. Class-book of botany [microform] : being outlines of the structure, physiology, and classification of plants : with a flora of the United States and Canada. Botany; Botany; Plants; Plants; Botanique; Botanique; Plantes; Botanique. OF THB VEOETABLl! 0«LL. j., (1) ^Kmidol, like poller, grains, the red snow-pUnt, the cells of l™f .ssue^ etc, varying to oblong, „r l„bed, or stellai ; (2) »L 1 642. The casual forms result from external pres- sure, as of cells crowding against cells, in stems or pith. In this way spher- oidal cells may become cu- bical, 8-sided, 12-sided, etc ; tubiform cells pris
. Class-book of botany [microform] : being outlines of the structure, physiology, and classification of plants : with a flora of the United States and Canada. Botany; Botany; Plants; Plants; Botanique; Botanique; Plantes; Botanique. OF THB VEOETABLl! 0«LL. j., (1) ^Kmidol, like poller, grains, the red snow-pUnt, the cells of l™f .ssue^ etc, varying to oblong, „r l„bed, or stellai ; (2) »L 1 642. The casual forms result from external pres- sure, as of cells crowding against cells, in stems or pith. In this way spher- oidal cells may become cu- bical, 8-sided, 12-sided, etc ; tubiform cells pris- matic, and tabular cells 4- angled, hexagonal, etc., in outline according to th? original pattern. 643. In maoxitudb the plant cell varies from-j-^^ to 5J^ of an inch in diameter; the more common size is about 5^ ^ inch. The cells of elder pith measure '*^«"* 2-Off int^'i: those of pa- a Z' 7r'r''' °^*^' "'^ ''" '"""^'^ "^ '^^ '«y«^« •' tl»e outer one a firm colorless membrane, made oUellulo^e^ the inner a plastic, gelat- inous layer apphed to the outer, and chiefly concerned in ceIl-1 ff and multiplication. This is called the primordial utricle 646. It 18 BEST SEE^. when treated with a weak solution of nitric To^t rre'cir'^^'"' '' ^'"^ '^''-- -'-^^' -"--' -' ^- 647 The cEtL ^.ALL is easily permeated by fluids flowing in and out It must, therefore, be regarded as porous; although it appears perfectly entire even under the highest magnifier. 648. A SECONDARY LAYER is subscqueiiUy added to the outer layer, between it and the primordial utricle, as if to strengthen it. This new iayer ,s seldom entire, but perforated and cleft in a o-roaf. o^ patterns, leaving certain points or parts of the celf-wall still bare r^nd chscernible by their transparency. Hence tbe following varieties 657 Section of the rhizome of Blood-root, a, a. A bundk of wood-cells. The shaded cells conjtaf n the color. Please note that th
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, booksubjectpl
