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



PLATE XXVIII. 





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CURRELL (A). 



Poole (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 section, magnified 3 diameters. 



