Bui. 1074, U. S. Dept. of Agriculture. 
Plate XVI II, 
f 
J 
i 
Flint (A). 
PURPLESTRAW (B). 
Spikes, face and side views, natural size: glumes from lower, central, and upper portions of spike 
natural size; kernels in three positions and in transverse sections, magnified 3 diameters. 
