Bui. 1074, U. S. Dept. of Agriculture. 



Plate XVIII. 



V s . V'i 



I 



A 



^IQP™ 



y 



Flint 'A;. 



PURPLESTRAW (B). 



face and Ide views, natural Ize; glumes from lower, central, and upper portions of spike, 

 natural lizo; kernel i in three positions and, in trangvei e sections, magnified 3 diameters, 



