Echinocactus gibbosus var. ventanicola Speg. in Anales Mus. Nac. Buenos Aires, ser. 3, 2: 7. 1903
Echinocactus gibbosus var. ventanicola in Anales Mus. Nac. Buenos Aires, ser. 3, 2: 7. 1903
is basionym for Gymnocalycium platense var. ventanicola in Darwiniana 24: 441. 1982