. The anatomy of woody plants. Botany -- Anatomy. FIG. 95.—Epidermis of the Urticaceae. Explanation in the text of xerophytic habit. Here the epidermis, which in the young con- dition consists of a single stratum, as the leaf matures becomes divided into several stories of cells, all characterized, like the epider- mis from which they are derived, by the absence of chloroplastids. Another feature which especially distinguishes the epidermal structures of the Urticaceae and Acanthaceae is the presence of deposits of carbonate of lime, generally in the form of acinose masses supported on a pedun
. The anatomy of woody plants. Botany -- Anatomy. FIG. 95.—Epidermis of the Urticaceae. Explanation in the text of xerophytic habit. Here the epidermis, which in the young con- dition consists of a single stratum, as the leaf matures becomes divided into several stories of cells, all characterized, like the epider- mis from which they are derived, by the absence of chloroplastids. Another feature which especially distinguishes the epidermal structures of the Urticaceae and Acanthaceae is the presence of deposits of carbonate of lime, generally in the form of acinose masses supported on a peduncle from one side of the cell. In urticaceous leaves which are mesophytic in their environment, such as the nettle or hemp, the structures under discussion, known as cystoliths, are found in the outermost cells of the plant—that is,. 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 Jeffrey, Edward C. (Edward Charles), b. 1866. Chicago, Ill. , The University of Chicago Press
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