412 HARPER: VEGETATION OF THE COASTAL PLAIN 
prairies, marshes, etc.* The abundance of Pinus Taeda also 
indicates the trend away from the typical pine-barren conditions 
which may be assumed to have existed here several thousand years 
ago. The frequency of Pinus palustris in a region with such 
characters is rather surprising, but that does not necessarily 
indicate that it is abundant. One tree of it on each side of the 
railroad every two or three miles would have been enough to give 
the above figures, 8 and 20. 
The traveler going northward from Savannah would apparently 
here encounter Cornus florida and Alnus rugosa for the first time, 
but no species seem to have their northern limits in this belt. 
On my route of 1909 the fall-line sand-hills begin in the upper 
edge of Orangeburg County, about 30 miles south of Columbia, and 
continue to Hamlet and beyond, interrupted only by the valleys of a 
few muddy rivers which rise in the Piedmont region. The sand- 
hill region is quite hilly, and nearly all the way through Lexington 
County one can get a splendid view to the eastward, clear across 
the valley of the Congaree River, and probably all the way to the 
“high hills of Santee.’’{ Descriptions of this region can be found 
in nearly all general descriptions of South Carolina (which need 
not be specified here), but it is rarely mentioned in botanical liter- 
ature. Only about Io per cent. of the area was under cultivation 
in 1880, according to Hammond, but the proportion is of course 
considerably greater now. 
The following list of plants is based on about 90 miles of ob- 
servations in South Carolina, mostly in Lexington, Richland, and 
Kershaw counties, and 10 miles in Richmond and Scotland 
counties, North Carolina, besides what I saw in walking out a 
short distance from Hamlet. (On this walk of course I saw many 
plants that were too inconspicuous to be recognized from a train, 
but my rule of excluding species seen only once or twice in a region 
disposes of them.) The sand-hill plants belong principally to 
only two habitats, dry hills and bogs. 
n 1908 I found the same to be true on the Delaware peninsula, especially the 
southern half of it. (See Torreya 9: 222-223. 1 09. With the weeds eliminated 
a similar state of affairs would have been evident in the other regional lists in 
the same ‘Wate 
+S yton, View of S.C. 10. 1802; Hammond, ‘“‘South Carolina” rro-111. 
1883; nacht Citivas U. S. 6: 486. 1884. 
