•Fig. 59. 



Timothy : (a) grains in the hull, or 

 chaff ; (b) grains removed from the 

 chaff; (c) the same, natural size. 



Kentucky Blue 

 Grass: (a) back 

 view; (b) front view; 



(1) palea; (2) 



rachilla joint. 



•Fig. 61. 



Red Top: (a) whole spikelets ; (b) 

 rated scales of same. 



sepa- 



» 



•Adapted from Farmers' Bulletins 382 and 428. 



101 



