Checkered Lily - Fritillaria meleagris

The flower has a chequered pattern in shades of purple, or is sometimes pure white.[8] It flowers from March to May and grows between 15–40 cm (6–16 in) in height. The plant has a button-shaped bulb, about 2 cm in diameter, containing poisonous alkaloids. It grows in grasslands in damp soils and river meadows at altitudes up to 800 m.