Mammillaria droegeana Hildm. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Caryophyllales family Cactaceae genus Mammillaria species Mammillaria microhelia Name Homonyms Mammillaria droegeana (K.Schum.) Borg Mammillaria droegeana Hildm. ex Schelle Mammillaria droegeana Hildm.