120 POLYPODIUM GRANDIDENS. 



to three feet in length; colour a rich dark green. The fronds 

 are pinnate, of a lanceolate form, the pinnae being somewhat 

 membranous, and lanceolate-acuminate. They are much serrated, 

 being decurrent at the base, and articulated with the rachis. 

 The apices of the veinlets swollen and very pale in colour, 

 giving a spotted appearance to the frond. 



The sori, which are large, and of a yellowish colour, even- 

 tually becoming brown, are uniserial, about forty pairs, each 

 provided with a number of laciniated scales, which the swelling 

 sori speedily obliterates. 



Sori immersed in the frond, producing elevated protuberances 

 on the upper surface. 



Best known in England as the Goniophlehiwn argutum. 



Messrs. Booth, of Hamburg, forwarded a plant of this species, 

 and Mr. Norman, of Hull, a frond. 



It does not appear in any of the English Nurserymen's 

 catalogues; it is in that of Messrs. Booth, of Hamburg. 



The illustration is from the plant in my own collection. 

 Usually the frond has more pairs of pinnse than the one figured. 



