. The elements of botany for beginners and for schools. Botany. they press upon each other and become wedge-shaped in the cross sec- tion ; and they continue to grow from the outside, next the bark, so that they become very thin wedges or plates. Between the plates or wedges are very thin plates (in cross section lines) of much compressed cellular tissue, which connect the pith with the bark. The plan of a one-year-old woody stem of this kind is exhibited in the figures, which are essentially diagrams. 429. When such a stem grows on from year to year, it adds annually a Pig. 474. Short piece o
. The elements of botany for beginners and for schools. Botany. they press upon each other and become wedge-shaped in the cross sec- tion ; and they continue to grow from the outside, next the bark, so that they become very thin wedges or plates. Between the plates or wedges are very thin plates (in cross section lines) of much compressed cellular tissue, which connect the pith with the bark. The plan of a one-year-old woody stem of this kind is exhibited in the figures, which are essentially diagrams. 429. When such a stem grows on from year to year, it adds annually a Pig. 474. Short piece of stem of Flax, magnified, showing the bark, wood, and pith in a cross section. Fig. 475. Diagram of a cross section of a very young exogenous stem, showing six woody bundles or wedges. 476. Same later, with wedges increased to twelve. 477. Still later, the wedges tilling the space, separated only by the thin lines, or medullary rays, ruDuing from pith to 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 Gray, Asa, 1810-1888. New York : American Book Company
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbotany, bookyear1887
