X KEY TO THE TREES OF NEW ENGLAND. 



AEG Irregularly 3-7-lobed, senate-dentate with equal 



teeth Mulberry 



A E II Pointed or bristle-tipped lobes Black oaks 



A E II Coarse-toothed or sinuate-lobed, short lobes ending 



in sharp point Sycamore 



B Outline entire, ovate, veins prominent . . Flowering dogwood 



B Outline serrate, apex often tapering Sheep berry 



B Outline lobed Maples 



II. LEAVES COMPOUND. 



Leaves pinnately compound I 



Leaflets alternate I A 



Outlines of leaflets entire ... I A C 



Leaflets opposite IB 



Leaves bi-pinnately compound J 



I A Outlines of leaflets with two or three teeth at base . Ailanthus 



Sumacs (except Poison sumac) 

 Mountain ashes 

 Walnuts 

 I Hickories 

 I A C Leaflets oval, apex obtuse . . Locusts (except Honey locust) 



I A C Leaflets oblong, apex acute Poison sumac 



I B Outlines of leaflets entire . . Ashes (except Mountain ashes) 



I B Outlines of leaflets serrate . . Ashes (except Mountain ashes) 



I B Leaflets irregularly or coarsely toothed, 3-lobed or 



nearly entire Box elder 



J Irregularly bi-pinnate, outlines of leaflets entire, 



thorns on stem and trunk Honey locust 



I A Outlines of leaflets serrate . < 



i 



