. Morphology of gymnosperms. Gymnosperms; Plant morphology. 394 MORPHOLOGY OF GYMNOSPERMS before the walls disappear the jacket cells become binucleate, the nuclei dividing mitotically and amitotically. Mitotic divisions may- occur simultaneously in every cell of both layers of the jacket, or every division may be amitotic, or both kinds of division may occur in the same jacket. Amitotic divisions occurring at the upper end of the archegonium might pass easily for fusions. In some jacket cells the. Please note that these images are extracted from scanned page images that may have been digitall
. Morphology of gymnosperms. Gymnosperms; Plant morphology. 394 MORPHOLOGY OF GYMNOSPERMS before the walls disappear the jacket cells become binucleate, the nuclei dividing mitotically and amitotically. Mitotic divisions may- occur simultaneously in every cell of both layers of the jacket, or every division may be amitotic, or both kinds of division may occur in the same jacket. Amitotic divisions occurring at the upper end of the archegonium might pass easily for fusions. In some jacket cells the. 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 Coulter, John Merle, 1851-1928; Chamberlain, Charles Joseph, b. 1863; Coulter, John Merle, 1851-1928. Morphology of spermatophytes. Part I. Gymnosperms. Chicago, University of Chicago Press
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