Mammillaria mystax hort. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Caryophyllales family Cactaceae genus Mammillaria species Mammillaria mystax Name Homonyms Mammillaria mystax hort. ex Pfeiff., 1837 Mammillaria mystax Mart. Mammillaria mystax hort.