Oenothera purpurea hort. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Myrtales family Onagraceae genus Oenothera species Oenothera rosea Name Homonyms Oenothera purpurea Lam. Oenothera purpurea Benth. Oenothera purpurea Curtis