Erysimum exasperatum J.F.Gmel. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Brassicales family Brassicaceae genus Erysimum species Erysimum caespitosum Name Homonyms Erysimum exasperatum J.F.Gmel. ex DC. Erysimum exasperatum J.F.Gmel.