Gymnocalycium horridispinum G.Frank & H.Till in Kakteen And. Sukk. 38(8): 191. 1987 Gymnocalycium horridispinum G.Frank & H.Till in Kakteen And. Sukk. 38(8): 191. 1987is basionym for Gymnocalycium monvillei subsp. horridispinum (G.Frank & H.Till) H.Till in Gymnocalycium 6(3): 102. 1993Taxon for this nameGymnocalycium horridispinum G.Frank & H.Till