. Comparative morphology of Fungi. Fungi. AURICULARIALES 545 While the younger probasidia continue developing, the older ones germinate to basidia which remain enucleate for a long time (Fig. 364, 5 and 6, B). When they have reached approximately three-fourths of their final length, the diploid nucleus migrates into them and divides nor- mally into four daughter nuclei which slip out into the basidiospores. In /. Hookeriarum, the sterigmata are of unequal length and elevate the. Fig. 364.—Iola javanetisis. 1 to 6. Development of probasidia. 7. Spherical fructi- fication, Sp, on sporogonium of
. Comparative morphology of Fungi. Fungi. AURICULARIALES 545 While the younger probasidia continue developing, the older ones germinate to basidia which remain enucleate for a long time (Fig. 364, 5 and 6, B). When they have reached approximately three-fourths of their final length, the diploid nucleus migrates into them and divides nor- mally into four daughter nuclei which slip out into the basidiospores. In /. Hookeriarum, the sterigmata are of unequal length and elevate the. Fig. 364.—Iola javanetisis. 1 to 6. Development of probasidia. 7. Spherical fructi- fication, Sp, on sporogonium of moss (natural size). Iola Hookeriarum. 3. Irregular fructification of diplont of moss (natural size). Cystobasidium Lasioboli. 9,10. Germina- tion of selerobasidia, Sc. Saccoblastia ovispora. 11, 12. Development of basidia. 13. Germination of basidiospores. ( X 150; after Giiumann, 1922; Lagerheim, 1898; and Moller, 1895.) spores above the hymenium, while in I. javensis the basidium projects above the gel which only extends to the tops of the probasidia. The basidiospore germinates with a uninucleate secondary spore; further stages of germination and the genesis of the dicaryon are unknown. Perhaps the probasidia, filled with reserve material for the formation of basidia, have an ecological function as well as their biological function. 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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