PLATE 6 
Portions of inoculated leaves showing effects of inoculation with Puccinia glumarum 
tritici. 
A. —Distal portions of leaves of Red Winter spelt (C. I. No. 1772), showing normal 
uredinia, but few and scattered, with leaf tissue abundantly discolored. This con¬ 
dition represents grade 2 of the five gradations in susceptibility to infection by stripe 
rust. 
B. —Distal portions of leaves of Bromus sterilis, showing uredinia normal and 
moderately abundant, with but little discoloration of leaf tissue. This condition 
represents grade 3 of the five gradations in susceptibility to infection by stripe rust. 
C. —Distal portion of leaves of Black Winter emmer, showing uredinia normal and 
abundant, scattered uniformly over surface of leaf, with no discoloration in the early 
stages of infection. This condition represents a grade of 4, or very susceptible, in 
the five gradations in susceptibility to infection by stripe rust. 
