There is often no clear anatomical distinction between leaf and stem. The crown is the junction of the root and stem. A shoot is a stem with leaves. Trees are shrubs are perennials. Annual plants can usually herbaceous.
Stipules can be glandular, leafy, spiny, or scale-like.
In many cases, the stipules fall off shortly after the leaf expands. Many plants completely lack stipules. For example, the leaves of carnivorous plants are modified into traps. Tendrils are common in vines and used for support. A. Floral Parts.