. Carnegie Institution of Washington publication. STRUCTURE. 67 midrib near the base forms a ridge a centimeter high and to cm. wide, with vertical, parallel sides and rounded summit. The primary veins are but little lower ; the ultimate branches also, especially where they run out into the serrations, stand out like little cords. Thus by a system of underlying rafters the lamina is rendered firm and stiff. In the large leaves of Euryale and the gigantic foliage of Victoria this method of strengthening is carried to a remarkable degree of development. In describing leaf-structure we ma
. Carnegie Institution of Washington publication. STRUCTURE. 67 midrib near the base forms a ridge a centimeter high and to cm. wide, with vertical, parallel sides and rounded summit. The primary veins are but little lower ; the ultimate branches also, especially where they run out into the serrations, stand out like little cords. Thus by a system of underlying rafters the lamina is rendered firm and stiff. In the large leaves of Euryale and the gigantic foliage of Victoria this method of strengthening is carried to a remarkable degree of development. In describing leaf-structure we may speak of (i) the upper epider- mis, (2) the palisade layer, (3) spongy parenchyma, (4) idioblasts, (5) vein- structure, (6) lower epidermis, and (7) external 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 Carnegie Institution of Washington. Washington, Carnegie Institution of Washington
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Keywords: ., bookauthorcarnegie, bookcentury1900, bookdecade1900, bookyear1905
