Cereus calvus Engelm. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Caryophyllales family Cactaceae genus Pachycereus species Pachycereus pringlei Name Homonyms Cereus calvus Engelm. ex J.M.Coult. Cereus calvus Engelm.