. The anatomy of woody plants. Botany -- Anatomy. i86 THE ANATOMY OF WOODY PLANTS lost. The disappearance of the primitive rays from the bundles of the stem is, in fact, a general feature of organization of the true vine type and is as plainly indicated, for example, by the Ranun- culaceae as by the Vitaceae. It is obvious that, as a result of the considerations elucidated above, the typical vine possesses com- pound rays, but that the primitive rays have usually quite dis- FIG. 139.—Diagram of the organization of the seedling stem of a northern species of Vitis. Very frequently the
. The anatomy of woody plants. Botany -- Anatomy. i86 THE ANATOMY OF WOODY PLANTS lost. The disappearance of the primitive rays from the bundles of the stem is, in fact, a general feature of organization of the true vine type and is as plainly indicated, for example, by the Ranun- culaceae as by the Vitaceae. It is obvious that, as a result of the considerations elucidated above, the typical vine possesses com- pound rays, but that the primitive rays have usually quite dis- FIG. 139.—Diagram of the organization of the seedling stem of a northern species of Vitis. Very frequently the vine type passes almost imperceptibly into that of herbs, as, for example, in the genus Clematis among the Ranunculaceae and the genus Aristolochia belonging to an order of the same name. It is convenient, however, to take up the ap- pearance of the herbaceous type in an exemplification where it is not linked in any way with the habit or conditions of organization found in the case of vines. The genus Potentilla will serve admir- ably in the present connection. To reduce the illustrations to the smallest possible compass, and to make the situation at the same time clearer, a diagrammatic mode of representation will be. 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 Jeffrey, Edward C. (Edward Charles), b. 1866. Chicago, Ill. , The University of Chicago Press
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