. Beginners' botany. Botany. I30 BEGINNERS' BOTANY. Fig. 169. — Tendril, to show where the coil is changed. distinguished from stem tendrils by their irregidar or indefinite position as well as by their mode of growth. Tendril climbers. — A slender coiling part that serves to hold a climbing plant to a support is known as a tendril. The free end swings or curves until it strikes some object, when it attaches itself and then coils and draws the plant close to the support. The spring of the coil also allows the plant to move i^i the wind, thereby enabling the plant to maintain its hold. Slowly p
. Beginners' botany. Botany. I30 BEGINNERS' BOTANY. Fig. 169. — Tendril, to show where the coil is changed. distinguished from stem tendrils by their irregidar or indefinite position as well as by their mode of growth. Tendril climbers. — A slender coiling part that serves to hold a climbing plant to a support is known as a tendril. The free end swings or curves until it strikes some object, when it attaches itself and then coils and draws the plant close to the support. The spring of the coil also allows the plant to move i^i the wind, thereby enabling the plant to maintain its hold. Slowly pull a well-matured tendril from its support, and note how strongly it holds on. Watch the tendrils in a wind-storm. Usually the tendril attaches to the support by coiling about it, but the Virginia creeper and Boston ivy (Fig. 170) attach to walls by means of disks .-. , on the ends of the tendrils. Since both ends of the tendril are fixed, when it iinds a support, the coil- ing would tend to twist it in two. It will be found, how- ever, that the tendril coils in dijferent di- rections in different parts of its length, ing an old and stretched-out tendril, the change of direction in the coil occurred at a. In long tendrils of cucumbers and melons there may be several changes of direction. Tendrils may represent either branches or leaves. In the. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bailey, L. H. (Liberty Hyde), 1858-1954. New York, The Macmillan company
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