Mar. 15, 2020

Calylophus clarity.

Here is an unquestioned Oenothera. Among the stamens you can see the pistil, with a stigma having four long lobes. To me this one, Oenothera biennis, or common evening-primrose may be the essential evening primrose. Common almost everywhere, blooming at night and lasting into dew time, and no one questions its provenance.