308 



POLYPODIACE^;. 



forms which may be easily regarded as distinct species. 

 Although I have not yet seen the specimens of the 

 named species, I suspect if P. appendiculata may not be 

 a collective name for at least two different valid species. 

 Our ferns, which might be regarded as forms of the 

 same species, are very constant and are never variable. 



Poll/podium LINN. 

 Polypodium aspidistafrons HAY ATA sp. nov. 



Fig. 123- A ; Polypodium aspidistrifrons UAYATA X 7. 



Fig. 123-B, Polypo- 

 dium aapidistnfroiis HA- 

 YATA; a, a portion of a 

 frond, natural size ; b, a 

 scale on the rhizome ; c, 

 a scale on the surface of 

 the frond, greatly mag- 

 nified. 



