Eriosyce pygmaea subsp. calderana (F.Ritter) Ferryman in Cactaceae Syst. Init. 16: 11. 2003
Eriosyce pygmaea subsp. calderana in Cactaceae Syst. Init. 16: 11. 2003
is new combination for Pyrrhocactus calderanus in Succulenta (Netherlands) 1961: 13. 1961