Fungi, Ascomycetes, Ustilaginales, Uredinales . two nuclei takes place. Shortly before the septation of the oogonium, vegetative hyphae beginto grow up about the sexual organs, from the stalks of which they mostlyarise as branches, and themselves branch freely. Some of the branches growinwards forming a nutritive layer, the cells of others, as shown by de Bary,become tabular and more or less empty, they secrete a golden yellow 72 PLECTOMYCETES [CH. substance, readily soluble in alcohol, in the form of a thick, brittle constitute the protective sheath (fig. 30 c), by the decay of
Fungi, Ascomycetes, Ustilaginales, Uredinales . two nuclei takes place. Shortly before the septation of the oogonium, vegetative hyphae beginto grow up about the sexual organs, from the stalks of which they mostlyarise as branches, and themselves branch freely. Some of the branches growinwards forming a nutritive layer, the cells of others, as shown by de Bary,become tabular and more or less empty, they secrete a golden yellow 72 PLECTOMYCETES [CH. substance, readily soluble in alcohol, in the form of a thick, brittle constitute the protective sheath (fig. 30 c), by the decay of which,after the disappearance of the nutritive hyphae and later of the ascus walls,the spores are finally set free. The ascospores are spherical or lenticularoften with a sculptured epispore. In most species of Penicillium reproduction takes place almost entirelyby means of the abundant conidia borne in chains on the branched, brush-like conidiophores (fig. 31). Ascocarps are rare, and a detailed study of theirdevelopment has yet to be
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectfungi, bookyear1922
