Gymnocalycium reductum subsp. sibalii (Halda & Milt) Neuhuber in Gymnocalycium 21: 758. 2008
Gymnocalycium reductum subsp. sibalii in Gymnocalycium 21: 758. 2008
is new combination for Gymnocalycium sibalii in Acta Mus. Richnov., Sect. Nat., 13: 7. 2006