206 BOTANICAL GAZETTE [SEPTEMBER 
of Georgia, and other forms are not wanting. In the Paris basina 
species of Pandanus is associated with the Nipadites, while at 
Bournemouth Gleichenia and various tropical Polypodiaceae occur. 
The Lutetien’ stage of the Eocene in Europe and the Claiborne 
stage in America are both characterized by a remarkable trans- 
gression of the sea, the approximate shore line of the Claiborne sea 
being shown on the accompanying map (fig. 2). This map makes 
no pretence to exactness, which would be impossible on so small 
: Fic. 1.—Sketch map showing geographical distribution of the existing gen. 
Nipa Thunberg and the eocene genus Nipadites Bowerbank; horizontally lined ate 
shows single existing species; vertically lined area shows eocene species. 
a scale map, even if the areal extent of the Claiborne deposits were 
accurately known. What it is intended to illustrate is the relation 
of land to sea and the line of advance of the flora which was neces 
sarily along the shore from equatorial America, where undoubtedly © 
the representatives of this flora flourished during the whole of the 
ertiary. 
In studying the Georgia flora, the writer became much interested 
in the means of dissemination of its modern allies, which in ° 
far as they are known are worthy of enumeration. It has ee 
shown that certain species of Eugenia, Terminalia, Rhiz0P — 
