74 Trees with Simple Leaves. [A n 



Leaf-stem, short and woolly. 



Leaf, one and a half to four inches long ; commonest 

 length about two inches (Fig. 33, a) ; downy when 

 young, becoming smooth excepting on the upper side 

 of the mid-rib, which is usually woolly. 



Bark of trunk, dark and rough ; branches very brittle at 

 the base and yellowish ; twigs tough and purplish or 

 yellow. 



Found, in Southern New Brunswick and Ontario, and 

 from Northern Vermont southward. Common on 

 low ground, especially in New York and Pennsylvania. 



A small tree, fifteen to twenty feet high ; quite variable 

 in the style of its foliage ; the latest to flower, in May. 



S. amygdalbides, Anders, (sometimes considered a 

 variety of S. nigra) is found on the shores of the Great 

 Lakes and westward. 



ig- 37- Scythe-leaved Willow. S. nigra, var. falcata, Torr. 



Leaves, SIMPLE ; ALTERNATE ; EDGE VERY FINELY SHARP- 

 TOOTHED. 



Outline, long and narrow, often " scythe-shaped." Apex, 

 long, taper-pointed. Base, gradually narrowing and 

 pointed or slightly rounded. 



Leaf-stem, short. Stipules (two small, leaf-like appendages 

 at the base of the leaf-stem), not falling off when 

 young, as in most of the willows ; moon-shaped, finely 

 toothed, wider than long. 



