KEY TO THE TREES OF NEW ENGLAND.
Reading edition
I. LEAVES SIMPLE.
Leaves alternateA
Outline entireA C
Outline slightly indentedA D
Outline lobedA E
Lobes entireA E F
Lobes slightly indentedA E G
Lobes coarsely toothedA E H
Leaves oppositeB
A COvate to oval, obscurely toothedTupelo
A COvate to ovalPersimmon
A CAlso 3-lobedSassafras
A CSometimes opposite, clustered at the ends of the branchletsDogwoods
A DTremulous habit, ovalPoplars
A DLanceolate, finely serrate, sometimes entireWillows
A DOvate-oval, serrate, doubly serrateBirches Hornbeams
A DOval, serrate, oblong-lanceolate, veins terminating in teethBeeches Chestnut
A DOvate-oblong, doubly serrate, surface roughElms
A DOvate to ovate-lanceolate, serrate, surface slightly roughHackberry
A DOutline variable, ovate-oval, sometimes lobed (3-7), serrate-dentate Mulberry
A DOvate, serrate, oblongShadbush Plums Cherries
A DOval or oval-oblong, spines, evergreenHolly
A DBroad-ovate, one-sided, serrateLinden
A DObovate, oval, lanceolate, oblongChestnut oaks
A DBroad-ovate to broad-elliptical, thornyThorns
A E FLobes roundedSassafras
A E FBase truncate or heart-shapedTulip tree
A E FObtuse, rounded lobesWhite oaks
A E F3-5-lobed, white-tomentose to glabrous beneathWhite poplar
A E G5-lobed, finely serrateSweet gum
A E GIrregularly 3-7-lobed, serrate-dentate with equal teethMulberry
A E HPointed or bristle-tipped lobesBlack oaks
A E HCoarse-toothed or pinnate-lobed, short lobes ending in sharp pointSycamore
BOutline entire, ovate, veins prominentFlowering dogwood
BOutline serrate, apex often taperingSheep berry
BOutline lobedMaples
II. LEAVES COMPOUND.
Leaves pinnately compoundI
Leaflets alternateI A
Outlines of leaflets entireI A C
Leaflets oppositeI B
Leaves bi-pinnately compoundJ
I AOutlines of leaflets with two or three teeth at base.Ailanthus
IOutlines of leaflets serrateSumacs (except Poison sumac) Mountain ashes Walnuts Hickories
I A CLeaflets oval, apex obtuseLocusts (except Honey locust)
I A CLeaflets oblong, apex acutePoison sumac
I BOutlines of leaflets entireAshes (except Mountain ashes)
I BOutlines of leaflets serrateAshes (except Mountain ashes)
I BLeaflets irregularly or coarsely toothed, 3-lobed or nearly entireBox elder
JIrregularly bi-pinnate, outlines of leaflets entire, thorns on stem and trunkHoney locust