. Outlines of plant life : with special reference to form and function . Botany. FiG, 24. Fig. 25. Fig. 26. Fiu, 24.—An entire plant of Polysiphonia^ showing mode of branching. Natural size. —After Kiitzing. Fig. 25.—Transverse section of one of the branches of Folysipkonia, showing a minute central cell with four large and four small cells surrounding it. Magnified about 50 diam.—From a drawing by Mr. Grant Smith. Fig. 26.—Apex of a branch of Polysiphonia which has nearly ceased growing. Mag- nified about 100 diam.—From a drawing by Miss Rowan. fore, is one of the simplest forms composed of c
. Outlines of plant life : with special reference to form and function . Botany. FiG, 24. Fig. 25. Fig. 26. Fiu, 24.—An entire plant of Polysiphonia^ showing mode of branching. Natural size. —After Kiitzing. Fig. 25.—Transverse section of one of the branches of Folysipkonia, showing a minute central cell with four large and four small cells surrounding it. Magnified about 50 diam.—From a drawing by Mr. Grant Smith. Fig. 26.—Apex of a branch of Polysiphonia which has nearly ceased growing. Mag- nified about 100 diam.—From a drawing by Miss Rowan. fore, is one of the simplest forms composed of cells massed together. 32. Growth.—Growth in length can take place only at the ends of the main axis and its branches, because there each apical cell (fig. 26) produces, by division near its base, the new cells whose later division and enlargement make the mature axes. 33. Color.—In this plant, as in very many of the marine algse, there is present, in addition to the green of the chloro- plasts, a special red coloring matter. To the naked eye, this. 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 Barnes, Charles Reid, 1858-1910. New York : Henry Holt and Company
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1900
