122 



BOTANICAL GAZETTE 



[FEBRUARY 



m arked 



■PP 



(k 



moisture, and a higher temperature than the middle beach. The 

 illumination is much greater, especially during certain times of the 



formation 



Evapora- 



tion and radiation from the soil, however, are less intense, because the 



Fig. 



Zealand 



io. Soldanella community on dune slope at New Brighton, Canterbur 

 and. On summit, Scirpus frondosus. (Photograph by Dr. L. CockavM 



ground is well covered with plants. The amount of spray is less the 



artner we go from shore, and complete inundations occur only at 

 very long lntervals> The ^^ ^ ^ d ^ ^ „ nn . 



hZ?w grCater than ° n the lower formations, and very few - 

 halophvtes appear on this belt. The influence of wind is very marked 



in tnar sanH i« ui r . ,.•»« 



COD' 



middle 



winrl f im sma11 embryonic dunes {fig. °)- 



tavors transportation of seeds and shoots from the mi 



The 

 ddle 



