Fungous diseases of plants . racnose of Currants. Cornell Agl. Exp. Sta. Built. 15 : 196-198. , H. Untersuchungen iiber einige Fungi imperfect! und die zuge- horigen Ascomycetemforem. Ill Gloeosporium Ribis (Lib.) Mont, and Desm. Zeitsch. f. Pflanzenkr. 16: 65-83. ph. 3-4. , F. C. An Epidemic of Currant Anthracnose. N. Y. (Geneva) Agl. Exp. Sta. Built. 199: 64-80. 1901. ASCOMYCETES 205 Distribution and occurrence. This anthracnose is a disease wellknown in Europe and America. Periodically since 1884 it has beenmentioned as a destructive fungus to both white and red curr
Fungous diseases of plants . racnose of Currants. Cornell Agl. Exp. Sta. Built. 15 : 196-198. , H. Untersuchungen iiber einige Fungi imperfect! und die zuge- horigen Ascomycetemforem. Ill Gloeosporium Ribis (Lib.) Mont, and Desm. Zeitsch. f. Pflanzenkr. 16: 65-83. ph. 3-4. , F. C. An Epidemic of Currant Anthracnose. N. Y. (Geneva) Agl. Exp. Sta. Built. 199: 64-80. 1901. ASCOMYCETES 205 Distribution and occurrence. This anthracnose is a disease wellknown in Europe and America. Periodically since 1884 it has beenmentioned as a destructive fungus to both white and red currantsin New York. The fungushas also been found uponblack currants and goose-berries, but it has never,apparently, amounted to anepidemic. Among red cur-rants Stewart observed thatPrince Albert and PresidentWilder were practically freefrom injury where FaysProlific and Victoria wereseriously affected. Affected leaves are moreor less covered with smallbrown spots, as shown inFig. 158. When the troubleis serious the leaves turn. wdDowMoDooaoOi Fig. 78. PsEUDOPEZizA Medicaginis:Structural Features. (After Comes) yellow and drop. The fun-gus also occurs on petioles,young canes, fruit stalks, and fruits. It is believed that it maypass the winter on the canes. The fungus. Until 1906 this fungus was known by an im-perfect stage alone, which like that of the bitter rot of the applesubsequently discussed was referred to the genus Gloeosporium,and bore the name Ghvosporijtm Ribis. The Gloeosporial stage(cf. Gloeosporium) is in fact the only stage of the fungus which isproduced upon the growing plant. The pustules or acervuli con-sist of a stromatic portion from which arise numerous conidiophores,bearing elliptical or strongly curved, falcate conidia. These fruit-ing masses rupture the epidermis and the spores escape in a gelat-inous mass. The acervuli are produced very abundantly on bothsurfaces of the leaves but particularly upon the upper spores are commonly 19 X 7 /a, vary
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