. Morphology of angiosperms (Morphology of spermatophytes. Part II). Angiosperms; Plant morphology. C Fig. SO.— Ceratophyllum submermm. Development of endosperm and embryo. A, first division of embryo, six cells in endosperm ; x 250 ; M, embryo and endosperm more advanced ; x 250 ; C'-D, entire embryo seen from opposite sides, 0 showing the two cotyledons separate and I) nearly united ; x 50.—After Cases are also known in which more than two chambers are formed in the embryo-sac and followed by ordinary cell-forma- tion. For example, in Ceratophyllum (Strasburger49) at the firs


. Morphology of angiosperms (Morphology of spermatophytes. Part II). Angiosperms; Plant morphology. C Fig. SO.— Ceratophyllum submermm. Development of endosperm and embryo. A, first division of embryo, six cells in endosperm ; x 250 ; M, embryo and endosperm more advanced ; x 250 ; C'-D, entire embryo seen from opposite sides, 0 showing the two cotyledons separate and I) nearly united ; x 50.—After Cases are also known in which more than two chambers are formed in the embryo-sac and followed by ordinary cell-forma- tion. For example, in Ceratophyllum (Strasburger49) at the first division of the primary endosperm nucleus the sac is divided into two approximately equal chambers. The nucleus in the antipodal chamber does not divide again, but at the next division in the mieropylar chamber another wall across the sac. 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. New York, D. Appleton


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