. Plant life, considered with special references to form and function. Plant physiology. Fig. Fig. Fig. hi.—riiagram of a trans\'erse section of stem of Ih^ris avuit-a. sliu\\iQg outline, and paired \'a&tular bundles. The black is the xyleni bundle : the gray is the phloem bundle- The outer line represents the epidermis ; a circle including the bundles \MaiId mark the limits ot the stele, with its central pith ; the cortex lies between the and stele.—After Nii'geli. Fig. 112.—Diagram of a transverse section of a jialm stem. The epidermis is represented by the outer line : the en


. Plant life, considered with special references to form and function. Plant physiology. Fig. Fig. Fig. hi.—riiagram of a trans\'erse section of stem of Ih^ris avuit-a. sliu\\iQg outline, and paired \'a&tular bundles. The black is the xyleni bundle : the gray is the phloem bundle- The outer line represents the epidermis ; a circle including the bundles \MaiId mark the limits ot the stele, with its central pith ; the cortex lies between the and stele.—After Nii'geli. Fig. 112.—Diagram of a transverse section of a jialm stem. The epidermis is represented by the outer line : the endodermis by the inner one, with the narrow cortex between them; the stele, with numerous bundles scattered through the pith, is within the endodermis.—.After Frank. all cases attains a definite development. This [toint is at the internode which has just reached its full length. The struc- ture of the stem at this point may be designated as \\i primary structure. If a thin section be cut from such an internode,. 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, H. Holt & company


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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectplantphysiology