102 POLYPODIUM CONCTNNUM. 



There is a divided opinion as to whether the present species 

 belongs to Aspidium or Pohjpodium. Some authors think that 

 they have seen an indusium, and others have failed to trace 

 the slightest approach to one. In general appearance it bears 

 a striking resemblance to some species of Aspidiums, and 

 therefore as striking a dissimilarity to the chief portion of the 

 genus Polypodium. 



For plants I am indebted to Mr. Joseph Henderson, of 

 Wentworth, and to Messrs. Booth, of Hamburg. 



It may be procured of Mr. Sim, of Foot's Cray, and Messrs. 

 Booth, of Hamburg. 



The illustration is from a plant in my own collection. 



