. Botany of the living plant. Botany. THE TISSUES OF THE STEM 49 cells will appear long and narrow, with square ends (Fig. 24). Putting together the results of these three sections, the form of the cell as a solid body would be flattened prismatic ; it is placed with. Fig. 36. Diagrams of secondary thickening in stem of Dicotyledon, based on transverse sections of the hypocotyl of Ricinus. A represents the stem before origin of inter- fascicular cambium. B, same after it has been formed. C, after it has produced internally a broad ring of secondary wood, and externally a narrower ring of secon
. Botany of the living plant. Botany. THE TISSUES OF THE STEM 49 cells will appear long and narrow, with square ends (Fig. 24). Putting together the results of these three sections, the form of the cell as a solid body would be flattened prismatic ; it is placed with. Fig. 36. Diagrams of secondary thickening in stem of Dicotyledon, based on transverse sections of the hypocotyl of Ricinus. A represents the stem before origin of inter- fascicular cambium. B, same after it has been formed. C, after it has produced internally a broad ring of secondary wood, and externally a narrower ring of secondary phloem. 2? = primary cortex. Af = pith. ^ = phloem. ;c=primary xylem. 6=bast fibres at periphery of phloem. /c = fascicular cambium. j'c = interfascicular cambium, fh = \yooA of primary bundle. ifh = \\ood developed from inter- fascicular cambium. j/^ = phloem developed from interfascicular cambium. By the intercalation of the secondary tissues the primary bast, b, b, b, is removed some distance from the primary wood x, x. In C the principal medullary rays extend the whole distance through the ring, the secondary rays only part of that distance. (After Sachs.) its pointed ends directed up and down, and its broader faces inwards and outwards. The cells have very thin walls, and plentiful cyto- plasm, with a large nucleus. In fact they show the characters of embryonic tissue. The cells given off from the initial cell, after further division pass over gradually to the mature state, forming 15, B, n. 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 Bower, F. O. (Frederick Orpen), 1855-1948. London, Macmillan
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1919
