Diseases of plants induced by Diseases of plants induced by cryptogamuc parasites; introduction to the study of pathogenic fungi, slime-fungi, bacteria, and algae. English ed. by William G. Smith diseasesofplants00tubeuoft Year: 1897 SEPTORIA. 477 cultivated jjarslev in Europe ami enemy of tflt-iv in tlie United St; S. armoraciae Sacc. On horse-radish in America. S. consimilis Ell. et Mart, frequents lettuce in America. S. lycopersici Speg. This , originally observed in America, has recently been de- scribed by Briosi and Cavara on tomatoes in Italy. It causes spots on leaves, stems
Diseases of plants induced by Diseases of plants induced by cryptogamuc parasites; introduction to the study of pathogenic fungi, slime-fungi, bacteria, and algae. English ed. by William G. Smith diseasesofplants00tubeuoft Year: 1897 SEPTORIA. 477 cultivated jjarslev in Europe ami enemy of tflt-iv in tlie United St; S. armoraciae Sacc. On horse-radish in America. S. consimilis Ell. et Mart, frequents lettuce in America. S. lycopersici Speg. This , originally observed in America, has recently been de- scribed by Briosi and Cavara on tomatoes in Italy. It causes spots on leaves, stems, and fruits, inflicting thereby con- siilerable loss on cultivators. The following are im- portant on otlier cultivated plants : S. graminum iJesm. causes light spots on leaves of wheat, oats, and grasses. It has been observed to injure the cereal crop in Italy. It is recorded for Uritain and America. S. cannabis (Lasch.). This on leaves of hemp pro- duces spots, which are at first whitish, then yellowish with dark margins. The pycnidia are embedded in the upper side of the leaf. The following species have caused injury to garden plants: S. dianthi Desm. Car- Tiie disease appears on tlie leaves and stems as rounded spots of iiritain. A variety {apii Br. et C'av.) is an •ites. Kio. 297.—ri, Leudur-oboot uf .Spnico, purtlally killed and defoliutc*!. />, Pycnldiu L-niuiv>i>K' froiii till! rind mid llif Iciif-jtcurs {x 6). c, Kuniiiktioii i)f ciinidiii Inside !i iiycnidiiini ( x '.'10). (/, Si«iroN KLTinlniitin' In water. <, S|Hireii K'-'nalniitin); in nutritive gelatine, (.\fter K. Ilartig.) ' Cuvara (»: Pjlami nkrankluili n, in., p. 'J3) regards tliis ami .S*. tritici with its , as forms of a single species ; also Kriksaon (Om 'liijrii HJukilomur a oiUwle I'uzter, 1890). - AtkiiiBoii, ' ('iiriiation DiHcases,' at Anierican .'cx iiiv, Is'
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