. Fig. 50. Chrysanthemum Diseases. a. Botrytis blossom rot. healthy and diseased (after Spaulding-), b. ray blight (after Stevens. F. L.), c. chrysanthemum rust (after Smith. R. E.). d. Ure- dospores of Piicciniu chrysanthcmi. e. Cylindrosporium fungus, /. Cylindro- sporium blight {e and f after Halsted).

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Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1920