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). 



