202 Forests and Trees 



ally yellowish-green beneath, and supported on short petioles. 

 The flowers generally appear in the spring or early summer, 

 but sometimes continue to appear until almost -the end of the 

 season. The fruit is round, black and juicy, and contains 

 three nutlets. 



The wood of this tree is of no comme'rcial value, but from the 

 bark is prepared the cascara of commerce. This makes the 

 tree one of the important drug-producing plants of the world. 



It occurs along streams and on wooded mountain slopes in 

 the coast region of southern British Columbia. 



