All leaves show folding during some part of their development but most eventually become flat or only slightly curled. The folding of mature leaves is called ptyxis . The margins of the leaf are curled under. Leaf Modifications Leaves seem to be the most malleable plant organ. They have been modified to function in a wide variety of ways.
Bracts are leaves associated with flowers.
Bracteoles are usually paired in dicots and borne singly in monocots. The leaves found at the first node of a shoot. See stems . See stems . It is similar to a spine, which is a modified stem, leaf, or root.