Cl Cl Cl 
13 
pr>) 70 Leaflets commonly with one or more irregular teeth or 
notches near the base. Fruit nearly 2 inches long, very 
thin, with one seed near the middle. Cult, and escaped 
—Tree of Heaven, Ailanthus, Chinese Sumach, AiUvnthu* 
glandulosa Desf. 
70 Leaflets without the basal teeth. Fruit flat, usually at least 
2 inches long, several seeded—71 
70 Leaflets without the basal teeth. Fruit globular, % inch or 
less thick—Sumach, 170 
71 Leaflets opposite. Bark deeply furrowed—Locust, 100 
71 Leaflets alternate. Bark smooth and gray. Cult.—Yellow 
Wood, Cladraxlis lutea (Mx.f.) Koch. 
72 Juice milky. Pith occupying more than half the diameter 
of the youngest twigs—Sumach, 170 
72 Juice not milky. Pith not occupying half the diameter of 
the youngest twigs—73 
73 Fruit fleshy, red, globular; less than inch.thick; in flat- 
topped clusters. Leaflets commonly more than 11. Bark 
of trunk usually smoothish—Mountain Ash, 145 
' 73 Fruit a dry nut inch or more thick. Leaflets either less 
than 11, or else the bark of the trunk prominently fur¬ 
rowed—74 
Exterior husk of fruit not splitting away at maturity. Nut 
roughened with jagged points or ridges. Leaflets usually 
9 to 17—Walnut, 103 
Exterior husk splitting vertically into 4 parts at maturity. 
Nut smooth. Leaflets usually 5 to 9—Hickory, 104 
74 
Pixe—L eaves 2 to 5 in a cluster. Fruit a cone, composed of 
woody closely crowded and overlapping scales attached to 
all sides of a common axis. 
Cones long, scales thin at tips—70 
Cone scales thickened at tips—77 
Cone scales thickened at tips—78 
Soft Pine, Pinus 
Leaves 5 in a cluster. 
Leaves 3 in a cluster. 
Leaves 2 in a cluster. 
Cones 4 to 0 inches long—White Pine, 
Strains L. 
Cones G to 10 inches long. Occasionally cult.—Himalayan 
White Pine, Bhoton White Pine, Pi nus excelsa Wall. 
