without type
= Frailea pygmaea subvar. maldonadensis Prestlé; Gatt. Frailea 76 (1997), anglice, without type
= Frailea pygmaea subvar. mammilata Prestlé; Gatt. Frailea 88 (1997), anglice, without type
= Frailea pygmaea subvar. trainta Prestlé; Gatt. Frailea 77 (1997), anglice, without type
= Frailea pygmaea subvar. transqueraensis Prestlé; Gatt. Frailea 78 (1997), anglice, without type
= Frailea pygmaea var. aceguaensis Prestlé; Gatt. Frailea 103 (1997), anglice, without type
= Frailea pygmaea var. altigibbera F.Ritter; Kakteen Südamer. 1: 203 (1979)
= Frailea pygmaea var. applanata Prestlé; Gatt. Frailea 81 (1997), anglice, without type
= Frailea pygmaea var. argenta Prestlé; Gatt. Frailea 87 (1997), anglice, without type
= Frailea pygmaea var. atrofusca Backeb.; Cactaceae [Backeberg] 3: 1660 (1959)
= Frailea pygmaea var. aurea (Backeb.) Backeb.; Cactaceae [Backeberg] 3: 1661 (1959)
= Frailea pygmaea var. auricantha Prestlé; Gatt. Frailea 81 (1997), anglice, without type
= Frailea pygmaea var. bagensis Prestlé; Gatt. Frailea 102 (1997), anglice, without type
= Frailea pygmaea var. carpinteria Prestlé; Gatt. Frailea 78 (1997), anglice, without type
= Frailea pygmaea var. castaneoidea Prestlé; Gatt. Frailea 79 (1997), anglice, without type
= Frailea pygmaea var. corallina Prestlé; Gatt. Frailea 82 (1997), anglice, without type
= Frailea pygmaea var. curvispina F.Ritter; Kakteen Südamer. 1: 204 (1979)
= Frailea pygmaea var. dadakii (Fric) Backeb.; Cactaceae [Backeberg] 3: 1660 (1959)
= Frailea pygmaea var. gemmrichii Prestlé; Gatt. Frailea 98 (1997), anglice, without type
= Frailea pygmaea var. gloriosa Prestlé; Gatt. Frailea 79 (1997), anglice, without type
= Frailea pygmaea var. insignia Prestlé; Gatt. Frailea 91 (1997), anglice, without type
= Frailea pygmaea var. krausiana Prestlé; Gatt. Frailea 80 (1997), anglice, without type
= Frailea pygmaea var. largoensis Prestlé; Gatt. Frailea 77 (1997), anglice, without type
= Frailea pygmaea var. lilalunula F.Ritter; Kakteen Südamer. 1: 203 (1979)
= Frailea pygmaea var. longispina F.Ritter; Kakteen Südamer. 1: 204 (1979)
= Frailea pygmaea var. maior F.Ritter; Kakteen Südamer. 1: 204 (1979)
= Frailea pygmaea var. mollispina-brunnea Prestlé; Gatt. Frailea 99 (1997), anglice, without type
= Frailea pygmaea var. montana Prestlé; Gatt. Frailea 81 (1997), anglice, without type
= Frailea pygmaea var. olimarensis Prestlé; Gatt. Frailea 82 (1997), anglice, without type
= Frailea pygmaea var. planicosta F.Ritter; Kakteen Südamer. 1: 204 (1979)
= Frailea pygmaea var. pulcherrima (Arechav.) Prestlé; Gattung Frailea 84 (1997)
= Frailea pygmaea var. santanaensis Prestlé; Gattung Frailea 87 (1997), anglice, without type
= Frailea pygmaea var. viridilunula Prestlé; Gatt. Frailea 97 (1997), anglice, without type
= Malacocarpus pulcherrimus (Arechav.) Britton & Rose; Cactaceae [Britton & Rose] 3: 194 (1922)