LOBLOLLY OR NORTH CAROLINA PINE. 17 



(6) Loblolly pine with cypress in deep swamps (Table 1, numbers 



12 to 14) ; 



(7) Loblolly pine in hardwood and shortleaf pine forests chiefly on 



the Piedmont uiDlands (Table 1, numbers 1, 2). 



OLD FIELD GROWTH ON DRY SITES. 



^ These sites were originally occupied by longleaf pine or by shortleaf 

 pine mixed with upland oaks and hickories. The longleaf pine sites, 

 which are confined to the coastal plain, are for the most part heavy 

 upland clays and coarse upland sands (largely Norfolk sand) ; they are 

 of the greatest extent south of Neuse River. The shortleaf pine sites 

 are largely restricted to the eastern tier of Piedmont counties, but ex- 

 tend into the coastal plain in Halifax, Northampton, and Nash coun- 

 ties. The soils for the most part are loams or heavier soils of the Cecil 

 and Durham series, the water table as a rule lying between 20 and 45 feet 

 beneath the surface. These lands have been cultivated, but after the 

 exhaustion of the scant humus they were found too poor and were aban- 

 doned; later they were stocked by wind-sowed seed of loblolly pine. 

 Some stands on sites on which longleaf pine formed the original forest 

 contain an admixture of longleaf pine; and on sites which were origi- 

 nally occupied by shortleaf pine and upland hardwoods, an admixture 

 of shortleaf pine. 



Table 2 shows the range of diameters and the composition of charac- 

 teristic stands of loblolly pine in upland old fields. 



