Tribulus terrestris subsp. medius Engl. Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Zygophyllales family Zygophyllaceae genus Tribulus species Tribulus cistoides Name Homonyms Tribulus terrestris subsp. medius Engl. Tribulus terrestris var. medius Engl.