46 STREET AND HIGHWAY PLANTING. 



One thing should be remembered, and that is, that this species is a 

 good harbor for many scale insects. It is true that many of them are 

 not those of first importance on the citrus fruits, but it is possible that 

 a free planting of this species might change the proportion of occur- 

 rence or might make a new host for the most destructive forms. 



The pepper tree is in many cases proving too expensive to warrant 

 further planting, on account of its harboring the black scale, and with 

 this example before us, it would hardly be wise to proceed to plant a 

 possible subject for the repetition of such trouble. 



THE INCENSE CEDAR. 



This native tree (Libpcedrus decurrens) (Fig. 17) is one frequently 

 met with in isolated cases. In some instances the specimens are of 

 exceptional beauty, with abundant semi-drooping evergreen foliage and 

 branches, and with the aromatic odor of the cedars. When the tree 

 has not sufficient mosture the tips of the branches are apt to drop out 

 and give the tree a very ragged appearance. 



The style of growth is columnar and the tree is not remarkably disfig- 

 ured by the removal of the lower branches, as is the case with so many 



Figure 17. 



conifers. In many ways the tree resembles the Lawson cypress, except 

 that the pendant character of the tips of the branches is a distinctive 

 characteristic. 



The shade is very dense, and as the tree is not a very rapid grower 

 it can not be recommended for every situation. This question had best 



