. Botany, an elementary text for schools. Botany. ("IIAITKK' XXXV STRUCTURE OF LEAVES 433. Besides the framework or system of veins ft)unti in l)lades of all leaves, there is a soft tissnt* (4()S) caih-il mesophyll (»r leaf-parenchyma, and an epidermis wliich eovei's the entire onlside part. 434. MESOPHYLL.—The mesoiihyll is not all alike or homogeneous. The upper layer of it is eoniposed (»f elouf^ated eells plaeed perpendicular to the surfaee of the leaf. These are called palisade cells. The rhJoroplnjU grains are most ahuudaiit in fJnm. because they are on the side of the leaf most dir
. Botany, an elementary text for schools. Botany. ("IIAITKK' XXXV STRUCTURE OF LEAVES 433. Besides the framework or system of veins ft)unti in l)lades of all leaves, there is a soft tissnt* (4()S) caih-il mesophyll (»r leaf-parenchyma, and an epidermis wliich eovei's the entire onlside part. 434. MESOPHYLL.—The mesoiihyll is not all alike or homogeneous. The upper layer of it is eoniposed (»f elouf^ated eells plaeed perpendicular to the surfaee of the leaf. These are called palisade cells. The rhJoroplnjU grains are most ahuudaiit in fJnm. because they are on the side of the leaf most directly exposed to the sunli^^ht. Below the palisade cells is llie spongy parenchyma com- posed of cells more or less spherieal in ii-rej,Mdai-ly arranged, and provided with many intercellular air ca\ i- ties. Fig. 411 ; also Fig. 11"). In leaves of some plants exposed to stiMtng light theiv may he umi-e than niie Ia.\er of jialisade cells, as in the Iii(tia-rnlil)er plant and oleander. I\y when gi'own in liright ligiit will de\-e|((p t\V(t such layers of eells, hut in places it may he ,„ ,>„,«-ti»n of ivy Wf. « gn-w I',,1111,1 ;|iili«"<l''''<'ll»; Sueli lilailts as iris and i-. » rryntiil ; »/<, mxuuD-pHri'iu-liynm i •'. In- l,,.».: r «. plant. Wlllcli plimt ol the eijually exposed to snnliu'ht, ii-ually a palisade la\ er lieiH-at li each Jti'j I. 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 Bailey, L. H. (Liberty Hyde), 1858-1954. New York Macmillan
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Keywords: ., bookauthorbai, bookcentury1900, bookdecade1900, booksubjectbotany
