Key to the Chautauqua Trees 



2. Each leaf made of many leaflets 



(compound). 



D. With leaflets arranged like ringers. 

 E. Leaflets widest near outer end, 



fruit pods prickly Horse Chestnut 



E'. Leaflets widest near center, fruit 



pods smooth Buckeye 



D'. With leaflets arranged like a 

 feather. 



E. Leaflets 3, sometimes 5 Ash-leafed Maple 



E'. Leaflets more than 5 White Ash 



C. Leaves springing one by one 

 from the stem (alternate). 



i. Entire leaf in one piece (simple). 

 D. Base of leaves uneven on the two 



sides (oblique). 



E. Leaves about half as wide as 

 long (Elm). 



F. Leaves smooth on upper surface . . White Elm 

 F'. Leaves rough on upper surface. 



G. Lower branches pendulous Wych Elm 



G'. Lower branches not pendulous . . Slippery Elm 



E'. Leaves more than half as wide 



as long (Linden). 

 F. Leaves more than four inches 



long American Linden 



F'. Leaves less than four inches long. Small-leaved Linden 



D'. Base of leaf evenly developed 

 on both sides of midrib. 



E. Leaves without deep indenta- 

 tions (not lobed). 

 F. Edge of leaf unbroken or very 



nearly so Cucumber Tree 



F'. Edge of leaf wavy, but not 



deeply so Witch Hazel 



F". Edges of leaf toothed but not 



deeply lobed. 

 G. Leaves broadest quite near the 



base. 

 H. Bark peeling around the tree. .White Birch 



