Mammillaria pennispinosa Krainz ex Shurly Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Caryophyllales family Cactaceae genus Mammillaria species Mammillaria pennispinosa Name Homonyms Mammillaria pennispinosa Krainz Mammillaria pennispinosa Krainz ex Shurly