20 MONTANA EXPERIMENT STATION Cir. 78 



by snow or wind and the insects which infest it. It is not a good 

 street tree. 



Elm, White, (Ulmus Americana) is hardy at the lower altitudes 

 of the State and is a desirable tree for street and home ground 

 planting. At higher altitudes with a short growing season it is not 

 hardy. It requires a rather moist soil. 



Larch (Larix Americana) is a desirable ornamental, growing to 

 a height of 60 feet. It is hardy at Bozeman but is a doubtful tree 

 for the prairies unless irrigation water is available. 



Larch (Larix occidentalis} is native to the western part of 

 the State and is hardy at Bozeman. It grows. to a height of 150 

 feet. As the larches generally do better in moist soil, this tree is 

 of doubtful value without irrigation. 



Locust, Black, (Robinia pseudacacia) has pinnate leaves. The 

 flowers are pea-like in form and the seeds are borne in pods. It 

 grows 60 to 80 feet high. At Bozeman the tree is not hardy. At 

 lower altitudes in the State with a longer growing season it can be 

 grown. 



Maple, Manchurian, (Acer Ginnala) is a small tree 20 feet high. 

 The leaves turn red in the fall, making it desirable in shrubberies 

 for autumn effects. At lower altitudes it is hardy. At higher altitudes 

 it kills back when young but seems hardy as it grows older. 



Maple, Norway, (A. platanoides) grows to 100 feet. It is a 

 beautiful tree with a round symmetrical head producing dense shade. 

 It does not grow as rapidly as the soft maple and has a tendency 

 to form branches near the ground, which sometimes makes it unde- 

 sirable as a street tree. At lower altitudes than Bozeman it is hardy. 

 At Bozeman the greatest injury generally comes the first year after 

 setting out. After that the injury is not sufficient to warrant dis- 

 carding it from our list of trees. 



Maple, Silver or Soft, (A. saccharinum) grows 120 feet high 

 and is one of the fastest growing maples. The leaves are 4 to 6 

 inches long and deeply lobed, and are silvery on the under side. It 

 grows best in rich, moist soils. It is not hardy enough to warrant 

 planting at high altitudes. At lower altitudes than Bozeman, where 

 the growing season is longer, the soft maple makes a desirable shade 

 and street tree. Weir's cut-leaved maple is an improved variety of 



