4 F I L I C E S. 



The spatulate sterile fronds, and the fertile ones with partially 

 immersed sori, equidistant between the costa and margin, readily dis- 

 tinguish this from P. Hookeri, of this work. 



Plate 1. — Fig. 1. Plant, of the natural size. 1 a. Section of a 

 frond, with a single sorus. 1 b. Echinate sporangium. — The details 

 more or less magnified. 



3. Polypodium conforme, Sp. Nov. (Tab. 1.) 



P. rhizomate caispitoso; stipitilms brevibus; frondibus Uneari-lanceolatis 

 obtusis basi attenuatis membranaceis glahris ad marginem paullulum 

 repandum costamque setosis; venis furcatis ; soris biserialibus approxi- 

 mates plains rotuadis costce proxwnis ; sporangiis echinatis. 



Hab. Ovolau, Feejee Islands : on rocks and trunks of trees, at an 

 altitude of 2,000 feet. 



Rootstock ccespitose, about half an inch high, imbricated with pale 

 chaffy scales, the rootlets capillaceous, branching, and slightly rufous- 

 hirsute. Stipes short and setose. Fronds 4 to 6, smooth and membra- 

 naceous, about 4 inches long, linear-lanceolate and slightly attenuated 

 towards the base, the margin very slightly repand, and, with the costa, 

 setose; the hairs of a dark brown colour. Lines of round sori usually 

 on the upper half of the frond, close to the costa, approximating, but 

 seldom confluent. Sp>orangia seated on a long pedicel, echinate. 



This differs from P. subspailiulatum by the plane sori, and their 

 proximity to the costa; and from P. Hookeri, by its membranaceous, 

 smooth fronds, and very short stipes. 



Plate 1.— Fig. 2. Plant, of the natural size. 2 a, Section of a 

 frond, with a single sorus. 2b. Echinate sporangium. — The details 

 more or less magnified. 



4. Polypodium Hookeri. 



Polypodium seligerum, Hook. & Arn. Bot. Beech. Voy. p. 103, t. 21, f. A. (uon Blume,) 



