Gymnocalycium monvillei f. villamercedense H.Till & Neuhuber in Gymnocalycium 6: 105. 1993
Gymnocalycium monvillei f. villamercedense in Gymnocalycium 6: 105. 1993
is basionym for Gymnocalycium achirasense var. villamercedense, 11000 km Argentina Kaktusy: 89. 2010