. Comparative morphology of Fungi. Fungi. PEZIZALES 325 the obligate manner we shall find in the Uredinales. While in the latter the host change is connected with a change of nuclear phase, is condi- tioned in its rhythm by plasmogamy and meiosis, and, besides, usually takes place between two hosts far removed systematically; in Sclerotinia and Claviceps we are dealing with plurivorous forms which have been specialized on seasonal hosts. The economically important representatives of the subgenus Eusclero- tinia, as S. Fuckeliana, S. Libertiana, S. Trifoliorum and the various Sclerotinias on mo
. Comparative morphology of Fungi. Fungi. PEZIZALES 325 the obligate manner we shall find in the Uredinales. While in the latter the host change is connected with a change of nuclear phase, is condi- tioned in its rhythm by plasmogamy and meiosis, and, besides, usually takes place between two hosts far removed systematically; in Sclerotinia and Claviceps we are dealing with plurivorous forms which have been specialized on seasonal hosts. The economically important representatives of the subgenus Eusclero- tinia, as S. Fuckeliana, S. Libertiana, S. Trifoliorum and the various Sclerotinias on monocotyledonous bulbs, in their choice of hosts are much less specialized than those of the subgenus Stromatinia. Thus, S. Fuckeliana is parasitic on the Vine, Ribes, turnips, etc.,S. Libertiana on all sorts of cultivated garden vegetables and *S. Trifoliorum on alfalfa,. 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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