Mammillaria orcuttii Boed. Mammillaria orcuttii Boed. in Monatsschr. Deutsch. Kakteen-Ges. 2: 258. 1930 sec. Hunt 2016=Mammillaria phantasma Sotom., Arred. & Mart. Mend. in Cact. Suc. Mex. 44: 34. 1999 syn. sec. Guzmán & al. 2003