Gymnocalycium hyptiacanthum subsp. uruguayense (Arechav.) Mereg. in Cactaceae Syst. Init. 24: 24. 2008
Gymnocalycium hyptiacanthum subsp. uruguayense in Cactaceae Syst. Init. 24: 24. 2008
is new combination for Echinocactus uruguayensis in Anales Mus. Nac. Montevideo 5: 218. 1905