Sisymbrium pygmaeum Nutt. ex Torr. & A.Gray Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Brassicales family Brassicaceae genus Sisymbrium species Sisymbrium linifolium Name Homonyms Sisymbrium pygmaeum Nutt. Sisymbrium pygmaeum Nutt. ex Torr. & A.Gray Sisymbrium pygmaeum (Adams) Trautv.