Opuntia barbata var. gracillima K.Brandegee Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Caryophyllales family Cactaceae genus Opuntia species Opuntia polyacantha Name Homonyms Opuntia barbata var. gracillima K.Brandegee ex J.A.Purpus Opuntia barbata var. gracillima K.Brandegee