7 38 IOWA DEPARTMENT OF AGRICULTURE 



found in imported clover and grass seeds. A third kind (fig. 20, j) has 

 more oval, smooth seeds, some of which are covered by a somewhat flat- 

 tened, finely hairy hull; found in imported clover and grass seeds. 



Stork's-bill seeds (fig. .20, k) are somewhat club shaped, smooth, brown, 

 and often covered by a sharp-pointed, brown, hairy hull; found in clover, 

 alfalfa, and grass seeds; commonest in imported seed. 



natural size.) 



