PLATE s 
Portions of inoculated leaves showing uredinia few or minute, usually surrounded 
by areas of dead or discolored tissue. This condition represents grade i in the five 
gradations of susceptibility to infection by stripe rust. 
A. —Distal portions of leaves of Sonora wheat (C. I. No. 3036). 
B. —Distal portions of leaves of Einkom (C. I. No. 2973) 18 days after inoculation. 
