Mammillaria grisea Galeotti Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Caryophyllales family Cactaceae genus Mammillaria species Mammillaria prolifera Name Homonyms Mammillaria grisea Salm-Dyck Mammillaria grisea Galeotti ex C.F.Först. Mammillaria grisea Galeotti