Echinocactus pygmaeus Speg. in Anales Mus. Nac. Buenos Aires, ser. 3, 4: 497. 1905

Echinocactus pygmaeus Speg. in Anales Mus. Nac. Buenos Aires, ser. 3, 4: 497. 1905

Echinocactus pygmaeus Speg. in Anales Mus. Nac. Buenos Aires, ser. 3, 4: 497. 1905

is basionym for Frailea pygmaea (Speg.) Britton & Rose, Cactaceae 3: 210–211. 1922

is basionym for Astrophytum pygmaeum (Speg.) Halda & Malina in Acta Mus. Richnov., Sect. Nat., 12(1): 14. 2005

Taxon for this name

Echinocactus pygmaeus Speg.