. Elementary botany. Botany. Fig 152. Fertilized egg of cedogonium after a period of rest escaping from the wall of the oogonium, and di\iding into the four zoospores. (After Juranjd.) produce the vegetative thread of cedogonium directly, hut first forms four zoospores, each of which is then capable of developing into the thread. On the other hand we found that in spirogyra the zygo- spore develops directly into the thread form of the plant. 330. Position of cedo- gonium.—CEdogonium is one of the true thread-like algae, green in color, and the threads are divided into distinct cells. It, along
. Elementary botany. Botany. Fig 152. Fertilized egg of cedogonium after a period of rest escaping from the wall of the oogonium, and di\iding into the four zoospores. (After Juranjd.) produce the vegetative thread of cedogonium directly, hut first forms four zoospores, each of which is then capable of developing into the thread. On the other hand we found that in spirogyra the zygo- spore develops directly into the thread form of the plant. 330. Position of cedo- gonium.—CEdogonium is one of the true thread-like algae, green in color, and the threads are divided into distinct cells. It, along with many relatives, was once placed in the old genus conferva. These are all now placed m the group Confen'oiJio:, that is, the cotifcrz'a-Hke als^cc. p- 321. Relatives of cedogonium.—Many other genera Portion of chajtophora are related to «;dogonium. Some consist of simple showing branchmg. threads, and others of branched threails. An example of the branched forms is fotmd in chcetophora, represented in figures 153, 154. This plaiit grows in quiet pools or in slow-rimning water. It is attached to sticks, rocks, or to larger aquatic plants. Man}' threads spring from the same point of attachment and radiate in all directions. This, together with the branching of the threads, makes a small, compact, greenish, rounded mass, which is Fig. 153- Tuft of ch^to- phora, natural 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 Atkinson, George Francis, 1854-1918. New York : H. Holt
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