Oenothera deltoides Torr. & Frem.
Engl.: birdcage evening-primrose, dune primrose.
Flower. CA, US. Wild. 1998-03-01.
Flowering plant. CA, US. Wild. 1998-03-01.
Henriette's herbal is one of the oldest and largest herbal medicine sites on the net. It's been online since 1995, and is run by Henriette Kress, a herbalist in Helsinki, Finland.
Plant Healer Magazine: Very relevant to the practitioner.
http://www.henriettes-herb.com - Copyright 1995–2017 Henriette Kress.