KEY TO GENERA AND SPECIES 35 



55, 56.) Honey Locust, Three-thorned 



Acacia, Honey Shucks, Honey, Gleditsia 



triacanthos L. 



65. Without thorns 66. 



56. Leaves once com- 

 pound. Cult, and 

 escaped. Native of 



China. (Figs. 57, F 'g- 57- Tree of Heaven, Ai- 

 lanthus. Two leaflets from a 



58.) Tree Of Heav- leaf made up of 31 leaflets.. 

 pn Ailanthns: Phi a - From middle of leaf - b - 



en, Ailantnus, uu- From base of leaf 

 nese Sumach, Ai- 

 lanthus glandulosa Desf. 



Leaves twice compound, at least in part of 

 the leaf. Central N. Y. westward and south- 



Fig. 58. Tree of Heaven, Ailanthus. 



westward, also cult. (Figs. 59, 60.) Ken- 

 tucky Coffee-tree, Gymnodadus dioica (L.) 

 Koch. 



