Echinopsis pygmaea R.E.Fr. in Nova Acta Regiae Soc. Sci. Upsal. ser. 4, 1(1): 120. 1905.

Nomenclatural References

• person : Robert Elias Fries (1876-1966) Based on occurrence of standard abbreviation 'R.E.Fr.' in the authors string.
• database : The Plant List version 1.0, record: kew-2783590
• database : The Plant List version 1.1, record: kew-2783590