EXPERIMENT STATION BULLETINS. 



351 



Fig. 118 (109). 



Alfalfa. Lucerne. Medicago saliva L. 

 Perennial from a deep stout root; stem 30-40 

 cm. high, nearly smooth, leaflets three, dentate, 

 varying much in width; flowers bluish purple, 

 rarely yellow or white; pod pubescent twisted 

 into two or three spirals. Placed here not aa 

 a weed but for comparison. 



Fig. 119 (lOS). 



Black Medick. Nonesuch. Mcdicaijo 

 lupulina L. Annual, minutely pubescent mostly 

 prostrate, spreading, 30-60 cm. long; leaflets 

 three, obovate or circular, variously toothed; 

 flowers yellow, fruit in heads, pod curved into a 

 spiral, one-seeded. Introduced from Europe 

 and often found in Micliigan. The seeds are 

 not unfrequently used to adulterate those 

 of Alfalfa. 



