12 
GO Bark not whitish and papery— Oak, 123 < 
Note: —The Fern-leaved Beech (occasionally planted), with 
smooth gray hark, long pointed buds, and deeply divided 
leaves, may be sought nere. 
61 Leaflets all attached at one point (i.e. leaves palmately 
compound), with no stalk to any of the leaflets—G2 
61 Leaflets scattered along both sides of the common axis (i.e. 
leaves pinnately compound), if composed of only 3 leaflets 
then the terminal one with a distinct stalk—63 
62 Leaflets 3. Generally a shrub. Long Island—Hop Tree, 
Wafer Ash, Ptelea trifoliala L. 
62 Leaflets 5 or more. Cult.—Horse-chestnut, Buckeye, 183 
63 Leaves with an odd leaflet at the tip—66 
63 Leaves usually with a pair of leaflets at the tip— 64 
64 With thorns on the branches or trunk. Cult.—Honey 
Locust, Three-thorned Acacia, Honey Shucks, Honey, 
Gleditsia triacanthos L. 
64 Without thorns—65 *£> 
65 Leaves once compound. Cult, and escaped—Tree of 
Heaven, Ailanthus, Ailanthus glandulom Desf. 
65 Leaves twice compound, at least part of leaf. Cult.—Ken¬ 
tucky Coffee-tree, Gymnocladus dioica (L.) Koch. 
(>6 Leaves only once compound—67 
66 Leaves twice compound, at least part of leaf. Cult.—Ken¬ 
tucky Coffee-tree, Gymnocladus dioica (L.) Koch. 
67 Leaves opposite—68 
67 Leaves alternate—69 
68 Wing of fruit unsymmetrical, thickened at one edge. Leaf¬ 
lets usually 3 or 5—Box Elder, Ash-leaved Maple’, 174 
68 Wing of fruit symmetrical, not thickened at one edge. 
Leaflets usually 7 or 9—Ash, 190 
69 Margins of leaflets more or less regularly toothed, at least 
above the middle—72 
69 Margins of leaflets without teeth, at least none above the ;V 
middle—70 
