188 



GEUM URBANUM. 



[CH. XIV 



processes for their removal and form a serious in- 

 convenience to woollen manufacturers, who give them 

 distinctive names. The spread of certain plants from one 

 part of Europe to another has been traced to the 

 commercial carriage of wool. Early in the last century 

 a species of Xanthium was introduced into Wallachia by 

 the Russian army, being carried in the manes of the 

 Cossack horses, which are described as being deformed by 

 the accumulated burrs. 



Herb Bennet (Geum urbanum) is a plant growing to a 

 H 



FIG. 89. 



FRUIT OP Geum urbanum (HERB BENNET). 



Of the two upper figures the right-hand figure shows the doubly bent style. 



In the left-hand figure the part between H and S has broken off : the 



fruit should have been drawn reversed, with the hook H to the 



right. The lower figure shows the bent style more highly magnified. 



0, the ovary. H, the hook. S, the stigma. 



