Opuntia covillei subsp. piercei (Fosberg) Munz Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Caryophyllales family Cactaceae genus Opuntia species Opuntia littoralis Name Homonyms Opuntia covillei var. piercei (Fosberg) Munz Opuntia covillei subsp. piercei (Fosberg) Munz