﻿1. A 



2. A 



3. A 



4. A 



5. ("o 

 0. Ov 



Black Spruce 



Picea mariana (Mill.) B. R. and P. [Pieea nigra (Ait.) Link.] 



7. A fruiting- branch showiii 



brancli with staminate flowers x % 



stamen, front view x 10 



stamen, lateral view x 10 



branch with ovulate flowers x % 



ver anrt ovuliferons scale, lower side x 8 



uliferous-scale, upper side, showini? 



ovules X S 



A fruiting branch showing mature cones 

 X % 

 S. Scale from mature cone, upper side, show- 

 ing seeds X 2 

 9. Winged seed x 4 



