. How plants grow [microform] : a simple introduction to structural botany with a popular flora, or an arrangement and description of common plants, both wild and cultivated. Botany; Ferns; Botanique; Fougères. 42 llUW PLANTS (iUOW. :| l!l now thrciuls or fil) of wood wiUiiii or amon^' the old. ment of tho wliol»\ Riich stems may well (moii^jh be eallecl insiflf-f/rowfii'Sy because their wood ineieases in amount, as tht-y <,'i-ovv oldei-, by the formation of 114. Moreover, ondo<,'enous stems are apt to make few or no branches. Asparagus is tho only common examj)lo to tho contrary; th
. How plants grow [microform] : a simple introduction to structural botany with a popular flora, or an arrangement and description of common plants, both wild and cultivated. Botany; Ferns; Botanique; Fougères. 42 llUW PLANTS (iUOW. :| l!l now thrciuls or fil) of wood wiUiiii or amon^' the old. ment of tho wliol»\ Riich stems may well (moii^jh be eallecl insiflf-f/rowfii'Sy because their wood ineieases in amount, as tht-y <,'i-ovv oldei-, by the formation of 114. Moreover, ondo<,'enous stems are apt to make few or no branches. Asparagus is tho only common examj)lo to tho contrary; that branduis freely, lint the stalks of Corn Jind other grain, and those ,.-<^;;j;a^ of Lilies (Fig. i, 2) and tlio like, seldom branch until they come tf) ^r'^-i flower ; and Palms are trees of this "(Z^^'M^ sort, with perfectly simple or branch- less trunks, rising like columns, and crowned with a tuft of conspicuous and peculiar foliage, which all comes from the continued giowth of a ter- minal bud. 115. The Exogenous Stem is tho kind we are familiar with in ordi- nary wood. But it niav be observed in tho greater part of our herbs as well. It dilVers from the other , even at tho beginning, by the wood all oi3Cupying a cej'tain part of the stem, and l)y its woody bundles soon appearing to run together into a solid layer. This layer of wood, W'hether much or little, is always situated around a central part, or }^ith, which has no wood in it, being pui-e c< llular tissue, and is itself surrounded by a bark which is mainly or at tirst entirely cellular tissue. So that a slice across an exogenous stem always has a separate cellular part, as bark, on the circumfer- ence, then a ring of wood, and in the centre a pith; as is seen in Fig. 80,. 1/ 7!» Palmi'ttos of various ngos, and a Viicca, j/.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustratio
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Keywords: ., bookauthorgra, bookcentury1800, bookdecade1880, booksubjectbotany
