What is the broad, green part of the leaf called?

A leaf has a blade for photosynthesis, a petiole for attaching to the stem, a midrib for support, veins for water/nutrient transport, stomata for gas exchange, and guard cells for stomata regulation. The blade or lamina is the flat, expanded, green part of a leaf that is responsible for photosynthesis. It is supported by the leaf's main stalk, or petiole, and is typically the part of the leaf that is most visible. The size, shape, and texture of the blade can vary widely among different plant species, and these variations can be important in identifying plants and understanding their adaptation to different environments.