Bui. 180, Bureau of Plant Industry, U. S. Dept. of Agriculture. 



Plate IX. 



Fig. 1.— Grains of Triticum monococcum; Side, 

 Dorsal, and Ventral Views. 



(Enlarged 8 diameters.) 



Fig. 2.— Grains of Triticum dicoccum dicoccoides; Side, Dorsal, and Ven- 

 tral Views. Notice the Hairy Apex. 



(Enlarged 8 diameters.) 



