Holly
A D Broad-ovate, one-sided, serrate Linden
A D Obovate, oval, lanceolate, oblong Chestnut oaks
A D Broad-ovate to broad-elliptical, thorny Thorns
A E F Lobes rounded Sassafras
A E F Base truncate or heart-shaped Tulip tree
A E F Obtuse, rounded lobes White oaks
A E F 3-5-lobed, white-tomentose to glabrous
beneath White poplar
A E G 5-lobed, finely serrate Sweet gum
A E G Irregularly 3-7-lobed, serrate-dentate with
equal teeth Mulberry
A E H Pointed or bristle-tipped lobes Black oaks
A E H Coarse-toothed or pinnate-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 I B
=Leaves bi-pinnately compound= J

I A Outlines of leaflets with two or three teeth at base. Ailanthus
IA Outlines of leaflets serrate { Sumacs (except Poison sumac)
{ Mountain ashes
{ Walnuts
{ 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

LIST OF PLATES.

PLATE PAGE

I. Larix Americana 4
II. Pinus Strobus