. . . . "Magnoliopsida" . . "Oenothera" . . . "(A. Nelson and J.F. Macbr.) W.L. Wagner, et al." . "St. Anthony Dunes Evening Primrose" . "Magnoliophyta" . "Myrtales" . "Oenothera psammophila" . . . . "Plantae" . "Onagraceae" . . "Oenothera psammophila (A. Nelson and J.F. Macbr.) W.L. Wagner, et al." . .