Oenothera ×chicaginensis de Vries Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Myrtales family Onagraceae genus Oenothera species Oenothera chicaginensis Name Homonyms Oenothera ×chicaginensis de Vries ex Renner & R.E.Cleland Oenothera ×chicaginensis de Vries