. A manual of poisonous plants, chiefly of eastern North America, with brief notes on economic and medicinal plants, and numerous illustrations. Poisonous plants. Fig. 20. Schizophyta. Shizomycetes. Bacteria with flagellae, 1. Planococcus citrus 2. Pseudomonas Pyocyanea. 3. Pseudomonas syncyanea. 4. "Bacillus typhi. 5. Spirillum comma, 6. Spirillum rubrum. Fig. 1-6x1000; all after Migula. SCHIZOMYCETES Schizomycetes is one of the two classes of the sub-division Schizophyta. All the members of this sub-division are characterized by having no known sexual method of reproduction, multiplying
. A manual of poisonous plants, chiefly of eastern North America, with brief notes on economic and medicinal plants, and numerous illustrations. Poisonous plants. Fig. 20. Schizophyta. Shizomycetes. Bacteria with flagellae, 1. Planococcus citrus 2. Pseudomonas Pyocyanea. 3. Pseudomonas syncyanea. 4. "Bacillus typhi. 5. Spirillum comma, 6. Spirillum rubrum. Fig. 1-6x1000; all after Migula. SCHIZOMYCETES Schizomycetes is one of the two classes of the sub-division Schizophyta. All the members of this sub-division are characterized by having no known sexual method of reproduction, multiplying by means of simple fission or cell division. The bacteria are distinguished from the first, or Schizophyceae, by the absence of the blue-green coloring matter which is characteristic of these forms. The two sub-divisions approach each other very closely at so'rne points, particularly among the branched bacteria. The shape of the bacteria is used as the character in the separation of the families. They are either rod-shaped, and unbranched, spherical, bent, or spiral and straight and branched, and with or without sheath- ing, covering, or membrane. Five families are distinguished by Migula. Some of these contain considerable numbers of bacteria important from their toxigenic properties. Bacteria are among the smallest of living beings, some undoubtedly being so small that they cannot be seen with the highest powers of the microscope. Others are large enough so that they may be seen as minute specks by the naked eye. In other words, they vary from less than 1/10 ju, to 100 jU,. They may be arranged in the case of the rod-shaped forms or bacilli, either singly or in chains. The same is true of the spirilla, or spiral forms. The cocci or spherical forms may be single, in pairs, in regular mass of 4 and multiples of 4, in chains, in irregular clusters, or imbedded in gelatinous mass forming zoogloeae. Multi-. Please note that these images are extracted from scanned page images that
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