. Botany for young people and common schools. How plants grow, a simple introduction to structural botany. With a popular flora, or an arrangement and description of common plants, both wild and cultivated. Botany; Botany. 32 HOW PLANTS GEOW YEAR AFTER YEAK. torn of each leaf, which is enlarged or thickened for containing it. These thick leaf-bases, or scales, crowded together, make up the bulb ; all but its very short stem, concealed within, which bears these scales above, and sends down the roots from underneath. Fig. 67 shows one of the leaves of the season, taken off, with its base cut acr
. Botany for young people and common schools. How plants grow, a simple introduction to structural botany. With a popular flora, or an arrangement and description of common plants, both wild and cultivated. Botany; Botany. 32 HOW PLANTS GEOW YEAR AFTER YEAK. torn of each leaf, which is enlarged or thickened for containing it. These thick leaf-bases, or scales, crowded together, make up the bulb ; all but its very short stem, concealed within, which bears these scales above, and sends down the roots from underneath. Fig. 67 shows one of the leaves of the season, taken off, with its base cut across, that the thickness may be seen. After having done its work, the blade dies off, leaving the thick base as a bulb-scale. Every year one or more buds in the centre of the bulb grow, feeding on the food laid up in the scales, and making the stalk of the season, which bears the flowers, as in Fig. 1, 2. 78. An Onion is like a Lily-bulb, only each scale or leaf-base is so wide that it enwraps all within, making coat after Bulb and lower Leaves of a Lily. Leaf, lowerenti culot?. 79. In shrubs and trees a gi'eat quantity of nourii-hment, made the summer before, is stored up in the young wood and bark of the shoots, the trunk, and the roots. Upon this the buds feed the next spring ; and this enables them to develop vigorously, and clothe the naked branches with foliage in a few days ; or with blos- soms immediately following, as in the Horseohestnut; or with blossoms and foliage together, as in Sugar Maple ; or with blossoms before the leaves appear, as in Red Maples and Elms. The rich mucilage of the bark of Slippery Elm, and the sweet spring sap of Maple-trees, belong to this store, deposited in the wood the previous summer, and in spring dissolved and rapidly drawn into the buds, to supply the early and sudden leafing and blossoming. 80. In considering plants, as to " how they grow," it should be noticed that all of them, from the Lily of the field to the tree
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectbotany, bookyear1858
