222 Willow (Salicacece) 



A peculiar American species, about two feet high, 

 very variable. 



Glaucus Willow. Bog Willow. S. discolor, Muhl. 



Leaves, two to five inches long, one to nearly two inches 

 wide, oblong or reverse egg-shape, pointed, unevenly 

 toothed, teeth remote at the base, becoming finer 

 and closer, and disappearing toward the apex. Leaf- 

 stem, one half inch or more in length. 



Found, common in damp grounds from Canada to North 

 Carolina ; seven to fifteen feet high. 



Fig. 106. Prairie Willow. S. hiunilis, Marsh. 



Leaves, reverse lance-shape to oblong, pointed, or the 

 lowest ones reverse egg-shape and obtuse ; edge 

 entire and often slightly rolled under, or " crinkly," 

 very variable. Leaf-stem, distinct. 



Found, common in dry fields ; three to eight feet high. 



Fig. 107. Dwarf Gray Willow. S. trislis, Ait. 



Leaves, one to two inches, crowded, very narrow reverse- 

 lanceolate, tapering to a very short leaf-stem, edge 

 entire and slightly wavy and somewhat rolled under. 

 Apex, pointed or somewhat blunted, under surface 

 often downy. 



Found, common in dry ground, one to one and a hah 

 feet high, downy, with the leaves often clustered at 

 the ends of the branches. 



Fig. 1 08. Silky Willow. Gray Willow. S. sericea, Marsh. 



Leaves, two to three inches long, narrow lance-shape, 

 taper-pointed, finely and evenly toothed, drying 

 black, when young very silky. 



