Ariocarpus retusus subsp. sladkovskyi Halda & Kupčák in Acta Mus. Richnov., Sect. Nat., 7: 33. 2000 Ariocarpus retusus subsp. sladkovskyi Halda & Kupčák in Acta Mus. Richnov., Sect. Nat., 7: 33. 2000Taxon for this nameAriocarpus retusus subsp. sladkovskyi Halda & Kupčák