Echinocactus geissei Poselg. ex K.Schum., Gesamtbeschr. Kakt.: 406. 1897–1899
Echinocactus geissei, Gesamtbeschr. Kakt.: 406. 1897–1899
is basionym for Horridocactus geissei in Repert. Spec. Nov. Regni Veg. 51: 61. 1942
is basionym for Hildmannia geissei in Repert. Spec. Nov. Regni Veg. 50: 206. 1941
is basionym for Neoporteria curvispina var. geissei in Cact. Succ. J. Gr. Brit. 28: 56. 1966