198 



The Plant World. 



QUERCUS LEAN A; A HYBRID OAK. 

 By Louis W. Sauer. 

 It is now quite universally accepted that the Lea oak 

 (Quercus Leana, Xutt.) is a hybrid between the shingle oak 



Fig. 1. Quercus Leana on grounds of Captain Holden, Cincinnati, Ohio 



(Q. imbricaria, Michx.), and the black oak {Q. velutina, Lam.). 

 Before the characters and description of the hybrid are taken 

 up, we shall briefly consider the two parents. 



Out reus imbricaria, Michx., Shingle Oak. — A forest tree 

 usually 60 to 75 feet high, with a trunk of less than three feet 



