14: FAMILIAR FEATURES OP THE ROADSIDE. 



setts. This species has broad, oval, dark-green leaves, 

 sharply and irregularly toothed, which are whitish 

 and downy beneath. The smooth alder {Almis ser- 

 rulatci) is found southward and 

 south westward from Massachu- 

 setts ; it forms dense 

 thickets in Pennsyl- 

 vania and Yirginia 

 on the borders of 

 swamps, and farther 

 south attains a height 

 of thirty-five feet. The 

 leaves are obovate, and 

 green on both sides ; 

 they are usually smooth, 

 but occasionally downy 

 beneath. AJmis ioicana is as 

 common along the roadsides in 

 northern ISTew Hampshire as 

 Alnus serrulida is in southern 

 Pennsylvania. 



The -^villows contribute largely 

 to the beauty of the roadside in 

 spring by their beautiful golden- 

 flecked catkins. The glaucous wil- 

 low {Salix discolor) we will al- 

 ways find hanging over the river's brink and the 



A 



Glaucous Willow Cat- 

 kins : A, sterile iiowers ; 

 B, fertile Iiowers. 



