Echinocactus kurtzianus Gürke in Monatsschr. Kakteenk. 16: 55. 1906
Echinocactus kurtzianus in Monatsschr. Kakteenk. 16: 55. 1906
is basionym for Gymnocalycium kurtzianum, Cactaceae 3: 163. 1922
is basionym for Gymnocalycium mostii var. kurtzianum, Kaktus-ABC: 292. 1936 ["1935"]
is basionym for Gymnocalycium mostii f. kurtzianum in Gymnocalycium 15: 430. 2002