Sisymbrium tomentosum Steven Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Brassicales family Brassicaceae genus Stevenia species Stevenia cheiranthoides Name Homonyms Sisymbrium tomentosum Romanczuk Sisymbrium tomentosum Steven ex DC. Sisymbrium tomentosum Steven