Order Casuarinales is a scientific classification that refers to a group of trees and shrubs, commonly known as she-oaks or ironwoods. Some commonly used synonyms for this order include Casuarinanae, Casuarineae, and Casuarinaceae. These plants are native to Australia, Southeast Asia, and the Pacific regions and are often used for reforestation and erosion control due to their tolerance for drought and salt. The order is characterized by its unique leaves, which are small and reduced to scales, and its cone-like fruit. Despite being gymnosperms, they are often referred to as angiosperms due to their flower-like fruit.