Mammillaria tonalensis D.R. Hunt Mammillaria tonalensis D.R. Hunt in Cact. Succ. J. Gr. Brit. 41: 103. 1979 sec. Hunt 2016=Escobariopsis tonalensis (D.R. Hunt) Doweld in Sukkulenty 3: 41. 2000 syn. sec. Guzmán & al. 2003