Pseudoespostoa nana (F.Ritter) Backeb., Kakteenlex.: 371. 1966 Pseudoespostoa nana (F.Ritter) Backeb., Kakteenlex.: 371. 1966is new combination for Espostoa nana F.Ritter in Taxon 13(4): 143. 1964Taxon for this namePseudoespostoa nana (F.Ritter) Backeb.
