Compound leaves are leaves that are composed of multiple smaller leaflets. They are a type of leaf arrangement found in many plants, including some species of trees, shrubs, and herbs. In Egypt, some of the most common species with compound leaves include the Egyptian Acacia, Egyptian Elm, and Egyptian Privet. Compound leaves are beneficial to plants as they can reduce water loss, provide shade for other leaves, and protect the plant against predators. The arrangement of leaflets in a compound leaf can vary depending on the species, with some having a symmetrical arrangement and others having an irregular arrangement. Compound leaves can be further divided into different types based on their structure, such as pinnate, palmate, and bipinnate.