Gymnocalycium capillense var. sigelianum (Schick) H.Till in Gymnocalycium 16: 497. 2003
Gymnocalycium capillense var. sigelianum in Gymnocalycium 16: 497. 2003
is new combination for Echinocactus sigelianus in Möller's Deutsche Gärt.-Zeitung 38(26): 201. 1923