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part of the complete leaf. Generally leafy, one or two pieces, located at the base of the leaf handle and stem, usually to protect the young leaves and buds. The shape and size of the leaves vary according to the type, such as the pea's leaves are larger leafy, the pear tree's leaves are line-shaped, the leaves of the artichokes and sourdents become thorns, and the leaves of the eucalyptus become storks, which surround the base of the stem section, called the leaves. The existence of leaves is mostly temporary, generally or early or late self-shedding, only a few plant leaves in the life of the plant to retain. The leaves are mainly found in gem leaf plants; the original aquatic plants in single-leaf plants, such as eye vegetables, have toes; and the naked plants are scarce. During the evolution of the bee plant, the leaves gradually degraded, and the vast majority of the co-petal plants lacked the leaves.