The Trees of Texas 5 
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bear a tuft of long silky hairs at the apex. Found principally 
in damp situations. There are so many hybrids and intro- 
duced species that the classification of the willows is difficult 
and sometimes impossible. The following key includes the 
forms which are known to occur in our area. 
Eramcnes decidedly drooping. ...... 2.20... eeteees 1. S. babylonica. 
Branches not decidedly drooping. 
Leaves small, 1/3’-1 1/3’ long, entire or nearly so, 
mame e@reen Of Poth Sides. ii eres... soo ce cle wes 2. S. taxifolia. 
Leaves long, 4’-7’, silvery white below........... 3. S. longipes. 
Leaves green on both surfaces, 3’-6’ long, %’-%4’ 
wide, narrowly lanceolate, long-pointed....... 4. S. nigra. 
Leaves pale, or glaucous below, 2-%’-4’ long, 
[ae 2 wide, broadly lanceolate. .2...........: 5. S. amygdaloides. 
Leaves linear, lanceolate green on both surfaces, 
Serer. ee A WAGE «220% 2.02 ho ow. g Bens oe uh 6. S. interior. 
1. Salix babylonica L. Weeping Willow. An ornamental 
tree which has been introduced from Asia and is grown quite 
extensively throughout North and South America. Its dis- 
tinguishing mark is the drooping habit of its branches from 
which its name is derived. Sometimes reaching a height of 
60’ and a trunk diameter of 3°-5°, with bark on old parts gray, 
rough and fissured. The young twigs are green, slender, and 
drooping. Leaves linear to linear lanceolate, pointed, pale 
green below. It is used only as an ornamental shade tree. 
2. Salix taxifolia H. B. K. Willow. Yew Leaved Willow. 
A tree sometimes reaching a height of 40°-50° and trunk 
diameter of 18’, with broad open crown, light gray-brown, 
fissured bark, 34’-1’ thick, covered with small scales. Leaves 
smaller than any of the other species of willow, 1/3’-11/3’ 
long, 1/12’-1/8’ wide. 
Arizona southward through western Texas and Mexico to 
Guatemala. It is sometimes planted for ornament. 
3. Salix longipes Anderson. Ward’s Willow. Trees 
reaching a height of 30° and trunk diameter of 6’-8’, with 
thick, brown, rough bark divided into angular plates, hairy 
and reddish brown on young twigs. Leaves lanceolate to 
ovate lanceolate, somewhat pointed at the apex, round or 
heart-shaped at base, bright green and smooth above, pale and 
glaucous or hairy beneath. Flowers in April and May. 
