Mammillaria nivosa Link Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Caryophyllales family Cactaceae genus Mammillaria species Mammillaria nivosa Name Homonyms Mammillaria nivosa Link ex Pfeiff. Mammillaria nivosa J.Forbes, 1837 Mammillaria nivosa Link