. Botany for high schools and colleges. Botany. 336 BOTANY. hyphsB, which produce few or many separable reproductive cells—the spores (Fig. 158). The method of formation of the spores in Mucor Mucedo is as follows : the vertical hy- phse, which are filled with protoplasm, become enlarged at *t nJ the top, and in each a transverse partition forms {A, a, Fig. 159), the portion above the partition {h, Fig. 159) becomes larger, and, at the same time, the transverse partition arches up {B, a, Fig. 159), finally appearing like an extension of the hypha, then called the Columella {0, a, Fig. 159). Th
. Botany for high schools and colleges. Botany. 336 BOTANY. hyphsB, which produce few or many separable reproductive cells—the spores (Fig. 158). The method of formation of the spores in Mucor Mucedo is as follows : the vertical hy- phse, which are filled with protoplasm, become enlarged at *t nJ the top, and in each a transverse partition forms {A, a, Fig. 159), the portion above the partition {h, Fig. 159) becomes larger, and, at the same time, the transverse partition arches up {B, a, Fig. 159), finally appearing like an extension of the hypha, then called the Columella {0, a, Fig. 159). The pro- toplasm in the en- larged terminal cell {b) divides into a large number of minute masses, each of which surrounds itself with a cell- wall ; these little cells are the spores, and the large mother- cell is now a sporangium. In the other Moulds the process is essentially like that. Fig. 158.—Diagram showing the mode of growth of Muc<yr Mucedo. m, the mycelium; «, single sporangium, borne on an aerial erect hypha,—After Prantl. in Mucor Mucedo. In many cases there are sev- eral sporangia formed at the top of the vertical hyphse ; in such cases the latter are branched before the formation of sporan- gia. Another variation from the method as de- scribed above is that in A. 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 E. (Charles Edwin), 1845-1915. New York : H. Holt
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbotany, bookyear1885
