thorn apple

Annual plant belonging to the nightshade family, native to America and naturalized worldwide. It grows to 2 m/6 ft in northern temperate and subtropical areas and has white or violet trumpet-shaped flowers followed by capsulelike fruits that split to release black seeds. All parts of the plant are poisonous. (Datura stramonium, family Solanaceae.)

The fruit of the hawthorn is also called thorn apple.