There were a few rose bushes on a hike at Monte Bello Open Space Preserve in Santa Clara County, California. They are just small little roses on a wild, creeping plant.
California Wild Rose Rosa Californica
Wild rose is one of less than a dozen species of Rose native to California where it occurs in moist sites below 1800 meters mostly west of the Sierra Nevada. The flowers of this species have been used for perfume, jelly, candy, and tea. The hip, or mature fruit rivals oranges for its vitamin C content. Upon removal of the seeds, the small apple-like hips can also be used for making tea or jelly.