Mentzelia rhombifolia Nutt. ex Torr. & A.Gray Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Cornales family Loasaceae genus Mentzelia species Mentzelia oligosperma Name Homonyms Mentzelia rhombifolia Nutt. ex Torr. & A.Gray Mentzelia rhombifolia Nutt.