. Morphology of angiosperms (Morphology of spermatophytes. Part II). Angiosperms; Plant morphology. B Fig. 29.—A, Canna indica ; axial row of four megaspores, the innermost one beginning to germinate and the other three disintegrating; after Wiegand.™ £, Eichhornia crassipes: portion of nucellus showing four megaspores, the innermost one germi- nating, and the other three, which are not separated by wails, disintegrating; x 1100; after ; from the usual sporophytic mitosis only in the reduced number of chromosomes (Miss Sargant,41 Strasburger,72 Juel88). Not only do the first two div
. Morphology of angiosperms (Morphology of spermatophytes. Part II). Angiosperms; Plant morphology. B Fig. 29.—A, Canna indica ; axial row of four megaspores, the innermost one beginning to germinate and the other three disintegrating; after Wiegand.™ £, Eichhornia crassipes: portion of nucellus showing four megaspores, the innermost one germi- nating, and the other three, which are not separated by wails, disintegrating; x 1100; after ; from the usual sporophytic mitosis only in the reduced number of chromosomes (Miss Sargant,41 Strasburger,72 Juel88). Not only do the first two divisions agree in the various types, but they correspond minutely with the two divisions with which the microspore mother-cell gives rise to the tetrad. That the megaspores do not occur in tetrahedral or bilateral arrange- ment does not involve their morphological nature, for in 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. New York, D. Appleton
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