11 
51 Leaves usually rounded at one or both ends. Bark without 
papery-margined scales—Alder, 110 
52 Blade nearly as wide as long, with an uhsymmetrical base— 
Linden, 180 
52 Blade usually longer than wide, base symmetrical—53 
53 Fruit fleshy or juicy, commonly globular, not splitting open 
at maturity. Wood commonly rather heavy and hard—54 
53 Fruit neither globular, fleshy, nor juicy; splitting open at 
maturity. .Seeds with long cottony hairs. Wood soft 
and light. Twigs commonly brittle—50 
Note: —The Hop Hornbeam may lx* sought here if the side 
veins of the blade are more curved than usual. 
54 Fruit with a single central stone which incloses a single 
seed—Cherry, Plum, Peach, 108 
54 Fruit with the seeds in thin walled compartments—55 
55 Fruit less than ]/ z inch thick—Juneberry, 140 
55 Fruit % to 2 inches or more thick—Apple, Pear, 144 
^ 50 Leaf-stalk less than ^ the length of the blade, or else the 
width of the blade less than % the length—Willow, IK) 
50 Leaf-stalk more than % the length of the blade, or els- the 
blade nearly as wide as long—Poplar, 95 
57 Leaves abruptly cut off or indented at the broad a]x*x. 
Southern N. E. Cult.—Tulip Tree, White Wood, Yellow 
Poplar, Lirifxlendron Tulipifera L. 
57 Leaves pointed or rounded at apex, not indented—58 
58 Twigs bright or shining green, bark spicy aromatic when 
bruised—Sassafras, Saxxafrax variifolium (Salisb.) Ktze. 
58 Twigs not spicy aromatic—Oak, 128 
Note :—The Fern-leaved Beech (occasionally planted), with 
smooth gray bark, long pointed buds, and deeply divided 
leaves, may be sought here. 
59 Brandies thorny. Cult, and escaped—English Hawthorn, 
147 
59 Branches not thorny—00 
^ 00 Bark whitish and papery. Cult.—Cut-leaved Weeping 
Birch, 111 
