. Botany for high schools and colleges. Botany. Fig. 309.—Embryos of AUium cepa. I., very young Ptage ; e, 5, cells of suspensor ; a, the single cell constituting the embryo ; a?, an unfertilized germ-cell. //., an older stage, the embryo now two-celled , es, the wall of the embryo sac. III., a still later Much maL'nified.—After Sachs. its last cell becomes transformed by successive fissions into a several-celled surface (/.,Fig. 310) ; by a continuation of the process a many-celled solid body is formed (IL, Fig. 310) ; partitions then arise in the cells parallel to the surface, and the extern
. Botany for high schools and colleges. Botany. Fig. 309.—Embryos of AUium cepa. I., very young Ptage ; e, 5, cells of suspensor ; a, the single cell constituting the embryo ; a?, an unfertilized germ-cell. //., an older stage, the embryo now two-celled , es, the wall of the embryo sac. III., a still later Much maL'nified.—After Sachs. its last cell becomes transformed by successive fissions into a several-celled surface (/.,Fig. 310) ; by a continuation of the process a many-celled solid body is formed (IL, Fig. 310) ; partitions then arise in the cells parallel to the surface, and the external layer of daughter-cells thus formed constitutes the dermatogen or primary epidermis {III.; Fig. 310),. 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 Bessey, Charles Edwin, 1845- [from old catalog]. New York, H. Holt and company
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisher, booksubjectbotany
