Harper: Explorations in Georgia 1903 



143 



nificent pine forests, any information in regard to its flora and 

 other natural resources which can be placed on record now will 

 increase in interest as the region becomes more thickly settled* 



The rock which characterizes this part of the state is not 

 known to contain any recognizable fossils, but it is believed to t)e 

 of Upper Oligocene age. * It is nearly everywhere concealed by 



overlying Pleistocene deposits (principally Lafayette and Colum- 

 bia) , but in a few places, usually on slopes in dry pine-barrens, it 

 comes to the surface, forming cliffs or sometimes flat outcrops. 

 Such exposures were seen in 1903 in the counties of Tattnall, 

 Coffee, Dodge and Dooly, and, as might be expected from their 



F 



scarcity and previously unexplored condition, support a flora of 



Figure i. Outcrop of Altamaha Grit in open pine-barrens near Pendleton Creek, 

 Tattnall County, June 26. Litjuidambar Styraciflua in right foreground ; the other 

 trees are mostly Pintis palusfris. This is one of the localities for Selaginella arenicola 

 and Talinum tereiifoHiim^ mentioned below. 



unusual interest. Among the species growing on such rocks are 

 some which seem to be endemic to the Altamaha Grit region, and 

 a still larger number which have been considered as characteristic 



formation 



84 : 81, 82. 1892. 



