PLANT DISEASES. 



FUNGUS ON A LINDEN. 



not usually thread-like. The conspicuous caps of 

 such forms as toadstools are made up of many twisted 

 and interwoven threads, something like the fibers of 

 a rope. 



Food of Fungi. Fungi have no green chlorophyll, 

 which is characteristic of higher plants, and so it is im- 

 possible for them to manufacture their food from sim- 

 ple substances; they must depend, as do animals, upon 

 the elaborated food found in the bodies of animals or 

 higher plants. While parasitic forms obtain their 



