94 MISCELLANEOUS CIRCULAR 92, U. S. DEPT. OF AGRICULTURE 



X Quercus subfalcata microcarpa Sargent. 79 Hybrid. 



Range. — Known only in cultivation (Arnold Arboretum, Jamaica Plain, Mas- 

 sachusetts) . 



Note on nomenclature. — Supposed to be a hybrid between Quercus phellos 

 Linnaeus and Quercus rubra Linnseus. 



X Quercus heterophylla Michaux fils. Bartram Oak (Hybrid). 



Range. — Pennsylvania (near Philadelphia — but tree long since destroyed); 

 New Jersey (near Camden) ; Delaware (Wilmington) ; New York (Staten Island) ; 

 Virginia (near Alexandria); District of Columbia; western North Carolina; 

 Tennessee (Coffee County); Alabama (near Falkville); southeastern Oklahoma; 

 Texas (Houston). 



Note on nomenclature. — Supposed to be a hybrid between Quercus phellos 

 Linnaeus and Quercus borealis maxima (Marshall) Ashe, some authors substituting 

 Quercus velutina La Marck for the latter supposed parent. 80 Quercus Hollickii 

 Schneider is believed to be only a phase of this hybrid. 



names in use 



Bartram's Oak (Del., Ala.). Variable Oak (lit.). 



Burners Oak (lit.). 



*Quercus laurifolia Michaux. Laurel Oak. 



Range. — North Carolina (Craven County) and southward (in the coast 

 region) to Florida (Biscayne Bay and Caloosahatchee River); westward in the 

 Gulf region to Louisiana; ranging inland more or less throughout this territory. 



NAMES IN USE 



Laurel Oak (N. C, S. C, Ala., Fla.). Willow Oak (Fla., S. C). 



Swamp Laurel Oak. Water Oak (N. C, Ga.). 



Darlington Oak (S. C). Pin Oak (La., Miss.). 



Quercus laurifolia (hybrida) 81 Michaux. laurel Oak. 



Range. — Range imperfectly known at present. Known to occur in south- 

 eastern Virginia (Blackwater River near Zuni, Isle of Wight County); eastern 

 North Carolina (near Newbern); South Carolina (vicinity of Darlington and 

 Bluff ton) ; Florida ( Apalachicola River at Chattahoochee) . 82 



name in use 

 Laurel Oak 



» C. S. Sargent (Bot. Gaz., Vol. LXV, No. 5, p. 454, 1918) says that the type of this form was obtained 

 from the Walenberg Nurseries, Hazerswoude, Holland, under the name Quercus chinensis microcarpa. 



so Arthur Hollick (Sci. Am., Oct. 25, 1919, p. 422) states that from planted acorns of Bartram's Oak he 

 derived typical plants of the Red Oak [Quercus borealis maxima (Marshall) Ashe], of the Willow Oak, 

 and of Quercus heterophylla Michaux f. From this experiment it would seem that the first two of these 

 derivatives are the parents of Bartram Oak. 



81 Before this originally constituted trinominal member that of Quercus hybrida (Chapman) Small 

 (—Quercus aquatica Chapman) would fall, the latter by some authors being considered a synonym of 

 Quercus nigra Linnaeus. 



m Sargent (Bot. Gaz., Vol. LXV, 433, 1918). 



