Description of Native Trees 



60. White Willow. Yellow Willow. (Salix alba, with 

 van vitellina.) 



Leaf : 3-4', simple, alternate, serrate, narrow, apex tapering, 

 white silky hairy both sides, more beneath. The willow seen in 

 early spring with bright yellow branches is a variety (vitellina) 

 with shorter, broader leaves. 



61. Weeping Willow. (Salix Babylonica.) 

 Leaf : 5', simple, alternate, serrate, long and narrow ; tree 

 recognized by long, drooping branches. (PI. X.) 



62. Long-leaved Willow. Sandbar Willow. (Salix 



longifolia.) 

 Leaf : 2'-6', simple, alternate, minutely serrate, Y^-Yz broad, 

 very silky when young ; along river-banks ; low tree and shrub 



63. Bebb Willow. Long-beaked Willow. (Salix rostrata.) 

 Leaf : 2'-4', simple, alternate, quite or scarcely serrate, or en- 

 tire, long-obovate, apex sharp, base wedge-shaped or rounded, 

 when mature thick, dull green above, quite downy beneath ; 

 twigs usually reddish-brown ; tree and shrub. 



64. Scythe-leaved Willow. (Salix nigra, van falcata.) 

 Leaf: 4-8', simple, alternate, finely serrate, very narrow, 



apex and base tapering, often curved, both sides green and 

 smooth ; stipules persistent, crescent-shaped, serrate. Range : 

 New England to Pennsylvania and west ; low tree and shrub, 



65. White Birch. Gray Birch. (Betula populifolia.) 

 Leaf: 2-3', simple, alternate, doubly serrate, triangular, 



apex long-pointed, rather glossy ; bark white, but not peeling as 

 readily as in Paper Birch. Range : Maine to Pennsylvania, near 

 coast. (PI. IV.) 



66. Cottonwood. River Poplar. (Populus monilifera.) 

 Leaf : 2'-5', simple, alternate, rather coarsely serrate, triangu- 

 lar, apex tapering ; small branches somewhat angled. Range : 

 west New England to Illinois, and south ; stately tree ; near 

 waten (PI. VI.) 



205 



