Mammillaria saffordii Britton & Rose Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Caryophyllales family Cactaceae genus Mammillaria species Mammillaria carretii Name Homonyms Mammillaria saffordii (Britton & Rose) Bravo Mammillaria saffordii Britton & Rose