Pictured is abronia umbellata. The common name of abronia is sand verbena. The umbellata variety has pink flowers that are about a half inch. The plant is native from California seacoasts to Columbia.
GalleriesFlowers and Shrubs: A
L. H. Bailey Standard Cyclopedia of Horticulture (New York, New York: The MacMillan Company, 1917) volume 1, page 176