Casuarina is a genus of trees and shrubs commonly known as she-oaks. These plants are native to Australia, Southeast Asia, and the Pacific Islands. They are characterized by their needle-like leaves and distinctive, woody cones. Casuarina trees are often found in coastal areas and are valued for their ability to withstand harsh conditions, including salt and drought. These trees play an important role in their ecosystems by providing habitat for various wildlife and stabilizing sandy soils. Additionally, Casuarina species are used in reforestation projects and as windbreaks. Their wood is also utilized for furniture and fuel due to its durability.