

ALTAMAHA GRIT REGION OF GEORGIA 101 



perennial, and the few annuals have evidently crept in from the 

 adjacent sand-hills. 



Flowers are never very abundant or conspicuous in these places, 

 but seem to be most numerous in the latter part of March. In 

 this respect the hammocks are very different from the sand-hills, 

 and more like the non-alluvial swamps. The average flowering 

 period is 39 days. White flowers predominate (as in the swamps 

 and on the sand-hills too) , there being at least 1 5 white-flowered 

 species. There are 1 1 species with anemophilous flowers, 9 green- 

 ish entomophilous, 10 cream-colored, 4 yellow, and one or two 

 each of several other colors. 



Jan. Feb. Mar. April May June July Aug. Sept. Oct. Xov. Dec. 



10 



Fig. 15. 

 Phrenological diagram for 50 plants of hammocks, including 11 trees and 21 

 shrubs. 



Fleshy fruits are more common than any one other contriv- 

 ance for dissemination. In Hamamelis we have a well-known 

 case where the seeds are forcibly ejected from their capsules. 



The ranges of the hammock plants are of considerable interest. 

 Out of 58 species whose ranges are pretty well known, 14, or 

 nearly one-fourth, grow almost anywhere in the Eastern United 

 States, probably in all or nearly all the geological divisions de- 

 scribed near the beginning of this paper. Twelve others have an 

 equal disregard for geological formations in the southeastern 

 states, but for some reason (climatic most likely) do not range 

 farther north than Virginia. Nineteen species (about one-third) 

 are confined to the coastal plain or nearly so, but not to the pine- 

 barrens. About 13 others are confined (in Georgia at least) to 

 the lower three-fourths of the coastal plain, which includes the 

 pine -barrens and littoral region. Only 5 of these last 13 are not 

 known northwest of the Altamaha Grit escarpment (and some, 

 of these belong more properly to other habitats than hammocks) . 

 These figures can be presented in another way. Over 90% of the 



