Astrophytum pygmaeum (Speg.) Halda & Malina in Acta Mus. Richnov., Sect. Nat., 12(1): 14. 2005
Astrophytum pygmaeum in Acta Mus. Richnov., Sect. Nat., 12(1): 14. 2005
is new combination for Echinocactus pygmaeus in Anales Mus. Nac. Buenos Aires, ser. 3, 4: 497. 1905