Fruits that grow in warm regions, and have a firm rind and a pulpy flesh.
Citrus plants are typically evergreen trees or shrubs with glossy oval-shaped leaves; many species have thorns. The flowers are usually white with five petals and are very fragrant. The fruits are a type of modified berry known as a hesperidium, and the flesh is divided into segments packed with tiny juice-filled vesicles. The peel, or rind, of the fruits is leathery and studded with oil glands.
Examples of citrus fruits are:
oranges, grapefruits, tangerines, lemons, limes, kumquats, citrons, tengelows, and ugli fruit.