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



NAMES IN USE 



Water Oak (Del., N. C., S. C., Ala., Punk Oak. 



Fla., Miss., La., Tex., Ark., Mo.). Red Oak (trade, in part). 



Spotted Oak (Tex., Ala.). Pin Oak (Miss., La., Fla.). 



Duck Oak. 

 Possum Oak. 



X Quercus demarei Ashe. Hybrid. 



Range. — Arkansas (vicinity of Conway, Faulkner County). 



Quercus nigra tridentifera Sargent. 74 Water Oak. 



Range. — Southwestern Virginia to central Alabama, western Mississippi (near 

 Natchez, Adams County; near Jackson, Hinds County); and eastern Louisiana; 

 Texas (on the Navided River, Lavaca County). 



Note on nomenclature. — Later study is likely to show that the above- 

 named variety should be designated as Quercus nigra elongata (Aiton) Ashe 

 (Bull. Torr. Bot. CI., XLIX, 268, 1922). 



NAME IN USB 



Water Oak 



X Quercus neopalmeri Sudworth. Hybrid. 



Range. — A single tree now known, is growing on the banks of a creek a few 

 miles from McNab, Hempstead County, Arkansas. 



Note on nomenclature. — It is the Quercus nigraXShumardii of E. J. Palmer, 

 who supposes it to be a hybrid of these two oaks. 



Quercus arkansana Sargent. Water Oak. 



Range. — Southwestern Arkansas (vicinity of Fulton and several miles north 

 of the latter town). 76 



NAMES IN USE 



Arkansas Oak (lit.). Water Oak. 



Quercus arkansana caput-rivuli Ashe. 



Range. — Georgia (Clay County); Alabama (Pike County); Florida (vicinity 

 of Crestview). 



Note on nomenclature. — First described as a hybrid, XQuercus caput- 

 rivuli Ashe. 



X Quercus venulosa Ashe. Hybrid. 



Range. — Florida (vicinity of Turkey Creek, Okaloosa County). 

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

 sana caput-rivuli Ashe and Quercus cinerea Michaux. 



w A dwarf form of this variety now designated as Quercus nigra tridentifera, forma microcarya (Small) 

 Sargent, and formerly called Quercus microcarya Small, occurs in dry rocky soil on Little Stone Mountain, 

 Dekalb County, Georgia. 



" C. S. Sargent suggests that an oak found by Chas. Mohr in 1880 in Alabama on the Conicuh River may 

 be of this species. Dr. Mohr believed it to be a hybrid between Quercus nigra Linnaeus and Quercus 

 marilandica Muenchhausen. Prof. Trelease now believes (fide letter to the author, Sept. 17, 1921, that 

 his X Quercus sterilis is the same as the above species, in which case the latter name becomes a synonym 

 of Quercus arkansana Sargent, the range of which would become considerably extended. 



