78 WEST AMERICAN OAKS. 



the verj' shallow-hemispherical scaly and not at all tuberculate cup. I hope that this 

 little oak of southern Oregon may be proven the natural type of Q. Gilberti. I raise thus 

 the question which future exploration must answer. But the leaves of the insular shrub 

 are so peculiar that I shall not here presume to say positively that any other oak known 

 to me can safely be associated with it under one specific name. 



I scarcely need add that the colleague of Dr. Davidson, Capt. J. J. Gilbert of the 

 United States Coast and Geodetic Survey, who did us such excellent service in the matter 

 of Quercus Jacobi^ is the discoverer, and thus far the only collector, of this oak which bears 

 his name. 



