Introduction to structural and systematic botany, and vegetable physiology, : being a 5th and revedof the Botanical text-book, illustrated with over thirteen hundred woodcuts . ved the technical name ofEndophlceuai (literally inner bark). In most Avoody stems theexterior part of the bark, in Avhich no woody tissue occurs, is earlydistinguishable into tAvo parts, an inner and an outer. The former is EXOGENOUS STRUCTURE. 121 216. The Cellular Envelope, or Green Layer (Fig. 191, g), also called,from its intermediate position, the Mesophloeum. This is com-posed of loose parenchyma, with thin walls
Introduction to structural and systematic botany, and vegetable physiology, : being a 5th and revedof the Botanical text-book, illustrated with over thirteen hundred woodcuts . ved the technical name ofEndophlceuai (literally inner bark). In most Avoody stems theexterior part of the bark, in Avhich no woody tissue occurs, is earlydistinguishable into tAvo parts, an inner and an outer. The former is EXOGENOUS STRUCTURE. 121 216. The Cellular Envelope, or Green Layer (Fig. 191, g), also called,from its intermediate position, the Mesophloeum. This is com-posed of loose parenchyma, with thin walls, much like the greenpulp of leaves, and containing an equal abundance of is the only part of the bark that retains a green color. In woodysteins this is soon covered with 217. The Corky Envelope, or Epiphlosum (Fig. 191, b), whichgives to the twigs of trees and shrubs the hue peculiar to each spe-cies, generally some shade of ash-color or brown, or occasionally ofmuch more vivid tints. It is this tissue, which, taking an unusualdevelopment, forms the cork of the Cork-Oak, and those corky ex-pansions of the bark which are so conspicuous on the branches of. Wmmm r? o m
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Keywords: ., bookauthorgra, bookcentury1800, bookdecade1860, booksubjectbotany
