Melocactus viridescens (Torr. & A.Gray) Nutt. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Caryophyllales family Cactaceae genus Ferocactus species Ferocactus viridescens Name Homonyms Melocactus viridescens (Torr. & A.Gray) Nutt. ex Teschem. Melocactus viridescens (Torr. & A.Gray) Nutt. Melocactus viridescens Guiggi