. The anatomy of woody plants. Botany -- Anatomy. FIBROVASCULAR TISSUES: RAYS that the structure of the ray in the twig in C. Fraseri is different from the adult condition, shown in Figs. 58 and 63, for in the younger axis the ray is obviously penetrated by fibers, and these are absent in the adult. The truth of this statement will become still more apparent by reference to Fig. 68, which reproduces the tangential aspect of the wood in a somewhat older branch of the same species. The prominent mass of radial storage tissue in the center is the foliar ray. It is dis- tinctly fibrous and is cons
. The anatomy of woody plants. Botany -- Anatomy. FIBROVASCULAR TISSUES: RAYS that the structure of the ray in the twig in C. Fraseri is different from the adult condition, shown in Figs. 58 and 63, for in the younger axis the ray is obviously penetrated by fibers, and these are absent in the adult. The truth of this statement will become still more apparent by reference to Fig. 68, which reproduces the tangential aspect of the wood in a somewhat older branch of the same species. The prominent mass of radial storage tissue in the center is the foliar ray. It is dis- tinctly fibrous and is consequently still in the condition of aggregation. As the stem thickens the fibers are grad- ually transformed into parenchyma- tous elements more and more like the cells of the ray. Thus it is that the compound ray of C. Fraseri comes into being. It is evident that its early condition is one of aggregation, and that this is followed by a gradual transformation into the compound state by the fusion of the originally separate members of the aggregation. The photographic representations lead likewise to conclusions in harmony with the diagrammatic figures in the case of the diffuse condition of the foliar ray. It will not be necessary to introduce a total general and a partial more detailed view of the twig in this instance, since the topographical relations are practically the same as those shown in the case of C. Fraseri. Fig. 69 illustrates the situation in the diffusion of the foliar ray as exemplified by. FIG. 67.—Portion of Fig. 66 still more highly magni- fied to show organization of the foliar ray. Explanation in the 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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