. Beginners' botany. Botany. 36 BEGINNERS' BOTANY Some plants bear aerial roots, that may propagate the plant or may act as braces. They are often called prop-roots. The roots of Indian corn are familiar (Fig. 38). Many Ecus trees, as the banyan of India, send out roots from their branches; when these roots reach the ground they take hold and become great trunks, thus spreading the top of the parent tree over large areas. The muscadine grape of the Southern states often sends down roots from its stems. The man- grove tree of the tropics grows along seashores and sends down roots from the overh
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. Beginners' botany. Botany. 36 BEGINNERS' BOTANY Some plants bear aerial roots, that may propagate the plant or may act as braces. They are often called prop-roots. The roots of Indian corn are familiar (Fig. 38). Many Ecus trees, as the banyan of India, send out roots from their branches; when these roots reach the ground they take hold and become great trunks, thus spreading the top of the parent tree over large areas. The muscadine grape of the Southern states often sends down roots from its stems. The man- grove tree of the tropics grows along seashores and sends down roots from the overhanging branches (and from the fruits) into the shal- low water, and thereby gradually marches into the sea. The tangled mass behind catches the drift, and soil is formed. Adventitious Roots. — Sometimes roots grow from the stem or other unusual places as the result of some accident to the plant, being located without known method or law. They are called adventitious (chance) roots. Cuttings of the stems of roses, figs, geraniums, and other plants, when planted, send out adventitious roots and form new plants. The ordinary roots, or soil roots, are of course not classed as adventitious roots. The adventitious roots arise on occa- sion, and not as a normal or regular course in the growth of the plant. No two roots are alike; that is, they vary among them- selves as stems and leaves do. Each kind of plant has its.. Fig. 38. — Indian Corn, showing the brace roots at 00.. 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 work.. Bailey, L. H. (Liberty Hyde), 1858-1954. New York, The Macmillan company