FOREST TEEES OF THE PACIFIC SLOPE. 411 



Lilac. 

 Oeanothus spinoms Xuttall. 



DISTINGUISHING CHARACTERISTICS. 



Lilac has long been known as a shrub only, but recently it has been found 

 to reach a tree size of from 12 to 15 feet in height and from 3 to 5 inches in 



Fie 190. — Oeanothus spinosus. 



diameter. It has a short, clear trunk with deep reddish-brown, scaly bark, and 



a narrow scanty-leafed, open crown of upright limbs. Mature twigs of the 



