Brassica cernua (Thunb.) Matsum. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Brassicales family Brassicaceae genus Brassica species Brassica juncea Name Homonyms Brassica cernua (Thunb.) F.B.Forbes & Hemsl. Brassica cernua (Thunb.) Matsum.