52 



BEAN CULTURE 



plants it is very readily recognized by the brown 

 or black sunken spots or pits on the stems and 

 cotyledons. In many cases the disease eats through 



-^A. 



SHOWING MILDEW OF LIMA BEAN. 



I. — Blossom of Bean; a, standard, b, keel, enclosing the sta- 

 mens and pistol, c, wing-petals. 2.— The same. Wing-petals 

 depressed as by the weight of a bee, causing the style to pro- 

 trude, d. 3. — The same enlarged. Petals and stamens removed, 

 and keel cut open to show the style coiled inside, e, ovary or 

 young pod. 4.— Young pod. after the fall of the blossom, and 

 with the shrivelled style still attached. The mildew is seen at f. 



I and 2 after Gray; 3 and 4 after Sturgis. 



the Stem causing the top to fall over from its own 

 weight. 



When the very base of the stem is attacked the 

 injury may appear to be due to some insect. Where 



