bay laurel, (Laurus nobilis), fragrant evergreen species of the family Lauraceae, the source of the cooking herb bay leaf. Bay laurel is native to the Mediterranean region but now widely cultivated in other regions of the world. In ancient Greece the wreath of honour placed upon the heads of heroes was made from the leaves and branches of bay laurel.
Bay laurel grows 6–18 metres (20–60 feet) tall. The stiff, alternate, oval leaves are dull and leathery and about 7.5–10 cm (3–4 inches) long; the leaf edges are smooth and often wavy. The small and inconspicuous flowers are yellowish or greenish white. The fruit, a green, purple, or blackish drupe, contains one seed.