Echinocactus hyptiacanthus Lem., Cact. Gen. Sp. Nov.: 21. 1839
Echinocactus hyptiacanthus, Cact. Gen. Sp. Nov.: 21. 1839
is basionym for Gymnocalycium hyptiacanthum, Cactaceae 3: 156. 1922
is basionym for Gymnocalycium gibbosum var. hyptiacanthum, Saboten: 89. 1962
is basionym for Gymnocalycium platense var. hyptiacanthum, Kaktus-ABC: 194. 1936 ["1935"]
Type: Uruguay, dept. Florida, Ruta 5, Cerro Pelatdo, 17 Jun 1990, Kiesling & Kroenlein 8505 (SI)