. Plant life [microform]. Botany; Botanique. 44 THE TTORY OP THR PLANTS. il ; \ \l I in great groups of plants closely related by descent to one another. The immense difference in their external shape (which often varies enor- mously even on the same stem) is mainly due to thp relative extent to which the framework is out or not with Hving cell-stufif, or, as it is technically called, cellular tissue. There are two chief ways of arranging the ribs or veins in a leaf, which may be distinguished as the filiger-like and the feather-like methods (in. Please note that these images are extrac


. Plant life [microform]. Botany; Botanique. 44 THE TTORY OP THR PLANTS. il ; \ \l I in great groups of plants closely related by descent to one another. The immense difference in their external shape (which often varies enor- mously even on the same stem) is mainly due to thp relative extent to which the framework is out or not with Hving cell-stufif, or, as it is technically called, cellular tissue. There are two chief ways of arranging the ribs or veins in a leaf, which may be distinguished as the filiger-like and the feather-like methods (in. 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, Grant, 1848-1899. London : Hodder and Stoughton


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