Tephrocactus setigerus Backeb. & F.M.Knuth Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Caryophyllales family Cactaceae genus Tephrocactus species Tephrocactus weberi Name Homonyms Tephrocactus setigerus Backeb. & F.M.Knuth