. Botany for high schools and colleges. Botany. 406 BOTANY. terns are well defined, and include most of the tissues de- scribed in Chapter VI. (page 69 et seq.). The epidermal system consists of one or more layers of epidermal cells, which are frequently much thickened;. Fig. 301.—Diagrammatic croas-sectiona of the stem of Gymnoeperms, A, young stem with the flDro-vascuIar himdlea, fb, widely separated ; p. the phloem ; aj, the xylem ;/5, tissues of the fundamental system : e, epidermis, fi, a similar section of an older stem, the <ambinm layer, c, extended through the fundamental system fr
. Botany for high schools and colleges. Botany. 406 BOTANY. terns are well defined, and include most of the tissues de- scribed in Chapter VI. (page 69 et seq.). The epidermal system consists of one or more layers of epidermal cells, which are frequently much thickened;. Fig. 301.—Diagrammatic croas-sectiona of the stem of Gymnoeperms, A, young stem with the flDro-vascuIar himdlea, fb, widely separated ; p. the phloem ; aj, the xylem ;/5, tissues of the fundamental system : e, epidermis, fi, a similar section of an older stem, the <ambinm layer, c, extended through the fundamental system from bundle to bundle. C section of a three-year-old stem, showing the manner of increase in the xylcm and phlocim ; pc, primary cortex (phloiim) ; «c, secondary cor- tex (phloem); c, cambium layer; sw, secondary wood (xylem); pw, primary wood (xylem); p, pith ; pi, p2, p3, xl, mH, tcS, correepondiug phlogm aud xylem poniona of each year a growth of the bundle. stomata are common, and in general, are quite regularly dis- posed in lines ; the outer surface is occasionally covered with well-developed trichomes ; in general, however, they present tliemselves as rough points, which give a harshness to 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 Bessey, Charles E. (Charles Edwin), 1845-1915. New York : H. Holt
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbotany, bookyear1885
