KEY TO GENERA AND SPECIES 89 



137. Mature acorn cups more than i inch broad. 

 Del., Md., southward. The leaves of this 

 species are much like those of a Chestnut 

 Oak (See Fig. 164), but with pointed teeth. 

 Cow Oak, Basket Oak Quercus Michauxii 

 Nutt. 



137. Mature acorn cups less than i inch broad. 



Fig. 165. Chestnut Oak. 



Fig. 166. 

 English Oak. 



Southern Me. and N. H. southward. (Figs. 

 164, 165.) Chestnut Oak, Rock Oak, 

 Rock Chestnut Oak, Quercus Prinus L. 



138. Base of the blade pointed 139. 



138. Base of the blade ear-shaped (auriculate). 



Cult. Native in Europe. (Figs. 166, 167.) 



English Oak, Quercus Robur L. 



