. Comparative morphology of Fungi. Fungi. Fig. 72.—Basidiobolus ranarum. 1 to 3. A conidium has divided as in Fig. 70 into two halves which behave as gametangia and form a zygospore each. 4. Germinating zygospore. (1 to 3 X 335; 4 X 575; after Eidam, 1887.) conidia germinate with a single germ tube, which in insufficient nourish- ment, ends in a secondary conidium, but under favorable conditions develops to a mycelium with numerous sacs. This is coenocytic when young; after one or two days, however, it forms numerous septa. Finally. Yiq. 73.—Conidiobolus utriculosus. 1. Mycelium with condiopho
. Comparative morphology of Fungi. Fungi. Fig. 72.—Basidiobolus ranarum. 1 to 3. A conidium has divided as in Fig. 70 into two halves which behave as gametangia and form a zygospore each. 4. Germinating zygospore. (1 to 3 X 335; 4 X 575; after Eidam, 1887.) conidia germinate with a single germ tube, which in insufficient nourish- ment, ends in a secondary conidium, but under favorable conditions develops to a mycelium with numerous sacs. This is coenocytic when young; after one or two days, however, it forms numerous septa. Finally. Yiq. 73.—Conidiobolus utriculosus. 1. Mycelium with condiophores. 2. Single coni- diophore. 3. Conidiophore which has discharged its conidium. 4. Copulation of two gametangia. 5. Zygospores. 6. Germination of zygospore with a conidiophore. (1 X 80; 2, 3, 6 X 200; 4, 5 X 150; after Brefeld.) it breaks up and the sacs develop to tubes, each of which grows upward, swells apically and cuts off a conidium (Fig. 73, 1). The septum projects convexly into the conidium. With the further development of the conidium the septum is reversed into the conidiophore and is subsequently differentiated into two lamellae. The conidiophore swells turgidly and. 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 Gäumann, Ernst Albert, 1893-1963; Dodge, Carroll William, 1895-. New York [etc. ] McGraw-Hill Book Company, Inc.
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