PLATE i 
Bacterium gummisudans on gladiolus 
A. —Early stage of the bacterial blight, showing the water-soaked, horizontal lesions* 
Natural infection. Xi- . 
B. —Artificial inoculation 18 days after inoculation. Photographed by transmitted 
light. Xi. 
C. —Artificial inoculation showing the dry exudate on the lesions. Xi- A, B, 
and C are leaves from “seedling” plants. 
D—Leaves from blooming plants (var. Schwaben) showing general appearance 
in the field. Natural infections. X1/2. 
E.—Leaf from seedling plant (var. Schwaben). Natural infection. Xi. 
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