20 POLYPODTUM GRACILIS. 



the rachis. The fertile fronds twice the length of the barren 

 ones. 



Sori uniserial to biserial, the spore cases being surrounded 

 ■with forked hairs. 



Length of frond from twelve to eighteen inches; colour deep 

 green. Upper surface polished. 



A stove Fern. 



Native of Jamaica. 



Introduced a few years ago into the Koyal Gardens, Kew, 

 and into the Glasnevin Gardens. 



Mr. Moore remarks that it is closely allied to P. reptans, yet 

 larger and shorter. P. reptans has shorter hairs, and has a 

 prostrate habit. 



I have not yet been enabled to procure a plant; for fronds 

 I am indebted to Mr. Smith, Curator of the Royal Gardens, 

 Kew. 



It is in the Catalogue of Messrs. Sim, of Foot's Cray. 



The illustration is from a frond forwarded by Mr. Smith, of 

 Kew. 



