Pinaceae 31 



A tree 30-60 feet high, slender, 

 bertiana S str ict ; twigs smooth and shining 

 Brown. or occasionally glandular, hairy, 



Alberta but never glaucous, yellowish- 



Spruce. brown when young becoming 



darker with age, leaf -bases long and stand- 

 ing out at right angles from the stem; 

 leaves pale blue or blue- green, J i inch 

 long, nearly straight or curved, acute or 

 with a rigid tip, 4-sided ; cones ovate or ob- 

 long, bright crimson when young, at maturity 

 i-ij inches long and nearly as broad 

 when expanded, scales stiff and rigid, broadly 

 rounded at the apex, entire, broader than long, 

 cinnamon brown with a chestnut edging;' 

 bract very small with a sharply angular tip. 

 The common spruce in the lower valleys 

 and river bottoms throughout the Rockies. 



A tree often 150 feet high but 

 PiceaEngel- 



usually much lower, with a 



manm 



(Parry) trunk reaching 4-5 feet in di- 



Engelm. ameter ; spreading branches, pro- 

 Engelmann's duced ^ regular whorls and 



Spruce. 



forming a narrow compact py- 



