Leaves are essential organs responsible for the capture of sunlight and the powering of photosynthesis, with their morphology being an important branch of plant biology. The anatomy, form, venation patterns, and structural features of leaves within species will be the topics covered in this session. Specialists will present how environmental stresses including light, water, and temperature influence leaf structure and function. Case studies will illustrate specialized types, such as needle-shaped leaves in conifers, succulent leaves in desiccation-tolerant plants, and floating leaves in aquatic plants. Microscopy and imaging technologies will uncover the microscopic structures that facilitate gas exchange and light interception. The role of leaves in transpiration, defense, and sensing environmental factors will also be covered. Through the study of leaf morphology, this session will bridge basic plant physiology with ecological adaptation and crop improvement.