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TREES OF MINNESOTA. 



Plate 5. Pinus sylvestris. Scotch Pine. 



i. Branch bearing staminate flowers, one-half natural sire. 2. "Branch 

 bearing pistillate flowers and young cones, one-half natural size. 3. Branch 

 bearing pistillate flowers after pollination, one-half natural size. 4. Un- 

 opened pistillate flower, enlarged. 5. Scale of pistillate flower, rear view, 

 enlarged. 6. Scale of pistillate flower, front view, enlarged. 7. Anther, en- 

 larged. 8. Branch bearing ripe cone and young cone, one-half natural size. 

 9. An open cone, one-half natural size. 10. Scale of cone, one-half natural 

 size. it. Seeds with wings attached. 12. Seed, natural size. 13. Seedling, 

 one-half natural size. 



