. Comparative morphology of Fungi. Fungi. 566 COMPARATIVE MORPHOLOGY OF FUNGI In the structure of the uredinium, there exists as great variety as in the covered type. In some genera, as in Puccinia, Uromyces, Phrag- midium and Triphragmium, they are surrounded by a margin of peri- physes or intermingled in the interior with paraphyses; and in Hemileia the stipes are joined together into a fascicle which emerges from the stoma bearing at its tip a small head of urediniospores. Both types of uredinia have one thing in common, that their spores arise (as the aeciospores) as daughter cells of an i
. Comparative morphology of Fungi. Fungi. 566 COMPARATIVE MORPHOLOGY OF FUNGI In the structure of the uredinium, there exists as great variety as in the covered type. In some genera, as in Puccinia, Uromyces, Phrag- midium and Triphragmium, they are surrounded by a margin of peri- physes or intermingled in the interior with paraphyses; and in Hemileia the stipes are joined together into a fascicle which emerges from the stoma bearing at its tip a small head of urediniospores. Both types of uredinia have one thing in common, that their spores arise (as the aeciospores) as daughter cells of an initial cell which divides into the future spore and the stipe cell. Thus their development is entirely homologous to that of the aeciospores, but since their mycelium is binucleate after. 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
