KEY 



This key is intended not only to help in the identification 

 of an unknown specimen, but also to show the main 

 characteristics of the Families. 



TREES 

 Leaves in bundles. 



1. leaves needle-like. Pinaceae (Pinus). 



Leaves mostly or all opposite. 



1. leaves extremely narrow, at least needle-pointed. 



Pinacece (Juniperus). 



2. leaves triangular in outline, the middle and end 



division decidedly the largest. Aceracece. 



Leaves alternate. 



1. leaves oblong or nearly round, stipuled, with regular, 



saw-like teeth; flowers in catkins. Salicacece. 



2. leaves pinnately divided. J uglandacece . 



3. leaves having rounded spaces between lobes. 



FagacecE. 



4. some leaves, at least, mitten-shaped. Lauracece. 



5. leaves furnished with prickles. 



Aquifoliacece (Ilexopaca}. 



6. leaves more or less irregularly saw-toothed; flowers 



white or tinted, fragrant, five-petalled, numerous 

 stamens. .Rosacece. 



7. leaves mostly unnotched. Cornaceoe. 



SHRUBS AND LOW BUSHES 



Leaves opposite or in circles around the stem. 



1. flowers circular, fluted on the back, crimson pink; 

 or urn-shaped, whitish-pink, and fruit black; or 

 white, in close, cylindrical clusters, very fragrant. 



EricacecE, 



XI 



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