Echinocactus gibbosus var. chubutensis Speg. in Anales Mus. Nac. Buenos Aires 7: 285. 1902
Echinocactus gibbosus var. chubutensis in Anales Mus. Nac. Buenos Aires 7: 285. 1902
is basionym for Gymnocalycium chubutense in Anales Soc. Ci. Argent. 99: 137. 1925
is basionym for Gymnocalycium gibbosum var. chubutense in Gymnocalycium 9: 201. 1996