Rosids are a large group of flowering plants that belong to the order Rosales. This diverse group includes many familiar plants, such as roses, peaches, and oak trees. Rosids are characterized by their distinct leaf structures and often produce flowers with five petals. They play a significant role in ecosystems and agriculture. The Rosids can be divided into two main subclasses: Eurosids I and Eurosids II. These subclasses contain various families, including Fabaceae (legumes) and Moraceae (figs and mulberries). Rosids are important for their contributions to food, timber, and ornamental plants, making them vital to human life and the environment.