Ornithogalum umbellatum

Ornithogalum umbellatum (Star-of-Bethlehem, Grass Lily, Nap-at-Noon, Eleven-o'clock Lady), is a perennial bulbous flowering plant, native throughout most of southern and central Europe (north to Austria and Belgium), and in northwestern Africa and southwestern Asia. In North America, it has escaped its cultivation as a garden ornamental and can be found in many areas.