128 HARPER 



Common names are given in many cases, and divided into 

 three classes. Those which I know to be used in the Altamaha 

 Grit region are enclosed in quotation marks, those which seem 

 not to be used there, but in other parts of Georgia, are in paren- 

 theses, and those which I am not sure about have no such marks. 

 All common names are printed in small capitals, and each is 

 placed immediately after the citation of the specific name, or 

 after the generic name if it is applied indiscriminately to all the 

 species of a genus. 



The remarks under each species includes first its habitat or 

 habitats, often with notes on its relative abundance, and then its 

 known distribution within the region, usually by counties if it is 

 not common throughout. When a species has not been observed 

 in every county it is not always safe to assume that it grows in 

 all of them, and for species which are known in only a few count- 

 ies it may be possible hereafter to discover climatic or other 

 barriers which prevent them from spreading in some directions. 

 For this reason I have gone into what may seem unnecessary 

 detail in discussing the distribution of all but the commonest 

 species. The counties enumerated in each case are arranged 

 as nearly as possible in geographical order from northeast to 

 southwest, and the names of those within the region are printed 

 in small capitals, the word county being usually omitted. 1 



The numbers in parentheses associated with the county names 

 refer to my collection numbers, 2 and the date on which any par- 

 ticular number was collected can be found (approximately at 



1 In August, 1905, the Georgia legislature created eight new counties, 

 seven of which include parts of the Altamaha Grit region. But as the 

 field work on which this flora is based was of course all done (and the 

 specimens labeled) before the change was made, and at this writing no 

 accurate map of the new counties has yet been published, it is obviously 

 impracticable to correlate my notes with the new state of affairs at 

 present. Consequently the new counties are here ignored, and the 

 distribution given in the following pages is based on the map which 

 forms the frontispiece, which shows the political boundaries, as they 

 existed during my residence and subsequent explorations in Georgia. 



2 All the vascular plants I have collected in Georgia since the middle 

 of June, 1900, have been numbered consecutively, and the numbers for 

 bryophytes and thallophytes have been interpolated by the addition of 

 the letters a, b, c, etc. Nearly complete sets of these plants, aggregating 



