Erysimum cheiranthoides var. pygmaea Thur. Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Brassicales family Brassicaceae genus Erysimum species Erysimum cheiranthoides Name Homonyms Erysimum cheiranthoides var. pygmaea Rouy & Foucaud