Key to the Chautauqua Trees 



I. Indentations less than half 



way to midrib Scarlet Hawthorn 



I'. Indentations about half way 



to midrib Sycamore 



I". Indentations reaching nearly 



to midrib English Hawthorn 



H'. Leaves distinctly longer than 



wide. 

 I. Lobes rounded at end. 



J. Leaves whitish beneath English Oak 



J'. Leaves not whitish beneath . . White Oak 

 I'. Lobes pointed at end Red Oak 



2. Leaves made up of separate leaf- 

 lets (compound). 



D. Branches with thorns Black Locust 



D'. Branches without thorns. 



E. Leaflets 2 to 5 to each leaf Shellbark Hickory 



E'. Leaflets 5 to 7 to each leaf Pignut Hickory 



E". Leaflets 7 to 1 1 to each leaf Swamp Hickory 



E'". Leaflets 1 1 to 1 7 to each leaf . . . Butternut 

 E"". Leaflets 15 to 40. Black Walnut 



F. Branches woolly Staghorn Sumach 



F/ Branches smooth Ailanthus 



Mountain Ash 



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