Pictured is the single flowered form of Anemone coronaria. The common name is poppy-flowered anemone. The flowers have many mixtures of colors from red, blue, white, and more.
GalleriesFlowers and Shrubs: A
L. H. Bailey Standard Cyclopedia of Horticulture (New York, New York: The MacMillan Company, 1917) volume 1, page 285