Fig. 1. Fossil remains of Robinia, Gleditsia and Gymnocladus. 



1-3. Leaflets and fruit of Robinia pseudacacia Linn. 4. Robinia hesperidum 

 linger from the Upper Miocene of Croatia. 5. Leguminosites robiniifolia Berry 

 from the Upper Cretaceous of South Carolina. 6-S. Leaf and fruits of Robinia 

 regeli Heer from the Miocene of Oeningen. 9. Robinia constricta Heer from the 

 Miocene of Oeningen. 10. Gymnocladus dioicus Koch. 11. Gyynnocladus Casei 

 Berry from the Miocene of Oklahoma. 12. Gleditsia allemannica Heer from the 

 Miocene of Oeningen. 13. Gleditsia triacanthos Linn. 14-16. Thorn, leaf and 

 fruit of Gleditsia Wesseli Weber from the Lower Miocene of Germany. 



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