408 HARPER: VEGETATION OF THE CUASTAL PLAIN 
As each list of course combines several habitats, 1 have not 
attempted to distinguish evergreens, vines, etc., as I sometimes 
do in treating habitat lists, but I have placed the names of weeds 
in parentheses, so as to make a little distinction between natural 
and unnatural vegetation. It is so difficult to estimate the effects 
of civilization on the relative abundance of native plants that I 
have left that phase of the problem almost untouched in this paper. 
Probably the most marked effect is the growing scarcity of long- 
leaf pine. 
In my earlier paper already cited I referred to 68 works by 
other authors which bore more or less directly on the phyto- 
geography of the Carolina and Virginia coastal plain. Not much 
additional literature of that kind has appeared since, except a 
few more of the soil surveys of the U.S. Department of Agriculture. 
Under each region described I will mention a few of the more 
important references to it in previous publications, as I did not 
classify the literature by regions before. 
That part of my route north of Savannah which lay in Georgia 
I had traversed once before (in June, 1903), but had never written 
anything about it. As I excluded it from the Altamaha Grit 
region in both of my published maps of Georgia* (though perhaps 
without sufficient reason) a superficial description of it will not 
be out of place here. It is mostly flat pine-barrens, with frequent 
gum swamps, and not many ponds. Only a small proportion 
of the area is under cultivation, but lumbering has greatly reduced 
the amount of Pinus palustris, as has been the case nearly through- 
out the range of that useful tree. 
The plants noted are as follows: 
TREES. 
13 Pinus serotina 4 Magnolia glauca 
13 Nyssa biflora 4 Acer rubrum 
11 Pinus palustris 3 Taxodium imbricarium 
10 Pinus Elliottii 2 Liriodendron Tulipifera 
9 Liquidambar Siyraciflua 2 Quercus falcata 
5 Pinus Taeda 
SHRUBS. 
7 Serenoa serrulata 4 Cliftonia monophylla 
6 Clethra alnifolia 4 Quercus pumila 
*The frontispieces of Ann. N. Y. Acad. Sci., vol. 17, no. 1, 1906, and Southern 
Woodlands, vol. 1, no. 3, 1907. 
