FOKEST TEEES OF THE PACIFIC SLOPE. 



339 



The high mountain form of this species found mainly in the southern Rocky 

 Mountains, but to be louked for elsewhere al high elevations in the range of 



the species, is a small, finely branched shrub with very small, exceedingly nar- 

 row, curled leaves, and smaller fruit than is produced by tree forms of lower 



Fm. 158. — Cercocarpua ledifoUua. 



elevations. This shrub has been described as Oercocarpus ledifolius intricatUS 

 (Watson. Jones, on account of its densely branched habit, but it is here con- 

 sidered a naturally depauperate form -of higher elevations, aud is otherwise 

 essentially like the larger-leafed tree. 



