. Plant anatomy from the standpoint of the development and functions of the tissues, and handbook of micro-technic. Plant anatomy. io8 TRANSPORT OF WATER AND SOIL SOLUTES But in one noteworthy detail they are very unlike wood fibers, namely, their walls have numerous and large bordered pits, and it is this that fits them for water highways (Fig. 51). The bordered pit is a thin area in the wall with an overhang- ing border. The thin place is clearly to facilitate the passage of water and solutes, and the border serves the double purpose. Fig. 52.—Diagrammatic representation of a block of pine w
. Plant anatomy from the standpoint of the development and functions of the tissues, and handbook of micro-technic. Plant anatomy. io8 TRANSPORT OF WATER AND SOIL SOLUTES But in one noteworthy detail they are very unlike wood fibers, namely, their walls have numerous and large bordered pits, and it is this that fits them for water highways (Fig. 51). The bordered pit is a thin area in the wall with an overhang- ing border. The thin place is clearly to facilitate the passage of water and solutes, and the border serves the double purpose. Fig. 52.—Diagrammatic representation of a block of pine wood highly magnified, a. Early growth; b, late growth; c, intercellular space; d, bordered pit in tangential wall of late growth; jM,/and e, bordered pit in radial wall of early growth from different points of view; h, row of medullary cells for carrying food; g, row of medullary ray cells for carrying water; k, thin place in radial wall of ray cells that carry 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 Stevens, William Chase, 1861-. Philadelphia, P. Blakiston's Son
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectplantanatomy, bookyea
