. Fig. 92.—Plu-agmidium stibcorticatum. i, rose branch and leaves with aecidium stage of fungus ; 2, rose leaf with teleutospores ; 3, teleutospores ; 4, uredospores. Figs, i and 2 nat. size, remainder highly mag. been attacked should be drenched with a solution of sulphate of copper during the winter. Raspberry rust {Phragmidium rubi-idaei, Winter) pro- duces its three stages on the raspberry plant. The aecidium condition appears first on the upper surface of the leaves in the month of June, under the form of greenish-yellow pustules, usually arranged in broken circles. The uredo stage appear

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. Fig. 92.—Plu-agmidium stibcorticatum. i, rose branch and leaves with aecidium stage of fungus ; 2, rose leaf with teleutospores ; 3, teleutospores ; 4, uredospores. Figs, i and 2 nat. size, remainder highly mag. been attacked should be drenched with a solution of sulphate of copper during the winter. Raspberry rust {Phragmidium rubi-idaei, Winter) pro- duces its three stages on the raspberry plant. The aecidium condition appears first on the upper surface of the leaves in the month of June, under the form of greenish-yellow pustules, usually arranged in broken circles. The uredo stage appears next, and differs but little in appearance from the aecidium;

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Keywords: ., bookpublishernewyorkmacmillan, booksubjectplantdis, bookyear1910