. Botany for high schools and colleges. Botany. MTX0MYCETE8. 209 into a large number of minute rounded bodies, the spores, each of which is provided with a cell-wall. This latter is called the spore-bearing stage, or simply the fructification of the organisms. 275.—When placed under proper conditions of moisture. Pig. 141.—Futigo varians (^^thalvwm septicum of Pr.). a spore; 6, c, Bpore-case- rupturing and permitting the protoplasmic contents to escape; of, roimded maps of naked protoplasm escaped from the spore-case; e, /, ciliated ewarm-spore or zoospore stage; g^ A, i, h, l^ amoeba stage; m
. Botany for high schools and colleges. Botany. MTX0MYCETE8. 209 into a large number of minute rounded bodies, the spores, each of which is provided with a cell-wall. This latter is called the spore-bearing stage, or simply the fructification of the organisms. 275.—When placed under proper conditions of moisture. Pig. 141.—Futigo varians (^^thalvwm septicum of Pr.). a spore; 6, c, Bpore-case- rupturing and permitting the protoplasmic contents to escape; of, roimded maps of naked protoplasm escaped from the spore-case; e, /, ciliated ewarm-spore or zoospore stage; g^ A, i, h, l^ amoeba stage; m, young Plasmodium.—After Prantl. and temperature, the spores burst their walls, and the im- prisoned protoplasm in each escapes and soon becomes a motile, nucleated mass, provided with a cilium, or having an amoeboid form ; in this stage (called the swarm-spore) it repeatedly divides by simple fission (Pig. 142). After a day or two, the swarm-spores, now destitute of cilia, begin the reverse process of coales- cing, two or more of them fusing into cH^Afdr^Z'^^c^for^l a comm6n mass; the process may If^^SyrSnae^goSrSio',;' continue until a new plasmodium is x 390.—After De Bary. formed, differing from the first one mentioned only in size (Fig. 141, a to m, and Fig. 143). (See Note on page 49.) 276.—The classification of the Myxomycetes is mainly based upon the fructification, which usually consists of 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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