Gymnocalycium spegazzinii subsp. armatum (F.Ritter) Halda & Šorma in Acta Mus. Richnov., Sect. Nat., 9: 65. 2002
Gymnocalycium spegazzinii subsp. armatum in Acta Mus. Richnov., Sect. Nat., 9: 65. 2002
is new combination for Gymnocalycium armatum, Kakteen Südamerika 2: 662. 1980