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188 



MISSOURI BOTANICAL GARDEN. 





periments were made to prove the parasitism of the fungus, 

 but considering the present state of our knowledge of this 

 very point, we may well consider this fungus one of the very 

 worst, under certain conditions, with which the gardener has 

 to contend. The writer has seen little or no mention of clis- 



causcd by 



b 



Re- 



made 



diseases of this kind, it has seemed advisable to give a rather 

 extended account of the above cases as noted by the writer. 



EXPLANATION OF PLATE. 



Plate 32. — Chrysanthemums 



Above, an early 



stage of the disease in which some flowers are spotted and a very 

 few bear the fruiting fungus. Below, a later stage, in which the 

 fungus is in full fruit. 



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