Introduction to structural and systematic botany, and vegetable physiology, : being a 5th and revedof the Botanical text-book, illustrated with over thirteen hundred woodcuts . re likewise called Dicotyledonous Plants. Sect. V. The Endogenous or Monocotyledonous Stem. 208. Endogens, or Inside-growers, although they have manyhumble representatives in Northern climes, yet only attain their fullcharacteristic devel-opment, and displaytheir noble arbores-cent forms, under atropical sun. YetPalms — the type ofthe class — do ex-tend as far north inthis country as thecoast of North Caro-lina (the nat
Introduction to structural and systematic botany, and vegetable physiology, : being a 5th and revedof the Botanical text-book, illustrated with over thirteen hundred woodcuts . re likewise called Dicotyledonous Plants. Sect. V. The Endogenous or Monocotyledonous Stem. 208. Endogens, or Inside-growers, although they have manyhumble representatives in Northern climes, yet only attain their fullcharacteristic devel-opment, and displaytheir noble arbores-cent forms, under atropical sun. YetPalms — the type ofthe class — do ex-tend as far north inthis country as thecoast of North Caro-lina (the natural lim-it of the Palmetto,Fig. 184) ; while inEurope the Dateand the Chamasropsthrive in the warm-er parts of theEuropean shore ofthe manner of theirgrowth givesthem astrik- VV.,/.Ving appear-ance ; their t jtrunks beingunbranehed, cylindrical columns, rising majestically to the height of from thirtyto one hundred and fifty feet, and crowned at the summit with asimple cluster of peculiar foliage. Then* internal structure is equal-ly different from that of ordinary wood. FIG. 184. The Chamaerops Palmetto, in various stages, and the Yucca M*^m ENDOGENOUS STRUCTURE. 115 204. The stem of an Endogen, as already explained (199), offersno manifest distinction into bark, pith, and wood; and the latter is notcomposed of concentric rings or layers. But it consists of bundles ofwoody and vascular tissue, in the form of fibres or threads, which areimbedded, with little apparent regularity, in cellular tissue; and thewhole is enclosed in an integument, which does not strictly resemblethe bark of an Exogenous plant, inasmuch as it does not increaseby layers, and is never separable from the wood. The fibrousbundles which compose the wood, and which consist of a mass ofwoody fibres surrounding several vessels, are distributed throughoutthe cellular system of the stem, but most abundantly towards thecircumference. Each bundle usually contains all the elements
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Keywords: ., bookauthorgra, bookcentury1800, bookdecade1860, booksubjectbotany
