. Morphology of angiosperms (Morphology of spermatophytes. Part II). Angiosperms; Plant morphology. THE ENDOSPERM 175 relative size of the chambers depends upon the position of the dividing nucleus (Fig. 71). Among Monocotyledons, the endosperm of Sagittarla (Schaffner18) develops rapidly in the micropylar chamber into a walled tissue, the endosperm nucleus of the antipodal chamber enlarging much but not dividing for a long time, when two or three nuclei may be formed, all of them increasing greatly (Fig. 79). Practically the same thing occurs in Limno- charis (Hall 50), but the nucleus of the
. Morphology of angiosperms (Morphology of spermatophytes. Part II). Angiosperms; Plant morphology. THE ENDOSPERM 175 relative size of the chambers depends upon the position of the dividing nucleus (Fig. 71). Among Monocotyledons, the endosperm of Sagittarla (Schaffner18) develops rapidly in the micropylar chamber into a walled tissue, the endosperm nucleus of the antipodal chamber enlarging much but not dividing for a long time, when two or three nuclei may be formed, all of them increasing greatly (Fig. 79). Practically the same thing occurs in Limno- charis (Hall 50), but the nucleus of the antipodal chamber en- larges without dividing. In Euppia rostellata (Murbeck5S) a. Fig. 19.—Sagittaria variabilis. A, two nuclei of endosperm separated by wall: a, an- tipodal, x 200 ; J3, compact endosperm tissue developed from upper cell, the lower merely growing large without dividing ; 108.—After Schaffner.' wall is formed at the first division of the endosperm nucleus, the antipodal chamber remaining small and with undividing nucleus, but a large number of free nuclei being formed in the micro-. 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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