SPRUCE. 



149 



Plate 8. Picea canadensis. White Spurce. 



1. Branch bearing staminate flower, one-half natural size. 2. Branch bearing 

 pistillate flower, one-half natural size. 3. Anther, side view, enlarged. 4. Pol- 

 len grain showing air sacs, enlarged. 5. Branch bearing ripened cones, one-half 

 natural size. 0. Scale of cone with seeds attached, natural size. 7. Scale of 

 cone, rear view, natural size. 8. Cross section of needle, enlarged. 9. General 

 view of tree. 



