. Ontario Sessional Papers, 1905, . atches occur on the fruit of gooseberry. Mildew(Sphaerotheca morsuvae). ■ (b) Yellow blisters (Cluster-cups). Gooseberry Cluster-cup (Aeci-dium grossularise). A Key to the Fungus Diseases of the Grape. A. Leaves : — (a) Pale green or yellowish spots on upper surface, and correspondingareas on lower surface covered with a delicate white mildew. Thespots increase, become brown, and the leaf falls. Downy Mildew(Plasmopara viticola). (b) White or greyish-white patches appear on the upper surface of theleaves, later they present a powdery appearance. Pow

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. Ontario Sessional Papers, 1905, . atches occur on the fruit of gooseberry. Mildew(Sphaerotheca morsuvae). ■ (b) Yellow blisters (Cluster-cups). Gooseberry Cluster-cup (Aeci-dium grossularise). A Key to the Fungus Diseases of the Grape. A. Leaves : — (a) Pale green or yellowish spots on upper surface, and correspondingareas on lower surface covered with a delicate white mildew. Thespots increase, become brown, and the leaf falls. Downy Mildew(Plasmopara viticola). (b) White or greyish-white patches appear on the upper surface of theleaves, later they present a powdery appearance. Powdery Mildew(TJncinula spiralis). (c) Small brownish patches appear on the leaves, on which are situat-ed minute black points. Blach Rot (Laestadia bidwellii). (b) Small irregularly scattered, greyish spots bordered by a darkline: the central portion of the spots becoming dry, brown, andbrittle. Anthracnose (Gloeospnrium ampelophagum). B. Buds and Shoots: — (n) Circular and irregular spots on the shoots. Black Rot (Laestadiabidwellii)..

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