Mammillaria albicoma Boed. Mammillaria albicoma Boed. in Monatsschr. Deutsch. Kakteen-Ges. 1: 241. 1929 sec. Hunt 2016=Escobariopsis albicoma (Boed.) Doweld in Sukkulenty 3: 39. 2000 syn. sec. Guzmán & al. 2003