TREES OF NORTH AMERICA 



Distribution. Borders of swamps and low wet woods of the coast region; southeastern 

 Virginia (Dismal Swamp) to northern Florida, and through the Gulf states to the valley 

 of the Neches River (Beaumont, Jefferson County), eastern Texas; in Louisiana northward 



Fig. 239 



to the valley of the Red River; most abundant in south central Alabama and in Louisiana. 



X Quercus beaumontiana Sarg., believed to be a hybrid of Quercus rhombica and Q. rubra 

 has been found growing by a street in Beaumont, Jefferson County, Texas. 



X Quercus Cocksii Sarg., probably a hybrid of Quercus rhombica and Q. velutina, has 

 been found at Pineville, Rapides Parish, Louisiana. 



17. Quercus Phellos L. Willow Oak. 



Leaves ovate-lanceolate or rarely obovate-lanceolate, often somewhat falcate, gradu- 

 ally narrowed and acute at the ends, and entire with slightly undulate margins, when they 

 fold light yellow-green and lustrous on the upper surface, coated on the lower with pale 



Fig. 240 



caducous pubescence, at maturity glabrous, light green and rather lustrous above, dull and 

 paler or rarely hoary-pubescent below, conspicuously reticulate- venulose, 2|'-5' long, 

 |'-1' wide, with a slender yellow midrib and obscure primary veins forked and united 



