Nigella arvensis Pall. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Ranunculales family Ranunculaceae genus Nigella species Nigella segetalis Name Homonyms Nigella arvensis L. Nigella arvensis Pall. ex M.Bieb. Nigella arvensis Pall.