$26 
10 to 30 feet high and 6 to 10 inches in diameter. The timber is soft, 
light, and weak. 
Description. —Leay es lance-ovate, 2 to 4 inches long, + to 1 inch broad, margin 
finely and sharply” toothed; pale or whitish ponents Toate fouled) wiles 
glands. 
79.—Saliz lasiandra, Bentham. 
An important willow for commercial purposes, several well-marked 
varieties of which having proved quite satisfactory osiers. Abundant 
on banks of streams in Rocky Mountains of Colorade and northern 
New Mexico (on the Pacific coast from central California to and north 
United States boundary). Generally more common and much larger. 
tree than the preceding, although the wood is not materially different; 
in favorable loealities it reaches a height of from 25 to 60 feet, with a 
diameter of 15 feet or more. 
Description.—Leaves 1 to sometimes 64 inches long, Janceolate, with long thin 
point, finely and sharply toothed on the margin; smooth above, pale or whitish 
on the under surface ; footstalks glandular at the upper end. The old bark is rather 
strongly furrowed, and is of a grayish or brownish color; the young branches are 
olossy yellow, and in habit not unlike the Weeping Willow, 
80.—SAND-BAR WILLOW. (Salix longifolia, Mublenberg.) 
A small but widely-distributed species, occurring throughout the 
Rocky Mountain region (also in eastern United Statés and in the Pa- 
cific States). It is commonly found growing on the moist banks of 
streams and on sand-bars, in some cases forming thick growths. In 
the central Pacific coast region it is said to attain its greatest develop- 
ment, but it is a small tree, rarely more than 25 to 30 feet high and 4 to 
1 foot in diameter. The wood is light and soft. 
Description.—Leaves 3 to 4 inches long, jz to 4 (commonly { to $) of an inch wide, 
linear to lance-shaped, long-pointed, tapering at the base, sessile or with short stems: 
margin entire, or with very small somewhat distant teeth.—Two or three varieties 
of this species occur, which differ from the type chiefly in the form of the leaves and 
pubescence. : 
81.—(Salix flavescens, Nuttall.) 
A tree of 20 to 25 feet in height and 6 inches to 1 foot in diameter, 
found on the banks of streams in the mountains from New Mexico to 
Montana and Idaho (also occurring in central Pacific coast region.) It 
reaches its largest size in the southern Rocky Mountain region. The 
wood is light and lacking in strength; a variety of this species, called 
the Black Willow, and confined to the Pacific coast, has tough, strong 
wood. 
Description.—Leaves 2 to 3 inches long, 1 to 14 inches wide, ovate or lance-shaped, 
tapering at the base; with age becoming smooth and a dull green above, below 
whitish or with yellowish-brown pubescence. 

