Ornithogalum umbellatum, the garden star-of-Bethlehem, grass lily, nap-at-noon, or eleven-o'clock lady, is a perennial bulbous flowering plant, native throughout most of southern and central Europe, north-western Africa and south-western Asia. In North America, it has escaped its cultivation as a garden ornamental and can be found in many areas.
This plant is perennial with bulbs below ground; the bulb is 15-25 mm long and 18-32 mm diameter. It has six to ten leaves, linear with a white line on upper surface, up to 30 cm long and 8 mm broad, and a scape of 10-30 cm. The flowers group in a corymboseraceme with 6-20 flowers, and are white with a green stripe outside.[3][4]