. Comparative morphology of Fungi. Fungi. #|lll||f| 8 â â ';;:?»/?' 11. f \ Pg 10 Fig. 58.âPilobolus crystallinus. 1. Young sporangium. 2. Mature. 3. Showing protoplasm in young sporangium. 4. Beginning of vacuoles which later form the cleavage zone of the columella. 5. Differentiation of protospores. The wall of the columella will develop on the proximal side of the cleavage zone. 6. Protospores. 7. Nuclear divisions in the protospores, with wall of the columella at left beyond which is the superfluous proto- plasm with nuclei. 8 to 10. Development of sporangiospores from proto spore
. Comparative morphology of Fungi. Fungi. #|lll||f| 8 â â ';;:?»/?' 11. f \ Pg 10 Fig. 58.âPilobolus crystallinus. 1. Young sporangium. 2. Mature. 3. Showing protoplasm in young sporangium. 4. Beginning of vacuoles which later form the cleavage zone of the columella. 5. Differentiation of protospores. The wall of the columella will develop on the proximal side of the cleavage zone. 6. Protospores. 7. Nuclear divisions in the protospores, with wall of the columella at left beyond which is the superfluous proto- plasm with nuclei. 8 to 10. Development of sporangiospores from proto spores. 11. Mature sporangiospores. 12. Germinating sporangiospores. (3 X 53; 4 X 20; 5 to 7 X 500; 8 to 12 X 830; after Brefeld, 1881, and Harper, 1899.) At first most of the cytological processes within the sporangium are the same. The content of the young swelling is divided into a central zone mainly filled by sap and penetrated by a few protoplasmic threads, and into a rich peripheral zone containing most of the nuclei (Fig. 58, 3). The border between the two is differentiated into a foamy protoplasmic layer permeated by narrow flattened vacuoles. These fuse laterally and form between the vacuolate central portion and the protoplasmic spheri- cal cap, a cleavage cavity (Fig. 58, 4); its bordering surfaces are covered. 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
