12, 



itself. The fern was never found on the oak in this 

 region at an altitude less than five meters. The elm 

 and the oak are the only trees on which the polypody 

 occurs abundantly in this region, Only one specimen 

 of Celtis mississippiensis was found bearing a small 

 clump of the polypody, This was an^usual case since 

 on no other specimen of Celtis of any diameter^was 

 the fern ever found, It is quite possible that on 



Fig,9 

 The characteristic habit of P. r)olypodiodes 

 on ^uercus stellata at station #7, 



this tree the fern was able to take a good hold 

 beacause there was much decaying vegetable matter 

 accumulated on a projecting piece of bark where 

 the epiphyte anchored it self .It may be added that 



