198 Forests and Trees 



tions reaches a diameter of eighteen inches to two feet. It 

 does not cast a good shade, so that if planted alone grass is 

 likely to grow beneath the trees. This makes it advisable al- 

 ways to mix green ash with other trees to get a good cover for 

 the ground. 



The wood is used locally but mostly for fuel, and it has 

 proved a satisfactory tree for street or lawn planting. It can 

 be grown easily from seed and when young grows rapidly. It 

 is very late in getting its leaves in the spring and loses them 

 early in the fall. This is, perhaps, its worst feature as an orna- 

 mental tree. 



The Red Ash (F. pennsylvanica), the type of the species of 

 which the green ash is a variety, has been reported as growing 

 along the Red river and westward, but the only specimen I have 

 seen was sent to me by Dr. Buller, Professor of Botany in 

 Manitoba University. It was collected by him at Victoria 

 Beach on Lake Winnipeg. It differs from the variety in having 

 velvety petioles and twigs, and broader leaflets on distinct 

 petioles. 



3. OREGON ASH. Fraxinus oregona. Nuttall. 



This tree may be looked for in southern British Columbia, 

 as its range includes the whole of the states to the south. It is 

 a fairly large tree, with rough gray or brown bark and leaves of 

 five to nine, mostly seven, leaflets. The leaflets are sessile, 

 ovate and blunt-pointed. The wing of the samara runs down 

 along the seed to the middle or farther. 



The wood of this tree is valuable, being used much as black 

 ash is used in the eastern part of the continent. It is also 

 largely used for street planting. 



