Fritillary, the common name of a genus of about 80 species of plants of the lily family that grow in north temperate areas. Fritillaries bear nodding, bell-shaped flowers that are oddly marked in some species. The crown imperial, most widely cultivated, grows to four feet (1.2 m) tall and bears clusters of purplish, orange, or brickred flowers, often checkered in brown or purple.

The checkered lily, or guinea-hen flower, is native to Europe and Asia. It grows to about 18 inches (46 cm) in height. The flowers are checkered with purple or maroon. The leopard lily of the western United States is similar in appearance.

Fritillaries belong to the family Liliaceae. The crown imperial is Fritillaria imperialis; checkered lily, F. meleagris; leopard lily, F. atropurpurea.