. The Characeae of America. Fig. Fig. SI- LEAVES.—As the cell which is to form the leaf protrudes from its basilar node, it divides very early into a series of cells which are des- tined to form the nodes, internodes and tip. The cells of the tip of the leaf attain their full size soonest and the disproportion of size in very young leaves is very great. These apical cells of the leaf may always be distinguished by the absence of any formation of nodes ; consequently, they are devoid of bracts, re-. Please note that these images are extracted from scanned page images that may have been dig


. The Characeae of America. Fig. Fig. SI- LEAVES.—As the cell which is to form the leaf protrudes from its basilar node, it divides very early into a series of cells which are des- tined to form the nodes, internodes and tip. The cells of the tip of the leaf attain their full size soonest and the disproportion of size in very young leaves is very great. These apical cells of the leaf may always be distinguished by the absence of any formation of nodes ; consequently, they are devoid of bracts, re-. 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 Allen, Timothy Field, 1837-1902. New York : [s. n. ]


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