I.] 



SALICACE^:. 



215 



N.B. Both staminate and pistillate flowers are borne 

 in catkins, each flower in the axil of a minute scale-like 

 bracteole. The flowers are destitute of a perianth in 

 Willow (Salix\ but in Poplar {Populus} a small perianth 

 is present. 



FIG. 156. Male flower 

 of Willow. 



FIG. 157. Female 

 flower of same. 



FIG. 158. Seed of 

 same. 



OBSERVE the i -celled ovary, parietal placentation, and 

 the downy aril of the seeds in the Type. 



Cuttings of Willow throw out adventitious roots with 

 great freedom, and are consequently easily propagated. 

 In this way the Weeping Willow, of which only pistillate 

 trees are in cultivation, has been widely distributed. It 

 is supposed that all the individuals of this Willow have 

 originated from a single parent tree. 



The twigs of several species of Willow (Osiers) are used 

 in basket-making, and from the wood of the Sallow char- 

 coal is chiefly prepared. 



