Echinocactus platensis var. parvulus Speg. in Anales Mus. Nac. Buenos Aires, ser. 3, 4: 505. 1905
Echinocactus platensis var. parvulus in Anales Mus. Nac. Buenos Aires, ser. 3, 4: 505. 1905
is basionym for Gymnocalycium parvulum in Anales Soc. Ci. Argent. 99: 141. 1925
is basionym for Gymnocalycium platense var. parvulum, Saboten: 89. 1962