Opuntia fragilis subsp. denudata Wiegand & Backeb. Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Caryophyllales family Cactaceae genus Opuntia species Opuntia fragilis Name Homonyms Opuntia fragilis var. denudata E.F.Wiegand & Backeb.