. The essentials of botany. Botany. THE GROUPS OF TISSUES, OR TISSUE-SYSTEMS. 59 fundamental system are so disposed that the periphery is harder and firmer than the usually soft interior, although there are many exceptions. This general structure has given rise to the term Hypoderma for those portions of the fundamental system which lie immediately beneath or near to the epidermis. Hypoderma is not a distinctly limited. Fto. 38.—Transverse section of one-year-old stem of Ailanthus. c, epider mis; k, cork-cells; r, inner green cells; between k and r a layer of cells filled with protoplasm, call
. The essentials of botany. Botany. THE GROUPS OF TISSUES, OR TISSUE-SYSTEMS. 59 fundamental system are so disposed that the periphery is harder and firmer than the usually soft interior, although there are many exceptions. This general structure has given rise to the term Hypoderma for those portions of the fundamental system which lie immediately beneath or near to the epidermis. Hypoderma is not a distinctly limited. Fto. 38.—Transverse section of one-year-old stem of Ailanthus. c, epider mis; k, cork-cells; r, inner green cells; between k and r a layer of cells filled with protoplasm, called the phellogen, or pork-cambium. Magnified 350 times. portion—in fact, it is often difficult to say how far it does extend; however, it usually includes several, or even many, layers of cells, or the whole of each of the tissue-masses (, thick-angled, stony, and fibrous tissues, etc.) which immediately underlie the epidermis. 104. Cork.^—^Within the zone which the hypoderma in- cludes there frequently takes place a peculiar development of the young parenchyma, giving rise to layers of dead cells, whose cavities are filled with air only. The walls in. 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 Bessey, Charles E. (Charles Edwin), 1845-1915. New York : Holt
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbotany, bookyear1896
