Mammillaria obscura Scheidw. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Caryophyllales family Cactaceae genus Mammillaria species Mammillaria polythele Name Homonyms Mammillaria obscura Hildm. Mammillaria obscura Scheidw. ex C.F.Först. Mammillaria obscura Scheidw.