Turbinicarpus roseiflorus Backeb. Turbinicarpus roseiflorus Backeb., Descr. Cact. Nov. 3: 15. 1963 sec. Guzmán & al. 2003=Gymnocactus roseiflorus (Backeb.) Gerhart Frank in Succulenta (Netherlands) 72: 42. 1993 syn. sec. Guzmán & al. 2003