WEEDS, AND THE MANAGEMENT OP THEM 



113 



Fie. 143. Charlock, one of 

 the mustards (Sras- 

 sica arvenais). 



.Fig. 145. Mayweed. 



Fie. 146. Mayweed {Anthemis Ootula). From a California specimen. 



Pig. 144. : 

 Com Cockle 

 {Lychnis, or 

 AgroateTnmat 



CKthago). 



Thrives 



mostly in 

 wheat fields. 



Fig. 147. PricHy 

 lettuce {Lactuca 

 Scariola). An- 

 nua! or biennial. 



B 8 



Fig. 148. 

 Milk thistle {Sily 

 bum Mariannm) . 

 A naturalized weed in Call* 

 fornla; annual or biennial. 



Fig. 149. 



Eveuing primrose in seed 



((Enothera biennis'^. 



Fig. 151. 

 Bull or pasture thistle 

 iOnicus lanceolatua). 



