Opuntia riojana Hosseus Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Caryophyllales family Cactaceae genus Tephrocactus species Tephrocactus alexanderi Name Homonyms Opuntia riojana Hosseus ex Backeb. & Knuth Opuntia riojana Hosseus