Eriosyce pygmaea (F.Ritter) Ferryman in Cactaceae Syst. Init. 16: 11. 2003 Eriosyce pygmaea (F.Ritter) Ferryman in Cactaceae Syst. Init. 16: 11. 2003is new combination for Pyrrhocactus pygmaeus F.Ritter in Taxon 12: 32. 1963Taxon for this nameEriosyce pygmaea (F.Ritter) Ferryman