384 DISEASES OF ECONOMIC PLANTS 



Fig. 163. — Alfalfa plant and dodder. After Stewart and others. 



French and Wilson ' : Unlike the ascochyta leaf spot, this 

 disease attacks chiefly green leaves in the upper part of 

 the plant. The spots are circular, 1-3 mm. in diameter, 

 and usually light brown with a narrow border of dark 

 ' Stewart, French and Wilson, I.e. 



