Synonyms recognized by ITIS (bold taxon is currently accepted):

     Oenothera caespitosa ssp. marginata (Nutt. ex Hook. & Arn.) Munz
     Oenothera caespitosa var. marginata (Nutt. ex Hook. & Arn.) Munz
     Oenothera cespitosa ssp. marginata (Nutt. ex Hook. & Arn.) Munz
     Oenothera cespitosa var. marginata (Nutt. ex Hook. & Arn.) Munz

Common Name(s): tufted evening-primrose.

Taxonomic Hierarchy: (ITIS TSN=566061, click for more information and references)

        Kingdom: Plantae
            Subkingdom: Tracheobionta
                Division: Magnoliophyta
                    Class: Magnoliopsida
                        Subclass: Rosidae
                            Order: Myrtales
                                Family: Onagraceae
                                    Genus: Oenothera
                                        Species: Oenothera caespitosa
                                            Subspecies: Oenothera caespitosa ssp. marginata