Fungi, Ascomycetes, Ustilaginales, Uredinales . Fig. 62. Pyromma conjluens; a. antheridium, trichogyne and oogonium,male and female nuclei collected in the middle of the latter; b. c. fusionof male and female nuclei; after Harper. spread out into the cytoplasm of the beak, suggesting that the solventaction is mainly exerted from the interior of the trichogyne. The openpore now becomes thickened around its margin so that an exceedinglystrong ring unites the antheridium and trichogyne, and they can be bentor turned upon each other without being pulled apart. This arrangementis no doubt necessary
Fungi, Ascomycetes, Ustilaginales, Uredinales . Fig. 62. Pyromma conjluens; a. antheridium, trichogyne and oogonium,male and female nuclei collected in the middle of the latter; b. c. fusionof male and female nuclei; after Harper. spread out into the cytoplasm of the beak, suggesting that the solventaction is mainly exerted from the interior of the trichogyne. The openpore now becomes thickened around its margin so that an exceedinglystrong ring unites the antheridium and trichogyne, and they can be bentor turned upon each other without being pulled apart. This arrangementis no doubt necessary to withstand the strain set up by the flow of nucleifrom the relatively wide cavity of the antheridium through the narrow poreand beak. IV I PEZIZALES 105 While the formation of the pore is in progress the nuclei of the tricho-gyne degenerate, and, by the time that they are completely disorganized, a migration of the male nuclei through the pore begins. Ultimately thecontents of the trichogyne degenerate still further, till the cytoplasm andn
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectfungi, bookyear1922
