THE OAKS 



TREES of great lumber and horticultural value. Leaves 

 simple, alternate, entire or lobed. Flowers monoecious, in- 

 conspicuous; staminate, in pendulous catkins; pistillate, sol- 

 itary or few in a cluster. Fruit, a dry nut in a scaly cup (an 

 acorn). 



KEY TO OAK GROUPS 



A. Flowers of two sorts borne in separate clusters; stam- 

 inate in pendent catkins; pistillate, few or solitary 

 on short stalks. 



Genus QUERCUS, Linn. 



B. Fruit annual; leaves with rounded lobes, not spiny 

 pointed; bark usually pale. 



THE WHITE OAK GROUP 

 BB. Fruit biennial; leaves with lobes spiny pointed; 



bark usually dark. THE BLACK OAK GROUP 



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