. Comparative morphology of Fungi. Fungi. Fig. 366.—Septobasidium albidum. Group of conidia resembling Torula. (X400; after Patouillard, 1913.) Septobasidium pseudopedicellatum. 2. Section of upper portion of crust (X360). 3, 4. Germinating basidiospores. (X720; after Coker, 1920.) Septo- basidium pedicellatum. 5. Development and germination of probasidia. (X260; after Patouillard, 1892.) The more highly differentiated group of species produce a layer of tissue next the substrate, from which rise hyphal pillars which support the outer layer bearing the hymenium (Fig. 365). S. cirratum forms a
. Comparative morphology of Fungi. Fungi. Fig. 366.—Septobasidium albidum. Group of conidia resembling Torula. (X400; after Patouillard, 1913.) Septobasidium pseudopedicellatum. 2. Section of upper portion of crust (X360). 3, 4. Germinating basidiospores. (X720; after Coker, 1920.) Septo- basidium pedicellatum. 5. Development and germination of probasidia. (X260; after Patouillard, 1892.) The more highly differentiated group of species produce a layer of tissue next the substrate, from which rise hyphal pillars which support the outer layer bearing the hymenium (Fig. 365). S. cirratum forms a transition from the primitive group, since the pillars are of variable diam- eter and composed of loosely intertwined hyphae. In many species of this group the wall of the probasidium is thickened, and in S. castaneum also slightly colored, hence the zeugites might be called sclerobasidia (Fig. 366, 2 and 5). The basidiospores germinate directly to secondary spores, rarely to mycelia. In S. pseudopedicellatum and S. retiforme, they divide into as many as eight daughter cells before germination (Fig. 366,3 and 4). These cells produce elongate sprout cells (Coker, 1920; C. W. Dodge, unpublished observations). In S. retiforme the basidium falls from the probasidium. 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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