STREET AND HIGHWAY PLANTING. 



21 



Unfortunately, this acacia grows in a very bad habit for street work. 

 The trunk is often divided quite close to the ground and seems to prefer 

 an oblique direction of growth to an upright one. Like all other 

 acacias, however, it is very tractable and can be trained to a good form. 

 This means constant attention, and constant attention for any street 

 tree makes it undesirable on account of the expense. If the tree can 

 be given the care needed, it will make a fine species for narrow streets 

 where a low planting is wanted. The shade cast at maturity is only 

 fairly heavy, though like most of the other species which have phyllodia, 

 it is more dense than the pinnately leaved forms. 



Albizzia lopantha (Fig. 2), sometimes known as Acacia lopantha, is 

 another tree to be avoided. It makes a phenomenal growth and is 

 rather attractive while young, but is very short lived and the mature 

 form is anything but desirable. It is very dirty and frequently litters 

 the street with broken limbs and seeds. It is useful, however, in sea- 

 side plantings, as it will often thrive where other vegetation will be 

 severely stunted. 



THE MADRONE. 



This native tree (Arbutus Menziesii) is found growing to perfection 

 in the northwestern part of the State, where, with the Douglas fir, it is 



Figure 3. 



a predominant feature in the landscape. It is a fair sized tree with 

 smooth red bark on the smaller limbs, broad shining evergreen leaves, 

 and large terminal panicles of white flowers which are followed by 



