Necrosis of the Grape Vine. 



333 



at any time of the year. Often it is in the winter. A vine may ap- 

 parently be healthy, trimmed and tied up and then fail to put forth 

 shoots ; in other cases, the vine may send out, in the spring, shoots 

 which after a few weeks wither and die; or the collapse may not come 

 until the middle of or late in the summer. 



Photo. Aug. 20, 190S 



Fig. 49. — Adoore's Early (f). Internodes short, no fruit, margins of leaves crimped, 

 som£ of the leaves blanched, two arms entirely dead 



The fungus, like any other plant, develops bodies for reproduction 

 and dissemination. These bodies are called spores, or pycnospores. 

 and although they are much simpler in structure (being composed of 

 a single cell) than a seed they perform the same function for the 

 fungous plant. As long as the grape vine lives there is food for the 



