Tendrils are twisting, threadlike structures by which true climbers, such as grape vines or cucumber vines, grasp an object for support. Vines with tendrils will climb on their own, without being trained. In some cases, vines will need to be tied to arbours, pergolas, latticework or other structures so that they grow in the desired place.
A modified leaf or branch structure, usually filiform, often coiled like a spring, used for clinging in plants that climb. Tepal A segment of perianth not differentiated into calyx or corolla. e.g. tulip, magnolia.
A curled structure arising from some nodes of the shoot and capable of attaching itself to other portions of the vine or trellis. Trunk The main, upright structure of the vine from which arms, cordons, shoots, and canes arise. Vines may have more than one trunk.