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TREES OF MINNESOTA. 



Plate 39. Ulmus pubescens. Slippery Elm. 



i. Flowering branch, one-half natural size. 2. Fruiting branch, one-halt 

 natural size. 3. A young winter branch with buds, one-half natural size. 

 4. Winter branch, showing flower buds beginning to enlarge, one-half 

 natural size. 5. Summer branch, one-half natural size. 6. Flower, en- 

 larged. 7. Longitudinal section of flower, enlarged. 8. Longitudinal sec- 

 tion of pistil, enlarged. 9. Stamen, enlarged. 10. Cross section of ovary, 

 enlarged, n. Longitudinal section of fruit, one-half natural size. 12. Seed, 

 enlarged. 13. Longitudinal section of seed, enlarged. 14. Kmbryo, en- 



