302 Gardening 
R.F. Poole, N.J. Expt. Sta. 
Fic. 170. Bean pods infected with bean anthracnose. The diseased portions 
,_often extend through the walls of the pod and affect the seed within. 
ings produced. These somewhat rounded but irregularly 
shaped enlargements may appear on leaves, stalk, tassel, 
or ears. At first, the outside of these swellings is glis- 
tening white, but later the mass breaks up into black 
powdery substances, largely composed of minute spores. 
These spores live over winter and lead to the infection of 
growing plants the next year. The filaments of the fun- 
gus gain entrance anywhere in the growing parts, espe- 
cially through wounds. The fungus grows rapidly, and 
the parts in which it feeds become enlarged and greatly 
distorted. The effect of this fungus differs very much 
from that of such a fungus as the downy mildew of the 
cucumber, which kills tissues and does not first cause 
them to become enlarged. 
To prevent the spread of this smut, do not allow any 
pustules to mature and shed their spores. Cut out the 
