•Fig. 74. 



Red Clover— adulterated : (a) red clover; (b) yel- 

 low trefoil. The clover seeds are more or less 

 triangular; those of trefoil oval, and usually with 

 a distinct projection beside the scar notch. 



♦Fig. 75. 



Alfalfa — adulterated: (a) alfalfa; (bl yellow tre- 

 foil. Alfalfa seeds are more or less kidney shaped 

 or angular, while those of trefoil are more uni- 

 formly oval and have the small projection at the 

 scar more commonly evident. 



•Adapted from Farmers' Bulletin 382. 



Ill 



