. Morphology of gymnosperms. Gymnosperms; Plant morphology. Figs. 293-297.—Pinus Laricio: formation of ventral canal cell; fig. 293, typical division, the ventral canal nucleus beginning to disorganize and the egg nucleus begin- ning to enlarge; X500; fig. 294, disorganizing ventral canal cell; Xsoo; fig. 295, an unusually large spindle in cutting ofiE ventral canal cell, the two nuclei being the same size and showing the same developmental changes; Xsoo; fig. 296, a large ventral canal cell formed in this way; X500; fig. 297, the wall separating the ventral canal cell from the egg has broken.


. Morphology of gymnosperms. Gymnosperms; Plant morphology. Figs. 293-297.—Pinus Laricio: formation of ventral canal cell; fig. 293, typical division, the ventral canal nucleus beginning to disorganize and the egg nucleus begin- ning to enlarge; X500; fig. 294, disorganizing ventral canal cell; Xsoo; fig. 295, an unusually large spindle in cutting ofiE ventral canal cell, the two nuclei being the same size and showing the same developmental changes; Xsoo; fig. 296, a large ventral canal cell formed in this way; X500; fig. 297, the wall separating the ventral canal cell from the egg has , leaving both nuclei free in the cytoplasm of the egg; nv, nucleus of ventral canal cell; no, nucleus of egg; X100.—After Chamber- lain (si).. 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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