142 F I L I C E S. 



branaceis glahris oblongo-Unceolatis acuminate pinnatis; pinnis ses- 

 silibus alternis oblongo-lanceolatis acuminatis pinnatifidis, laciniis 

 oblongis obtusis crenatis ; rhaelri costa venisque paleaceo-hirsutis ; saris 

 obliquis; indusio niembranaceo. 



Hab. Samoan and Feejee Islands : in moist forest lands. 



Stipes slender, from 10 to 12 inches long, half round, with 2 to 3 

 shallow furrows in front, and hirsute (in a recent state) with slender, 

 shrivelled, reticulated paleai. Fronds oblong-lanceolate in circumscrip- 

 tion, pinnate, with an acuminate, pinnatifid point, its consistency tend- 

 ing to membranaceous. Pinna? at the base of frond rather distant, 

 sessile and alternate, oblong-lanceolate, acuminate, deeply pinnatifid, 

 their points entire or serrate. Segments oblong, obtuse, subfalcate, 

 crenate; the sinus rounded at base. Rhachis, costa, and veins, with 

 brown, chaffy, hirsute scales. ;SbW short, oblique, and crowded. Indw- 

 sium membranaceous, brown, usually simple, only binate on the lower 

 and exterior venules. 



This species is evidently related to D. tomentosum of Blume: 

 judging from his description. 



Plate 18. Fig. 2. Frond, of the natural size, 2 a. Cross section of 



the stipe. 2 b. Scale from the stipe. 2 c. Section of a pinna, showing 

 a binate indusium. 2 d. Sporangia.— The details more or less mag- 

 nified. 



5. DiPLAznjM Shepheedi, Presl. 



Diplazium Shepherdi, Presl, Tent. Pterid. p. 114. 

 Asplenium ambiguum, Raddi, Plant. Brasil. p. 38., t. 54. 



Hab. Organ Mountains, Brazil. 



Raddi's figure of Asplenium ambigimm is -a good outline represen- 

 tation of our plant: his placing the species in Asplmium, shows 

 that he did not detect the binate sori on the lower and exterior 

 venules. 



