Mammillaria nana Backeb. ex Mottram Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Caryophyllales family Cactaceae genus Mammillaria species Mammillaria nana Name Homonyms Mammillaria nana Backeb. Mammillaria nana Backeb. ex Mottram