NETTLE TRIBE. 



563 



ceous plant, with narrow, hairy leaves, reddish, brittle 

 stems, and small, hairy powers which grow in clusters in 

 the axils of the leaves. The filaments are curiously 

 jointed and elastic; so that if touched before the expan- 

 sion of the flower, they suddenly spring from their in- 

 curved position and shed their pollen. In rural districts 

 an infusion of this plant is a favourite medicine. FL 

 all the summer. Perennial. 



LtfpULus (Common Hop'}. ' 



3. HUMULUS (Hop). 



1. H. Ltipulus (Common Hop). A beautiful climbing 

 plant, commonly cultivated for the sake of its catkins, 

 which are used to give a bitter flavour to beer, and natu- 

 ralized in many places. Fl. July. Perennial 

 oo2 



