TREK PLANTING IN UTAH. 233 



The average height of our specimens is 20 feet, and the average 

 circumference 18 inches. The leaves are lance-shaped, rather 

 small, with long points, and narrow bases, and have finely saw- 

 toothed margins. The Fragile Willow is very easily propa- 

 gated from cuttings. 



Golden Willow. (Salix aiirea.} Our specimens of this spe- 

 cies have been allowed to take the bush form, though in Europe 

 they grow as trees, and are, it is said, easily made to take 

 that form in this country. Our bushy specimens would make 

 a splendid wind-break, and, judging from their roots, could be 

 used well for binding the soil of ditches and canals. The leaves 

 of this species are much like those of the Fragile Willow. The 

 bark is of a bright golden color, especially noticeable in the 

 winter, and much admired by some, but quite too conspicuous 

 for extensive ornamental planting. Our bushy specimens 

 average about 16 feet in height. 



Rosemary-leaved Willow. (Salix rosmarinifolia.) I doubt 

 whether this willow can be used in this region for any purpose 

 excepting as an ornamental, or for a bushy screen or wind- 

 break, as its straggling habit of growth is so pronounced that 

 it would be difficult to make a good tree out of it. It is a rather 

 small willow, and in taking on its bushy form, suckers most 

 vigorously. The leaves are oblong and quite large; they are 

 blue on the underside and always very bright and clean, both 

 from growth and because of immunity from disease and in- 

 sects. The maximum growth in our specimens is 15 feet. 



Black Willow. (Salix nigra Marsh.) The Black Willow 

 is a native of Utah, and in favored localities reaches the magni- 

 tude of a fair-sized tree. The specimens on our grounds are 

 not growing in the Station arboretum and*are not a part of this 

 experiment, but there are several specimens on the College 

 campus, and the tree has merit enough to deserve to be men- 

 tioned in connection with the other willows. The leaves of the 

 Black Willow are long, narrow, lance-shaped and bright green 

 on both surfaces. This species is one of the largest of the 

 willows; it has a thick set trunk and branches, the latter 

 being spreading and rather upright, forming a handsome, open 

 head. The branchlets are slender and like those of the Fragile 

 Willow, very brittle at the base. The wood is light, soft and 

 weak and checks very badly in drying; weight, 27^ pounds per 

 cubic foot. From the description given above, it can be seen 



