Oenothera micrantha Nutt. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Myrtales family Onagraceae genus Oenothera species Oenothera micrantha Name Homonyms Oenothera micrantha Hornem. ex Spreng. Oenothera micrantha C.Presl Oenothera micrantha Walp. Oenothera micrantha Nutt. ex Torr. & A.Gray, 1840 Oenothera micrantha Hornem. Oenothera micrantha Nutt.