AROLLA PINE 



71 



Fig. 75. Pinus Cembra, L. 1, shoot with young and one-year-old 

 cones, in summer ; 2, ripe cone in its second autumn ; 3, cone-scale 

 viewed from above ; 4, cone-scale viewed from below ; 5, detached wing 

 of seed ; 6, seed ; 7, transverse section of leaf; 8, seedling in its second 

 spring, showing cotyledons and primary leaves; 9, tip of cotyledon 

 viewed from above ; 10, tip of primary leaf viewed from above. (All 

 reduced, after von Tubeuf.) 



