78 DISEASES OF GINSENG. 



formed at the base of the stem or on the root. From these 

 sclerotia, tiny threads of the fungus grow out on which are pro- 

 duced many minute spores. These are scattered by the wind or rain 

 to neighboring plants, and thus the infection is scattered. This 

 fungus apparently thrives only under conditions of excessive 

 moisture. A thorough ventilation of the garden in which this 

 was most distructive, at once put a stop to these ravages. Thor- 

 ough ventilation and drainage are to be recommended in connec- 

 tion with the control of this disease. 



