. La botanique pour les jeunes et les écoles communes. Comment les plantes poussent, une simple introduction à la botanique structurels. Avec une flore populaire, ou un arrangement et description des plantes communes, à la fois sauvage et cultivée. La botanique, la botanique. Types ET P^ORMS DE FEUILLES. 51 La ligne supérieure sont appelées lohid pennée, fente, parted, ou divisée, selon le cas, et ceux de la rangée inférieure palmately lobées, fente, &c. Le nombre des lobes ou morceaux peuvent aussi être exprimées dans la même phrase. Ainsi, Hepatica a une paire d'environ trois-lohed feuille (Fig. 121) ; l'érable rouge une palmately cinq-fissure de la feuille (Fig. 84), etc.

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. 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. KINDS AND P^ORMS OF LEAVES. 51 the upper row are called pinnately lohid, cleft, parted, or divided, as the case may be, and those of the lower row palmately lobed, cleft, &c. The number of the lobes or pieces may also be expressed in the same phrase. Thus, Hepatica has a pair mately three-lohed leaf (Fig. 121) ; the Red Maple a palmately five-cleft leaf (Fig. 84), and so on. 141. In this way almost everything about the shape and veining of a leaf may be told in very few words. How useful this is, will be seen when we come to study plants to find out their names by the descriptions. 142. All these terms apply as well to the lobes or parts of a leaf, when they are themselves toothed, or lobed, or cleft, &c. And they also apply to the parts of the ' flower, and to any flat body like a leaf. So that the language of Botany, which the student has to learn, does not require so very many technical words as is commonly supposed. 143. Compound Leaves (121) are those which have the blade cut up info two or more separate smaller blades. The separate blades or pieces of a compound leaf are called Leaflets. The leaflets are generally_yom<«c? with the main footstalk, just as that is jointed with the stem, and when the leaf dies the leaflets fall off separately. 144. There are two kinds of com- pound leaves, the pinnate and the palmate. 145. Pinnate leaves have their leaflets arranged along the sides of the main footstalk, as in Fig. 128, 129, 146. Palmate (also called Digitate) leaves bear their leaflets all at the very end of the footstalk ; as in Fig. 131. 147. There are several varieties of pinnate leaves. The principal sorts are: —. Odd-pinnate. 130. Pinnate with a teodrit Abruptly pinnate.. Please note that these images are extracted from scan

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• bookcentury1800
• bookdecade1850
• booksubjectbotany
• bookyear1858