Fungi, Ascomycetes, Ustilaginales, Uredinales . nced by his first opinion that the ascus arose from the fusion of twoseparate filaments, but it was not modified by his subsequent discovery ofthe true process. Fertilization. In the following year (1895) both de Bans observationsand those of Dangeard were confirmed by Harper, working on the commonmildew Sphaerotheca ffumuli1. Harper saw the development of a uninucleateoogonium and a uninucleate antheridium. He observed the passage of themale nucleus into the oogonium and the fusion there of the sexual fertilization the oogonium unde
Fungi, Ascomycetes, Ustilaginales, Uredinales . nced by his first opinion that the ascus arose from the fusion of twoseparate filaments, but it was not modified by his subsequent discovery ofthe true process. Fertilization. In the following year (1895) both de Bans observationsand those of Dangeard were confirmed by Harper, working on the commonmildew Sphaerotheca ffumuli1. Harper saw the development of a uninucleateoogonium and a uninucleate antheridium. He observed the passage of themale nucleus into the oogonium and the fusion there of the sexual fertilization the oogonium underwent septation, giving rise to a rowof cells of which the penultimate contained two nuclei, and. after these hadfused, developed into the ascus (fig. 9). He thus demonstrated that in thisfungus there is a normal fusion of male and female nuclei, followed by a1 Sphaerotheca ffumuli (DC.) Bar Castaguei Lev. 42 ASCOMYCETES [CH. second fusion in the ascus, and in the following year he recorded the sameprocess in Erysiphe
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectfungi, bookyear1922
