ROCK PINE. ROCKY MOUNTAIN YELLOW PINE. 



Finns ponderosa scopulorum Engelm.* 



Fig 4. Branch with mature cones and young cones at the close of the first season, i; a 

 detached cone, 2 (Note it has broken away from branch within the base, leaving a few scales 

 attached to branchlet) ; seeds and their wings, 3 ; detached terminal and branch buds, 4- 

 S. Trunk of forest tree with cones at base. n r r> /^ t 



For these specimen and photograph of trunk I am indebted to Prof. B. O. Longyear. 



