Vines are plants that have a trailing or climbing growth habit. They are great for trellises, arbors, fences, lamp poles and so forth. Some, like the Akebia, climb by twining tendrils that clasp the support structure or other plants. Others, like Clematis and Honeysuckle (Lonicera), have stems or leaf petioles that curl and twine around their support structure. There are also some vines, such as Boston Ivy (Parthenocissus), that cling to structures or other plants with adhesive disks. Any of these will sprawl on the ground if there is nothing to support them and so are sometimes used as groundcovers.