PLATE i 
A# r^ tr jp from epidermis of stem of Little Club wheat, C. I. 4066, showing relative 
number of stomata per unit area. 
B. —Strip from epidermis of stem of Marquis wheat, C. I. 3641, showing relative 
number of stomata per unit area. 
C. —Strip from epidermis of stem of Kota wheat, C. I. 5878, showing relative number 
of stomata per unit area. All X 75. 
deficient? 1 ?^ ^ rom pl an t of Haynes Bluestem wheat grown in nitrogen- 
Typical epidermis from plant of the same variety grown in culture supplied 
with excess nitrogen. ^ 
F.—Portions of heads and peduncles of Kota wheat, C. I. 5878, showing solitary 
linear uredmia on peduncle. 5 y 
«?* Heads and peduncles of Little Club wheat, C. I. 4066, showing confluent, 
oblong uredmia. 0 
(412) 
