FOREST TREES OF THE PACIFIC SLOPE. 341 



borders. This form occurs in the Southwest. Cercocarpua parvifolius pauci- 

 dentatus, a form of the same region, is characterized by leaves with few or no 

 marginal teeth. 



Fig. 159. — Cercocarpus parvifolius. 

 RANGE. 



From western Nebraska to Oregon (Siskiyou Mountains), south to western Texas and 

 northern Mexico ; California (west of Sierra Nevada and south to San Jacinto Moun- 

 tains ; Santa Cruz Islands) ; Lower California (mountains). 



OCCURRENCE. 



Habitat and silvical characteristics similar to those of mountain mahogany. 



