54 rOLYPODTUM CUSPIDATUM. 



bright shining green; length of pinnse from six to eight inches. 



Sori circular, uniserial, at first minute and white, eventually- 

 becoming very large, and orange-yellow in colour. About thirty- 

 six pairs of sori on each pinna, and raising slight umbones on 

 the upper surface. 



Fronds lateral, being articulated on a very thick, creeping, 

 smooth, branched rhizoma, bright green in colour, scattered 

 over with large brown scales. Rhizoma about two inches and 

 a half in circumference. 



Introduced into the Royal Gardens, Kew, in the year 1844, 

 by Mr. John Cristie. 



Stipes pale green on upper side, rich brown below, the two 

 colours being divided by a narrow belt of pale green. 



The fronds stand nearly erect, whilst the pinnae are pendulous. 

 The width of the frond is the same, except near the apex, 

 where it becomes narrower. 



The plant in my collection has fronds four feet in length; 

 with pinnse thirteen inches long, and not an inch wide in the 

 broadest part. The stipes about fourteen inches in length. 



This Fern, although by no means in general cultivation, is 

 best known under the name of Drijnaria leiorhiza. 



My obligations are due to Messrs. Rollisson, of Tooting, for 

 a plant of Polypodiiim cuspidatum ; and to Messrs. Booth and 

 Sons, of Hamburg; Mr. Henderson, of "Wentworth; Mr. 

 Moore, of the Chelsea Botanic Gardens; and Mr. Norman, 

 of Hull, for fronds. 



It can be procured of Messrs. Bollisson, of Tooting, and 

 Mr. R. Sim, of Foot's Cray; and their Catalogues appear to 

 be the only ones which contain this Fern. 



The illustration is from a plant in my own collection. 



