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

Family: Onagraceae

tufted evening primrose, more...large white desert primrose, tufted evening-primrose (es: flor de san juan)

[Oenothera caespitosa var. marginata (Nutt. ex Hook. & Arn.) Munz, moreOenothera cespitosa ssp. marginata (Nutt. ex Hook. & Arn.) Munz [orthographic variant], Oenothera cespitosa var. marginata (Nutt. ex Hook. & Arn.) Munz [orthographic variant]]