. Our native trees and how to identify them; a popular study of their habits and their peculiarities. Trees. FORM AND STRUCTURE The roots of the deciduous trees of. North America are usuaU}- a modified form of the tap root, often a divided tap root with fibrous rootlets. STEM. The stem is that part of the plant axis \yhich bears the leaves, flowers and fruit, and is the means of communication between them and the root. The stem differs from the root not only in that it is leaf-bearing but its branches are ar- ranged regularl}- and the growing point is at the apex of the branches. A stem increa
. Our native trees and how to identify them; a popular study of their habits and their peculiarities. Trees. FORM AND STRUCTURE The roots of the deciduous trees of. North America are usuaU}- a modified form of the tap root, often a divided tap root with fibrous rootlets. STEM. The stem is that part of the plant axis \yhich bears the leaves, flowers and fruit, and is the means of communication between them and the root. The stem differs from the root not only in that it is leaf-bearing but its branches are ar- ranged regularl}- and the growing point is at the apex of the branches. A stem increases in length by the growth of a terminal bud and its branches normally originate from buds. The points on the stem where the leaves appear are called nodes. The parts of the stem between the nodes are called inter- nodes. The angle formed b}' the upper side of a leaf and the stem is called the axil. LEAVES. Leaves are stem-appendages and consist of expansions of the stem tissues. Foliage leaves are usually flat, bi-laterally symmetrical organs, green in color, and presenting a distinct upper and under surface. They are pre-eminently the assimilating organs of the plant ; out of the crude sap under the influence of light and air they elaborate the plant food. A Typical Leaf consists of three parts, the blade, the petiole, and the stipules ; any one of these parts may be wanting. (Fig. 3.) The Blade is the expanded portion of the leaf and the part to which the word leaf is usually applied. The Petiole is the leaf stalk. The Stipules are small leaf-like bodies, borne at the base of the petiole, usually one on each side. These are often united. Frequently 504. Fig. 3.—A Typical 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 Keeler, Harriet L. (Harriet Louise), 1846-1921. New York, C. Scribner's Sons
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1910
