76 COMMON WEEDS 



e.g. vetches smother it out. If very plentiful in 

 young clover, the latter may be cut early for hay. 



FIG. 15. Annual Knawel (Scleranthus annuus L.), nat. size, 

 with flower magnified. 



GERANIACE.E 



Three species of Geranium or Crane's-bill commonly 

 occur as weeds of arable land. All are annual or 

 biennial weeds, all flower between the months of May 

 and September, and in all the fruit is extended into 



