. Comparative morphology of Fungi. Fungi. ^ â«>â ', .'-^:'&^- Fig. 15.âOlpidiopsis Saprolegniae. 1. The zoospore has formed a membrane and allowed its content to slip into a hypha of the host. 2 to 5. Development of the young protoplast to a zoosporangium. 6, 7. Development of the zygote. 8. Host hypha with 3 empty zoosporangia and 2 hypnospores. (1, S X 1,000; 2 X 890; 3, 6, 7 X 670; 4, 5 X 1,370; after Barrett, 1912.) A few minutes after swarming they come to complete rest and after a short rest period, swim on. If they reach a filament of Saprolegnia, they show some amoeboid move
. Comparative morphology of Fungi. Fungi. ^ â«>â ', .'-^:'&^- Fig. 15.âOlpidiopsis Saprolegniae. 1. The zoospore has formed a membrane and allowed its content to slip into a hypha of the host. 2 to 5. Development of the young protoplast to a zoosporangium. 6, 7. Development of the zygote. 8. Host hypha with 3 empty zoosporangia and 2 hypnospores. (1, S X 1,000; 2 X 890; 3, 6, 7 X 670; 4, 5 X 1,370; after Barrett, 1912.) A few minutes after swarming they come to complete rest and after a short rest period, swim on. If they reach a filament of Saprolegnia, they show some amoeboid movement, and surround themselves with a wall, while the germ tube pierces the wall of the host hypha, into which the uninucleate cell content is ejected (Fig. 15, 1). By streaming, the naked protoplasm may be carried for a distance in the hypha; it grows rapidly, becomes multinucleate, and after two or three days surrounds itself with a wall and becomes a zoosporangium. At maturity several small vacuoles form and these then flow together into a large central vacuole. 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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Keywords: ., bookcentury1900, bookdecade1920, bookpublishern, booksubjectfungi
