Key to the Species 



f* Leaves very small, scale-like. 



""" Fruit a small blue berry Red Cedar (18) 



Fruit a little cone about the size of 



a pea Juniper (16) 



Fruit a cone %-% inch long Arbor-Vitae (17) 



II. Broad Leaved Trees: Not Cone Bearing. Angiosperms. 



Leaves evergreen, splitting into strips, grouped 

 ' at the top of a single stout stem (Monocot- 

 yledons). 



Leaves several feet wide, fan-shaped Palmetto (19) 



Leaves not splitting into strips, usually not 



evergreen (Dicotyledons). 

 A. Leaves compound, alternate on the twig. 

 Leaves twice compound.* 



Trunk and branches thorny or prickly. 



Leaves less than one foot long Honey Locust (110) 



Leaves more than two feet long. . . . Hercules Club (140) 

 Not thorny. 



Leaflets with teeth China-berry Tree (p. 73) 



Leaflets without teeth. 



Leaflets one-sided "Mimosa" (p. 71) 



Leaflets symmetrical Kentucky Coffee Tree (p. 71) 



Leaves once compound. 



Odor offensive Tree of Heaven (p. 73) 



Odor not offensive. 

 Fruit a flat pod. 

 ^Branches with short thorns ; twigs 



I >| and leaf stems not sticky Black Locust (113) 



^Branches with or without short 

 thorns ; twigs and leaf stalks 



very sticky Clammy Locust (114) 



Branches without thorns ; twigs 



and leaf-stalks not sticky Yellow Wood (112) 



Fruit a small one-seeded capsule ; 

 branches prickly ; leaves fragrant 



when bruised Prickly Ash (115) 



Fruit a small red berry ; twigs 



smooth Mountain Ash (85) 



Fruit a small red berry ; twigs dense- 

 ly fuzzy Btaghorn Sumach (116) 



Fruit a nut, hull dividing into four 

 parts when ripe.t 

 Bark flaky or scaly. i 



• The Honey Locust may also bear once compound leaves. 



t In the Pig-nut Hickory the hull usually does not split into 

 parts. 



t In the Small-fruited Hickory the bark is sometimes only ob- 

 scurely flaky below, but in such cases the upper part of the tree 

 will show this character more clearly. 



