33 TREES OF MINNESOTA. 
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Plate 48. Gleditsia triacanthos. Tloney Locust. 
i. Flowering branch of staminate tree, one-half natural size. 2. Flow- 
ering branch of pistillate tree, one-half natural size. 3. Diagram of flower. 
4. Longitudinal section of staminate flower, enlarged. 5. Longitudinal 
section of pistillate flower, enlarged. 6. Longitudinal section of ovary, en- 
larged. 7. A spine and a single fruit showing seed, cross section of seed 
and embryo, one-half natural size. 8. Doubly pinnate leaf, one-half natural 
size, 9. Winter branchlet, one-half natural size, 
