1917] 



GANO— ECOLOGY OF FLORIDA 



357 



the line of high water. Here live oaks, water oaks, sweet gums, 

 and the swamp and pond pines appear, beginning a meadow or 



immediate 



(fig. 6) . 



lax Walteri 

 laurifolia ] 



on moist soil. 



Fig. 6. — Lake margin, showing cypresses in water, shrub zone within range of 

 high water, and live oaks on rising ground. 



Ponds which dry out during the season are often encircled by 



marginal 



it into a 



may fill 



" On areas of clayey soils, willows, 

 maples, sweet gums, and button bushes are the commoner marginal 

 trees and shrubs; while the chief variations in ponds on sandy soils 

 are due to the presence of cypresses or of gums as the tree pioneers, 



