Oenothera biennis var. cruciata de Vries Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Myrtales family Onagraceae genus Oenothera species Oenothera biennis Name Homonyms Oenothera biennis var. cruciata de Vries Oenothera biennis var. cruciata (Nutt. ex G.Don) Torr. & A.Gray Oenothera biennis var. cruciata Kleb.